BEARING-BALL 6Y1121 - Caterpillar

Personal injury or death could result when towing a disabled machine incorrectly.Block the machine to prevent movement before releasing the brakes. The machine can roll free if it is not blocked.
Perform the following procedure on the disabled machine.
Make sure that the transmission control is in the PARK position.
Block the wheels.
When towing the machine, attach tow line to the front tow hooks or rear tow pin only.
Hook up the towing machine. Refer to Operation and Maintenance Manual, "Towing the Machine" for the guidelines.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Illustration 1 g01294999
Remove drain plug (1) from the final drives. Drain the differential/final drive oil into a suitable container.Note: When possible, position the final drive drain plugs at the lowest point.
Remove covers (2) from each rear wheel.
Remove the axle shafts. Refer to the Power Train Disassembly and Assembly, "Axle Shaft - Remove" for the procedure.
Remove any damaged power train components that may rotate when the machine is towed.Note: When there is failure of the final drive, clean the system before you tow the machine. Debris in the wheel can cause extensive damage to the machine when you tow the machine.
Replace the cover for each rear wheel.
Install the drain plug in each of the final drives.
Remove the blocks from the wheels.
Check the steering by turning the steering wheel to the right and to the left.
Check the braking by applying the service brake pedal.
Move the transmission control to the NEUTRAL position.
Tow the disabled machine while the engine of the disabled machine is running. Pull the disabled machine with the towing machine.Note: The wheel bearings are not in oil when the final drives are drained. The maximum distance for towing is 30.5 m (100 ft) when the final drives are drained.
Make sure that none of the power train components are causing additional damage.
After the repairs are completed, install the axle shafts. Refer to the Power Train Disassembly and Assembly, "Axle Shaft - Install " for the procedure.
Fill the differential and final drives. See Operation and Maintenance Manual, "Capacities (Refill)". Before you operate the machine, check the oil level in the final drives. See Operation and Maintenance Manual, "Differential and Final Drive Oil - Check".