1. IMPORTANT NOTICES subject to change without notice. NOTE

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1 1. IMPORTANT NOTICES This manual is provided to every owner of a new Deloupe trailer. The manual outlines the appropriate maintenance and operation procedure so that you as an owner/operator will get the most out of your trailer investment. We have attempted to cover as much information as possible in this manual. However, this information does not cover all the unique variations that a Deloupe trailer may present. Note that illustrations are typical but may not reflect all the variations of assembly. Also all date provided is based on information that was current at time of release. This information is subject to change without notice. NOTE: The Operation Procedures section of this manual is intended as a guide to basic trailer operation only. As usage needs may vary, it can only be a guide. Deloupe Inc. disclaims any and all responsibility for any situation that may arise as a result of improper operation. Ensure all operators and maintenance personnel are trained and capable before operating or maintaining the equipment. If you have any questions concerning safety or the proper operating and/or maintenance procedures for this Deloupe trailer, please contact us at (418) Rev3 December 15, 2017

2 2. WARRANTY UNAUTHORIZED PRODUCT CHANGES Changes of any kind to the Deloupe Inc. product could affect its integrity and its ability to perform as design or intended. It is a Deloupe Inc. policy that NO CHANGES are to be made to its product other than Deloupe Inc. authorized changes fitted in the factory approved manner. Options or changes are only officially approved in the following form: a) Standard options for that product shown or listed on a current printed specification sheet price list, parts manual, or product literature issued by Deloupe Inc. b) Clearly specified options or product changes approved in writing by the Deloupe engineering department. Deloupe Inc. disclaims responsibility for any situation that may arise as a result of unauthorized change to its product. If any person or organization modifies or contributes in any way to unauthorized modification, the person or organization will be deemed to have assumed the risk involved in such modification and may be deemed negligent in creating a dangerous situation resulting from such action. Failure to adhere to this policy nullifies and voids both the product warranty policy and the certification on any safety items installed. Non approved product changes also nullify warranties given to Deloupe Inc., by its component manufacturers. If you are unsure how to service or maintain any Deloupe equipment, please contact us. 2

3 3. MAINTENANCE BREAK-IN PERIOD Suspension After the first 500 miles, all bolts should be re-torqued to specs. Take special note that bolt torque values for air ride suspensions are different than walking beam or spring suspension bolt torque values. If suspension is air ride, check shocks for leaks; also check air bags for damage that may lead to rupture and all air fittings for minor leaks. Tighten if required. Axles 1. Check bearing adjustment, after the initial 25 miles, by placing hand on wheel hub. If excessive heat is detected then check bearing adjustment. 2. Check tire inflation after the initial trip. 3. Check torque on wheel nuts to spec after initial 25 miles. 4. Change hub oil after first 1,000 miles. Burnishing of New Brake Linings New brake linings must be properly burnished before full brake performance can be obtained. Failure to burnish new linings will cause premature wear and glazing of lining and drums resulting in expensive repairs. During the first miles, brake application pressures should be reduced to 50% of normal, gradually increasing to normal over the 1000 mile break in period. Paint For the first 30 days of operation, do not use high-pressure sprayers, strong cleaning agents, detergents, abrasives or brushes. Wash trailer only with water and a soft sponge. 3

4 MAINTENANCE CHART MAINTENANCE PROCEDURE Visual inspection of Main Structure Clean and Grease Fifth Wheel Plate Torque All Hitch Bolts to Recommended Spec Check and Torque Rubber Bushed Hitch Knuckles INITIAL 25 MILES DAILY 1,000 MILES WEEKLY 3,000 MILES EVERY MONTH 10,000 MILES THREE MONTHS 25,000 MILES SIX MONTHS 50,000 MILES YEARLY 100,000 MILES Grease Landing Gear Lubricate Automatic Slack Adjusters Check Wheel Bearing Adjustment (adjust if necessary) Check Wheel Bearing and Check Wear Check Oil Level in Oil Bath Hubs Drain and Replace Oil in Hubs Check Brake Adjustment & Push Rod Travel Torque Wheel Studs/Nuts to Recommended Spec Check and Adjust Air Pressure in Tires Initial break-in periods Regular maintenance shown in maintenance chart is to be followed after the initial break-in period checks and adjustments are complete. 4

