ARMY TM 9-6115-464-34
AIR FORCE TO 35C2-3-445-2
NAVY NAVFAC P-8-624-34
b. Disassembly.
(1) Remove nut (3, figure 3–50) and support drive gear (4) on arbor press.
(2) Press shaft (5) out of gear and remove key (6) and thrust plate (7).
c. Cleaning, Inspection, and Repair.
(1)
(2)
(3)
(4)
(5)
(6)
(a)
(b)
(c)
(d)
(e)
(f)
(7)
(8)
(9)
(10)
WARNING
Solvent, Dry Cleaning P-D-680, Type II is flammable and moderately toxic to skin,
eyes and respiratory tract. Eye and skin protection required. Good general ventilation
is normally adequate. Failure to observe this warning could result in personal injury or
death.
WARNING
Compressed air used for cleaning and drying purposes can create airborne particles
that may enter the eyes. Pressure shall not exceed 30 psig and use only with adequate
chip guards and chipping goggles.
Failure to observe this warning could result in
personal injury or death.
Clean all parts in dry cleaning solvent (Federal Specification P-D-680) and dry thoroughly with
filtered compressed air.
Visually inspect drive gear for cracks and chipped, broken, or worn teeth.
Check thrust plate for cracks, breaks, and excessive wear.
Using a micrometer, dimensionally inspect camshaft in accordance with figure 3-51.
Inspect camshaft lobes and bearing journals for wear, scoring, and scratching. Polish minor nicks,
scores, and scratches with crocus cloth. Clean to remove abrasive residue.
Check camshaft bearing runout as follows:
Place camshaft in a set of vee blocks.
Position a dial indicator so that the foot rides on one of the bearing journals.
Set indicator pointer to the “zero” position.
Slowly rotate camshaft one complete revolution while observing dial indicator.
Runout shall not exceed 0.0040 inch total indicator reading.
Repeat the check for each bearing journal.
If runout of any bearing exceeds limit specified total (step 6(e) above), replace camshaft and
bearings.
Perform magnetic particle inspection on camshaft and drive gear in accordance with established
procedures.
Check all threads for crossing, stripping, and peening. Repair minor thread damage using a thread
chaser.
Measure and record diameter of camshaft bearings in cylinder block. Subtract camshaft bearing
journals dimensions from the corresponding bearing inner diameter. The difference shall not be less
than 0.0015 inch or greater than 0.0035 inch.
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