TM 9-2320-260-34-1
3-19. CAM FOLLOWER HOUSING MAINTENANCE (Contd)
c. Cleaning and Inspection
1.
For general cleaning instructions, refer to para. 2-8.
2.
For general inspection instructions, refer to para. 2-9.
Measure outside diameter of follower shaft(s) (1). Replace follower shaft(s)(1) if worn less than
3.
0.748 in. (19.00 mm).
4.
Measure inside diameter of roller(s) (2). Replace roller(s) (2) if worn more than 0.503 in. (12.78 mm)
for exhaust and intake valve roller(s), 0.505 in. (12.83 mm) for fuel injector cam roller(s).
Measure outside diameter of roller(s) (2). Replace roller(s) (2) if worn less than 1.248 in. (31.70 mm)
5.
for exhaust and intake valve roller(s), 1.248 in. (31.70 mm) for fuel injector cam roller(s).
Measure outside diameter of roller pin(s) (3). Replace roller pin(s) (3) if worn less than 0.497 in.
6.
(12.62 mm).
Measure roller pin bore (5) of cam follower lever(s) (4). Replace cam follower lever(s) (4) if roller pin
7.
bore (5) measurement is more than 0.4990-0.4997 in. (12.675-12.692 mm).
Measure inside diameter of cam follower lever bushing(s) (6). Replace cam follower lever bush-
8.
ing(s) (6) if worn more than 0.752 in. (19.10 mm).
Apply pigment to ball end of new push tube (9) and insert in socket (10) of cam follower lever (4).
9.
Check that socket (10) is not out-of-round. Discard if less than 80% of ball end of new push tube (9)
is pigmented.
d.Repair
NOTE
Perform steps 1 through 7 if bushing requires replacement.
Ensure all metal chips are removed from bushing surface.
1. Using arbor press, remove cam follower lever bushing (6) from cam follower lever (4). Discard cam
follower lever bushing (6).
2. Aline oil holes (7) and (8) in new cam follower lever bushing (6) and cam follower lever (4).
3. Using arbor press, install new cam follower lever bushing (6) in cam follower lever (4).
4. Put soap in oil hole (7) of cam follower lever bushing (6).
5. Using countersink tool, cut a 60 chamfer at each end of cam follower lever bushing (6).
6. Using Nano reamer, cut bore of bushing (6) 0.7501-0.7511 in. (19.053-19.078 mm).
WARNING
Drycleaning solvent is flammable and will not be used near open
flame. Use only in well-ventilated places. Failure to do so may
result in injury to personnel.
Compressed air source will not exceed 30 psi (207 kPa). When
cleaning with compressed air, eyeshields must be worn. Failure
to wear eyeshields may result in injury to personnel.
7. Remove soap from oil hole (7) with drycleaning solvent and dry with compressed air.
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