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 TM 9-2320-285-24-2
3-42.
FIFTH WHEEL HYDRAULIC SYSTEM MAINTENANCE (CONT)
a. Hydraulic Pump (cont).
STEP
LOCATION
ITEM
ACTION
REMARKS
REASSEMBLY (cont)
CAUTION
5
(cont)
Place body (6) on soft wood block to prevent marring mating surfaces.
b.
New seal (18)
Install
In pump body (6) with metal
case to outside of pump.
Force seal firmly into
place with suitable sleeve,
or press into pump body
c.
New retaining
Install
Use retaining ring pliers
ring (17)
d.
Two bearings
Install
In cover (14)
(16)
e.
Two dowel pins
Install
Use soft plastic hammer;
(13)
tap into cover (14)
f.
Two bearings
Install
In pump body (6)
(15)
g.
Drive gear (12)
Install
In cover (14)
and idler
gear (11)
h.
Seal (18)
Lubricate
Fill space between lips with
Lubriplate Aero-lube grease
i.
New preload
Assemble
On new wear plate (7)
seal (10),
load seal (9),
and sealing
ring (8)
j.
New wear plate
Install
Install with wear surface
(7)
facing gears (11 and 12)
k. Pump body (6)
Position
Against cover (14)
l.
Four new
Install
Do not tighten
washers (5)
and screws (4)
m. Four new
Install
Do not tighten
washers (3)
and screws (2)
n. Pump shaft
Rotate
o. Screws (2 and
Tighten
Tighten alternately to
4)
140 pounds inch torque
p. Four screws (4)
Tighten
To 370 pounds inch torque
q. Four screws (2)
Tighten
To 200 pounds inch torque
r. New key (1)
Position
In drive gear (12) shaft
keyway
3-420
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