Toro Groundsmaster 3280-D Service Manual page 405

Installing the Input Shaft/Pinion Gear (4-Wheel Drive Axle) (continued)
Groundsmaster ® 3280-D/3320
05138SL Rev B
9. Use a depth gauge to measure the distance from the end face of the input
shaft/pinion gear to the mating surface of the bearing case. Subtract the
design cone center distance from this distance to determine initial shim
thickness (Figure 273).
Design cone center distance (distance from mating surface of the axle
support to the end face of the pinion gear): 47.50 ± 0.05 mm (1.870 ± 0.002
inch)
Note: Bearing case shims are available in 0.10 mm (0.004 inch) and 0.20
mm (0.008 inch) thickness.
10. Coat a new O-ring with grease. Place shims on the bearing case and
temporarily install the input shaft/pinion gear assembly into the axle case.
Tighten the mounting screws to 47 to 56 N·m (35 to 41 ft-lb).
g226492
1. Axle case
2. Screwdriver
11. Insert a screwdriver through the drain plug hole to hold the ring gear and
measure the pinion gear to ring gear backlash
Pinion gear to ring gear backlash: 0.10 to 0.40 mm (0.004 to 0.016 inch)
12. Adjust backlash by increasing or reducing the bearing case shim thickness.
13. Check the pinion gear to ring gear engagement; refer to
Gear Engagement (4-Wheel Drive Axle) (page
14. Place the correct combination of shims on the bearing case. Tighten the
mounting screws to 47 to 56 N·m (35 to 41 ft-lb).
Figure 274
3. Input shaft/pinion gear
4. Dial indicator
Page 8–63
(Figure 274).
Pinion Gear to Ring
8–70).
Drive Axles: Service and Repairs