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TM 5-2420-222-34
8-9.
DIFFERENTIAL LOCK MECHANISM MAINTENANCE.
This Task Covers:
a.
Removal
c.
Repair
b.
Cleaning and Inspection
d.
Installation
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Differential lock pedal and linkage removed (see
•
Rags (Item 28, Appendix B)
paragraph 8-8).
•
Dry cleaning solvent (Item 31, Appendix B)
•
Left rear axle housing removed (see paragraph 9-3).
•
One preformed packing
Tools/Test Equipment:
Personnel Required: Two
•
General mechanics tool kit
General Safety Instructions:
•
Field automotive shop set
•
Dry cleaning solvent is flammable and must not be
used near open flame. Use only in a well-ventilated
area.
a.
REMOVAL
1.
Loosen screw (11) in arm (10).
2.
Using hammer and drift, drive shaft (3) rearward until clear of arm (10). Remove arm and key (12) from shaft and
transmission (1).
3.
Remove plug (4) from shaft (3) and transmission (1).
4.
While assistant supports shaft (3), drive shaft rearward until key (5) can be removed from shaft.
5.
While assistant supports collar (9), shifter fork (7), and spring (6), pull shaft (3) out of transmission (1), spring, and
shifter fork.
6.
Remove preformed packing (2) from shaft (3). Discard preformed packing.
7.
Remove shifter fork (7) with assembled parts from transmission (1).
8.
Remove two shoes (8) and spring (6) from shifter fork (7).
b.
CLEANING AND INSPECTION
WARNING
Dry cleaning solvent, P-D-680, Is toxic and flammable. Always wear protective
goggles and gloves, and use only In a well-ventilated area. Avoid contact with
skin, eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open flame
or excessive heat. The solvent's flash point Is 100°F-138°F (38°C-59°C). If you
become dizzy while using cleaning solvent, immediately get fresh air and medical
help. If solvent contacts eyes, Immediately wash your eyes and get medical aid.
1.
Clean all metal parts with dry cleaning solvent. Dry thoroughly with clean, dry rags.
8-44
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