DIFFERENTIAL PINION END PLAY :

AXELS:

DIFFERENTIAL PINION END PLAY :

At each 800 hour interval, the differential pinion flange

bearings should be checked for endplay. If any endplay is

found, the following procedure should be followed in

conjunction with the vendor service manual:

1. Park machine on level ground, set parking brake

and lower blade.

2. Drain planetary and differential housings.

3. Using a small hooked rod, pull out sun gear and

axle shaft about 12 inches (30 cm) till axle shafts are

disconnected from differential splines.

Bearing Preload Adjustment

4. Remove drive

shaft

and

support

differential

housing with jack.

15. Rolling resistance can be adjusted by adjusting the

spindle nut.

5. Remove differential housing nuts and ferrules.

16. When proper rolling torque is obtained, install new

6. Remove differential assembly from axle housing.

lock and apply grease to outer face of lock. Install outer

locknut and tighten securely.

7. Mount differential on differential over- haul stand.

17. Recheck rolling resistance, readjusting if required.

8. Check and record ring gear backlash with a dial

indicator. The backlash reading should be .010 to .014

18. If rolling torque is within specification, bend two

inches (0, 25 to 0, 36 mm). This information is necessary

tangs inward and two outward.

for reassembly unless a new gear set is installed.

19. Install sun gear thrust ring and tap into end of

9. Loosen companion flange to facilitate flange

spindle.

removal later. Loosen thrust screw nut and remove thrust

screw. When installing thrust screw, screw in until it

20. Install sun gear on axle and replace retaining ring.

contacts ring gear and then back out .012 inch (0, 3 mm)

and lock with jam nut.

21. Install planetary carrier assembly and bolt into

place. Tighten capscrews to specified torque (refer to

10. Remove adjusting nut lock. Before re- moving

TORQUE SPECIFICATIONS CHART).

bearing cap bolts, use center punch to match mark bearing

caps to carrier assembly. This is to ensure correct match

22. Install sun gear thrust cap and new O ring, tighten

in reassembly.

capscrews to specified torque (refer to TORQUE

SPECIFICATIONS CHART).

11. Remove bearing cap bolts and bearing caps.

23. Replace drain plug in planetary housing and refill

12. Insert metal bar through differential to facilitate

planetary and differential housings to proper levels with

hoisting. Raise ends individually and remove adjusting

correct fluid (refer to LUBRICANTS SPECIFICATION

nuts and bearing cups.

CHART).

13. Hoist differential with assembled bearing cones

24. Install wheel on axle, install wheel nuts and torque

from carrier assembly. Tilt differential to allow ring gear to

to 450 ft-lbs (67 m-kg).

pass web in differential carrier.

25. Install wheel cleaner teeth and fenders. Adjust

14. Remove pinion shaft nut that was previously

cleaner teeth to proper clearance on wheel. Rotate wheel

loosened and remove washer. Remove companion flange

and check cleaner teeth clearance.

from pinion shaft with puller.

26. Jack up machine, remove blocking and lower

15. Remove bolts securing seal retainer to carrier and

machine to ground.

remove retainer. If necessary, tap with a soft mallet to

break seal between parts.

Rev. 760501

K300

50-3.3