BEARING (.010 UNDERSIZE) 4S8881 - Caterpillar

Use this procedure in order to troubleshoot a high differential pressure for the air inlet system. Also, use this procedure if one of the following engine events are active.
Table 1
Event Code
J1939 Code and Description Conditions which Generate this Code System Response
107-15 Engine Air Filter 1 Differential Pressure : High - least severe (1) The air filter differential pressure is above the trip point pressure for the delay time. The code is logged.
The engine power may be derated.
107-16 Engine Air Filter 1 Differential Pressure : High - moderate severity (2)
2809-15 Engine Air Filter 2 Differential Pressure : High - least severe (1) The air filter differential pressure is above the trip point pressure for the delay time. The code is logged.
The engine power may be derated.
2809-16 Engine Air Filter 2 Differential Pressure : High - least severe (1) Probable Causes
Air filter element
EnclosureRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in the order of the listed test steps.
Table 2
Troubleshooting Test Step Value Result
Check the Air Filter Element
A. Check the air intake system for plugged air filters or for damaged air filters.
Air Filter Element
Result: The air filter element is plugged or the piping is restricted.
Repair: Clean or replace the air filter element. Perform any necessary repairs.
Verify that the repair eliminated the problem.
Result: The air filter element is not plugged and the piping is not restricted.
Proceed to Test Step 2.
Enclosure
A. Check that the engine has been installed in an enclosure that is sufficiently ventilated.
Enclosure
Result: The engine enclosure is not sufficiently ventilated.
Repair: Repair the ventilation for the enclosure.
Verify that the repair eliminated the problem.
If the procedure did not correct the issue, contact your Cat dealer Technical Communicator (TC). For further assistance, your TC can confer with the Dealer Solutions Network (DSN).