Remove all rough spots on camshaft with emery cloth and test oil.
Drycleaning solvent (P-D-680) is TOXIC and flammable. Wear protective goggles and gloves; use
only in 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 flashpoint for type I
drycleaning solvent is 100°F (38°C) and for type II is 140°F (60°C). Failure to do so may result in
injury or death to personnel.
If personnel become dizzy while using cleaning solvent, immediately get fresh air and medical help.
If solvent contacts skin or clothes, flush with cold water. If solvent contacts eyes, immediately flush
eyes with water and get immediate medical attention.
Clean gear, camshaft, and valve tappets with drycleaning solvent and dry with lint-free cloth.
Inspect camshaft for scoring, cracks, and warping.
Inspect gear teeth for pitting, cracks, and warping.
Inspect socket, stem, and face of valve tappet for pitting, cracks, and excessive wear.
(6) Measure camshaft valve lobes at position B.
If measurements are less than minimum,
replace camshaft. Minimum limits are
Intake lobes are 1.852 in. (47.040 mm).
Lift pump lobe is 1.398 in. (35.5 mm).
Measure camshaft journals at position C.
Minimum limit is 2.1245 in. (53.962 mm).
If measurement is less than minimum,