Inspection and Basic Maintenance of Brake Systems

Size: px
Start display at page:

Download "Inspection and Basic Maintenance of Brake Systems"

Transcription

1 Inspection and Basic Maintenance of Brake Systems 11-1

2 Types Air brakes Hydraulic brakes Secondary braking systems 11-2

3 Air Brake System Most large, modern fire apparatus are equipped with air-operated braking systems Three braking systems combined Service Parking Emergency 11-3

4 Air compressor Air Brake System Pumps air into the air storage tanks (reservoirs) Governor Controls when the air compressor will pump air into the air storage tanks 11-4

5 Air Brake System Air storage tanks Hold compressed air Allow brakes to be used even if compressor stops working Checked daily for condensation Number and size varies 11-5

6 11-6

7 Air dryer Air Brake System Collects and removes contaminants Provides clean, dry air In line between the air compressor and first air storage tank 11-7

8 11-8

9 Air Brake System Alcohol evaporator Reduces the risk of ice in air brake components during cold weather Treadle valve or master control valve Located at the brake pedal Controls entire brake system Overrides other components 11-9

10 Air Brake System Safety relief valve Installed in the first tank the air compressor pumps air into Protects the tank and the rest of the system from too much air pressure

11 Brake pedal Air Brake System Brakes are applied by pushing down on the brake pedal Also called the foot valve or treadle valve 11-11

12

13 Brake chamber Air Brake System Converts the energy of compressed air into mechanical force and motion Slack adjuster The link between the brake chamber and the foundation brake camshaft

14 Air Brake System Drums and shoes Discs and pads Types S-cam Wedge Disc

15 S-Cam Wedge

16 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

17

18 Air Brake System One-way check valve Allows air to flow in one direction only All vehicles with air brakes must have a check valve located between the air compressor and the first reservoir

19 Air Brake System Air supply pressure gauge All air-braked vehicles have an air supply pressure gauge connected to the air tank Dual air brake system

20 Air Brake System Application pressure gauge Indicates how much air pressure you are applying to the brakes Low air pressure warning Required with air brakes 11-20

21 Air Brake System Air pressure protection valve Prevents air horns/air adjuncts from operating when the pressure in the air reservoir drops below 80 psi Stop light switch Turns on the brake lights when you apply the air brakes Does with an electric switch that works by air pressure 11-21

22 Air Brake System Front brake limiting valve Some apparatus made before 1975 Normal position Slippery position 11-22

23 Spring brakes Air Brake System Meets emergency and parking brake requirements When driving, powerful springs are held back by air pressure Parking brake must be held on by mechanical force 11-23

24 Air Brake System Dual air brake systems Used for safety Operated by a single set of brake controls The first system is the primary system Other system is the secondary system 11-24

25 Air Brake System Antilocking brake systems (ABS) On most newer apparatus Reduces possibility of being thrown into a skid when the brakes are fully applied Components Speed sensors Valves In the brake line of each brake controlled by the ABS On some systems, the valve has three positions 11-25

26 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

27 Pump Air Brake System Restores pressure to the brakes once released by the valves Controller A computer in the car that watches the speed sensors and controls the valves 11-27

28 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

29 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

30 Hydraulic Brake System Master cylinder Acts as the holding tank for brake fluid When the brake pedal is depressed, the master cylinder forces fluid to each of the wheels 11-30

31 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

32 Hydraulic Brake System Combination valves Ensures that the front and rear brake systems are working together Consists of a Metering valve Proportioning valve Brake warning light 11-32

33 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

34 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

35 Hydraulic Brake System Brake pedal Brake lines Wheel cylinders Contains fluid-activated pistons that push the brake shoes/pads against the drums/discs 11-35

36 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

37 Hydraulic Brake System Emergency brakes Manually operated Not dependant on the hydraulic system 11-37

38 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

39 Hydraulic Brake System The operational principles of drum brakes/shoes, and the disc brakes/pads are the same as with air brakes 11-39

40 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

41 Copyright Howstuffworks, Inc. Permission to duplicate granted by Howstuffworks for classroom use only

42 Secondary Brake Systems Saves wear on the primary brakes Referred to as retarders Retarders employ many existing apparatus components Optimized control through the use of rotating engine and drive train forces 11-42

43 Secondary Brake Systems Engine retarders Compression brake Uses engine to brake Turns engine into energy absorbing air compressor Exhaust brake Uses exhaust from engine to brake Works opposite compression brake 11-43

44 Secondary Brake Systems Automatic transmission retarder Works with gear selection Empty chamber mounted to rear of transmission Transmission pump forces fluid into chamber Chamber automatically empties When not in use Driveline Magnetic field developed with battery voltage 11-44

45 Inspection & Basic Maintenance Air Brakes Air brake tests - DMV Air compressor and governor Air pressure should build to allow apparatus operations within 60 seconds of starting Need to be operationally tested daily 11-45

46 Inspection & Basic Maintenance Air Brakes Air storage and drain tanks Proper mounting Loose Clean Drain daily 11-46

47 Inspection & Basic Maintenance Air Brakes Air dryer and alcohol evaporator Securely mounted Connections intact Safety valve If the safety valve releases air, something is wrong 11-47

48 Inspection & Basic Air Brakes Slack adjusters Look for Maintenance Broken, loose, and missing parts Proper angle between push rod and adjuster arm A little over 90 when brakes released and, Not less than 90 when applied 11-48

49 Air Brakes Brake pedal Inspection & Basic Maintenance Firm when applied Not continue to travel to the floor when pressure is applied Securely mounted Operating properly 11-49

50 Inspection & Basic Maintenance Air Brakes Brake drums & shoes/discs & pads Excessive or uneven wear Missing components Cracks Out of shape Operational failure Falls below required standards 11-50

51 Inspection & Basic Maintenance Air Brakes One-way check valve Check for leaks Securely mounted Air supply pressure gauge Must be above 90 psi to operate safely Application pressure gauge Proper operation 11-51

52 Inspection & Basic Maintenance Air Brakes Low air pressure warning Activates below 60 psi OR One half the compressor governor cut-out pressure Stop light switch Operates the brake warning lights 11-52

53 Inspection & Basic Maintenance Air Brakes Front brake limiting valve Leaks Mounting Spring brakes Missing components Leaks 11-53

