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TM 5-2420-222-34
3-14.
TAPPET REPLACEMENT.
This Task Covers:
a.
Removal
c.
Installation
b.
Cleaning and Inspection
Initial Setup:
Equipment Conditions:
Materials/Parts:
•
Cylinder head removed (see paragraph 3-6).
•
Engine oil (Item 25, Appendix B)
•
Dry cleaning solvent (Item 31, Appendix B)
Tools/Test Equipment:
•
Marker tags (Item 32, Appendix B)
•
Nonelectrical wire (Item 44, Appendix B)
•
General mechanic's tool kit
•
Field automotive shop set
General Safety Instructions:
•
Dry cleaning solvent is flammable and must not be used near open flame. Use only in a well-ventilated area.
•
Compressed air used for cleaning purposes should never exceed 30 psi (207 kPa).
a.
REMOVAL
CAUTION
Tappets must be Installed in same bore from which they are removed. Improper
Installation may damage parts.
Using magnetic retrieving tool, remove eight tappets (2) from engine block (1) and camshaft (3).
b.
CLEANING AND INSPECTION
WARNING
•
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective
goggles and gloves, and use only In a well-ventilated area. Avoid contact with
skin, eyes, and clothes, and DO NOT breathe vapors. DO NOT use near open
flame or excessive heat. The solvent's flash point is 100°F-138°F (38°C-59°C).
If you become dizzy while using cleaning solvent, Immediately get fresh air and
medical help. If solvent contacts eyes, Immediately wash your eyes and get
medical aid.
•
Compressed air used for cleaning or drying purposes, or for clearing
restrictions, should never exceed 30 psi (207 kPa). Wear protective clothing
(goggles/shield, gloves, etc.) and use caution to avoid injury to personnel.
1.
Clean tappets in dry cleaning solvent and dry with compressed air.
2.
Inspect tappets for cracks, bends, breaks, and excessive wear. Replace defective parts.
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