Inspection
Clean the disassembled parts by washing in cleaning
solve
nt. Inspect gears and pinions to be sure their teeth
are in good condition. Check to be sure that each
bearing rotates smoothly. Examine housings for cracks.
Reassembly
Replace damaged or worn parts as necessary. Oil or
grease
the surfaces of rotating or sliding parts before
assembling. Grease oil seals and o-rings before
installing.
Assembling Pinion Shaft
1. Fit two outer races of tapered roller bearings into
slee
ve, positioning each race as shown.
2. Fit inner race of tapered roller bearing to gear side of
pi
nion shaft, pushing it all the way against the pinion
shoulder.
3. Insert pinion shaft into sleeve. Fit other inner race to
sha
ft and install o-ring and bushing. Pinion shaft is now
securely installed inside the sleeve.
4. Grease oil seal and install it between sleeve and
bushing, making outer end face flush with mating
face
of sleeve. Install seal with garter spring facing toward
hydraulic motor.
5. Grease o-ring. Install o-ring, tab washer and lock nut.
T
ighten lock nut with special tool TOR4040 to specified
preload on bearings.
with case face
ller
Bushing
Oil seal flush
Sleeve
Tapered ro
Bearings
Pinion shaft
Oil seal garter
spring facing toward
hyd. motor
Sleeve (lock) nut
O-ring
Figure 30
Pinion shaft bearing preload 0.04 ∼ 0.06 kg-m
(0.29 ∼ 0.43
ft-lb)
NOTE: Make sure pinion shaft has no end play when
checking bearing preload.
6. After obtaining specified preload, secure lock nut by
be
nding tab washer.
Axles and Brakes
Groundsmaster
®
455-D
Page 6 - 17
Rev. C
Repairs
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