Toro Groundsmaster
4000?D Service Manual page 198

PRELIMINARY – For Toro Distributor and Toro Company use only.
5. Determine necessary quantity of support shims.
A. Lubricate the axle case support bushing with a
thin coat of grease and slide axle case support onto
knuckle pin.
B. Position support shims that were removed during
disassembly between axle case support and axle
case. Install mounting screws into axle case. Slowly
tighten screws while frequently checking for clear-
ance (vertical endplay) between axle case support
and knuckle pin. If binding of components is noted
before screws are fully tightened, add additional sup-
port shims. Torque screws from 57 to 67 ft−lb (77 to
91 N−m).
C. Use dial indicator to measure vertical endplay of
axle case (Fig. 20).
AXLE CASE ASSEMBLY ENDPLAY:
0.001 to 0.008 in. (0.02 to 0.20 mm)
D. Adjust endplay by increasing or reducing number
of axle case support shims.
NOTE: Axle case support shims are available in
0.004 in. (0.1 mm), 0.008 in. (0.2 mm) and 0.016 in.
(0.4 mm) thickness.
6. After correct support shims have been determined,
remove mounting screws, apply heavy strength thread−
locking compound to screw threads, reinstall screws
and torque from 57 to 67 ft−lb (77 to 91 N−m).
IMPORTANT: Correct engagement between bevel
gears is critical to axle performance and durability.
7. Temporarily install the bevel gear case/axle case as-
sembly on the axle support. Position a dial indicator at
the tooths center. Prevent the axle from turning and
measure the upper bevel gear to differential shaft gear
backlash (Fig. 21).
UPPER BEVEL GEAR BACKLASH:
0.004 to 0.016 in. (0.10 to 0.40 mm)
8. Adjust backlash by increasing or reducing axle bear-
ing shim thickness (see Differential Shafts in this section
of this manual).
NOTE: Axle bearing shims are available in 0.004 in.
(0.1 mm), 0.008 in. (0.2 mm) and 0.020 in. (0.5 mm)
thickness.
Axles, Planetaries and Brakes
VERTICAL
ENDPLAY
5
3
1. Axle case support
2. Axle case
3. Bevel gearcase
3
2
1
5
1. Axle support
2. Upper bevel gear
3. Differential shaft gear
4
1. Axle cover assembly
2. Lower bevel gear
3. Axle gear
Page 6 − 18
4
57 to 67 ft−lb
(77 to 91 N−m)
1
Figure 20
4. Dial indicator
5. Knuckle pin
6. Support shim location
4
Figure 21
4. Dial indicator
5. Axle bearing shims
5
1
3
2
Figure 22
4. Dial indicator
5. Axle bearing shims
Groundsmaster 4000−D
6
2