52952T 1 Mariner REMOVAL TOOL, Piston Pin Lock Ring

Recommended Actions
Table 1
Troubleshooting Test Steps Values Results
1. Inspection of the Fuel Supply
A. Visually check the fuel level in the fuel tank. Do not rely on the fuel gauge only.
B. Ensure that the fuel supply valve (if equipped) is in the full OPEN position.
Fuel level
Result: The fuel level is acceptable.
Proceed to Test Step 2.
Result: The fuel level is low.
Repair: Fill the tank.
2. Engine Shutdown Switches (if applicable)
A. The engine shutdown switches must be in OFF.
B. Use Cat ET to verify the status of the engine shutdown switches.
Note: When a shutdown occurs, the keyswitch must be turned to OFF for at least 15 seconds before restarting the engine.
Switches are in OFF
Result: The switches are in "OFF".
Proceed to Test Step 3.
Result: The switches are not in OFF.
Repair: Turn the switches to OFF.
3. Starting Aids (if applicable)
A. If cold ambient conditions exist, check the operation of the starting aids.
B. Verify that the starting aid is operating correctly.
Starting aids are operational
Result: The starting aid is operating correctly.
Proceed to Test Step 4.
Result: The starting aid is not operating correctly.
Repair: Refer to the appropriate circuit test in the Troubleshooting manual to troubleshoot the starting aid.
4. Restrictions in the Air Inlet and Exhaust System
A. Check for an air filter restriction indicator.
B. Check the air inlet and exhaust system for restrictions and/or leaks.
Air and Exhaust System restrictions
Result: There are no system restrictions.
Proceed to Test Step 5.
Result: There are system restrictions.
Refer to Systems Operation, "Air Inlet and Exhaust System" for additional information on the air inlet and exhaust systems.
Repair: Replace plugged air filters. Refer to the Operation and Maintenance Manual for the correct procedure.
5. Theft Deterrent System (If Equipped)
A. Verify that the theft deterrent system is not active.
Theft system is inactive.
Result: The theft deterrent system is not active.
Proceed to Test Step 6.
Result: The theft deterrent system is active.
Repair: Turn the theft deterrent system to OFF.
6. Check the Sensors for Proper Operation
A. The coolant temperature sensor must provide a correct signal for cold mode operation to operate correctly.
Note: Refer to Cold Mode Operation within the Systems Operation, "General Information".
B. Verify that the coolant temperature on Cat ET is reasonable for the conditions that are present.
Sensor output
Result: The sensor is operating properly.
Proceed to Test Step 7.
Result: The sensor is not operating properly.
Repair: Refer to Troubleshooting, "Sensor Signal (Analog, Passive) - Test" for troubleshooting information.
7. Check the Engine Speed/Timing Status
A. Crank the engine and observe the engine speed on the Cat ET status screen.
Note: Upon initial cranking, the status for engine speed may indicate that the engine speed signal is abnormal. This message will be replaced with an engine speed once the ECM is able to calculate a speed from the signal.
Timing signal
Result: The timing sensor is operating properly.
Proceed to Test Step 8.
Result: The timing sensor is not operating properly.
Repair: Refer to Troubleshooting, "Speed/Timing - Test" for more information.
8. Inspect the Fuel System
A. Inspect the fuel system. Refer to Systems Operation/Testing and Adjusting, "Fuel System" for additional information.
Note: Cold weather adversely affects the characteristics of the fuel. Refer to the engines Operation and Maintenance Manual for information on improving the characteristics of the fuel during cold-weather operation.
B. Check fuel quality. Refer to Testing and Adjusting, "Fuel Quality - Test" for the proper procedure. Check the fuel tank for debris or foreign objects which may block the fuel supply.
D. Check the filtered fuel pressure while the engine is being cranked. Refer to Testing and Adjusting, "Fuel System Pressure - Test" for the test procedure and for the correct pressure values.
E. Check for the proper operation of the fuel transfer pump. Refer to Systems Operation/Testing and Adjusting, "Fuel System" for test information.
Low-pressure fuel system
Result: The low-pressure fuel system is not operating properly.
Repair: If the fuel pressure is low, replace the fuel filters. Clean the primary filter/water separator of debris. Refer to the Operation and Maintenance Manual for details. Make the necessary repairs. Return the engine to service.
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).