TM 5-3810-289-12
b. Torque locknut to 60/70 foot-pounds (fig. 4-3).
4-13. Rocker Arm Assembly Adjustment
a. Loosen locknut and back off adjustment screw
c. Always make final valve adjustment with the
(fig. P2). Insert feeler gage between rocker lever and
engine at operating temperature (para 1-5b (7)). Valve
top of valve stem or crosshead. Turn screw down until
tappet clearances are 0.015 inch (intake) and 0.025 inch
lever just touches feeler gage; lock adjusting screw in
(exhaust).
this position with locknut.
Section VI. MAINTENANCE OF ENGINE OIL COOLER AND OIL FILTER ASSEMBLY, AND MAIN CLUTCH
ADJUSTMENT
b. Cleaning, Inspection and Repair.
4-14. Oil Cooler
(1) Clean parts with an approved cleaning
a. Removal and Disassembly.
solvent.
(1) Refer to figure 4-4 and remove oil cooler.
(2) Inspect for cracks, breaks, and other
(2) Refer to figure 4-5 and disassemble oil
damage.
cooler.
(3) Replace defective parts.
b. Repair.
c. Reassembly and Installation. Reassemble and
(1) Repair damaged tubes by inserting a smaller
install oil filter assembly (fig. 3-1).
o.d. (outside diameter) tube inside damaged tube. Do
not restrict more than 5 percent of total number of tubes
in this manner.
4-16. Clutch Adjustment
(2) If more than 5 percent of tubes are defective,
a. Remove handhole cover (fig. 3-3).
discard element.
b.
Turn clutch until adjusting lockpin can be
reached.
Caution: Do not damage adjacent with heat
c. Disengage the pin and turn adjusting yoke
clockwise until pin will seat in a new hole.
while soldering.
d. Turn adjusting yoke one hole at a time until any
c. Reassembly and Installation.
tendency of the clutch to slip under normal load
(1) Refer to figure 4-5 and reassemble cooler.
conditions is overcome.
(2) Refer to figure 4-4 and install oil cooler.
e. Install handhole cover.
4-15. Oil Filter Assembly
a.
Removal and Disassembly.
Remove and
disassemble oil filter (fig. 3-1).
4-7
