TM-9-2350-311-20-2 Maintenance Manual Volume 2 for M109 Cab Download
Page 560 of 828
TM 9–2350–311–20–2 13–4 Change 2 13–1 COMMANDER’S SEAT AND SUPPORT POST GROUP — CONTINUED b. Disassembly 1 Remove two permanent washers (17) and headless shoulder pin (18) from brackets (19) on seat (9) and backrest (10). 2 Withdraw quick-release pin (20), remove chain (20.1) and s-hook (20.2) from brackets (19) on seat (9) and backrest (10). 3 Separate backrest (10) from seat (9). 4 Remove four machine screws (21), four lockwashers (22), two rollers (23), and nut and bolt retainers (24) from seat carriage (8). Discard lockwashers. 5 Remove permanent washer (25), headless shoulder pin (26), and two rollers (27) from seat carriage (8). Discard permanent washer. 6 Remove x-washer (27.1) and headed grooved pin (28) from manual control handle (16) on seat carriage (8). 7 Remove headless grooved pin (29) from rod end clevis (30) on seat carriage (8). This will release flat wash- er (31), spring (32), and sleeve bushing (33). 8 Remove headed grooved pin (34) and x-washer (35) from rod end clevis (30) to release manual control han- dle (16). c. Assembly 1 Install rod end clevis (30) on manual control handle (16) using headed grooved pin (34) and x-washer (35). 2 Install sleeve bushing (33), spring (32), and flat washer (31) on rod end clevis (30). Install rod end clevis on seat carriage (8) using headless grooved pin (29). 3 Install headed grooved pin (28) and x-washer (27.1) on manual control handle (16). 4 Install headless shoulder pin (26), two rollers (27), and new permanent washer (25) on seat carriage (8). 5 Using four machine screws (21), four new lockwashers (22), and nut and bolt retainers (24), install two roll- ers (23) on seat carriage (8). 6 Install backrest (10) on seat (9) using quick-release pin (20), chain (20.1) and s-hook (20.2). 7 Install headless shoulder pin (18) and two permanent washers (17) on brackets (19).