TM 9-2320-260-34
16-34. CRANE SHIPPER, BOOM, BOOM EXTENSION, AND ROLLERS
MAINTENANCE (M819) (Contd)
h. Middle Lower Roller Disassembly
NOTE
q This procedure can be performed on-vehicle by rocking boom
toward upper roller. Weigh down end of boom.
q Mark holes on plate and shipper from which screw is removed.
1. Remove screw (21) and lockwasher (22) from plate (23) on roller shaft (25) and shipper (14). Discard
lockwasher (22).
NOTE
Assistant will help with step 2.
2, Remove roller shaft (25) and roller (24) from shipper (14).
3. Remove grease fitting (26) from roller shaft (25).
i. Upper Roller Disassembly
NOTE
Upper roller assembly must be removed from shipper (subtask e.)
before disassembly,
1. Remove two grease fittings (35) from caps (27).
2. Remove eight screws (34), lockwashers (33), two caps (27), and shims (28) from housing (29). Discard
shims (28) and lockwashers (33).
3. Remove two rollers (30) and shaft (32) from housing (29).
4. Remove two rollers (30) and spacer plates (31) from shaft (32).
16-201