54 Inspection & Basic Maintenance Air Brakes Dual air brake systems All inspections same as single systems 11-54

55 Inspection & Basic Maintenance Air Brakes Maintenance should be completed by a qualified technician Due to the complexity of the system and safety issues 11-55

56 Inspection & Basic Maintenance Hydraulic Brakes Hydraulic brake test Pump brake pedal three times and hold for five seconds Pedal should not move If it does, there is a leak 11-56

57 Inspection & Basic Hydraulic Brakes Master cylinder Maintenance Check fluid level Fill with proper manufacturer's recommended fluid Cover should not be leaking fluid Inspect for leaks Wear may cause cylinder to leak May result in brake failure 11-57

58 Inspection & Basic Hydraulic Brakes Brake pedal Maintenance Firm when applied Not continue to travel to the floor when pressure is applied Securely mounted Operating properly 11-58

59 Inspection & Basic Maintenance Hydraulic Brakes Brake drums & shoes/discs & pads Excessive or uneven wear Missing components Cracks Out of shape Operational failure Falls below required standards 11-59

60 Inspection & Basic Hydraulic Brakes Brake lines Physical damage Leaking fluid Wheel cylinders Maintenance Leaking fluid Sticking wheel cylinder can cause brake to drag 11-60

61 Inspection & Basic Hydraulic Brakes Brake linings Maintenance Same as air brake systems 11-61

62 Inspection & Basic Maintenance Hydraulic Brakes Maintenance should be completed by a qualified technician Due to the complexity of the system and safety issues 11-62

63 Inspection & Basic Maintenance Secondary Brakes Inspections should include Proper mounting Loose or missing components Physical damage Leaks (if applicable) Most failures are discovered during operational tests 11-63

64 Inspection & Basic Maintenance Secondary Brakes Maintenance should be completed by a qualified technician Due to the complexity of the system and safety issues 11-64

65 NFPA Out-of of-service Criteria Air Brakes Service brakes that have a drop of more than 2 psi in one minute Leak-down rate (time) is more than 3 psi in one minute Brakes out of adjustment Defective system components 11-65

66 NFPA Out-of of-service Criteria Air Brakes Ineffective braking operation Ineffective parking brake Air compressor that fails to build air pressure Air compressor that fails to maintain psi pressure in the system 11-66

67 NFPA Out-of of-service Criteria Air Brakes Friction surfaces, brake shoes, or disc brakes with grease or oil Lining, pads, rotors, or drums worn beyond manufacturer's minimum specifications Activated ABS warning indicator 11-67

68 NFPA Out-of of-service Criteria Hydraulic Brakes Components with a Class 2 leakage or are defective Friction surfaces, brake shoes, or disc brake pads with grease or oil Ineffective braking or parking brake operation 11-68

69 NFPA Out-of of-service Criteria Hydraulic Brakes Warning light activated or pedal that falls away/drifts when brake pressure applied Lining, pads, rotors, or drums worn beyond manufacturer's minimum specifications Activated ABS warning indicator 11-69

70 NFPA Out-of of-service Criteria Secondary Braking Systems None stated 11-70

71 CCDH Out-of of-service Criteria Air brakes Only indicates driving test failure, not out-of of- service criteria Hydraulic brakes If fails DMV hydraulic brake test Secondary braking systems None stated 11-71

learn more about fire apparatus brake systems It was not developed to make firefighters into functions of components and parts of a brake

learn more about fire apparatus brake systems It was not developed to make firefighters into functions of components and parts of a brake Fire Apparatus Braking Systems This video was developed to help firefighters learn more about fire apparatus brake systems and wheels. It was not developed to make firefighters into Technicians, but to

More information

AIR BRAKES THIS SECTION IS FOR DRIVERS WHO DRIVE VEHICLES WITH AIR BRAKES

AIR BRAKES THIS SECTION IS FOR DRIVERS WHO DRIVE VEHICLES WITH AIR BRAKES Section 5 AIR BRAKES THIS SECTION IS FOR DRIVERS WHO DRIVE VEHICLES WITH AIR BRAKES AIR BRAKES/Section 5 SECTION 5: AIR BRAKES THIS SECTION COVERS Air Brake System Parts Dual Air Brake Systems Inspecting

More information

Air Brake Lesson. Dual Air Brakes. Primary. Secondary. Dual Parking Control Valve

Air Brake Lesson. Dual Air Brakes. Primary. Secondary. Dual Parking Control Valve Air Brake Lesson Main Parts A. Air Compressor- Pumps air into the storage tanks(5-1) B. Air Governor- Tell the compressor when air is pumped into the tanks(5-1) C. Air Storage Tanks- Stores compressed

More information

Section 5 AIR BRAKES. This Section Covers. Air Brake System Parts Dual Air Brake Systems Inspecting Air Brakes Using Air Brakes

Section 5 AIR BRAKES. This Section Covers. Air Brake System Parts Dual Air Brake Systems Inspecting Air Brakes Using Air Brakes Section 5 AIR BRAKES This Section Covers Air Brake System Parts Dual Air Brake Systems Inspecting Air Brakes Using Air Brakes This section tells you about air brakes. If you want to drive a truck or bus

More information

The parts of these systems are discussed in greater detail below.

The parts of these systems are discussed in greater detail below. Section 5 Air Brakes This Section Covers Air Brake System Parts Dual Air Brake Systems Inspecting Air Brakes Using Air Brakes This section tells you about air brakes. If you want to drive a truck or bus

More information

Air Brake Inspection Presented By: G.L. May

Air Brake Inspection Presented By: G.L. May Air Brake Inspection 2012 Presented By: G.L. May Outline of this course Objective of this course: The technician will have a better understanding of requirements for air drum brakes and air disc brakes

More information

Chapter 33 Fundamentals of Hydraulic and Air-Over-Hydraulic Braking Systems

Chapter 33 Fundamentals of Hydraulic and Air-Over-Hydraulic Braking Systems Chapter 33 Fundamentals of Hydraulic and Air-Over-Hydraulic Braking Systems Introduction Vehicle s braking system must meet the following requirements: To adequately and safely reduce a vehicle s speed,

More information

MASTER CYLINDER. Section 2. Lesson Objectives

MASTER CYLINDER. Section 2. Lesson Objectives MASTER CYLINDER Lesson Objectives 1. Explain the difference between conventional and diagonal split piping system and their application. 2. Describe the function of the compensating port of the master

More information

"#! a. S-S-cam brakes.cam brakes. b. Drum brakes. c. Foot brakes. d. Emergency brakes. a. After every working day.

