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TM 10-3930-638-24&P
3-24. STEERING SYSTEM MAINTENANCE (cont)
c. Hydraulic Pump Repair (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
INSPECTION (cont)
15
Back plate (4)
Inspect
Replace if machined face scored, pitted
or eroded, or if threads damaged
16
Body (5)
Inspect
Replace if machined faces scored, pitted
or eroded, or if inside diameter of gear
pocket scored, pitted, or worn to less
than 2.107 inches
REASSEMBLY
17
Front
a. New O-ring (8)
Install
In groove of front plate
plate (3)
b. New seal (15)
Position and
With open part of “V” section down, tuck
install
seal (15) into grooves in front plate
c. New gaskets (14
Install
Press into seal (15)
and 13)
d. Two new balls
Position
In bores of front plate
(12) and springs
(11)
CAUTION
In the following step, be sure that diaphragm (10) fits inside rim
of seal (15). Also make sure that coils of springs (11) are not
wedged between diaphragm (10) and front plate (3).
e. Diaphragm (10)
Position and
Position bronze face up, and press into
install
raised rim of seal (15) and against back-up
gasket (13)
18
Shafts
a. Key (1)
Position
in keyway on shaft (6)
(6 and 7)
b. Gears (18 and 20)
Lubricate and
Dip gears in clean hydraulic oil and position
position
on shafts (6 and 7)
c. Retaining rings
Install
Use snap ring pliers
(17 and 19)
d. Shafts (6 and 7)
Lubricate and
Dip bushing area of shafts in clean hydrau-
install
lic oil and position in bushings (25) of
front plate (3)
19
Body (5)
a. Two dowel pins
Install
(21)
b. Body (5)
Lubricate and
Apply thin coat of heavy grease to both
install
machined faces of body (5). Position
body with small drilled hole in one of the
cavities toward pressure side of pump, and
with half moon port cavities facing away
from front plate (3). Slip body over gears
(18 and 20) and onto front plate (3)
3-182B CHANGE 2
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