TM 9-2320-361-34 I 13-4. FIFTH WHEEL MAINTENANCE THIS TASK COVERS: a. Disassembly c. Assembly b. Cleaning and Inspection INITIAL SETUP APPLICABLE MODELS M275A2 TOOLS General mechanic’s tool kit (Appendix B, Item 1) Torque wrench, 3/4-in. dr. (Appendix B, Item 6) Caliper, vernier (Appendix B, Item 9) Lifting device Four washers (Appendix F, Item 268) Two screws (Appendix F, Item 212) Two locknuts (Appendix F, Item 99) MATERIALS/PARTS Cotter pin (Appendix F, Item 3) Cotter pin (Appendix F, Item 5) Two locknuts (Appendix F, Item 96) Locknut (Appendix F, Item 97) Locknut (Appendix F, Item 98) Two lockwashers (Appendix F, Item 126) Lockwasher (Appendix F, Item 127) Safety wire (Appendix C, Item 30) PERSONNEL REQUIRED Two REFERENCES (TM) LO 9-2320-209-12-1 TM 9-2320-361-34P EQUIPMENT CONDITION Fifth wheel removed (TM 9-2320-361-20). GENERAL SAFETY INSTRUCTIONS . All personnel must stand clear during lifting operations. . Eye protection must be worn when removing or installing springs under tension. ● Personnel must stand clear during release of plunger rack. I a. Disassembly 1. Attach chain to fifth wheel housing (1) with four washers (2), two screws (5), and locknuts (3). 2. Attach lifting device to chain. Apply tension to chain. 3. Remove two lubrication fittings (4) from fifth wheel housing (1). CAUTION Do not use heat to remove pivot pins from fifth wheel housing. Damage to equipment will result. 4. Remove two retaining pins (7) and pivot pins (8) from fifth wheel housing (1) and base (6). WARNING All personnel must stand clear during lifting operations. A swinging or shifting load may cause injury or death to personnel. 5. Remove fifth wheel housing (1) from base (6). ● ● 6. Position fifth NOTE Assistant will help with step 6. Fifth wheel housing must be 6 in. (15.2 cm) above workbench for bushing removal. wheel housing (1) on workbench with trailer mating surface (9) side down. 13-12