TM 9-2320-269-34-2
16-30. BOOM SWING MECHANISM REPLACEMENT (M819)
THIS TASK COVERS:
b. Installation
a. Removal
REFERENCES (TM)
APPLICABLE MODELS
LO 9-2320-260-12
M819
TM 9-2320-260-10
TOOLS
TM 9-2320-260-34P-2
General mechanic's tool kit
EQUIPMENT CONDITION
(Appendix B, Item 1)
Parking brake set (TM 9-2320-260-10).
1-1/8 in. open-end wrench
Drain gear oil from boom swing mechanism
(LO 9-2320-260-12).
1-11/16 in. open-end wrench
GENERAL SAFETY INSTRUCTIONS
Lifting device
All personnel must stand clear during lifting
Chains
operations.
MATERIALS/PARTS
Ensure lifting capacity is greater than weight of
Gasket (Appendix D, Item 59)
swing mechanism.
Six lockwashers (Appendix D, Item 215)
Woodruff key (Appendix D, Item 546)
Cap and plug set (Appendix C, Item 6)
Antiseize tape (Appendix C, Item 50)
a. Removal
Clean area around hoses and lines before removal to prevent
entry of dirt. Damage will occur if dirt or dust enters system.
Cap or plug all openings immediately after disconnecting lines
and hoses to prevent contamination. Remove caps or plugs
before installation. Failure to do so may result in hydraulic
system damage.
NOTE
Have drainage container ready to catch oil.
Tag hoses for installation.
Mark positions of h hydraulic motor fittings for installation.
1.
Loosen swivel nuts (5) and (7) and disconnect hoses (10) and (12) from adapter elbows (4) and (6).
2.
Loosen swivel nut (9) on angle adapter (8) and disconnect drain hose (11) from angle adapter (8).
Remove six screws (15) and Iockwashers (14) from flange of boom swing mechanism (13). Discard
3.
lockwashers (14).
4.
Remove hydraulic motor (3) and coupling (1) from boom swing mechanism (13).
Remove coupling (1) and woodruff key (2) from shaft of hydraulic motor (3) and boom swing
5.
mechanism (13). Discard woodruff key (2).
6.
Remove three nuts (18) from studs (17) on housing (16).
Attach chains to boom swing mechanism (13) and lifting device.
7.
WARNING
All personnel must stand clear during lifting operations,
A swinging or shifting load may cause injury to personnel,
Ensure lifting capacity is greater than weight of boom swing
mechanism. Failure to do so may result in injury to personnel
or damage to equipment.
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