5 MAINTENANCE CHART MAINTENANCE PROCEDURE Check and/or Adjust Wheel Alignment Check All Rubber Bushings in Suspension System Torque all Suspension Bolts/Nuts to Recommended Spec. Inspect all Spring Hanger Wear Pads for Wear Torque all Axle U-Bolts to Recommended Spec. Visually Inspect all Springs Inspect tires for damage & uneven wear patterns Drain Air from Reservoir Tanks Check Complete Air Brake System for Air Leaks Apply Light Coat of Grease to Electrical Connectors Visual Inspection of all Lights Visual Inspection of Brake Pads & Disc Check Brake Pads, Discs and Slide Function Check Play Inside Pins & Protection Boots INITIAL 25 MILES DAILY 1,000 MILES WEEKLY 3,000 MILES 5 EVERY MONTH 10,000 MILES THREE MONTHS 25,000 MILES SIX MONTHS 50,000 MILES Initial break-in periods Regular maintenance shown in maintenance chart is to be followed after the initial break-in period checks and adjustments are complete. YEARLY 100,000 MILES

6 BOLT TORQUE VALUES APPLICATION SIZE TORQUE (FT.-LB.) WHEEL STUDS DISC WHEELS 3/ WALKING BEAM AND SPRING 1/2 50 SUSPENSION BOLTS 5/ / / / / / RIDEWELL AIR RIDE COMPONENTS PIVOT BOLT 1 1/ SHOCK BOLT 3/4 200 AIR BAG BOTTOM 1/2 25 AIR BAG NUT (TOP) 3/4 50 NOTE: DO NOT APPLY ADDITIONAL LUBRICANT. CHECK AT REGULAR INTERVALS. 6

7 AXLES After the first 25 miles, the temperature of all hubs should be checked. The hubs should run warm, but if they feel hot, then the wheel bearing adjustment should be checked. Check if the axial play is between '' and ''. If the axial play is not correct, please refer to the stemco pro-torq nut adjustment procedure. OIL BATH HUBS The hubs have been filled with 75W-90 Synthetic oil. The oil level in the hubs should be checked through the inspection window prior to every trip to be sure they are at the required level. TIRES While the tires are cold, air pressure should be checked daily, as recommended by the tire manufacturer. Tires should be checked frequently for cuts, abrasions or foreign objects lodged in the thread or between the duals. If any of these situations are found, they should be corrected immediately. 7

8 AUTOMATIC SLACK ADJUSTERS Lubrication The self-adjusting slack adjuster should be lubricated in conjunction with the lubrication prescribed for the vehicle chassis. The lubrication interval should not, however, exceed 50,000 miles or 3 months. Hipertech APG1 grease is recommended. The use of moly-disulphide loaded grease or oil is not recommended since it may lower friction capabilities in the adjusting clutch parts, and decrease automatic adjustment reliability. Inspection 1. During normal lubrication intervals, visually inspect slack adjuster and anchor bracket for damage. Check that anchor bracket is tight and the control arm is in its Full Release position. 2. Maintaining proper brake adjustment and brake balance cannot be accomplished by the slack adjuster alone. The condition of foundation brake components has a direct bearing on the effectiveness of brake adjustment. Therefore, periodic inspection of these components is necessary. a) BRAKE CHAMBERS Check that brake chamber mounting bolts are tight and proper alignment is maintained to avoid interference between chamber pushrod and chamber housing. Verify that brake chamber pushrod length is equal on opposing brake chambers of the same axle. b) CAMSHAFT BUSHINGS Optimum brake adjustment cannot be achieved when worn bushings are used. 8

