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Page Title:
OIL PRESSURE REGULATOR VALVE |
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 70. OIL PRESSURE REGULATOR VALVE
Note. Components of the oil pressure regula-
tor valve are the same as the oil filter bypass
valve (fig. 99) and the oil cooler bypass valve
sure relief valve (fig. 102) except for the spring
which is longer. Do not interchange springs.
a. Removal. Figure 101. (A) Remove oil
prssure regulator valve plug and plain washer
from oil pressure regulator valve housing.
Discard plain washer. (B) Remove oil pres-
sure regulator spring and plunger from oil
pressure regulator valve housing. (C) Inspect
oil pressure regulator plunger bore in oil
pressure regulator valve housing for burs,
scratches, wear, or obstructions. Clean bore
thoroughly using dry- cleaning solvent or mineral
spirits paint thinner. Remove slight scratches
and burs in the bore with crocus cloth.
b. Repair. Repairs to the oil pressure regula-
tor valve components are limited to replace-
ment of parts.
c. Installation. Refer to figure 101 and re-
AND INSPECTING PISTON OIL COOL-
verse the sequence of instructions to install
ING NOZZLE OIL PRESSURE
the oil pressure regulator valve components.
RELIEF VALVE.
Use a new plain washer when installing plug.
c. Installation. Refer to figure 102 and re-
verse the sequence of instructions to install
SURE RELIEF VALVE
the piston cooling nozzle oil pressure relief
valve components. Use a new plain washer when
Note. The piston oil cooling nozzle oil pres-
installing plug.
sure relief valve components are identical to the
components of the oil filter bypass valve (fig.
99), and oil cooler bypass valve (fig. 100).
Note. The primary and final fuel filter ele-
a. Removal and Inspection. Figure 102. (A)
ments are the same and are replaced in the
Remove piston oil cooling nozzle oil pressure
same way. For instructional purposes, the final
relief valve plug and plain washer from oil
fuel filter element is replaced. The filter ele-
pressure regulator valve housing. Discard plain
ments are available in a parts kit which includes
washer. (B) Remove piston oil cooling nozzle
element washers and gaskets. Refer to TM 9-
oil pressure relief spring and plunger from bore
2815-204-35P for components of the kit.
in oil pressure regulator valve housing. (C) In-
spect piston oil cooling nozzle oil pressure
a. Removal. Remove the fuel filter elements
relief plunger bore in oil pressure regulator
as follows.
valve housing for burs, scratches, wear, or
obstructions. Clean bore thoroughly using dry-
(1) Figure 103. (A) Turn the fuel filter
mineral spirits paint
cleaning solvent or
vent valve counterclockwise to open
thinner. Remove slight scratches and burs in
position so that air will displace the
bore with crocus cloth.
fuel as it drains from the filter case.
(B) Open drain cock on bottom of filter
b. Repair. Repairs to the piston oil cooling
and drain fuel into a suitable container.
nozzle oil pressure relief valve are limited to
(C) Remove case nut, flat washer, and
replacement of parts.
preformed packing securing fuel filter
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