Usage:
NOTE: The procedure to remove and install the front wheel bearings and Duo-Cone seals is the same for both the left and right front axles. Also refer to the topic "Assembly & Installation of Duo-Cone Seals" in this module for additional information.
1. Position the front wheel with drain plug (1) "down" in the 6:00 position as shown.
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Personal injury or death can result from a machine falling from a jack or supports. Make sure the machine is stopped on flat level ground. Apply the parking and secondary brakes. Block the tires to prevent the machine from rolling. |
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2. Position tooling (A) and a suitable stand or wooden blocks beneath the axle assembly as shown. Raise the machine until the front tire and rim to be removed is clear of the ground.
3. Position wooden blocks or suitable stands beneath frame support (2) as shown.
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The suspension cylinder rod and axle can drift downward after the tire is raised clear of the ground. Make sure the suspension cylinder rod and axle are supported before removing the tire and rim assembly or before removing the tooling used to raise the machine. |
4. Use either of the following methods to support the axle and suspension cylinder assembly:
a. Use a suitable chain positioned over the suspension cylinder and beneath the axle assembly. Remove any slack from the chain and connect the grab hook and a chain link as shown.
b. Leave tooling (A) in position on the bottom plate of the suspension cylinder.
5. Loosen nuts (3). Do not remove nuts (3) at this time.
6. Support tire and rim assembly (4) with a lift truck or suitable lifting device.
7. Remove the washers and nuts (3). For assembly purposes, the torque for nuts (3) is 1210 ± 55 N (890 ± 41 lb).
8. Remove tire and rim assembly (4). Tire and rim assembly (4) weighs 820 kg (1800 lb).
NOTE: Oil will drain from cover (5) when drain plug (1) is removed. Be prepared to catch and properly dispose of the oil.
9. Remove plug (1). Allow the oil to drain from behind cover (5). Check the condition of the O-ring seal on plug (1). Replace the O-ring seal on plug (1) with a new part if needed.
10. Remove plug (6) and make sure all of the oil has drained from cover (5). Check the condition of the gasket beneath plug (6). Replace the gasket beneath plug (6) with a new part if needed.
11. Remove bolts (7) from cover (5).
12. Install two of the bolts (7) into the forcing screw holes of cover (5) as shown. Evenly tightly the bolts until cover (5) is free from wheel (8).
13. Check the condition of the O-ring seal on cover (5). If the O-ring seal on cover (5) is worn or damaged use a new part for replacement.
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The brake discs and plates inside brake assembly (9) can move out of position when removing wheel (8). Component damage will occur if the discs and plates move during disassembly or assembly. Be sure to follow the procedures to keep the discs and plates in position before removing wheel (8) to assure correct assembly and avoid component damage. |
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Bleeder valve (11) will allow the loss of oil from the brake assembly piston when loosened. Oil will flow from bleeder valve (11) when evenly tightening tooling (B). Do not stand in front of bleeder valve (11). Be prepared to catch and properly dispose of the oil from bleeder valve (11) while tightening tooling (B). |
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14. Use the following steps to keep the plates and discs in brake assembly (9) from moving out of position.
a. Remove two plugs (10) from the back of brake assembly (9).
b. Install tooling (B) as shown into the openings for plugs (10). Finger tighten tooling (B) only.
c. Loosen bleeder valve (11).
d. Use a wrench to evenly tighten tooling (B) to approximately 27 N·m (20 lb ft).
e. Tighten bleeder valve (11) until hand tight.
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Wheel (8) can move outward on the axle assembly when bolts (12) and plate (13) are removed from the end of the axle. To prevent component damage and possible personal injury, make sure wheel (8) is properly supported before removing bolts (12) and plate (13). |
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15. Secure a chain onto wheel (8) with a washer and nut (3) as shown. Support wheel (8) with a hoist.
16. Remove bolts (12), plate (13) and the shim behind plate (13).
17. Remove wheel bearing (14). Check the condition of wheel bearing (14). If wheel bearing (14) is worn or damaged use a new part for replacement.
18. Use the hoist to remove wheel (8) from brake assembly (9). Wheel (8) weighs 600 kg (1320 lb).
19. Check the condition of bearing cup (15) in the wheel side bore of wheel (8). If bearing cup (15) is worn or damaged use a new part for replacement.
20. Check the condition of bearing cup (16) in the brake assembly side of wheel (8). If bearing cup (16) is worn or damaged use a new part for replacement.
