PUMP-XMSN-YM 3863057 - Caterpillar

Symptoms
Before you complete any procedure, read Troubleshooting, "Troubleshooting Procedures" in this module.
"Air in Oil"Air in Oil
Follow this procedure if the oil is foaming in the power train oil system. The oil could also be discolored. A small amount of air in the power train oil is normal.
Check the inlet side of the pump.
Check the lines and check the fittings on the inlet side of the power train oil pump for leaks. Repair components and/or replace components, if necessary.ReferenceRefer to Specifications, "Transmission and Torque Converter Pump" in the Service Manual for your machine.Expected Results
The original problem is resolved. Results
OKAY: Stop.
NOT OKAY: Repair all leaks that are found. Check the operation of the machine for the original problem. If conditions are not resolved, proceed to Step 2.
Personal injury can result from hot oil spray and raised work tools.Make sure all the work tools have been lowered, the oil is cool and the pressure has been released from the hydraulic system before removing any components or lines.Do not allow hot oil or components to contact skin.
Check the main screen and check the torque converter scavenge screen for obstructions.
Drain the oil from the power train system.
Remove the bottom guard in order to gain access to the main screen and to the torque converter scavenge screen.
Remove the cover and remove the main screen. The cover and the main screen are located in front of the bevel gear case.
Remove the screens from the housing.
Check the screens for obstructions.ReferenceRefer to Disassembly and Assembly, "Bottom Guards" in the Service Manual for your machine.ReferenceRefer to Operation and Maintenance Manual, "Maintenance Interval Schedule".Expected Results
The original problem is resolved.Results
OKAY: Proceed to Step 3.
NOT OKAY: Determine the source of the obstructions. Repair the component. Wash the screens in a nonflammable solvent. If conditions are not resolved, proceed to Step 3.
Assemble the components and install the components that were removed.
Inspect the seal. If the seal is damaged, replace the seal.
Install these components: the screens, the cover and the bottom guard.
Fill the power train system with oil. ReferenceRefer to the Operation and Maintenance Manual, "Lubricant Viscosities" and Operation and Maintenance Manual, "Refill Capacities" for your machine.
Start the engine.
Maintain the oil between the "ADD" mark and the "FULL" mark on the dipstick.ReferenceRefer to the Operation and Maintenance Manual, "Transmission Oil Level - Check" for your machine.
Stop the engine.Expected Results
The air has been removed from the oil system.Results
OKAY: Stop.
NOT OKAY: The cause of the problem is uncertain. Please call technical support with the information that has been gathered.