9 In Service Checking Procedure A self adjusting slack adjuster should never have to be manually adjusted in service. The only time it should be manually adjusted is during installation or at reline. By constantly manually adjusting, the internal clutch life can be shortened. Effective push rod travel as recommended by the air chamber manufacturers. Type 36 1 ½ to 2 ¼ stroke Type 30 1 ½ to 2 stroke 100 PSI service Type 30 long stroke 1 ½ to 2 ½ stroke brake application Type 24 long stroke 1 ½ to 2 stroke Type to 1 ¾ stroke The air chamber push rod stroke can be difficult to measure properly; the following methods can be used : With a tape measure, measure the movement of the push rod from the completely released position to the applied position (100 PSI, Fig. 1). This movement can also be measured by marking the push rod where it exits the air chamber (brake released), then apply the brake and measure the distance from the mark to the face of the chamber. Also note in the fully applied position if the push rod over stroke indicator is exposed. If the adjuster is not maintaining the proper push rod travel, before replacing the slack adjuster, check the condition of the foundation brake i.e. : worn cam shaft bushing, worn cam shaft, weak or broken return springs, etc. The adjuster is not a cure-all for deficiencies in the foundation brake. 9

10 Measure of the free stroke Measure the free stroke (Fig.3). Use a lever to measure the movement of the slack adjuster until the brake shoes contact the drum. The free stroke should be 1/2 to 5/8. The brakes may drag if they are adjusted to less than 1/2 free stroke (free stroke is the amount of movement of the automatic slack adjuster to move the brake shoes against the brake drum). Take the free stroke measurement using the following procedure: - Measure from the face of the brake chamber to the center of the clevis pin while the break is release (measure x) - Use a pry bar to move the slack adjuster and position the linings against the drum, brakes applied. Measure the same distance again (measure y) - Subtract X from Y to obtain the in-service free stroke. The measurement must be inch If the free stroke measurement is not within specification, please refer the the slack adjuster manufacturer procedure to readjust them. 10

11 6. WHEELS After the first 25 miles, carefully check all lug nuts or wheel studs to be sure that none have worked loose. For disc wheels, all studs (3/4-16) are to be torque to 500 ft.-lb. dry. All wheels should be checked periodically for cracks or distortions. Break In Period First 1000 miles. All threads are right hand metric. Tighten flange nuts to 50 ft-lb. following sequence shown. Check disc wheels for proper positioning on pilots and proper seating against drum back. Tighten flange nuts 450 to 500 ft.-lb following sequence shown. INNER CAP NUTS Torque cap nuts to 50 ft.-lb. using sequence shown. Then tighten cap nuts to recommended torque ft.-lb. DRY OUTER CAP NUTS Torque cap nuts to 50 ft lb. using sequence shown. Then tighten cap nuts to recommended torque ft.-lb. DRY 11

12 8. AIR SYSTEM Suspension Ride Height Adjustment Ridewell RAR K US model air suspension is designed to operate at the specified ride height. The ride height is the distance from the center line of the axle to the underside of the frame, at the axle to which the height control valve is attached. The correct ride height is indicated by the first number after a dash in the model number. For example, models would require a 9 ride height. If measuring to the top of the axle, add 2 1/2 to your measurement to determine the actual ride height (e.g. a measurement to the top of the axle of 6 ½ would indicate a 9 ride height). Air Ride Height Adjustment To adjust your air ride height, connect the trailer to a compressed air supply with approximately the pressure of the normal supply system. Measure the ride height if you wish the trailer to be raised or lowered. Adjust the height control valve by loosening the clamped rod end on the adjustment rod attached the valve. Relocate the rod end until the proper height dimension is obtained. Re-clamp the rod end to the rod at this time. When adjusting the ride height control valve, block the tires and release the trailer brakes. The axle must rotate freely in order to avoid a false reading. The height control valve has very small orifices and 5 to 15 second time delay. You must allow sufficient time for the system to stabilize. The response time will appear to be extremely lengthy. Be patient. Once set to the proper ride height, test-drive the trailer, and then check the ride height once again to assure an accurate adjustment. Notice that the use of one valve removes the requirement for synchronization found with most other air suspension systems. This feature will save you many hours of service time and much expense in servicing your air system. 12

