TM 55-4920-394-13&P
k.
Remove six socket head cap screws (24) from each hanger trunnion (23). Withdraw both trunnion
hangers from hanger housing. Remove dowel pins (29).
l.
Cut safety wire (28) and remove two screws (27) securing hanger (26) to wear plate (34). Withdraw
hanger from hanger housing. Remove dowel pins (29).
m.
Disassemble hanger if required by removing bearings (30), and roll pin (31). Do not remove roll pin
(32) and stop (33) unless absolutely necessary.
n.
Grasp lock nut (36) and carefully withdraw piston and shoe retainer assembly (41) with wear plate
(34) attached from barrel and bearing assembly (53).
o.
Unthread socket head pipe plug (35) from pin (40).
p.
Bend tangs of lockwasher (37) out from slots on lock nut (36) and unthread lock nut from pin (40).
q.
Remove lockwashers (37 and 38) and separate wear plate (34) from piston and shoe retainer (41).
r.
Withdraw pin (40) from piston and shoe retainer assembly (41) and remove dowel pin (42) from pin
(40).
s.
Remove socket head cap screw (43) from spring retainer.
t.
Unthread spring retainer (44) from end of pump shaft (82).
u.
Remove screw and nut assembly (45) and spring (46) from spring retainer (44).
v.
Remove four socket head cap screws (48 and 51), two barrel stops (47), two hanger spacers (50)
and shims (49 and 52) from hanger housing (91).
w.
Pull barrel and bearing assembly (53) off spline of pump shaft (82), taking care not to damage
spline teeth or lapped surface of barrel.
x.
Remove six socket head cap screws (61) and separate barrel bearing (54) from cylinder barrel (56).
y.
Withdraw port plate (57) from pilot bore of hanger housing. Port plate is secured by dowel pin (58)
in port block (59) and may require slight rotating movement to free.
z.
Remove drive screws (68) and remove plate (67).
aa.
Remove plug (69) and O Ring (70) from port block (59).
ab.
Remove O Ring (62) and dowel pin (58) from port block (59).
4-5