TM 9-2320-260-34
16-34. CRANE SHIPPER, BOOM, BOOM EXTENSION, AND ROLLERS
MAINTENANCE (M819)
THIS TASK COVERS:
Repair
k.
a. Shipper Removal
l.
Upper Roller Assembly and Adjustment
b. Boom Extension Removal
Middle Lower Roller Assembly
m.
c. Boom Removal
Front Lower Roller Assembly and Adjustment
n.
d. Extension Cylinder Removal
Boom Extension Assembly
o.
e. Upper Roller Removal
Upper Roller Installation
f. Boom Extension Disassembly
P.
Extension Cylinder Installation
g. Front Lower Roller Disassembly
q.
r.
Boom Installation
h. Middle Lower Roller Disassembly
Boom Extension Installation
s.
i. Upper Roller Disassembly
Shipper Installation
t.
j. Cleaning and Inspection
MATERIALS/PARTS (Contd)
APPLICABLE MODELS
Shims (Appendix D, Item 490)
M819
Cap and plug set (Appendix C, Item 6)
TOOLS
Antiseize tape (Appendix C, Item 50)
General mechanic's tool kit
PERSONNEL REQUIRED
(Appendix B, Item 1)
Two
1-5/8-in. open-end wrench
REFERENCES (TM)
1-11/16-in. open-end wrench
LO 9-2320-260-12
TM 9-237
14-in. pipe wrench (Appendix B, Item 129)
TM 9-2320-260-10
Mechanical puller kit (Appendix B, Item .14)
TM 9-2320-260-20
Arbor press (Appendix B, Item 7)
TM 9-2320-260-34P-2
Lifting device
Two chains
EQUIPMENT CONDITION
Spreader bar
Spare tire removed (TM 9-2320-260-10).
A-frame
. Floodlight and wiring harness removed
Jack stand
(TM 9-2320-260-20).
MATERIALS/PARTS
Crane cab (Gondola) removed (para. 16-29).
Locking Plate (Appendix D, Item 165)
Cable hoist winch and hoses removed
Four cotter pins (Appendix D, Item 18)
Six lockwashers (Appendix D, Item 218)
GENERAL SAFETY INSTRUCTIONS
Nine lockwashers (Appendix D, Item 219)
All personnel must stand clear during lifting
Eight lockwashers (Appendix D, Item 211)
instructions.
Shims (Appendix D, Item 492)
Ensure lifting capacity is greater than weight of
Shims (Appendix D, Item 494)
shipper.
Shims (Appendix D, Item 489)
1. Attach chain to holdboom (1) and boom extension (4) to shipper (2) during removal.
2. Attach chain to shipper (2) and lifting device and take up slack in chain.
3. Disconnect boom supports (3) from shipper (2) (TM 9-2320-260-10).
NOTE
Assistant will help with steps 4 through 18.
4. Lift shipper (2) to provide clearance to remove lift cylinder pivot pin (9).
16-194