#! a. S-S-cam brakes.cam brakes. b. Drum brakes. c. Foot brakes. d. Emergency brakes. a. After every working day. a. S-S-cam brakes.cam brakes. b. Drum brakes. c. Foot brakes. d. Emergency brakes.! a. After every working day. b. After every four hours of service. c. Once a week. d. Every other week. "#! a. To keep

More information

Your Brakes. Fundamentals of Braking

Your Brakes. Fundamentals of Braking B U S S E R V I C E, I N C. Your Brakes Fundamentals of Braking There are a variety of mechanical forces and physical components that make up the braking system of your coach. The forces that effect your

More information

Module 6: Air Foundation Brakes

Module 6: Air Foundation Brakes Air Brakes Terms and Definitions Basic Components That Make Up Air Foundation Brakes Types of Air Foundation Brakes Parts of a Cam Foundation Brake Parts of a Wedge Foundation Brake Parts of a Disc Foundation

More information

Part II NORTH AMERICAN STANDARD VEHICLE OUT-OF-SERVICE CRITERIA POLICY STATEMENT

Part II NORTH AMERICAN STANDARD VEHICLE OUT-OF-SERVICE CRITERIA POLICY STATEMENT Part II NORTH AMERICAN STANDARD VEHICLE OUT-OF-SERVICE CRITERIA POLICY STATEMENT The purpose of this part is to identify Critical Vehicle Inspection Items and provide criteria for declaring vehicles out-of-service

More information

SECTION 4A BRAKE SYSTEM TABLE OF CONTENTS

SECTION 4A BRAKE SYSTEM TABLE OF CONTENTS SECTION 4A BRAKE SYSTEM TABLE OF CONTENTS Description and Operation... 4A-2 Braking System Testing... 4A-2 Hydraulic Brake System... 4A-2 Brake Pedal... 4A-2 Master Cylinder... 4A-2 Brake Booster... 4A-3

More information

NATEF Task List - Medium/Heavy Duty Truck Brakes

NATEF Task List - Medium/Heavy Duty Truck Brakes The first task in is to listen to and verify the operator s concern, review past maintenance and repair documents, and determine necessary III. BRAKES A. Air 1 2 3 4 5 6 7 8 9 10 11 12 1. Air Supply and

More information

ESCONDIDO FIRE DEPT TRAINING MANUAL Section DRIVER OPERATOR Page 1 of 13 Pre-Trip Inspection Revised

ESCONDIDO FIRE DEPT TRAINING MANUAL Section DRIVER OPERATOR Page 1 of 13 Pre-Trip Inspection Revised DRIVER OPERATOR Page 1 of 13 PRE-TRIP INSPECTION The purpose of a vehicle inspection is to identify systems or parts of a vehicle that are not working properly, have failed or are missing parts so that

More information

Brake System Diagnosis and Service

Brake System Diagnosis and Service AUMT 1310 - Brake System Diagnosis and Brake System Inspection Brake System Diagnosis and Donald Jones Brookhaven College Road test Hydraulic system Leaks Fluid condition Disc brakes Rotors and pads Drum

More information

FMCSA Brake Regulations 101

FMCSA Brake Regulations 101 FMCSA Brake Regulations 101 Build your foundation on the knowledge of the brake regulations 393.40 393.55 396.19 & 396.25 Appendix G 2/27/17 Required FMCSA Brake Regulations to Teach, Train, and Test 1

More information

Air Brake Manual. Training & Reference Guide. For vehicles with air brake systems.

Air Brake Manual. Training & Reference Guide. For vehicles with air brake systems. Air Brake Manual Training & Reference Guide 2007 For vehicles with air brake systems A supplement to the Basic Licence Driver s Handbook www.dot.gov.nt.ca Table of Contents CHAPTER Brakes and Braking Heat-energy-traction-friction....

More information

SECTION 4A HYDRAULIC BRAKES

SECTION 4A HYDRAULIC BRAKES SECTION 4A HYDRAULIC BRAKES Caution: Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical

More information

BRAKE SYSTEM Return To Main Table of Contents

BRAKE SYSTEM Return To Main Table of Contents BRAKE SYSTEM Return To Main Table of Contents GENERAL... 2 BRAKE PEDAL... 10 MASTER CYLINDER... 13 BRAKE BOOSTER... 16 BRAKE LINE... 18 PROPORTIONING VALVE... 19 FRONT DISC BRAKE... 20 REAR DRUM BRAKE...

More information

NHVIM Section 2 BASIC BRAKES MAINTENANCE

NHVIM Section 2 BASIC BRAKES MAINTENANCE NHVIM Section 2 BASIC BRAKES MAINTENANCE Chair Lance Fisher, JLP Panel Members - Andrew Archibald, TMR Queensland - Renzo Barone, Meritor - Kevin Gibson, Knorr-Bremse Chair Lance Fisher, JLP Panel Members

More information

DESCRIPTION & OPERATION

DESCRIPTION & OPERATION DESCRIPTION & OPERATION BRAKE BOOSTER Delco-Moraine Single Diaphragm A combined vacuum-hydraulic unit which uses a combination of intake manifold vacuum and atmospheric pressure to provide power assist.

More information

Auto Tech 2 SEMESTER Exam Study Sheet

Auto Tech 2 SEMESTER Exam Study Sheet Auto Tech 2 SEMESTER Exam Study Sheet 1. Safety 2. Are all brakes are self adjusting? 3. The front brakes do What % of the stopping. 4. The part of the disc brakes that turns or rotates with the wheel

More information

PREVOST AIR SYSTEMS WHAT THEY DO AND HOW THEY DO IT

PREVOST AIR SYSTEMS WHAT THEY DO AND HOW THEY DO IT PREVOST AIR SYSTEMS WHAT THEY DO AND HOW THEY DO IT Air. In our buses we use air for many purposes. We warm ourselves and cool ourselves with it. We supply it to our engines so they will run. Air is what

More information

Automatic drain valves

Automatic drain valves driving commercial vehicles If you notice more than a few drops of water when you drain the supply reservoir, the air dryer or compressor may need servicing. fast fact Even if the air brake system includes

More information

Air Brake Manual. safety

Air Brake Manual. safety Air Brake Manual safety Table of contents 1. Requirements for A Endorsement...3 2. Brakes and braking...4 Heat energy traction friction... 4 Speed weight distance...5 How power is obtained...6 Stopping

More information

To study about various types of braking system.

