Chapter 32. Landing gear

Transcription

1 Chapter 32 Landing gear PAGE DATE: 1. June 1995 PAGE 1

2 TABLE OF CONTENTS Chapter Title LANDING GEAR MAINTENANCE PRACTICES Main Landing Gear Top Half of the Mounting Clamp Tail spring Tail Wheel Fork Assembly Tail Wheel WHEELS AND BRAKES General MAINTENANCE PRACTICES Master Cylinder PAGE DATE: 1. June PAGE 2

3 LANDING GEAR The EXTRA 300L is designed as a conventional tail wheel airplane, with an unretractable landing gear. The landing gear consists of a 2 wheel main landing gear and a tail wheel. The main wheels are interconnected and attached to the fuselage by means of an U-shaped carrier. This carrier is of integral glasfibre design and incorporates wheel alignement, spring and dampening action. The tail wheel is self steering with full swivel capability. The values for wheel rake and toe-in of main landing gear are given in Figure 1A. 9DAA 4= A 6 A E 6 AH=?A # #. ECDJ,EHA?JE # 8= KAI =HA CELA B H C CA=H K =@A@ Wheel Rake and Toe-in Figure 1A 6 AH=?A # PAGE DATE: 1. June PAGE 3

4 ! )1 6- ) +-24)+61+-5! =E C/A=H 4A L= 1 IJ= =JE Refer to Figure 1 1 Remove the engine cowling, the landing gear cuffs and the bottom covering sheet as per chapter Shore the aircraft as per Chapter Drain brake system. 4 Unfasten the ventilation tubings and brake lines, and disconnect the brake lines from the brake assembly. 5 Remove the four landing gear attachment stop nuts (LN ) (1) and the DIN 125 M10 washers. 6 Remove the bottom halves of the mounting clamps (2), the anti abrasion strips (3) and the landing gear (4). 7 Install in reverse sequence of removal using new stop nuts. For correct position of landing gear the mandrel, which is located at the bottom of the fuselage, is to put into the respective sleeve at the top of the landing gear spring. Replenish brake fluid.! 6 F0= B BJDA K JE C+ = F 4A L= 1 IJ= =JE Refer to Figure 1 1 Remove the main landing gear as per Chapter Remove the LN stop nuts, the DIN125 M10 washers and the LN bolts (5). 3 Remove the top half of the mounting clamp (6). 4 Reverse procedure for installation. PAGE DATE: 1. June PAGE 4

5 MAINTENANCE PRACTICES Top Half of the Mounting Clamp Main Landing Gear Mounting Figure 1!! 6=E IFHE C 4A L= 1 IJ= =JE Refer to Figure 2. 1 Shore the tail as per Chapter Remove the tail cone access panel as per Chapter Remove the tail spring attachment bolts (1-3). 4 Remove the tail spring (4). 5 Reverse procedure for installation; consider to fasten the breather line using the MS21919-DG12 clamp (5). PAGE DATE: 1. June 1995 PAGE 5

6 MAINTENANCE PRACTICES! " 6=E 9DAA. H )IIA > O,EI=IIA > O )IIA > O Refer to Figure 2. 1 Shore the tail as per Chapter Remove the attachment bolt, washers and stopnut (6). 3 Disassemble the special washers (7), bearings (8), and the tail wheel fork (9). 4 Reverse procedure for assembly.! # 6=E 9DAA,EI=IIA > O )IIA > O Refer to Figure Shore the tail as per Chapter Remove the attachment bolt, washers, and stopnut (10). 3 Remove the tailwheel. 4 Disassemble the bearings (11), the wheel halves (12), the spacer sleeve (13), and the solid ruber tire (14). 5 Reverse procedure for assembly. PAGE DATE: 1. June 1995 PAGE 6

7 MAINTENANCE PRACTICES Note: From Serial N 21 the tail spring consist of a composite part and a steel shoe connected by two bolts. Tail Wheel, Fork and Spring Figure 2 PAGE DATE: 1. June PAGE 7

