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TM 9-4940-568-34
7-52
This task covers:
a. Removal
b. Cleaning/Inspection
c. Pitting Reuse and Edge Deterioration (Breakdown) Criteria
d. Camshaft Bore Inspection
e. Installation
f. Follow-On Maintenance
INITIAL SETUP
Equipment Condition
Engine installed on stand, (Para 7-2)
Rocker arms removed, (TM 9-4940-568-20)
Drive belt removed, (TM 9-4940-568-20)
Front gear cover removed, (Para 5-14)
Fuel pump removed, (TM 9-4940-568-20)
Tools and Special Tools
Tool Kit, General Mechanic’s (Item 67, Appendix F)
Camshaft Bushing Tool (Item 1, Appendix F)
Compressor Unit, Air (Item 10, Appendix F)
Gage Set, Telescoping (Item 22, Appendix F)
Gloves, Chemical Oil Protective
(Item 23, Appendix F)
Goggles, Industrial (Item 25, Appendix F)
Gun, Air Blow (Item 29, Appendix F)
Micrometer, Outside, Caliper, Set
(Item 37, Appendix F)
Tappet Kit (Item 62, Appendex F)
Tool, Engine Turnover (Item 66, Appendix F)
Dowel, Wooden (Appendix C)
7-7. CAMSHAFT AND VALVE TAPPETS REPLACEMENT.
Materials/Parts
Grease, Lithium (Item 13, Appendix B)
Oil, Lubricating (Item 17, Appendix B)
a.
Removal.
(1)
Insert two dowels (1) through the push rod
holes and into the top of each tappet (2)
securely.
NOTE
When properly installed, the
dowels can each be used to pull
the tappets up and should not be
able to be pulled out without
considerable effort.
(2)
Pull two tappets (2) up and wrap a rubber
band around the top of two dowel rods (1).
This will prevent the tappets from dropping
down.
(3)
Repeat Step (1) and (2) for remaining six
tappets.
