TM 9-2350-256-20
CHAPTER 9:
MAINTENANCE OF HULL- AND CAB-RELATED COMPONENTS
9-44 REPLACE/SERVICE BOOM SUPPORT AND RELATED PARTS
THIS TASK COVERS
a. Removal
b. Installation
c. Adjustment
INITIAL SET-UP
Tools:
Parts:
Equipment Condition:
• Tool kit, general mechanic’s
• Lockwashers (8) (Appendix G,
Hoisting boom raised (refer to
(Appendix, C, item 53)
item 134)
TM 9-2350-256-10)
• Wrench, torque (Appendix C,
• Pins, cotter (6) (Appendix G,
item 61)
item 216)
• Pin, cotter (Appendix G,
item 220)
a. REMOVAL
1
Remove support latch (1) and spring (2) by removing cotter pin (3), washer (4), and straight pin (5).
2
Remove latch adjusting screw (6) and nut (7).
3
Remove three latches (8) and three springs (9) by removing six cotter pins (10) and three straight pins (11)
4
Remove boom support (12) by removing 8 screws (13), 8 lockwashers (14), and 16 flat washers (15).
b. INSTALLATION
1
Install boom support (12) with 16 flat washers (15), 8 new lockwashers (14, and 8 screws (13). Torque screws
to 70-75 pound-feet (lb-ft) (95-102 newton-meters [N•m] ).
2
Install three springs (9) and three latches (8) with three straight pins (11) and six new cotter pins (10).
3
Install latch adjusting screw (6) and nut (7).
4
Install spring (2) and support latch (1) with washer (4), straight pin (5), and new cotter pin (3).
9-74