13 AIR TANKS The air reservoir tanks are equipped with a drain cock to release all the air that is being stored in the tank. Periodically, these reservoirs should be drained, as condensation will cause moisture to accumulate in the tank and may lead to freeze up problems in the system. If the condensation is milky in color, the truck air compressor may need attention. AIR VALVES These valves control the air brake system and therefore should be checked frequently for air leaks which could affect the operation of the brakes. Always install wheel chocks both in front and rear of tires before checking for leaks. Leaks may be checked for by pressurizing for air bubbles that would indicate a leak. Any air leaks should be corrected immediately. GLAD HANDS Insure positive engagement with mating glad hand, check brakes for proper application (Glad hand may be switched if brakes don t apply). If Glad hands leak air, seal may have to be replaced. AIR LINES Check air lines for leaks or damaged areas. Worn or damaged air lines should be replaced immediately. Air leaks should also be fixed immediately. Air leakage can overburden the truck air compressor and could affect the reservoir pressure. 13

14 AIR BRAKE CHAMBERS On the spring brake style, air pressure within the brake chamber is required to release the spring (emergency) brake. When the trailer is supplied with air pressure the spring is automatically released, but if air pressure is lost then the spring automatically applies the emergency brake. In addition to this system, there is also a built in release tool that may be used to release the brakes in the absence of air pressure. Remove the tool that is stored in the side of the chamber by removing the nut and washer. Insert the tool into the hole in the back of chamber. Turn the tool about one quarter of a turn to engage it. Install washer and nut previously removed onto end of tool. With a wrench, turn the nut clockwise so that the tool retracts the spring. To return brake system to regular running condition, simply reverse this procedure, remove the tool and return it to the storage position. Air brake chambers should be carefully inspected every 50,000 miles or yearly. Diaphragms and any marginal parts should be replaced. Replace the corresponding parts for the other chamber on the same axle. This will aid in even brake application and releasing. WARNING: Service on these chambers should only be done by a qualified serviceman. Inexperience could result in serious injury or death. 14

15 9. ELECTRICAL Connector Plug Combo Periodically check both halved for contact corrosion or loose connections. Either or both conditions can affect current flow. Proper operation of lights requires a clean, secure contact of the electrical connector. A light coating of grease should be maintained on both connectors to prevent corrosion. Wiring Periodically check the wiring for damage or poor connections and repair immediately. Lights Your trailer has been equipped with LED tail, signal and brake lights. The main connections are made of Sealco harness and the auxiliary lamps are typically connected in the rear bumper accessed by removing the tail light. It is important to never cut the harness. Several auxiliary outputs are available on this harness. Wire Colour Codes White Black Yellow Red Green Brown Blue Ground Auxiliary lamps Left hand turn signal Stop lamps Right hand turn signal Marker / Clearance & Licence ABS signal (if equipped) WARNING: Service on electrical components should only be done by a qualified serviceman. Inexperience could result in serious injury or death. 15

16 9. ELECTRICAL Connection of 7-pole plug and ISO plug (ABS) 16

17 10. PAINT The best way to maintain your trailer s lustrous finish is to keep it clean by frequently washing with warm water. Ice melting salt, road oils and tar, tree sap, chemicals and other foreign matter may damage the trailer s finish if left on painted surfaces. Prompt washing may not completely remove all the deposits and additional cleaners may be needed. When using additional cleaners, be sure they are safe for use on painted surfaces. If cleaning agents are used, they should be flushed from the surface and not allowed to dry. Any major stone chips or deep scratches should be repaired promptly. Bare metal will corrode quickly and may develop into major repair expense. 17

18 11. KING PIN UPPER COUPLER PARTS & PROCEDURE Visually inspect the mounting of the upper coupler or plate and measure the curve of the upper coupler using a straight rod at least one metre long and a slide caliper. KING PIN Visually inspect the mounting and condition of the king pin, measure its wear with an appropriate tool and check the angle using a square that is longer than 40 cm (16 in) on one side. DESCRIPTION OF DEFECT - The upper coupler is curved downwards more than 6.4 mm (1/4 in), or more than 1.6 mm (1/16 in) upwards within a radius of 483 mm (19 in) measured from the king pin. - The upper coupler is corroded to the point of weakening its resistance or the solidity of its mounting to the vehicle. - The upper coupler is cracked, not securely mounted, or warped to the point of adversely affecting the coupling - The king pin and upper coupler are not at a right angle respectively in all directions. - The king pin has been repaired by means of welding. - The king pin is worn such that the diameter in a given spot is reduced by more than 3.2 mm (1/8 in). - The king pin is cracked, not securely mounted, or warped to the point of adversely affecting the coupling. 18

