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TM 5-2420-222-34
3-19. CONTROL CAMS, GEARS, AND BUSHINGS REPLACEMENT.
This Task Covers:
a.
Removal
d.
Assembly
b.
Disassembly
e.
Installation
c. Cleaning and Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Engine oil pan removed (see paragraph 3-20).
•
Engine oil (Item 25, Appendix B)
•
Lower idler spur gear removed (see paragraph 3-15).
•
Rags (Item 28, Appendix B)
•
Dry cleaning solvent (Item 31,
Appendix B)
Tools/Test Equipment:
•
One jamnut
•
General mechanic's tool kit
•
Two lockwashers
•
Field automotive shop set
•
Bearing remover and installer
General Safety Instructions:
•
Timing alignment tool
•
Dry cleaning solvent is flammable
and must not be used near open
flame. Use only in a well-
ventilated area.
NOTE
Loader backhoe engine has two control cams. Maintenance is the same for both,
except where noted. Right control cam Is shown. Repeat procedure for left control
cam as required.
a.
REMOVAL
NOTE
Perform step 1 only when removing left control cam.
1.
Remove Jamnut (4) and engine oil pump spur gear (3) from engine oil pump drive shaft (2). Discard jamnut.
2.
Pry control cam spur gear (8) away from thrust plate (5) as far as possible.
3.
Using dial Indicator, measure end play of control cam spur gear (8). End play must be 0.0020-0.0230 In. (0.0508-
0.5842 mm).
4.
Remove two screws (7) and lockwashers (6) from thrust plate (5) and engine block (1). Slide thrust plate out of
engine block. Discard lockwashers.
5.
Pull control cam spur gear (8) and control cam (9) out of engine block (1).
3-110
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