2-57.
CLEANING AND INSPECTION.
e. Unscrew and remove sight plug (7), reservoir
tee (6), and pipe nipple (5).
a. Clean all parts with dry cleaning solvent,
f. Unscrew and remove relief valve (40), tube
Federal Specification P-D-680.
assembly (41), elbow (42), and reducing bushing (43).
b. Dry with clean, lint-free cloths and compressed
g. Remove six nuts (20), endbell (19), and gasket
air. Ensure that all drilled passages are clean.
(21) from the crankcase.
c. Inspect parts for scratches, scoring, corrosion
h. Remove the sems screws (2) and pull oil
and wear. See table for wear tolerances.
reservoir (1) from the crankcase. The oil pump piston
(15) will slide out of the pump cylinder.
d. Replace all bearings, seals, and gaskets.
2-58.
REASSEMBLY.
i. Remove screws (10), oil pump cylinder (11),
and cylinder retainer (9) from the oil reservoir.
a. Press bearings (32) into each side of the first
j. Remove pin (12) and separate the cylinder from
stage link of the master connecting rod (31).
the retainer.
b. Press bearing (33) into the master connecting
k. Unscrew piston retainer (13) from the master
rod crankshaft journal. If removed, press a new roll pin
connecting rod assembly. Remove shim (14), piston
(28) into the master connecting rod.
(15), ball (16), rod socket (18), and ball retainer (17).
c. Place 25 needle bearings (39) around the inside
l. Remove the first stage piston (paragraph 2-44)
diameter of the piston hole in connecting link (37).
second stage piston (paragraph 2-48) and third stage
Place washers (38) against each end of the bearings.
piston (paragraph 2-52).
Note
m. Pull crankshaft (24), oil seal (22), and bearing
(23) out of the crankcase.
Installation of the bearings and washers
can be facilitated by applying a coat of
n. Remove thrust washer (25), drive bushing (26),
Petrolatum, VV-P-236, to the parts.
bearing (29), and oil seal (30) from the crankcase (47).
d. Position connecting link (37) between the two
o. Remove cotter pin (34) and push the piston pin
arms on the master connecting rod and push piston pin
(35) out of the master connecting rod. Remove
(35) through the master connecting rod and connecting
connecting link (36) using care to prevent loss of the 25
link. Secure the piston pin with cotter pin (34).
needle bearings (39) and two washers (38).
e. Repeat steps c and d to install connecting link
p. Remove cotter pin (34) and push piston pin (35)
(36).
out of the master connecting rod, using care to prevent
loss of the 25 needle bearings (39) and washers (38).
f. Install the master connecting rod assembly onto
Remove connecting link (37).
crankshaft (24).
q. Pull bearings (32) from the master connecting
g. Position retaining plate (27) onto the drive end
rod.
of the crankshaft. Insert thrust washer (25) arid drive
brushing (26) into the crankshaft.
r. Pry retainer plate (27) from the master
connecting rod. Push bearing (33) out of the master
h. Press bearing (29) onto the motor end of the
connecting rod, if damaged or defective. Do not
crankshaft until flush with the bearing shoulder.
remove roll pin (28), unless defective.
i. Press bearing (23) onto the endbell end of the
crankshaft until firmly seated.
2-13
