|
| |
TM 5-2420-222-34
3-17.
CAMSHAFT MAINTENANCE (Con’t).
NOTE
If camshaft needs replacing, tappets must also be replaced.
3.
Inspect camshaft for scoring and excessive wear. Using micrometer caliper set, measure diameter of camshaft
journals. Diameter must be 2.1987-2.2007 in. (55.8470-55.8978 mm).
4.
Using vernier caliper, measure thickness of thrust plate. Thickness must be 0.1510-0.1580 in. (3.8354-4.0132
mm). If end play measurement taken in step 1 of removal or thickness measurement taken in this step are not
within specifications, replace thrust plate.
5.
Inspect helical gear for nicks, burrs, and damaged teeth. Remove burrs with sharpening stone. If gear is nicked
or teeth are damaged, replace.
e.
ASSEMBLY
1.
Tap woodruff key (8) in position in camshaft (3).
2.
Support camshaft (3) with a wood block under forward journal. With the aid of an assistant, use a wood block and
ball-peen hammer to tap on helical gear (4) until seated against camshaft flange.
NOTE
Perform step 3 only if tachometer shaft was removed.
3.
Using remover and installer and arbor press, press tachometer shaft (7) in camshaft (3). Ensure that slot faces
opposite direction of woodruff key (8).
3-101
|