To study about various types of braking system. To study about various types of braking system INTRODUCTION The system is purely mechanical means & is independent of the hydraulic system which controls the brake normally. A brake commonly referred to

More information

Dura Force Disc Brake System Service Manual

Dura Force Disc Brake System Service Manual TS 20809_a 3501 Shotwell Drive ISO/TS 16949:2002 Registered (PH): 937.743.8125 Franklin, OH 45005 www.waltheremc.com (FX): 937.743.8232 Table of Contents General Description 1 3 Fastener Torque Chart 4

More information

ASE Practice Test A5 Brakes

ASE Practice Test A5 Brakes ASE Practice Test A5 Brakes Hydraulic System Diagnosis and Repair 1) A spongy brake pedal may be caused by: a. ABS Diagnostic Trouble Code set b. Frozen caliper piston c. Defective metering valve d. Air

More information

Modern Auto Tech Study Guide Chapters 71 & 73 Pages Brake Systems 49 Points. Automotive Service

Modern Auto Tech Study Guide Chapters 71 & 73 Pages Brake Systems 49 Points. Automotive Service Modern Auto Tech Study Guide Chapters 71 & 73 Pages 1369 1444 Brake Systems 49 Points 1. Automotive systems use to stop, slow or to hold the wheels from turning. Brake, Friction Brake, Fraction Brake,

More information

SAULT COLLEGE OF APPLIED ARTS AND TECHNOLOGY SAULT STE. MARIE, ONTARIO COURSE OUTLINE CODE NO. : MPT 230 SEMESTER: 4

SAULT COLLEGE OF APPLIED ARTS AND TECHNOLOGY SAULT STE. MARIE, ONTARIO COURSE OUTLINE CODE NO. : MPT 230 SEMESTER: 4 SAULT COLLEGE OF APPLIED ARTS AND TECHNOLOGY SAULT STE. MARIE, ONTARIO COURSE OUTLINE COURSE TITLE: Air Brakes CODE NO. : MPT 230 SEMESTER: 4 PROGRAM: AUTHOR: Motive Power Technician Advanced Repair George

More information

Parking brake Mechanical brake acting on rear wheels

Parking brake Mechanical brake acting on rear wheels 11 Brake System 11.1 General SPECIFICATIONS EJTC0010 Master cylinder Type Tandem type I.D. mm(in.) 20.64 mm (0.813 in.) Fluid level warning sensor Provided Brake booster Type Vacuum Boosting ratio 4.0

More information

PNEUMATICS CONTENTS HST-TAMPER

PNEUMATICS CONTENTS HST-TAMPER CONTENTS Tamper Pneumatic Component Locations...2 Manually Releasing Air Brakes... 3 Releasing Air Pressure... 4 Removing Water from Air Tanks... 4 Adjusting Air Compressor Governor... 4 Check/Replace

More information

Unit HV04K Knowledge of Heavy Vehicle Chassis Units and Components

Unit HV04K Knowledge of Heavy Vehicle Chassis Units and Components Assessment Requirements Unit HV04K Knowledge of Heavy Vehicle Chassis Units and Components Content: Chassis layouts i. types of chassis ii. axle configurations iii. rear steered axles iv. self-steered

More information

SD Bendix E-12 & E-15 Dual Brake Valve DESCRIPTION

SD Bendix E-12 & E-15 Dual Brake Valve DESCRIPTION SD-03-6 Bendix E- & E-15 Dual Brake Valve TREADLE UPPER BODY ASSEMBLY PRIMARY DELIVERY ( ) 1 SECONDARY DELIVERY ( ) LOWER BODY ASSEMBLY MOUNTING PLATE PRIMARY SUPPLY ( SUP-1) PRIMARY SUPPLY ( SUP-) PRIMARY

More information

A proportioning valve is used to regulate brake pressure between front and rear brakes. Rear brakes on all models are self-adjusting.

A proportioning valve is used to regulate brake pressure between front and rear brakes. Rear brakes on all models are self-adjusting. Page 1 of 21 ARTICLE BEGINNING DESCRIPTION & OPERATION WARNING: For warnings and procedures regarding vehicles equipped with Anti- Lock Brake Systems (ABS), see ANTI-LOCK BRAKE SYSTEM article in the BRAKES

More information

SD Bendix E-10PR Retarder Control Brake Valve DESCRIPTION. OPERATION - Refer to Figure 2

SD Bendix E-10PR Retarder Control Brake Valve DESCRIPTION. OPERATION - Refer to Figure 2 SD-03-832 Bendix E-10PR Retarder Control Brake Valve MOUNTING PLATE SUPPLY 4 PORTS ELECTRICAL AUXILIARY DESCRIPTION TREADLE RETARDER CONTROL SECTION EXHAUST DELIVERY 4 PORTS FIGURE 1 - E-10PR RETARDER

More information

LA County Fire Department Pre -Trip Inspection Class B Vehicles

LA County Fire Department Pre -Trip Inspection Class B Vehicles LA County Fire Department Pre -Trip Inspection Class B Vehicles Pre Trip Inspection This slide program was designed to assist firefighter s s with their pre trip inspection This slide program comes with

More information

Brake Systems. Introduction

Brake Systems. Introduction Brake Systems Figure 1. A Typical Brake System Introduction The brake system (Figure 1) is designed to slow and halt the motion of a vehicle. To do that, various components within a hydraulic brake system

More information

Introduction and Overview to Friction Brakes. Course 105 PREVIEW ONLY PARTICIPANT GUIDE

Introduction and Overview to Friction Brakes. Course 105 PREVIEW ONLY PARTICIPANT GUIDE Introduction and Overview to Friction Brakes Course 105 PARTICIPANT GUIDE Table of Contents How to Use the Participant Guide... ii MODULE 1...1 General Principles and Terminology...1 1-1 Safety Review...2

More information

Department of Motor Vehicles Loudoun County Public Schools School Bus Inspection Study Guide Hand Out

Department of Motor Vehicles Loudoun County Public Schools School Bus Inspection Study Guide Hand Out Department of Motor Vehicles Loudoun County Public Schools School Bus Inspection Study Guide Hand Out During the actual tests, you will be expected to point or touch each of the parts of your vehicle.

