TM 9-2320-361-20 7-19. REAR SPRING SEAT REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: APPLICABLE MODELS REFERENCES (TM) All LO 9-2320-209-12-1 MATERIALS/PARTS Twelve lockwashers Gasket Washer Seal Felt seal WoodrufT key Two bushing assemblies GAA grease (Appendix C, Item 13) Rags (Appendix C, Item 21) TM 9-2320-361-10 TM 9-2320-361-20P EQUIPMENT CONDITION Parking brake set (TM 9-2320-261-10). Forward-rear and rear-rear axle wheels removed (para. 9-2). GENERAL SAFETY INSTRUCTIONS Ensure vehicle is firmly supported. WARNING 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. Ensure vehicle is firmly supported while spring seat is removed. Injury to personnel can result. NOTE Right and left spring seats are replaced the same way. This procedure covers the left side. Support vehicle with two jack stands (5) at tandem axle bracket (4). Raise axles (7) so that spring (1) is not resting against brackets (6). Remove two screws (9) and lockwashers (10) from spring seat (23). Discard lockwashers (10). Remove four nuts (12), lockwashers (11), two U-bolts (2), and saddle (3) from spring (1). Discard lockwashers (11). Raise and support rear-rear axle (7) until spring (1) is lifted offspring seat (23). Readjust jack stands (8) under axle (7). Remove six screws (19), lockwashers (20), pack cover (21), and gasket (22) from spring seat (23). Discard lockwashers (20) and gasket (22). Straighten washer (17) tabs. Remove nut (18), washer (17), nut (16), outer bushing (15), and spring seat (23) from tandem axle bracket (4) end. Discard washer (17). Remove two bushing cups (14) and (28) from spring seat (23). Discard bushing cups (14) and (28). Remove plug (13) from spring seat (23). Remove inner bushing (29), seal (27), retainer (26), felt seal (25), washer (24), and woodruff key (30) from tandem axle bracket (4) end. Do not bend washer (24) or retainer (26). Discard seal (27), felt seal (25), and woodruff key (30). b. Installation I 1. Position new felt seal (25) on retainer (26). 2. Install two new bushing cups (14) and (28) in spring seat (23). 3. Apply a film of GAA grease to tandem axle bracket (4) end, new seal (27), spring seat (23), and inner bushing (29). 7-44