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Page Title:
VALVE TAPPETS MAINTENANCE - continued |
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 TM 9-2320-361-24-1
0034 00
VALVE TAPPETS MAINTENANCE (Contd)
REMOVAL
WARNING
Skysol 100 solvent is combustible; DO NOT use or store near heat,
sparks, flame, or other ignition sources. Use mechanical
ventilation whenever product is used in a confined space, heated
above ambient temperatures, or agitated. Keep container sealed
when not in use.
Contact with Skysol 100 may cause skin irritation. Use chemical-
resistant gloves. In case of skin contact, remove any contaminated
clothing and wash skin thoroughly with soap and water. Wash
contaminated clothing before reuse. Eye contact may cause
irritation, tearing, or blurring of vision. Use face shield or goggles
when eye contact may occur. In case of eye contact, flush eyes with
large amounts of water for at least 15 minutes or until irritation
subsides. Inhalation may cause irritation to upper respiratory
passages. DO NOT have food or drink in the vicinity. Failure to
comply may result in injury to personnel.
CAUTION
Camshaft and tappets are a matched set. All tappets removed
must be tagged for installation. Failure to do this may result in
damage to tappets or camshaft.
NOTE
Sludge from engine oil may build upon external surfaces of
tappets. When this condition exists, Skysol 100 solvent maybe
applied to tappets while working tappets up and down to loosen
sludge and aid removal.
Remove and tag twelve tappets (2) from tappet bores (1) in engine block (3).
CLEANING AND INSPECTION
1.
For general cleaning instructions, refer to WP 0021 00.
NOTE
Normal tappet and camshaft lobe wear is indicated by a slight
inward coning or dishing effect of the cam contact surface on
tappets.
2.
Inspect tappets (2) for coned, scored, or grooved cam contact. Minor surface coning is acceptable when
cam contact surface is free of grooving and scoring, otherwise replace.
3.
Inspect machined sides of twelve tappets (2) for grooving or scoring. Replace if defective.
4.
If tappets (2) need replacement, inspect twelve tappet bores (1) and lobe surfaces of camshaft.
Refer to TM 9-2815-210-34-2-2 for inspection.
INSTALLATION
CAUTION
Tappets exterior must be coated with new engine oil prior to
installation. This provides for initial lubrication when engine is
started. Failure to oil tappets may result in damage to tappet
bores, tappets, or camshaft lobes.
1.
Coat twelve tappets (2) with new engine oil.
2.
Install and seat twelve tappets (2) in tappet bores (1) of engine block (3).
3.
Install rocker arms and pushrods (WP 0031 00).
4.
Install tappet chamber cover (WP 0033 00).
0034 00-2
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