TM 5-4310-275-14
WARNING
(9) Press bearing (41) onto the endbell end of
Dry cleaning solvent, Fed. Spec. P-D-680
the crankshaft until firmly seated.
or P-S-661, used to clean parts is
(10) Install a new oil seal (48) into the crank-
case seal recess.
potentially dangerous to personnel and
(11 ) Install the crankshaft assembly into the
property. Avoid repeated and prolonged
crankcase until bearing (47) is firmly seated.
skin contact. Do not use near open flame
(12) Press a new oil seal (40) into endbell
or excessive heat. Flash point of solvent
(35).
is 100 F. (38 C.) -- 138 F. (59 C.),
(13) Place gasket (39) onto the crankcase
b. Cleaning and Inspection.
mounting flange.
(1) Clean all parts with dry cleaning solvent,
Fed. Spec P-D-680.
(14) Carefully slide the endbell and oil seal
(2) Dry with clean, lint-free cloths and
over the crankshaft and attach with six nuts (36).
Tighten the nuts with equal torque.
compressed air. Ensure that all drilled passages
are clean.
(15) Place ball retainer (12) into the master
connecting rod, with the cupped side toward the
(3) Inspect parts for scratches, scoring,
outside of the rod.
corrosion and wear. See Table 5-2 for wear
tolerances.
(16) Install rod socket (13) over the ball
retainer, with the cupped side outward.
(4) Replace all bearings, seals, and gaskets.
(17) Slide piston retainer (17, fig. 7-4) onto
c. Reassembly.
piston (15), with the retainer threads toward the
(1) Press bearings (30, fig. 7-4) into each side
piston ball.
of the first stage link of the master connecting rod
(29).
(18) Attach the piston to the master con-
necting rod with the piston retainer. Install
(2) Press bearing (34) into the master
sufficient shims (16) to ensure that the piston
connecting rod crankshaft journal.
moves freely with no end play.
(3) Place twenty-five needle bearings around
(19) Attach pump cylinder (18) to cylinder
the inside diameter of the piston hole in con-
retainer (20) with pin (21),
necting link (10). Place washer (8) against one end
of the bearings and washer (11) against the op-
(20) Attach the cylinder retainer to oil
reservoir (25) with screws (19).
posite end of the bearings.
(21 ) Install safety wire to the piston retainer
and cylinder retainer attaching screws.
NOTE
Installation of the bearings and washers can be
(22) Place gasket (28) onto the oil reservoir
facilitated by apply a coat of Petrolatum, Federal
mounting flange.
Specification VV-P-236, to the parts.
(23) Install oil reservoir (25) onto the crank-
case while guiding the oil pump piston into the oil
(4) Position connecting link (10, fig. 7-4)
pump cylinder. Attach the oil reservoir to the
between the two arms on the master connecting
crankcase with sems fasteners (22).
rod and push piston pin (7) through the master
(24) Install preformed packing (26) onto
connecting rod and connecting link. Secure the
sight gage (27 ) and screw the gage into the oil
pie ton pin with cotter pin (6).
reservoir.
(5) Repeat steps (3) and (4) to install con-
(25) Install preformed packing (23) and
necting link (31), bearings (32), washers (5 and
drain plug (24) into the oil reservoir.
33), and cotter pin (3).
(26) Install the first stage piston, second
(6) Install the master connecting rod
stage piston, and third stage piston (para 7-6, 7-7
assembly onto crankshaft (42).
and 7-8).
(7) Position retaining plate (45) onto the
(27) Install the fan assembly (para 7-3).
drive end of the crankshaft.
(28) Fill the oil reservoir (fig. 3-1).
(8) Press bearing (47) onto the engine end of
the crankshaft until flush with the bearing
shoulder.
