WHEEL-FRONT 6G6438 - Caterpillar

Running Engine
If the engine is running, the machine can be towed for a short distance under certain conditions. The brakes and the steering system must be operable.Note: If there is a failure in the propel system, the bypass valves will need to be disengaged before you tow the machine. Refer to Operation and Maintenance Manual, "Towing the Machine - Stopped Engine" for information on disengaging the bypass valves.
Illustration 1 g03789642
Block the drum and block the tires securely in order to prevent movement of the machine. Do not remove the blocking until the tow vehicle has been positioned and the tow lines are in place.
Illustration 2 g03789646
Install a balance line between ports "ar" and "af" of the axle pump.
Illustration 3 g03789650
Install a balance line between ports "dr" and "df" of the drum pump.
Attach the towing machine.
Remove the blocks.
Start the engine.
Release the parking brake.
Steer the machine that is towed in the direction of the tow line.
When the disabled machine is in place, set the parking brake.
Stop the engine and remove the key.
Block the machine.
Remove the tow lines.
Remove the balance lines. Stopped Engine
Shutting off the engine will result in the loss of machine steering and the machines brakes will be applied.
When the engine is stopped, additional steps may be required before the machine is towed in order to avoid damaging the power train, the steering system, and the brakes.
Illustration 4 g03789642
Block the drum and block the tires securely in order to prevent the movement of the machine. Do not remove the blocking until the tow vehicle has been positioned and the tow lines are in place.
Install the steering frame lock pin. Refer to the Operation and Maintenance Manual, "Steering Frame Lock" for further information on the steering frame lock.
Personal injury or death can result from a brake malfunction.Be sure all necessary repairs and adjustments have been made before a machine that has been towed to a service area, is put back into operation.
Disconnect the cylinders for steering from the hitch. Secure the cylinders to the main frame of the machine.
Illustration 5 g03789646
Install a balance line between ports "ar" and "af" of the axle pump.
Illustration 6 g03789650
Install a balance line between ports "dr" and "df" of the drum pump.
Connect the parking brake release pump. Refer to the Operation and Maintenance Manual, "Parking Brake Manual Release" for more information.
Attach the tow lines to the disabled machine.
Attach the tow line to the tow vehicle. Note: Move the tow vehicle so that there is slight tension on the tow line. This will maintain movement of the disabled machine when the parking brake is released.
Remove the steering lock pin.
Remove the blocks from the drum and the tires.
Release the parking brake to prevent excessive wear and damage to the braking system when towing.The procedure for manual release of the parking brake is outlined in the Operation and Maintenance Manual, "Parking Brake Manual Release".
Manually release the parking brake. Refer to the Operation and Maintenance Manual, "Parking Brake Manual Release" for more information.
Slowly tow the disabled machine to the desired destination.
Block the drum and block