TM 9-2320-272-24-3
THIS TASK COVERS:
b. Installation
a. Removal
INITIAL SETUP:
REFERENCES (TM)
APPLICABLE MODELS
LO 9-2320-272-12
M936/A1/A2
TM 9-2320-272-10
TOOLS
TM 9-2320-272-24P
General mechanic's tool kit (Appendix E, Item 1)
EQUIPMENT CONDITION
Torque wrench (Appendix E, Item 145)
Parking brake set (TM 9-2320-272-10)
Lifting device
Boom floodlight wire removed (para. 3-385).
Chains
Hydraulic oil reservoir drained (para. 4-188).
MATERIALS/PARTS
Hoist winch removed (para. 4-192).
Locknut (Appendix D, Item 285)
GENERAL SAFETY INSTRUCTIONS
Two lockwashers (Appendix D, Item 350)
All personnel must stand clear during hoisting
Cap and plug set (Appendix C, Item 14)
operations.
Ensure inner boom is secured to outer boom before
hoisting.
WARNING
All personnel must stand clear during hoisting operations. A snapped
cable, or shifting or swinging load, may cause injury to personnel.
CAUTION
When disconnecting hydraulic lines and hoses, plug all openings to
prevent dirt from entering and causing internal damage to parts.
NOTE
Have drainage container ready to catch oil.
Tag hoses for installation.
Disconnect cylinder extension hose (5) and retracting hose (4) from two boom adapter elbows (3).
1.
Secure inner boom (1) to outer boom (2) with utility chain to prevent inner boom (1) movement
2.
during hoisting operation.
3.
Attach two utility chains to outer boom (2).
Raise outer boom (2) until weight of boom (2) is fully supported and elevating cylinder retaining
4.
pins (16) are free.
Remove two screws (14), lockwashers (15), and retaining pins (16) from outer boom (2) and two
5.
elevating cylinders (13). Discard lockwashers (15).
WARNING
Before hoisting outer boom away from wrecker, ensure inner boom
is properly secured to outer boom as outlined in step 2 to prevent
injury to personnel.
6.
Remove grease fittings (6) and (12) from pivot pin (7).
Remove locknut (11), pivot pin (7), two sleeve bearings (9), and crane sheave (10) from turntable (8).
7.
Discard locknut (11).
4-912