NOTE: When removing and installing Duo-Cone Seals (17) and (18) in wheel (8), also refer to the topic "Assembly & Installation of Duo-Cone Seals" in this module for additional information.
21. Remove Duo-Cone Seals (17) and (18) from wheel (8). Clean seals (17) and (18). Check the condition of seals (17) and (18). If any component of a seal is worn or damaged use a new part for replacement.
22. Use tool (C) to install seal (17) into wheel (8).
23. Use tool (D) to install seal (18) into wheel (8).
24. Remove Duo-Cone Seals (19) and (20) from brake assembly (9). Clean seals (19) and (20). Check the condition of seals (19) and (20). If any component of the seal is worn or damaged use a new part for replacement.
25. Use tooling (E) to remove wheel bearing (21). Check the condition of wheel bearing (21). If bearing (21) is worn or damaged use a new part for replacement.
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Be sure all parts are thoroughly clean and free of dirt and debris. If any components are worn or damaged use new parts for replacement. Thoroughly clean the inside of brake assembly (9) before starting reassembly. |
NOTE: Use the following steps to install the front wheel bearings and Duo-Cone Seals.
26. Install wheel bearing (21).
NOTE: When installing Duo-Cone Seals (19) and (20) in brake assembly (9), also refer to the topic "Assembly & Installation of Duo-Cone Seals" in this module for additional information.
27. Use tool (C) to install Duo-Cone Seal (19) into brake assembly (9).
28. Use tool (D) to install Duo-Cone Seal (20) into brake assembly (9).
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Component damage can occur if the plates and discs in brake assembly (9) are not in the correct position when installing wheel (8). Do not force wheel (8) into brake assembly (9). Refer to the topic "Remove & Install Friction Discs & Plates" in this module for the proper tooling and procedure to align the discs and plates if wheel (8) does not move easily into brake assembly (9). |
29. Install wheel (8) as follows:
a. Support wheel (8) with a hoist.
b. Align the splines of wheel (8) with the discs and plates of brake assembly as shown.
c. Install wheel (8) into brake assembly (9).
30. Install wheel bearing (14), plate (13).
31. Install four bolts (12) evenly spaced into plate (13) as shown. Use a wrench to hand tighten bolts (12).
32. Remove the hoist supporting wheel (8).
33. Remove tooling (B) from brake assembly (9).
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Wheel (8) can move outward on the axle assembly when bolts (12) and plate (13) are removed. If wheel (8) moves without tooling (B) installed in brake assembly (9), the brake discs and plates can move out of position. When adjusting the bearings in the wheel assembly, be sure tooling (B) is installed in brake assembly (9) and wheel (8) is supported with a hoist before removing plate (13). |
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34. Adjust the wheel bearings as follows:
a. Rotate wheel (8) while evenly tightening four bolts (12) to a torque of 70 N·m (50 lb ft).
b. Use a depth micrometer to measure the distance from the surface of plate (13) to end of the axle. Position the tip of the micrometer through a forcing screw hole in plate (13) as shown. Measure and record the distance through each of the two holes. Find the average of the two measurements.
c. Fasten the hoist to wheel (8). Install tooling (B) into brake assembly (9). Tighten tooling (B) to a torque of approximately 27 N·m (20 lb ft).
d. Remove bolts (12) and plate (13).
e. Use a micrometer to measure the thickness of plate (13) at the two threaded forcing screw holes. Record each measurement. Find the average of the two measurements.
f. Find the difference of the measurements in steps b and e (subtract step e measurement from step b measurement).
g. Add 0.28 mm (.011 in) to the measurement found in step f. This is correct amount of shim to be placed beneath plate (13).
35. Install a shim of the correct thickness and plate (13) onto wheel (8).
36. Put 9S3263 Thread Lock on bolts (12). Use a wrench to install bolts (12) hand tight.
37. Remove the hoist supporting wheel (8).
38. Remove tooling (B). Install the O-ring seals and plugs (10). Tighten plugs (10).
39. Rotate wheel (8) while evenly tightening bolts (12) to torque of 250 ± 14 N·m (185 ± 10 lb ft).
40. Reverse the procedures and steps 2 through 11 to complete the wheel and tire assembly.
41. Fill the wheel with fluid to the correct level. See the Operation & Maintenance Manual.
42. Use bleeder valve (11) to bleed the brakes. See the topic "Removing Air from Hydraulic Brakes System (Bleed the Brakes)" in the Systems Operation/Testing & Adjusting Manual for this information.