More information

DIAGNOSIS AND TESTING

DIAGNOSIS AND TESTING 2007 Ford F650 : Brakes > Air Brake System General Information > DIAGNOSIS AND TESTING DIAGNOSIS AND TESTING Listen SECTION 206 00B: Brake System General Information Air 2007 F Super Duty 650 750 Workshop

More information

Copyright 1998 Inter-Industry Conference On Auto Collision Repair v.4.0

Copyright 1998 Inter-Industry Conference On Auto Collision Repair v.4.0 Uniform Procedures For Collision Repair BR11 Brakes 1. Description This procedure describes repair, replacement, and inspection requirements for collisiondamaged brake systems. 2. Purpose The purpose of

More information

SD Bendix TC-4 Modulating Control Valve TYPICAL PIPING DIAGRAM EXHAUST PORT DELIVERY PORT DELIVERY PORT FIGURE 1 SUPPLY PORT FIGURE 2

SD Bendix TC-4 Modulating Control Valve TYPICAL PIPING DIAGRAM EXHAUST PORT DELIVERY PORT DELIVERY PORT FIGURE 1 SUPPLY PORT FIGURE 2 SD-03-4503 Bendix TC-4 Modulating Control Valve EXHAUST DELIVERY DELIVERY FIGURE 1 SUPPLY TC-2 TP-2 TRAILER SERVICE BRAKE CHAMBERS GAUGE TW-1 MANIFOLD TC-2 SV-1 DS-1 COUPLINGS TRAILER EMERGENCY SPRING

More information

PUBLIC SAFETY. Ce document existe aussi en français.

PUBLIC SAFETY. Ce document existe aussi en français. Air Brake Manual PUBLIC SAFETY Ce document existe aussi en français. Table of Contents Foreward Foldout i Air Brake Endorsement Foldout ii Requirements for Air Brake Endorsement Foldout ii Dual Air Brake

More information

Brake System Fundamentals Chapter 71 Name Date Period

Brake System Fundamentals Chapter 71 Name Date Period Brake System Fundamentals Chapter 71 Name Date Period Basic Brake System Matching 1. Metal tubing and rubber hose that transmit pressure to the wheel brake assemblies. 2. Mechanical system for applying

More information

THIS IS FOR STUDY PURPOSES ONLY!!! WE ARE NOT TEACHERS OR INSTRUCTORS!!! CLASS "A" PRE-TRIP STUDY GUIDE

THIS IS FOR STUDY PURPOSES ONLY!!! WE ARE NOT TEACHERS OR INSTRUCTORS!!! CLASS A PRE-TRIP STUDY GUIDE CLASS "A" PRE-TRIP STUDY GUIDE WHAT ARE THE AIR BRAKE SYSTEM PARTS? 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. WHAT IS THE FOUNDATION OF THE AIR BRAKES? 1. 2. 3. 4. 5. 6. 7. 8. 9. HOW DOES THE AIR

More information

Hands On Test Scoring Instructions

Hands On Test Scoring Instructions Hands On Test Scoring Instructions Each scoring box contains 3 to 6 line items and up to 7 numbers plus a 0. Each section has a separate criteria for scoring. Based on the criteria, you will score the

More information

S-ABA Service Manual. Self-Setting Automatic Brake Adjusters

S-ABA Service Manual. Self-Setting Automatic Brake Adjusters S-ABA Service Manual Self-Setting Automatic Brake Adjusters Warning: Haldex strongly recommends routine visual checks be performed at EACH maintenance service interval. Foundation brake operational checks

More information

E17M ROLLING STOCK BRAKES

E17M ROLLING STOCK BRAKES E17M ROLLING STOCK BRAKES PURPOSE AND SCOPE The purpose of this Procedure is to advise Laing O Rourke personnel of the braking standards to be applied and to ensure those people involved in maintaining

More information

Proactive Methods and Tools for CMV Readiness. Tuesday, April 15 12:30 1:30 p.m. Larry E. Nelson Minnesota Department of Transportation

Proactive Methods and Tools for CMV Readiness. Tuesday, April 15 12:30 1:30 p.m. Larry E. Nelson Minnesota Department of Transportation Proactive Methods and Tools for CMV Readiness Tuesday, April 15 12:30 1:30 p.m. Larry E. Nelson Minnesota Department of Transportation Unit # 209144 (sample) Class: 33 Plow #: 209145 Wing #: 209146 Sander

More information

Air Brake Manual. Working with drivers to make our roads safer.

Air Brake Manual. Working with drivers to make our roads safer. Air Brake Manual Working with drivers to make our roads safer. Foreword The Air Brake Manual has been prepared by Manitoba Public Insurance, to assist drivers in understanding the basic operation and function

More information

TRUCKINGTRUTH.COM T T. Daniel B s Pre-Trip Inspection Checklist

TRUCKINGTRUTH.COM T T. Daniel B s Pre-Trip Inspection Checklist TRUCKINGTRUTH.COM T T Daniel B s Pre-Trip Inspection Checklist 1 My pre-trip begins as I approach the vehicle. I am looking for leaks, leaning one way or the other (which may indicate a low tire or bad

More information

GROUP 35A 35A-1 CONTENTS GENERAL DESCRIPTION... 35A-3 BASIC BRAKE SYSTEM DIAGNOSIS 35A-6 HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS...

GROUP 35A 35A-1 CONTENTS GENERAL DESCRIPTION... 35A-3 BASIC BRAKE SYSTEM DIAGNOSIS 35A-6 HYDRAULIC BRAKE BOOSTER (HBB) DIAGNOSIS... 35A-1 GROUP 35A CONTENTS GENERAL DESCRIPTION......... 35A-3 DIAGNOSIS 35A-6 INTRODUCTION..................... 35A-6 DIAGNOSTIC TROUBLESHOOTING STRATEGY......................... 35A-6 SYMPTOM CHART...................

