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TM 9-2320-364-34-4
20-122
20-47. CAM FOLLOWER/PUSH ROD REPAIR (CONT).
b.
Cleaning/Inspection.
Fuel is very flammable and can explode easily. To avoid serious injury or death, keep fuel
away from open fire and keep fire extinguisher within easy reach when working with fuel.
Do not work on fuel system when engine is hot. Fuel can be ignited by hot engine.
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only
with effective chip guarding and personal protective equipment (goggles/shield, gloves,
etc). Failure to comply may result in injury or death to personnel.
(1)
Wash all parts except cam followers in diesel fuel.
(2)
Dry all parts except cam followers with compressed air.
(3)
Wash cam followers in lubricating oil and wipe dry with cleaning cloth.
(4)
Inspect cam follower rollers for scoring, pitting, or flat spots. Replace cam follower if damaged.
(5)
Inspect cam follower (2) for nicks, burrs, scratches or dents.
(6)
Replace all damaged parts.
(7)
Position cam follower (2) in soft jawed vise.
NOTE
If clearance is more than 0.023
in. (0.58 mm), replace cam
follower.
(8)
Check that side clearance between cam
follower (2) and roller (3) is not more
than 0.023 in. (0.58 mm).
NOTE
If clearance is more than 0.010
in. (0.25 mm), replace cam
follower.
(9)
Using dial indicator, check for more than
0.010 in. (0.25 mm) pin (4) to bushing
clearance.
(10)
Remove cam follower (2) from soft jawed
vise.
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