G3600 A4 Engines Oil Temperature Is High Caterpillar


Oil Temperature Is High
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1.1. Probable Causes
2.1. Recommended Actions

Use this procedure in order to troubleshoot high oil temperature. Also, use this procedure if one of the following event codes is active or logged.

Table 1
J1939 Code and Description  Comments 
175-0
Engine Oil Temperature 1 : High - most severe (3) 
The engine oil temperature has exceeded the trip point and the delay time has expired.
The fuel is shut off.
The code is logged. 
175-15
Engine Oil Temperature 1 : High - least severe (1) 
The engine oil temperature has exceeded the trip point and the delay time has expired.
The code is logged. 
175-16
Engine Oil Temperature 1 : High - moderate severity (2) 
The engine oil temperature has exceeded the trip point and the delay time has expired.
The code is logged. 

Probable Causes

  • Codes

  • Coolant temperature

  • Oil level

  • Temperature regulators

  • Oil cooler

  • Valves

Recommended Actions

Table 2
Troubleshooting Test Step  Value  Result 

1. Check for Codes

A. Connect Cat® Electronic Technician (ET) to the service tool connector.

B. Look for active codes that are associated with the system for the event code.
 

Codes
 

Result: An associated code is active.

Repair: Troubleshoot any associated codes before continuing with this test.

Result: A code is active or logged.

Proceed to Test Step 2.
 

2. Check the Engine Coolant Temperature

A. Determine if a high coolant temperature condition exists.
 

Temperature
 

Result: The coolant temperature is OK.

Proceed to Test Step 3.

Result: The coolant temperature is NOT OK.

Repair: Refer to Troubleshooting, "Coolant Temperature Is High" for additional information.

If the problem is not resolved, proceed to Test Step 3.
 

3. Check the Engine Oil Level
 

Oil Level
 

Result: The oil level is OK.

Proceed to Test Step 4.

Result: The oil level is NOT OK.

Repair: Add oil and repair any leaks.

If the problem is not resolved, proceed to Test Step 4.
 

4. Check the Oil Temperature Regulators

A. Make sure that the engine oil temperature regulators open according to the correct values. Refer to Specifications, "Engine Oil Temperature Regulators" for additional information.
 

Regulators
 

Result: The oil temperature regulators are OK.

Proceed to Test Step 5.

Result: The oil temperature regulators are NOT OK.

Repair: Replace the oil temperature regulators.

If the problem is not resolved, proceed to Test Step 5.
 

5. Check the Oil Cooler for a Restriction

A. Check the inlet side of the oil cooler for debris or blockage.
 

Restriction
 

Result: There was not debris or restrictions in the oil cooler.

Proceed to Test Step 6.

Result: There was debris or restrictions in the oil cooler.

Repair: Clean or replace the oil cooler.

If the problem is not resolved, proceed to Test Step 6.
 

6. Inspect the Valves

A. Inspect the following:

- Stuck regulator valve
- Stuck relief valve
 

Stuck Valve 

Result: A valve was stuck.

Repair: Repair or replace the valve.

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).