TM 10-4320-307-24
4-15
CAMSHAFT ASSEMBLY INSPECT/REPAIR/REPLACE.
This task covers: a.
Inspection
b.
Removal
c.
Cleaning/Inspection
d.
Disassembly e.
Assembly
f.
Installation
INITIAL SETUP
Tools
Equipment
Tool kit, general mechanic's (Item 1, Appendix B)
Condition
Dial indicator (Item 3, Appendix B)
Reference
Condition Description
Camshaft installation, pilots (Item 44, Appendix B)
Paragraph
Gear cover assembly
Outside micrometer (Item 36, Appendix B)
4-14
removed
Inside micrometer (Item 4, Appendix B)
Paragraph
Cam followers removed
Gear puller
3-34
V-blocks (Item 3, Appendix B)
General Safety Instructions
Oven
Materials/Parts
Well ventilated area for cleaning operations
Dry cleaning solvent P-D-680 (Item 30, Appendix C)
Grease (Item 16, Appendix C)
Crocus abrasive cloth (Item 1, Appendix C)
Rubber bands
INSPECTION:
1
Check camshaft gear backlash as follows:
a.
Attach dial indicator (1) to guide stud (2)
screwed into engine block.
b.
Rotate camshaft gear (3) as far clockwise as it
will move by hand and hold in place.
NOTE
Crankshaft gear (4) must not move.
c.
Position indicator probe (5) to camshaft gear
(3) tooth and set indicator (1) to zero.
d.
Rotate camshaft gear (3) counterclockwise and
read dial indicator (1) when rotation stops.
e.
If backlash is more than 0.020 inch (0.51 mm),
camshaft gear (3) must be replaced.
4-106
