TM 5-3825-229-14&P
6-13. CAMSHAFT (cont)
a.
Removal (cont).
(6)
Place camshaft and camshaft gear in a press. Press camshaft (6) out of gear (1). Remove retainer (4).
Remove key (5) from camshaft (6).
b.
Inspection.
(1)
Clean camshaft, retainer and gear.
(2)
Visually inspect camshaft lobes and bearing journals for roughness, scoring or wear. Check lobes and
bearings for wear with a micrometer.
Checking Camshaft Lobes and Bearing Journals
(a) Diameter of bearing journals should be 1.9678 in. (49.982 mm).
(b) Intake and exhaust valve lobes should have a distance of 1.673 in. (42.50 mm) from base to nose.
(c) Fuel transfer pump lobe should have a distance of 1.604 in. (40.73 mm).
(d) Replace a camshaft if lobes or bearings are worn beyond specifications.
(3)
Inspect the camshaft gear for cracks, chips and broken teeth. Inspect bore of gear for burrs and damage. Remove
burrs with fine crocus cloth, if possible. Replace gear if cracked or damaged.
(4)
Measure the camshaft retainer thickness. Retainer should be 0.465 to 0.472 (11.80-12.00 mm) thick. if worn beyond
these limits, replace retainer.
6-37
