TM 5-3810-300-24&P-3
OIL PUMP 4.1
6. Set the screen cover (17) over the outer end of
the oil inlet pipe (19) and secure it to the pipe
and brackets (18) with bolts (64). Tighten the
bracket bolts (58) to the bearing caps (Fig. 2).
7. Place the screen (2) in the cover (17) and lock in
place with retainer (16).
8. Affix a new gasket to the pump end of the
scavenging pump inlet pipe, if so equipped, and
secure with bolts and lock washers.
On 3 and 4 cylinder engines equipped with the
scavenging pump section the scavenging pump
screen is part of the oil inlet tube, however, on 6
Fig. 11. Position of Scavenging Pump Outlet Flange
cylinder engines a separate screen is used.
Install scavenging pump screen, if used.
of one .005" shim will change the gear
tooth clearance by .0035".
9. Affix a new gasket to the scavenging pump
outlet pipe, then secure the pipe to pump body
3. Place a new gasket (76) between the outlet pipe
with lock washers and bolts.
and the pressure regulator and bolt the two parts
together loosely. Use a new gasket (35) and
NOTE: When installing an outlet flange
secure the outlet pipe (15) to the oil pump body
of the type illustrated in Fig. 11, be sure
(3) with the bolts not over 7/8" long. Attach the
the opening in the flange is toward the
pressure regulator (68) to the cylinder block
front of the pump (toward the drive-
using a new gasket (70).
driven gear).
When attaching the pump outlet and the
10. Re-check all bolts for tightness to assure there
pressure regulator, none of the bolts should be
will be no leaks in the oil pump and pipe
tightened until all the bolts have been started.
mounting connections.
After all bolts are started, the outlet pipe bolts
(57) should be tightened alternately, then the
11. Place a new gasket on the oil pan and install the
pressure regulator bolts (71) should be
oil pan on the cylinder block. All the oil pan bolts
tightened, and finally the pipe-to-regulator bolts
should be started before any are tightened.
(77) should be secured.
This procedure
Bolts should be tightened snugly but not
prevents twisting the outlet pipe.
excessively, starting with the center bolts and
working toward each end of the oil pan.
4. Attach the pump screen brackets (18) to the
Excessive tightening of the bolts will crush the oil
main bearing caps with lock washers and the
pan gasket unnecessarily.
bolts (58). Do not tighten bolts.
12. Fill the crankcase to the proper level with the oil
5. Affix a new gasket (27) to the pump end of the
viscosity recommended in the Lubricating Oil
inlet pipe (19), then attach the pipe to the oil
Specifications in Section 13.
pump.
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