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 TM 55-1905-223-24-16
REPAIR
Repair of hydraulic motor assembly consists of replacing: retaining rings (2) and (7), preformed packing (3), (4), (6), (14),
(17), (26), (28), (36), (40), (44), (49), (50), (51), (52). Seal plate (5), annular ball bearing (8), ball bearings (13 and 41), and
roller bearing (42).
ASSEMBLY (FIGURE 4-27)
a. Position preformed packing (44) and access cover (45) over boltholes on rear housing (43).
b. Install machine bolts (46) and secure access cover (45) to rear housing (43).
c.
Position preformed packing (49, 50, 51 and 52) over portholes on rear housing (43). Ensure that preformed
packing are installed as noted during disassembly.
d. Position rear housing manifold (48) over boltholes on rear housing (43). Ensure that preformed packing are
aligned.
e. Install machine bolts (47) and secure rear housing manifold (48) to rear housing (43).
f.
Insert stator vane springs (34) and stator vanes (35) into stacked stator (29).
g. Insert rotor vane inner springs (32), outer springs (31), and rotor vanes (30) into rotor (33).
h. Prelube the rotor and inside of stators before inserting assembled rotor into stacked stator (29).
i.
Check that rotor turns freely within stacked stator.
j.
Position preformed packing (36), plate (39), and dowel pins (38) on stacked stator (29). Ensure that dowel pins
are installed as noted during disassembly.
k.
Secure preformed packing (36) and plate (39) to stacked stator (29) with machine screws (37).
l.
Insert roller bearing (42) into rear housing (43).
m. Replace ball bearings (41) on rear housing as noted during disassembly.
n. Position preformed packing (40) between plate (39) and rear housing (43).
o. Align plate (39), rear housing (43) dowel pins (38) and engage stacked stator (29) with rear housing.
p. Repeat procedures in steps (f), (g), (h) and (i) for installation of stator (18).
4-59
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