More information

Self Adjusting Disc Brakes

Self Adjusting Disc Brakes Disc Brakes Four advantages of Disc Brakes to Drum Brakes 1) Resistance to heat fade 2) Resistance to water fade 3) Less of a tendency to pull 4) Automatically adjust to lining wear Self Adjusting Disc

More information

GUNITE Service Bulletin

GUNITE Service Bulletin Pinpointing Braking Failures Is It the Slack Adjuster? Or Is It the Foundation Brake? A slack adjuster - regardless if it s manual or automatic - is a lever used to actuate brakes. As its name implies,

More information

C. Brake pads Replaceable friction surfaces that are forced against the rotor by the caliper piston.

C. Brake pads Replaceable friction surfaces that are forced against the rotor by the caliper piston. BRAKES UNIT 1: INTRODUCTION TO BRAKE SYSTEMS LESSON 1: FUNDAMENTAL PRINCIPLES OF BRAKE SYSTEMS I. Terms and definitions A. Brake fading Loss of brakes, usually due to heat. B. Brake lining Material mounted

More information

Driver Instructions. Hydraulic Launch Assist (HLA ) TRDR1200

Driver Instructions. Hydraulic Launch Assist (HLA ) TRDR1200 Driver Instructions Hydraulic Launch Assist (HLA ) TRDR1200 September 2011 Table of Contents Warnings and Cautions Definitions... 1 Driver Display Module... 7 Operation... 9 Service and Maintenance...

More information

Air Brake Manual. Air Brake Endorsement. Ce document est disponible en français.

Air Brake Manual. Air Brake Endorsement.  Ce document est disponible en français. Foreward The Air Brake Manual has been prepared by the Department of Public Safety (Motor Vehicle Branch) to assist drivers in understanding the basic operation and function of an air brake system. The

More information

PRE-TRIP INSPECTION CDL SKILLS TEST

PRE-TRIP INSPECTION CDL SKILLS TEST CDL SKILLS TEST PRE-TRIP INSPECTION Engine Compartment +1 Axle Side and Back of Truck +1 Axle Connections and Trailer +1 Axle External Light Check In-Cab with Brake Check 1810 N WATKINS RD, WATKINS, CO

More information

SD Bendix E-7 Dual Brake Valve DESCRIPTION OPERATION APPLYING: NORMAL OPERATION - PRIMARY CIRCUIT PORTION

SD Bendix E-7 Dual Brake Valve DESCRIPTION OPERATION APPLYING: NORMAL OPERATION - PRIMARY CIRCUIT PORTION SD-03-818 Bendix E-7 Dual Brake Valve DESCRIPTION The Bendix E-7 dual brake valve is a suspended, pedal-operated type brake valve with two separate supply and delivery circuits for service and emergency

More information

Hydraulic Brake System, Bosch 42.15

Hydraulic Brake System, Bosch 42.15 Hydraulic Brake System, Bosch 42.15 Index Hydraulic Brake Index Subject Figure Brake warning lamp and buzzer related to parking brake Fig. 1 Brake warning lamp and buzzer related to service brake Fig.

More information

BASIC BRAKE SYSTEM GROUP 35A 35A-1 CONTENTS GENERAL DESCRIPTION... 35A-3 BASIC BRAKE SYSTEM DIAGNOSIS 35A-6

BASIC BRAKE SYSTEM GROUP 35A 35A-1 CONTENTS GENERAL DESCRIPTION... 35A-3 BASIC BRAKE SYSTEM DIAGNOSIS 35A-6 35A-1 GROUP 35A BASIC BRAKE SYSTEM CONTENTS GENERAL DESCRIPTION......... 35A-3 DIAGNOSIS 35A-6 INTRODUCTION..................... 35A-6 DIAGNOSTIC TROUBLESHOOTING STRATEGY......................... 35A-6

More information

SD Bendix Manual Slack Adjusters DESCRIPTION ADJUSTING MECHANISM OPERATION

SD Bendix Manual Slack Adjusters DESCRIPTION ADJUSTING MECHANISM OPERATION SD-05-1200 Bendix Manual Slack Adjusters WORM SHAFT (LOCK SCREW) FIGURE 1 - POSITIVE LOCK TYPE SLACK ADJUSTER DESCRIPTION In an s-cam type foundation brake, the final link between the pneumatic system

More information

Bulletin No.: PRO Effective Date: 10/30/69 Cancels: N/A Page: 1 of 9

Bulletin No.: PRO Effective Date: 10/30/69 Cancels: N/A Page: 1 of 9 Technical Bulletin Bulletin No.: PRO-03-02 Effective Date: 10/30/69 Cancels: N/A Page: 1 of 9 Subject: 1970 FORD L SERIES MODEL DUAL AIR BRAKE SYSTEM The purpose of this bulletin is to generally familiarize

More information

REMOVAL & INSTALLATION

REMOVAL & INSTALLATION REMOVAL & INSTALLATION FRONT DISC BRAKE PADS 1. Raise and support front of vehicle. Remove wheels. Remove caliper bolt and brakeline bracket bolts. Pivot caliper aside. Remove pads and pad shim. Remove

More information

SECTION 4A HYDRAULIC BRAKES

SECTION 4A HYDRAULIC BRAKES SECTION 4A HYDRAULIC BRAKES CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a tool or equipment could easily come in contact with exposed electrical

More information

Diesel Truck Brake Systems

Diesel Truck Brake Systems Western Technical College 32412351 Diesel Truck Brake Systems Course Outcome Summary Course Information Description Career Cluster Instructional Level Total Credits 3.00 Total Hours 108.00 This course

More information

SYSTEM SAVER 318 AIR COMPRESSOR FOR MACK E-TECH AND ASET ENGINES MAINTENANCE MANUAL

SYSTEM SAVER 318 AIR COMPRESSOR FOR MACK E-TECH AND ASET ENGINES MAINTENANCE MANUAL SYSTEM SAVER 318 AIR COMPRESSOR FOR MACK E-TECH AND ASET ENGINES MAINTENANCE MANUAL NON-THROUGH DRIVE THROUGH DRIVE Service Notes About This Manual This manual provides service and repair procedures for

More information

1999 Toyota RAV BRAKES Disc & Drum - Trucks & Vans

1999 Toyota RAV BRAKES Disc & Drum - Trucks & Vans DESCRIPTION & OPERATION 1999-2000 BRAKES Disc & Drum - Trucks & Vans WARNING: For warnings and procedures regarding vehicles equipped with Anti-Lock Brake Systems (ABS), see appropriate ANTI-LOCK article.

