Toro Groundsmaster 455-D Service Manual page 199

Inspection
Clean the disassembled parts by washing in cleaning
solvent. 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
sleeve, positioning each race as shown.
2. Fit inner race of tapered roller bearing to gear side of
pinion shaft, pushing it all the way against the pinion
shoulder.
3. Insert pinion shaft into sleeve. Fit other inner race to
shaft 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.
Tighten lock nut with special tool TOR4040 to specified
preload on bearings.
Pinion shaft bearing preload
NOTE: Make sure pinion shaft has no end play when
checking bearing preload.
6. After obtaining specified preload, secure lock nut by
bending tab washer.
®
Groundsmaster 455-D
Oil seal flush
with case face
Sleeve (lock) nut
Oil seal garter
spring facing toward
hyd. motor
0.04 ∼ 0.06 kg-m
(0.29 ∼ 0.43 ft-lb)
Page 6 - 17 Rev. C
O-ring
Sleeve
Tapered ro ller
Bearings
Pinion shaft
Bushing
Figure 30
Repairs