19 TURNABLE PLATFORM PARTS & PROCEDURE If the upper coupler and king pin are mounted on a turntable platform, visually inspect the safety, working order and vertical play of the mounting using a micrometer. If a lube liner disc is used, it does not eliminate the need to grease the fifth wheel pivot knuckle, kingpin, and kingpin jaws. DESCRIPTION OF DEFECT The platform is not securely mounted, the bearings are seized up or there is a vertical play of more than 6.4 mm (1/4 in). FIFTH WHEEL Visually inspect the following components: General Information A component of the coupling device is not firmly attached to the towing vehicle, is cracked, broken, bent, missing, worn or so poorly adjusted that it might break or rupture. More than 20% of the fasteners on the coupling device are missing or ineffective. In the case of a tractor coupled with a semi-trailer: The king pin is not properly engaged. There is movement between a fastener of the coupling device and the frame of the tractor or semitrailer. 19

20 PARTS & PROCEDURE a) Supports DESCRIPTION OF DEFECT The horizontal play between the king pin and the jaws exceeds 12.8 mm (1/2 in). A support is broken, cracked, bent, has been repaired by means of welding or is not firmly attached to the vehicle, or a bolt is loose, missing or of a class lower than SAE Class 8 (or 10.9 mm). b) Jaws and locking device For tractors not coupled with a semi-trailer, the jaws and locking device are checked using a tool attached to a king pin. For a combination of road vehicles, the play between the jaws and the king pin is measured as follows: Apply the trailer brake; Back the trailer up; Put a mark on both parts of the coupling device; Drive the tractor forward and apply the service brake; Measure the space between the two marks. c) Jaw tow pins In the case of a combination of vehicles or using an appropriate tool, the horizontal play between the jaw and kingpin exceeds 6.4 mm (1/4 in). The jaw or locking device is seized up, not properly adjusted, cracked, broken or has been repaired by means of welding. A tow pin is loose. 20

21 PARTS & PROCEDURE a) Coupling plate DESCRIPTION OF DEFECT The plate is cracked, broken, bent or has been repaired by means of welding. There is a crack, weld or break in a part of the coupling plate that bears a load or is subject to tension or shear stress. b) Pins of coupling plate c) Slide supports and stoppers in sliding king pins The horizontal play between the pins exceeds 9.5 mm (3/8 in). A front or rear stopper is missing or not firmly attached. A sliding support is cracked or worn. The side, vertical or lengthwise movement of the sliding position. More than 25% of the locking pins on either side of the king pin are missing or not working. The lengthwise play in the locking mechanisms of the slides exceeds 9.5 mm (3/8 in). Source: Edition: Direction des communications, Société de l assurance automobile du Québec Août

22 12. TROUBLESHOOTING Most electrical system problems show up as a burned out light or fuse, or inoperative electrical component. Wiring, grounds, or components may be at fault. Locate the symptom in this section that best identifies your electrical problem. Check out each possible solution under that system. If the problem cannot be located, see an electrical specialist. PROBLEM NO LIGHTS LIGHTS FLICKERING LIGHTS DIM LIGHTS BRIGHT & BURN OUT FUSE BLOW OUT / CIRCUIT BREAKER TRIPPING LAMP BULB BURN OUT LIGHTS DIMS WHEN TURN SIGNAL IS FLASHING PROBABLE CAUSE AND/OR SOLUTION : - Fuse blown : replace fuse - Broken/corroded wires : replace wires - Ground wire lose: clean and re-tighten ground wire - Connection at plug-in : tighten connection - Wires loose or shorted out : locate, insulate, replace, or tighten - Voltage difference : match bulbs with tractor voltage - Voltage difference : match bulbs with tractor voltage - Short circuit : replace fuse & try all accessories - Vibrations : locate source of vibrations and repair if fuse blows right away locate short and repair - Vibrations : locate source of vibrations and repair - Short circuit : replace fuse and try all accessories if fuse blows right away located short and repair - Loose connection : check lamp sockets and ground connections - Intermittent Short : locate short and repair - Improper voltage : check voltage regulator output - Weak ground : check that ground wire is clean - Too many lamps on signal : use LED lamps to reduce power consumption 22

