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TM 5-4210-220-34
2-19.
ENGINE - Continued
(15)
Lubricate the oil pump gears (3 and 4) and
the driven gear shaft with engine oil (item
17, Appendix B).
(16)
Install the oil pump gears (3 and 4).
NOTE
The manufacturers self-locking capscrews must
be used due to the close clearance between the
oil pump and the crankshaft.
(17)
Install the gear retaining plate (2) and
secure it to the crankshaft front cover (5)
using the self-locking capscrews (1).
Tighten the capscrews (1) to 17 ft lb (23
Nm).
b.
Regulator/Relief Valve Repair
NOTE
The oil pressure regulator and oil pressure relief valve both have all the same parts. The only difference
between the two valves is the location of the retaining pin (5); pin location changes the valve opening
pressures. Ensure to position pin in correct hole during valve assembly.
(1)
Clamp the body (4) in the soft jaws of a
vise.
(2)
Remove the spring seat retaining pin (5)
from the valve body (4).
(3)
Remove the spring seat (1), spring (2), and
valve (3) from the valve body (4).
WARNING
Dry cleaning solvent P-D-680 (safety or Stoddard’s
solvent) is potentially dangerous. Avoid repeated and
prolonged breathing of vapors and skin contact with the
liquid. Do not use near open flame, arcing equipment or
other ignition sources. Always wear eye protection and
protective clothing. The flash point of P-D-680 is 100 to
138 deg. F (30 - 59 deg. C).
(4)
Wash all components using dry cleaning
solvent (item 10, Appendix B).
PIN LOCATION
A - PRESSURE REGULATOR
B - PRESSURE RELIEF VALVE
WARNING
Death or serious injury could occur if compressed air Is directed against the skin. Do not use compressed
air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2.11 kg/cm2) or less. When
working with compressed air, always use chip guards eye protection and other personal protective
equipment.
2-235
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