More information

Troubleshooting the Transmission Hydraulic System

Troubleshooting the Transmission Hydraulic System Testing and Adjusting IT28F INTEGRATED TOOLCARRIER POWER TRAIN Testing And Adjusting Introduction Reference: For Specifications with illustrations, refer to SENR5974, IT28F Integrated Toolcarrier Power

More information

5-1 Service brake, parking brake and breakaway brake

5-1 Service brake, parking brake and breakaway brake Correct as at 26th September 2018. It may be superseded at any time. Extract taken: from NZTA Vehicle Portal > VIRMs > In-service certification (WoF and CoF) > General trailers > Brakes >, parking brake

More information

Meritor WABCO Antilock Braking System (ABS) 42.06

Meritor WABCO Antilock Braking System (ABS) 42.06 Meritor WABCO Antilock Braking System (ABS) 4.06 Control Valve Replacement Replacement NOTE: Wire repairs may require the use of special tools for certain connectors and terminals. See Group 54 for information

More information

Air Brake Adjustment. What You ll Learn After reading this chapter you will be able to:

Air Brake Adjustment. What You ll Learn After reading this chapter you will be able to: 8 Air Brake Adjustment Fast Fact Your company may have a maintenance crew to keep vehicles safely running. But one person alone is ultimately responsible to ensure that the brakes are operating properly

More information

Instructions Suzuki Samurai Brake System Bleeding. Suggested Tools:

Instructions Suzuki Samurai Brake System Bleeding. Suggested Tools: 86-95 Suzuki Samurai Brake System Bleeding Instructions CAUTION: Safety glasses should be worn at all times when working with vehicles and related tools and equipment. Suggested Tools: Brake Fluid, DOT

More information

Engine Does Not Start or Is Hard to Start Cause of Trouble. 1. Open the drain screw, and check Fuel not supplied (1) Fuel tank empty

Engine Does Not Start or Is Hard to Start Cause of Trouble. 1. Open the drain screw, and check Fuel not supplied (1) Fuel tank empty 20. Engine Does Not Start or Is Hard to Start 20-1 Engine Output Insufficient 20-2 Poor Performance at Low Speed and Idling 20-3 Poor Performance at High Speed 20-3 Unsatisfactory Operation 20-4 Fuel Gauge

More information

BRAKE SYSTEM Article Text 1996 Toyota RAV4 For Copyright 1998 Mitchell Repair Information Company, LLC Wednesday, September 13, :30PM

BRAKE SYSTEM Article Text 1996 Toyota RAV4 For Copyright 1998 Mitchell Repair Information Company, LLC Wednesday, September 13, :30PM Article Text ARTICLE BEGINNING 1996 BRAKES Toyota - Disc & Drum RAV4 * PLEASE READ THIS FIRST * WARNING: For warnings and procedures regarding vehicles equipped with Anti-Lock Brake Systems (ABS), see

More information

BRAKES Driver Information Getting the best from your car

BRAKES Driver Information Getting the best from your car S i Driver Information Getting the best from your car STOPPING FROM THE START Early brakes used a mechanical system of levers and cables to apply braking friction to the wheels. This was adequate when

More information

SD Bendix DD-3 & SD-3 Safety Actuators PUSH PLATE & SHAFT ASSY. LOCKPORT SERVICE DIAPHRAGM SEPARATOR LOCKING PISTON O-RING LOCKING PISTON

SD Bendix DD-3 & SD-3 Safety Actuators PUSH PLATE & SHAFT ASSY. LOCKPORT SERVICE DIAPHRAGM SEPARATOR LOCKING PISTON O-RING LOCKING PISTON SD-02-4600 Bendix DD-3 & SD-3 Safety Actuators AUXILIARY DIAPHRAGM SERVICE DIAPHRAGM SEPARATOR PUSH PLATE & SHAFT ASSY. LOCKING PISTON O-RING LOCKING PISTON LOCKPORT DRAIN SLOT RETURN SPRING CAP O-RING

More information

35-1 GROUP 35 SERVICE BRAKES CONTENTS BASIC BRAKE SYSTEM... 35A ANTI-LOCK BRAKING SYSTEM (ABS)... 35B TRACTION CONTROL SYSTEM (TCL)...

35-1 GROUP 35 SERVICE BRAKES CONTENTS BASIC BRAKE SYSTEM... 35A ANTI-LOCK BRAKING SYSTEM (ABS)... 35B TRACTION CONTROL SYSTEM (TCL)... 35-1 GROUP 35 SERVICE BRAKES CONTENTS.............................. 35A ANTI-LOCK BRAKING SYSTEM (ABS)................... 35B TRACTION CONTROL SYSTEM (TCL)................... 35C 35A-2 GROUP 35A BASIC

More information

CLASS B PRE-TRIP VEHICLE INSPECTION

CLASS B PRE-TRIP VEHICLE INSPECTION Warren County ESC 320 E. Silver Street Lebanon, OH 45036 April 1, 2006 CLASS B PRE-TRIP VEHICLE INSPECTION A vehicle inspection test evaluates your ability to inspect important parts of a commercial vehicle.

More information

Page 1 of 23 593: Brake control system V70 (00-08), 2004, B5244S2, M56, L.H.D, YV1SW65S241436824, 436824 16/7/2018 PRINT 593: Brake control system ABS control ABS function Active yaw control Active yaw

More information

As a safety precaution, remove keys from the ignition while working under or around the vehicle.

As a safety precaution, remove keys from the ignition while working under or around the vehicle. CAB AND CHASSIS As a safety precaution, remove keys from the ignition while working under or around the vehicle. 1. Approach Check the overall appearance of vehicle stance (not leaning). Check for signs

More information

FUNDAMENTAL PRINCIPLES

FUNDAMENTAL PRINCIPLES FUNDAMENTAL PRINCIPLES Fundamental Principles The most important safety feature of an automobile is its brake system. The ability of a braking system to provide safe, repeatable stopping is the key to

More information

COASTAL BEND COLLEGE AUTOMOTIVE TECHNOLOGY SYLLABUS (rev. Fall 2012)

COASTAL BEND COLLEGE AUTOMOTIVE TECHNOLOGY SYLLABUS (rev. Fall 2012) COASTAL BEND COLLEGE AUTOMOTIVE TECHNOLOGY SYLLABUS (rev. Fall 2012) AUMT 1310: Automotive Brake Systems SEMESTER HOURS: 3 TEXTBOOK Automotive Technology A systems Approach COURSE DESCRIPTION; Operation

More information

CHASSIS CONTENTS EXTERIOR PARTS 6-1 FRAME COVER 6-2 REAR FRAME COVER 6-4 FRONT WHEEL 6-6 FRONT BRAKE 6-10 HANDLEBARS 6-17 FRONT FORK 6-19

CHASSIS CONTENTS EXTERIOR PARTS 6-1 FRAME COVER 6-2 REAR FRAME COVER 6-4 FRONT WHEEL 6-6 FRONT BRAKE 6-10 HANDLEBARS 6-17 FRONT FORK 6-19 CHASSIS CONTENTS EXTERIOR PARTS 6- FRAME COVER 6- REAR FRAME COVER 6-4 FRONT WHEEL 6-6 FRONT BRAKE 6-0 HANDLEBARS 6-7 FRONT FORK 6-9 STEERING 6-6 REAR WHEEL 6-3 REAR BRAKE 6-39 6 REAR SHOCK ABSORBER 6-43

More information

This list applies to buses (other than motor coaches), minibuses and any trailer towed by a bus, minibus or motor coach.