8 ! " ),*4) -5! " /A AH= This Chapter provides maintenance personnel with necessary procedures to accomplish both on-aircraft and offaircraft maintenance of Cleveland design wheel and brake assemblies. Such maintenance shall include inspection, removal, servicing, refinishing, and installation of assemblies. The main wheels have standard brand 500x5 rims, six-ply rated tyres with tubes, according to FAA Standard TSO-C62. Cleveland wheels with brake assemblies are used. The main wheels are covered with glas fibre designed fairings of which Figure 3 shows the layer sequence. The tailwheel consists of a 5 inch tire and an aluminium rim. The Cleveland design features an external brake in which the disc is external to the wheel with the brake caliper floating over the disc. The brake system (refer to figure 4) consists of a brake assembly located at the inner side of the wheel, a master cylinder (1) at the front and rear rudder pedals each, and a brake fluid reservoir (2) mounted at the engine side of the firewall. The master cylinders are mounted in line, so that the front cylinder looses his efficasy, when the rear cylinder has been actuated. The particular parts of the brake system are interconnected by brake lines consisting of aluminium tubes and flexible hoses (In Figure 4 details are only outlined, for accurate identification of parts refer to Fig. 5. The capital letters in Fig. 5 refer to the marks in Fig. 4). However from Serial No. 47 the brake lines in the cockpit area are replaced by a KNAPP hose system. The tail wheel has no brake ) 6 PAGE DATE: June December AIJ>H= AI=BJAH =E J=E E CJDA>H= AIOIJA )?JK =JA@>H= AIID= CMEJDA CE A HK K C=J &HF =NE K FH FA AH= C A B =JJ=? 9EJD=FF EA@>H= MAHIAJJE C=> LA &HF JDAMDAA I =OI E@A CH=II PAGE 8

9 WHEELS AND BRAKES General 6-. HBKHJDAHE B H =JE??AH E C =E MDAA >H= AIHABAHJ + ALA AI =E JA =?A = K= Layer Sequence Wheel Fairing, up to Ser. No. 49 Figure 3, Sheet 1 PAGE DATE: June December PAGE 9

10 WHEELS AND BRAKES General Brake System Figure 4 PAGE DATE: 1. June 1995 PAGE 10

11 WHEELS AND BRAKES General Brake assembly to rear fitting shackle connection (A) Rear fitting shackle to rear pedal bottom port connection (B) Rear pedal top port to rear fitting shackle connection (C).EJJE 1 AEROQUIP 816-4D PN: PC AN816-4D PN: PC AN818-4D PN: PC AN819-4D PN: PC AN822-4D PN: PC AN823-4D PN: PC AN832-4D PN: PC AN833-4D PN: PC AN834-4D PN: PC AN837-4D PN: PC AN924-4D PN: PC AN960-C716 PN: PC IAI 2 0 AEROQUIP PN: PC K>AI 30 alu tube , Ø1/4 inch PN: PC Rear fitting shackle to front fitting shackle connection (D) Brake Lines Figure 5, Sheet 1 PAGE DATE: 1. June 1995 PAGE 11

12 WHEELS AND BRAKES General Front fitting shackle to front pedal bottom port connection (E) Front pedal top port to center fitting shackle connection (F) Center fitting shackle to firewall connection (G).EJJE 1 AEROQUIP 816-4D PN: PC AN816-4D PN: PC AN818-4D PN: PC AN819-4D PN: PC AN822-4D PN: PC AN823-4D PN: PC AN832-4D PN: PC AN833-4D PN: PC AN834-4D PN: PC AN837-4D PN: PC AN924-4D PN: PC AN960-C716 PN: PC IAI 2 0 AEROQUIP PN: PC K>AI 30 alu tube , Ø1/4 inch PN: PC Firewall to single brake fluid reservoir connection (H) Brake Lines Figure 5, Sheet 2 PAGE DATE: 1. June 1995 PAGE 12

13 WHEELS AND BRAKES! " )1 6- ) +-24) ! " =IJAH+O 4A L= 1 IJ= =JE 1 Drain the brake system. 2 Disconnect the fuel lines. 3 Fix the master cylinder spring using a mounting aid as shown in Figure 6 (Cleveland master cylinder only). 4 Remove the attachment bolts. 5 Remove the master cylinder. 7 Remove mounting aid (Cleveland only). 6 Install in reverse sequence of removal. Master Cylinder Mounting Aid Figure 6 PAGE DATE: June December PAGE 13

14 WHEELS AND BRAKES General Layer Sequence Wheel Fairing from Ser. No. 50 Figure 3, Sheet 2 PAGE DATE: June December PAGE 9A 14