Toro 30446 - Page 267

Groundsmaster 4000--D/4010--D Page 6 -- 29 Axles, Planetaries a nd Brakes
5. Installa new stake washer. Install the lock nut finger
tight.
6. Setthebearingpreloadbysecuringthebearingcase
in a vise. Thread a M12 x 1.5 hex head cap screw into
thesplinedend of theinputshaft/pinion gear andslowly
tighten the lock nut until 4 to 6 in-lb (0.4 to 0.7 N--m) of
force is required to rotate the input shaft/pinion gear in
the bearing case.
7. Secure the lock nut with the stake washer.
8. Useadepthgaugetomeasurethedistancefromthe
endfaceoftheinput shaft/piniongear tothematingsur-
face of the bearing c ase. Subtract the “Design Cone
Center Distance” from this distance to determine initial
shim thickness (Fig. 34).
DESIGN CONE CENTER DISTANCE
(distancefrommating surface of axle support toend
face of pinion gear):
1.870 +
0.002 in. (47.5 + 0.05 mm)
NOTE: Bearing case shims are available in 0.004 in.
(0.1 mm) and 0.008 in. (0.2 mm) thickness.
9. CoatnewO-ringswithgreaseandinstallthebearing
caseinthegearcase.Placeshimsonthegearcaseand
temporarily install gear case assembly into axle case.
Tighten mounting nuts and screws from 35 to 41 ft-lb
(47to56N--m).
10.Insert a screwdriver through the drain plug hole to
hold ring gear and measure the pinion gear to ring gear
backlash (Fig. 35).
PINION GEAR TO RING GEAR BACKLASH:
0.004 to 0.016 in. (0.10 to 0.40 mm)
11.Adjustbacklashbyincreasingorreducinggearcase
shim thickness.
12.Checkpiniongeartoringgearengagement(seePin-
ionGeartoRingGearEngagementinthissectionofthis
manual).
13.Place the correct combination of shims on the gear
case. Tighten mounting nuts and screws from 35 to 41
ft-lb (47 to 56 N--m).
14.Install r etaining rings and driven gear on input shaft/
pinion gear.
15.Ifthedrive gear(ondrivemotorshaft) wasremoved,
install the retaining rings and drive gear on the motor
shaft.
16.Use a new gasket and install the cover plate. Use a
new O-ring and install the drive motor.
1. Oil seal
2. Bearing case
3. Seal garter spring
Figure 33
1
2
3
0.040 in. (1.0 mm)
1. Input shaft/pinion gear 2. Bearing case
Figure 34
1
2
Design
Cone Center
Distance
1. Axle case
2. Screwdriver
3. Dial indicator
4. Input shaft/pinion gear
Figure 35
1
2
3
4
Axles, Planetaries
and Brakes