This list applies to buses (other than motor coaches), minibuses and any trailer towed by a bus, minibus or motor coach. List 2 Bus This list applies to buses (other than motor coaches), minibuses and any trailer towed by a bus, minibus or motor coach. 1. Coupling devices The defects provided for in points 1.C and 1.F apply

More information

SERVICE BRAKES GROUP 35A 35A-1 CONTENTS GENERAL DESCRIPTION... 35A-2 BRAKE PEDAL... 35A-22 BASIC BRAKE SYSTEM DIAGNOSIS 35A-3

SERVICE BRAKES GROUP 35A 35A-1 CONTENTS GENERAL DESCRIPTION... 35A-2 BRAKE PEDAL... 35A-22 BASIC BRAKE SYSTEM DIAGNOSIS 35A-3 35A-1 GROUP 35A CONTENTS GENERAL DESCRIPTION 35A-2 BASIC BRAKE SYSTEM DIAGNOSIS 35A-3 INTRODUCTION TO BASIC BRAKE SYSTEM DIAGNOSIS 35A-3 BASIC BRAKE SYSTEM DIAGNOSTIC TROUBLESHOOTING STRATEGY 35A-3 SYMPTOM

More information

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS INSTALLATION INSTRUCTIONS REAR DISC CONVERSION KIT A128 1990-1995 JEEP WRANGLER (YJ) WITH DANA 35 AXLES (non-abs) Thank you for choosing STAINLESS STEEL BRAKES CORPORATION for your braking needs. Pleases

More information

L Rev. 10/04. CSI Midland/Gunite Automatic Brake Adjuster Service Manual

L Rev. 10/04. CSI Midland/Gunite Automatic Brake Adjuster Service Manual L30006 Rev. 10/04 CSI Midland/Gunite Automatic Brake Adjuster Service Manual TABLE OF CONTENTS Overview...3 Installation Procedures...4 Brake Adjustment...10 Installation Procedures...11 Brake Adjustment...13

More information

Appendices. Appendix 2 Lists of Defects. List 1 Heavy vehicle

Appendices. Appendix 2 Lists of Defects. List 1 Heavy vehicle 146 Appendix 2 Lists of Defects List 1 Heavy vehicle This list applies to heavy vehicles other than a bus, minibus or motor coach. Any trailer towed by a bus, minibus or motor coach must be inspected in

More information

Webinar Series APTA Standards Quarterly Webinar Series

Webinar Series APTA Standards Quarterly Webinar Series 1 Webinar Series APTA Standards Quarterly Webinar Series Presented by APTA Brake and Chassis Working Group Disc Brake Wheels On Inspection January 26, 2017 2 Moderator Presenter Jerry Guaracino Assistant

More information

MP18 Stacking Valve System Technical Information Manual

MP18 Stacking Valve System Technical Information Manual Electric Drives and Controls Hydraulics Linear Motion and Assembly Technologies Pneumatics Service MP18 Stacking Valve System Technical Information Manual The Drive & Control Company Copyright 1996 Bosch

More information

200C II BRAKE SYSTEM

200C II BRAKE SYSTEM 200C II BRAKE SYSTEM The braking system on the 200C II Kress Coal Hauler uses hydraulic oil pressure from both the System and Steering accumulator circuits. Using oil from both circuits provides braking

More information

Electrical Braking System Simulation and Control based on Force to Voltage Conversion using Servo Motor

Electrical Braking System Simulation and Control based on Force to Voltage Conversion using Servo Motor Electrical Braking System Simulation and Control based on Force to Voltage Conversion using Servo Motor Mohammad A Obeidat Abstract In this paper an electrical braking system is proposed. The force on

More information

PRE-TRIP Inspection. CDL Skills Test

PRE-TRIP Inspection. CDL Skills Test CDL Skills Test PRE-TRIP Inspection Engine Compartment +1 Axle Side and Back of Truck +1 Axle Connections and Trailer +1 Axle External Light Check In-Cab with Brake Check 7505 Dahlia St. Commerce City,

More information

Engine Compartment Inspection

Engine Compartment Inspection Engine Compartment Inspection Unit Contents Student Page Student Components Learning Activities Sheet... 7 3 Abbreviated Checklist.... 7 5 Objective Sheet... 7 7 Expanded Checklist... 7 9 * Job Sheets

More information

FAST BRAKE INDEX. trouble-shooting guide

FAST BRAKE INDEX. trouble-shooting guide FAST BRAKE trouble-shooting guide INDEX INTRODUCTION 3 PRECAUTIONS 3 INSPECTION 4 Q&A Why does my spring brake have square air-inlet ports? 4 Why is the yoke welded to the service push-rod? 6 What do I

More information

Axle Components. 12,000 lbs. Capacity

Axle Components. 12,000 lbs. Capacity 12,000 lbs. Heavy Duty Components 27-358 Unitized Oil Seal - disc or drum (Dimensions are 3.125 x 4.506 x.605) 2 010-056-00 27-342 3984 Inner Bearing (Inside diameter 2.625 ) 3 031-020-02 27-343 3920 Inner

More information

Webinar Series. APTA Bus Technical Maintenance Committee Webinar Series. Disc Brake Wheels On Inspection. Presents

Webinar Series. APTA Bus Technical Maintenance Committee Webinar Series. Disc Brake Wheels On Inspection. Presents 1 Webinar Series APTA Bus Technical Maintenance Committee Webinar Series Presents Disc Brake Wheels On Inspection January 28, 2015 2 Introduction Welcome to today s webinar in which we will cover a wheels

More information