HOSE AS 4790202 - Caterpillar

When testing and adjusting the transmission and power train, move the machine to an area clear of obstructions, with safe exhaust ventilation for the exhausts. Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, do the procedure that follows before testing and adjusting the transmission and power train.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting, and repair of the machine. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Before you begin the adjustment procedure, refer to Systems Operation, Testing and Adjusting, "Machine Preparation for Troubleshooting".
Table 1
Required Tools
Part Number Description Qty
6V-4074(1) Spanner Wrench 1
5P-4204(2) Wrench 1
9U-5015 Torque Wrench Gp (3/4 Inch Drive) 1
(1) Use on 120H and on 135H Machines
(2) Use on the Following Machines 12H, 140H, 143H, 160H and 163H
Table 2
Bearing Preload for the Final Drive
Final Drive Group Part Number for Nut Adjustment Torque Final Torque
194-6773 2G-6396 170 N m (125 lb ft) 102 N m (75 lb ft)
194-6774
8W-4368 8D-3540 204 N m (150 lb ft) 136 N m (100 lb ft)
202-7593
Park the machine on a level surface.
Support the machine so that the rear wheels are off the ground. The machine must be in a stable position in order to be able to turn the rear tires.
Illustration 1 g00798243
View of the left rear of the machine
(1) Tandem cover
Drain the oil from the tandem housing into a suitable container. Remove the tandem cover (1). Note: Do not reuse drained fluids. Discard drained fluids according to local regulations.
Illustration 2 g00798246
View of the left rear of the machine
(2) Lock
(3) Bolt
(4) Nut
Remove bolt (3). Remove lock (2).
Attach the wrench for your machine to the appropriate torque wrench.
Turn the tires while you tighten nut (4). Tighten the nut to the adjustment torque that is specified in Table 2.
In order to seat the sprockets, hit the hub of the sprocket with a large punch and hammer.
Repeat Steps 6 and 7 until nut (4) does not turn at the adjustment torque.
Loosen nut (4) by one locking position.
Tighten nut (4) to the final torque that is specified in Table 2. Note: The rolling torque that is specified in Disassembly and Assembly, "Final Drives" includes fewer components. The rolling torque is substantially lower. Do not confuse the two values for rolling torque.
If nut (4) is in a locking position, install lock (2) and install bolt (3).
If nut (4) is not in a locking position, tighten nut (4) to the next locking position. With the nut in the locking position, install lock (2), and install bolt (3).
Install tandem cover (1). Fill the tandem housing with oil to the correct level.
Repeat Step 2 through Step 13 for the other final drive.