16-21.PISTON PUMP - REPAIR (Contd)
d. Remove retaining ring (21).
Carefully loosen nut (C) and
capscrew (B) until spring (21) is
fully extended. Separate spring
washer (22), spring (21), and
spring washer (23) from cylinder
4. REMOVE YOKE (26) AND SHAFT (15).
Be careful not to damage shims (27)
when removing pintle covers (28).
a. Remove eight screws (28), then
remove pintle covers (29) from
each side of housing (6).
b. Retain shims (27), if possible,
and use a micrometer to measure
total shim thickness. If bearing
subassemblies (30, 31) are not
defective, the same shims (27),
or a new shim with the same
thickness, will be needed to
preload bearing subassemblies
(30, 31) at installation.
c. Remove O-rings (32) and bearing
spacer (33) from each pintle.
d. Slide yoke (26) from side to side
to loosen yoke bearing races (30)
within housing (6).Use an open
end wrench between yoke (26) and
pintle bearing (31) to help
remove races (30).Apply pressure
at the approximate center of
bearing (31) and allow bearing
rollers to gently press race (30)
out of housing (6).
e. Remove yoke (26) and drive shaft
(15) from housing (6) as an
assembly. Turn yoke (26) at an
angle and slide the two parts out
of housing (6).
f. Remove seat (34) and yoke spring
(35).Seat (36) and roll pin (37)
will be attached to yoke (26).