TM 5-3895-370-14&P5-68. CAMSHAFT REPLACEMENT/REPAIR (CONT).(7)Place a trough through camshaft bore andremove banded wooden dowels in cylinderhead.NOTE·Only remove one tappet at a timeinto trough. If more than one isremoved, a tappet could fall intooil pan.·If engine is upside down in standand oil pan removed, tappets canbe removed from bottom ofengine block without usingtrough.(8)Remove 12 valve tappets (7) into trough.b. Cleaning/lnspection.(1)Remove all rough spots on camshaft with emery cloth and calibration fluid.WARNING·Drycleaning solvent (P-D-680) is TOXIC and flammable. Wear protectivegoggles and gloves; use only in a well-ventilated area; avoid contact with skin,eyes, and clothes and do not breathe vapors. Keep away from heat or flame.Never smoke when using solvent; the flash point for type I drycleaning solventis 100°F (38°C) and for type II is 140°F (60°C). Failure to do so may result ininjury or death to personnel. P-D-680 type III is a substitute for types I and II inthis application. The flash point for type III is 200°F (93°C).·If personnel become dizzy while using cleaning solvent, immediately get freshair and medical help. If solvent contacts skin or clothes, flush with cold water.If solvent contacts eyes, immediately flush eyes with water and get immediatemedical attention.(2)Clean gear, camshaft, and valve tappets with drycleaning solvent and dry with lint-free cloth.(3)Inspect camshaft for scoring, cracks, and warping.(4)Inspect gear teeth for pitting, cracks, and warping.(5)Inspect socket, stem, and face of valve tappet for pitting, cracks, and excessive wear.5-288
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