23 TIRES WHEELS - SUSPENSION Most tires, wheel and suspension related problems are due to excessive loads, extreme conditions, and improper maintenance. Tire, wheel, and suspension problems can be easily detected and solved by checking the following guide. PROBLEM VIBRATIONS WHILE DRIVING RAPID TIRE WEAR/DETERIORATION : CENTER TREAD WEAR SHOULDER TREAT WEAR BOTH SHOULDERS SHOULDER TREAD WEAR ONE SHOULDER OVERAL TREAD WEAR TIRE FLAT SPOTS PROBABLE CAUSE AND/OR SOLUTION : - Improper tire inflation : inflate to proper pressure - Wheel bent or loose : replace or tighten - Tires cupped or have flat spots : replace tires - Tires incorrectly mounted : remount - Mud in wheels : clean wheels - Tire(s) out of balance : balance tire(s) - Brakes dragging : locate cause and repair - Object(s) stuck between duals : remove object(s) - Over inflation : deflate to proper pressure - Under inflation : inflate to proper pressure - Axle damage : straighten or replace axle - Overloading : check tire load rating - Incorrect dual matching : properly math dual tires - High speeds : adjust speed according to road and load conditions - Quick stops : adjust braking practices - Grabbing brakes : adjust brakes - Worn or loose wheel bearings : adjust or replace as needed - Out of balance wheels and tires : balance wheels and tires 23

24 UNEVEN WEAR - Worn or loose wheel bearings : adjust or replace as needed - Out of balance wheels and tires : balance wheels and tires - Undercarriage bushings worn : replace bushings - Axles out of alignment : contact Deloupe Inc. CRACKING RIMS - Over inflation or tires : deflate to proper pressure - High speeds : adjust speed according to road and load conditions - High speed cornering : adjust cornering practices - Over loading : check rim load rating BENDING OR WARPING RIMS - Curb-Hopping or potholes : adjust turning practices and adjust speed accordingly with road conditions - Improper tightening sequence : follow proper tightening sequence BROKEN STUDS - Incorrect tightening : use correct torque when mounting : replace immediately TRAILER TRACKING : TRACKS TO ONE SIDE - Axle alignment : re-align axle TRACKS TO EITHER SIDE - Broken or bent springs or equalizers : replace defective parts - Worn suspension bushings, loose bolts, cracked or damaged suspension components : replace defective parts 24

25 BRAKES PROBLEM PROBABLE CAUSE AND/OR SOLUTION : NO BRAKES OR BRAKES ARE INTERMITTENT SINGLE BRAKE DRAGGING OR LOCKED UNEVEN BRAKES - Brake air system improperly connected : reconnect hand valves properly - Relay/emergency valve plugged : clean valve - Defective tractor protection valve : repair or replace - Restricted tubing or hose line : locate and eliminate restriction - Broken line : locate break and repair - Tractor air system failure : troubleshoot tractor air system and repair - Broken internal brake component : locate and replace - Flat spot on cam roller or can shaft : replace and lubricate - Improper adjustment : adjust slack adjusters - Spider bushing or cam bracket, bushing or binding : lubricate or replace - Worn brake shoe bushing : replace bushing - Brake drum distortion : replace drum - Broken brake chamber spring : replace chamber - Brake chamber pushrod binding : re-align brake chamber bracket - Air brake line loose or broken : tighten or replace - Restriction in hose : locate restriction and remove - Worn brake linings : reline brakes - Grease on linings : reline brakes - Broken slack adjuster : replace - Leaking brake chamber diaphragm : replace 25

26 BRAKES RELEASE TOO SLOWLY ALL BRAKES DO NOT RELEASE INSUFFICIENT BRAKES BRAKE GRABBING EXCESSIVE LEAKAGE WITH BRAKES RELEASED - Brakes need adjusting or lubrication : adjust or lubricate as needed - Brake rigging binding : align brakes or replace bent parts - Exhaust port of relay valve restricted or plugged : clean valve - Air system improperly connected to tractor: tighten or adjust connections - Brake valve on tractor is applied : release brake - Relay emergency valve in emergency position: check line pressure and check valve - Restricted tubing or line : locate restriction and remove - Defective tractor protection valve : troubleshoot tractor air system - Parking brake locked : troubleshoot air system - Brakes need adjusting, lubricating or relining : adjust, lubricate or reline as needed - Low air pressure : troubleshoot air system - Defective relay emergency valve : repair or replace - Brakes overheated : stop and allow brakes to cool, locate cause of overheating - Grease on brake lining : reline brakes - Brake rigging binding : align brakes or replace bent parts - Defective brake valve on tractor : repair or replace - Defective relay emergency valve : repair or replace - Relay emergency valve leaking : repair or replace - Leaking tubing or hose : replace defective part 26

