ADAPTER 2168585 - Caterpillar

Probable Causes
Engine oil cooler core
Jacket water pump
Auxiliary water pump (if equipped)
Water-cooled turbocharger (if equipped)
Air compressor (if equipped)
Cylinder head
Cylinder liner
Cylinder blockRecommended Actions
Note: The procedures have been listed in order of probability. Complete the procedures in the order of the listed test steps.
Table 1
Troubleshooting Test Steps Values Results
1. Check for Leaks in Engine Oil Cooler Core
Cooler
Result: A leak was not found.
Proceed to the next step.
Result: A leak was found.
Repair: Install a new oil cooler core.
Drain the crankcase and refill the crankcase with clean engine oil.
Install new engine oil filters. Refer to the Operation and Maintenance Manual.
If the problem is not resolved, proceed to the next step.
2. Check the Jacket Water Pump
A. Check the weep hole of the jacket water pump for plugging. A plugged weep hole may cause coolant to be forced past the pump shaft seals into the crankcase.
B. Thoroughly inspect the water pump for damage and cracks. If internal leakage is suspected, remove the pump from the engine in order to perform a thorough inspection.
Pump
Result: The weep hole was not plugged and the pump is not damaged.
Proceed to the next step.
Result: The weep hole was plugged.
Repair: Clear the plug.
Result: If a continuous drip is found coming from the water pump weep hole when the engine is off, or a constant stream when the engine is running,
Repair: Replace the water pump shaft seal, or replace the water pump.
Note: An intermittent drip coming from the weep hole is an acceptable amount of leakage. Intermittent dripping can start and