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 TM 10-3930-638-24&P
3-24. STEERING SYSTEM MAINTENANCE (cont)
c. Hydraulic Pump Repair (cont).
REMARKS
ACTION
ITEM
LOCATION
STEP
DISASSEMBLY
Position and
In vise, with drive shaft (6) facing up
a. Hydraulic pump
1
Hydraulic
clamp
pump
Match mark
Use center punch and hammer
b. Back plate (4), body
(5) and front plate (3)
Loosen and
c. Eight cap screws (2)
remove
Remove
From vise
d. Hydraulic pump
CAUTION
Do not attempt to pry front plate and back plate apart. Prying
sections apart will damage machined surfaces.
e. Front plate (3) and
Separate
Holding pump in both hands, bump drive
back plate (4)
shaft (6) against a wooden block to
separate front and back plate
f. Drive shaft (6) and
Remove
Pull from bushing (25) in front plate (3)
idler shaft (7)
or back plate (4)
Remove
g. Body (5)
Place drive shaft (6) in bushing (25) of
section attached to body (5). Lightly
tap drive shaft (6) with plastic hammer
until body separates from front plate (3)
or back plate (4)
a. O-ring (8)
2
Back
Remove and
Pull from groove
plate (4)
discard
b. Thrust plate (9)
Remove and
Pull from machined surface
discard
3
Front
a. O-ring (8)
Remove and
Pull from groove
plate (3)
discard
CAUTION
in the following step, be careful not to scratch or damage machined
surface of front plate (3).
b. Diaphragm (10)
Remove and
Slip a sharp instrument under diaphragm
discard
and pry loose from front plate (3)
c. Two springs (11) and
Remove and
steel balls (12)
discard
d. Back-up gasket (13)
Remove and
protector gasket
discard
(14) and seal (15)
3-180 CHANGE 2
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