TUBE AS. 1687130 - Caterpillar

Illustration 1 g03814948
Example of the motion between the rim and tire.
Illustration 2 g03814992
Example of motion between flange assembly and rim assembly.Tire slip may occur for the following reasons:
When tire and wheel combinations are subjected to high torque inputs.
High loads on the machine where underfoot conditions do not allow the wheel to slip.
When tire and wheel interface is not optimal.
Tire inside diameter variance.
Rim seat not up to specifications.
Improper assembly.
Use of improper or excessive lubricant during mounting of tire.
Improper bead seating.
Bead damage.
Low inflation pressure.
Combination of both 1 and 2.A certain amount of slip is expected on any rim and tire combination. However, slipping over 180 degrees in a single event is excessive. Too much slip may result in loss of tire pressure, damaging the bead, sidewall of the tire, or the rim O-ring.Testing Rim and Tire Slip
Illustration 3 g03815032
Marking along the rim, flange, and tire to test for tire slip.
Mark a line across all components as shown in Illustration 3 and operate machine in conditions that are suspected to cause tire slip.
Observe the line while operating and note which components are slipping.Reducing Rim and Tire Slip
The following instructions should be performed if rim or tire slip is observed during testing.
Verify that the tires are properly inflated to the manufacturer recommended pressure.
If tires are below the recommended pressure, inflate the tire according to the manufacturer recommendation. Slightly higher tire pressure can reduce slip.Note: Do not pressurize above the manufacturers recommendation.
Illustration 4 g03815187
Illustration displaying normal bead positioning (A) and abnormal bead positioning (B) .
Verify that the bead of the tire is seated properly on the rim. Refer to (A) in Illustration 4.ReferenceRefer to Disassembly and Assembly, RENR8639, "Wheel and Tire (Rear) - Remove and Install".
If tire is not seated properly:
Inspect tire bead for a groove. If the tire is slipping due to an improper bead seat, there will often be a groove worn into the bead. If the bead is severely damaged, replacing the tire may be necessary.
Remove paint on bead seat area of rim to increase friction coefficient between tire and rim.
Reseat and pressurize the tire. Follow proper bead seating pressures according to the manufacturers recommendation. To ensure that the bead is fully seated, lube must be used. Be sure to use the proper amount of lube per the tire manufacturer.Pocket and Driver Installation
ReferenceRefer to Special Instruction, REHS1841, "General Welding Procedures" and Reuse And Salvage Guidelines, SEBD0512, "Caterpillar Service Welding Guide" Prior to welding on the machine.Note: Driver and pocket driver installation should not be performed unless slip was not resolved by Step 1 and Step 2 of ""Reducing Rim and Tire Slip"".Parts Required
Table 1
Parts Required    
Item     Qty     Part Number     Description    
1     2     8R-8359     Pocket Driver    
2     1     5T-5682     Driver    
Illustration 5 g03815248
(1) Pocket Driver (2) Driver (C) Flange (D) RimRim (D) and flange (C) locking can be improved by installing a heavy-duty, cross-type driver (2) which locks the two components together. The driver (2) is held in