TM 9-2320-272-24-3
9.
Install extension cylinder (para. 4-196).
10.
Install inner boom (para. 4-195).
11.
Install hoist winch (para. 4-192).
NOTE
Vertical adjustment can be performed with boom assembly either
installed or removed from wrecker body.
1.
Remove sixteen screws (21) and lockwashers (22) connecting four mounting caps (23) to lower boom
roller assembly (20) and upper boom roller assembly (19). Discard lockwashers (22).
2.
Turn two mounting caps (23) so top edge of inner boom (9) and top edge of outer boom (14) are
approximately parallel.
3.
Install two mounting caps (23) on lower boom roller assembly (20) with eight new lockwashers (22)
and screws (21).
4.
Manually extend and retract inner boom (9) to verify that lower edge clears outer boom (14).
NOTE
Perform steps 5 and 6 only if inner boom catches on upper boom
roller assembly after adjustment is checked.
5.
Remove eight screws (21) and lockwashers (22) from two mounting caps (23) and upper roller
assembly (19) and turn mounting caps (23) one additional screw hole. Discard lockwashers (22).
6.
Install two mounting caps (23) on upper roller (19) with eight new lockwashers (22) and screws (21).
FOLLOW-ON TASK: Lubricate inner and outer booms (LO 9-2320-272-12).
4-953