27 EXCESSIVE LEAKAGE WITH EMERGENCY SYSTEM ONLY APPLIED NO LEAKAGE WITH NORMAL BRAKING EXCESSIVE WATER PRESENT IN BRAKE SYSTEM EXCESSIVE OIL PRESENT IN BRAKE SYSTEM BRAKES WILL NOT APPLY PROPERLY BRAKES WILL NOT APPLY WHEN EMERGENCY LINE DISCONNECTED TIGHT OR DRAGGING BRAKES EXCESSIVE CHAMBER PUSHROD TRAVEL - Defective relay emergency valve : repair or replace - Reservoir not drained often enough : drain daily - Compressor on tractor passing excessive oil : repair compressor - Flat spot on cam roller or cam shaft : replace and lubricate - Initial air pressure too low : allow air system to build up to minimum 90 PSI and stabilize - Defective relay valve : repair or replace - Air line leak : locate leak and repair or replace - Brake chamber leak : locate leak and repair or replace - Control arm anchor bracket not positioned properly - Brake chamber not fully releasing : - Spring brake not fully releasing - Pushrod binding on chamber housing - Air supply not exhausting completely - Extreme differences in lining to drum clearances between shoes on same wheel - Broken shoe return spring - Loose, broken or bent control arm anchor bracket : tighten repair or replace - Worn cam shaft bushing : replace - Worn clutch assembly : repair or replace 27

28 BRAKE DRUMS PROBLEM EXCESSIVE LOSS OF BRAKES OR FADING BRAKES PULL TO EITHER SIDE ROUGH OR NOISY BRAKING ACTION PROBABLE CAUSE AND/OR SOLUTION : - Overheated brake drums : check for defective or misadjusted brake linings, distorted or over-machined drums - Also check for operating conditions or loads that create excessive brake applications - Drums of different diameters : replace with drums of same diameter - Foreign matter in drum : clean drums out - Defective drums : pull drums and inspect for any of the following: - Heat spotted drums, grease spotting, blue drums, scored drums, excessive wear at rivet holes or edges, polished drums, out of round drums, unbalanced drums, worn/damaged brake components, foreign matter in drums. - Correct situation or replace defective part(s). VIBRATION IN RIDE - Defective or out of round drums : replace - Out of balance drums : replace 28

29 SUSPENSION PROBLEM PROBABLE CAUSE AND/OR SOLUTION : AXLES NOT EQUALIZING TRAILER TRACKS CONSTANTLY TO ONE SIDE TRAILER TRACKS FROM SIDE TO SIDE TRAILER TRACKS TO ONE SIDE UNDER LOAD SUSPENSION BEAMS SHIFTING OFF OF THE BUSHING SHOCKS BREAKING - Suspension ride height varying due to sloping trailer or trailer frame deflection: correct tractor fifth wheel height. - For frame deflection : contact Deloupe Inc. - Trailer out of alignment : refer to Suspension Maintenance or contact Deloupe Inc. - Broken alignment collar welds : contact Deloupe Inc. - Suspension not square to axle - Air springs misaligned or rarely the pivot bushing fail : refer to Suspension Maintenance or contact Deloupe Inc. - Incorrect alignment : corrected by rebush and realignment of suspension - Beams are not parallel - Frame bracket center do not match suspension beam centers or none of the above : contact Deloupe Inc. - Failure to dump suspension air prior to unloading trailer - Incorrect shock part number or brand : replace with correct part - Incorrect ride height : adjust height control valve - Incorrect shock bolt torque : replace shock and correctly torque bolt - Incorrect shock mounting location : contact Deloupe Inc. 29

30 NOTES 30