866507 Mercruiser CLAMP

Table 1
Required Special Tools
Part Number Description
7X-1171 Transducer Adapter
6V-2197 Transducer
7X-1695 Cable As
170-3519 Harness (1)
(1) This item is not required if the engine harness has a connector for timing calibration.Test Step 1. INSTALL THE TRANSDUCER ADAPTER
Turn the keyswitch to the OFF position.
Use the appropriate engine turning tool to put either the No. 1 piston or the No. 6 piston at top center. Refer to Systems Operation/Testing and Adjusting, "Finding the Top Center Position for the No. 1 Piston".
Refer to Table 2. After the top center position has been located, rotate the crankshaft for the number of degrees that is applicable to your engine model. Be sure to rotate the crankshaft in the direction of rotation that is specified in the Table.
Table 2
Crankshaft Rotation
Engine Model Number of Degrees Direction of Rotation
3406E 60 Opposite Normal Rotation
C12 60 Opposite Normal Rotation
C15 60 Opposite Normal Rotation
C18 30 Opposite Normal Rotation
Illustration 1 g01154177
C12 right side view (typical example)
(1) Plug
Illustration 2 g01154178
3406E, C15, and C18 left side view (typical example)
(1) Plug
Refer to Table 3. Locate the engine's timing calibration port.
Table 3
Location of the Timing Calibration Port
Engine Model Crankshaft Counterweight Engine Location
3406E 2 Left Side
C12 8 Right Side
C15 2 Left Side
C18 2 Left Side
Remove plug (1) from the timing calibration port.
Thread the transducer adapter into the port. Results:Continue to the next test step.Test Step 2. INSTALL THE TRANSDUCER
If the crankshaft is not in the correct position when the transducer is installed, the transducer will be damaged when the engine is started.
Apply clean engine oil to a 2D-6392 O-Ring Seal. Install the O-ring seal on the end of the 6V-2197 Transducer.
Push the transducer through the transducer adapter until the transducer contacts the crankshaft counterweight.
Withdraw the transducer 1.0 mm (0.04 inch) and hand tighten the nut on the adapter sleeve in order to secure the transducer. Move the O-ring seal against the adapter. Results:Continue to the next test step.Test Step 3. CONNECT THE 7X-1695 CABLE AS
If the engine harness is equipped with a connector for timing calibration, connect the 7X-1695 Cable As to the connector for timing calibration and to the transducer.
If the engine harness is not equipped with a connector for timing calibration, perform the following procedure:
Disconnect the P2 connector from the ECM.
Remove the sealing plugs from P2-26 and P2-36. Do not discard the sealing plugs. The sealing plugs may be reinstalled when the timing calibration is complete. Note: Ensure that each wire is installed into the correct location. The timing calibration will not be successful if the wires are installed incorrectly.
Install the WH(White) wire of the 170-3519 Harness into P2-26.
Install the YL(Yellow) wire of the 170-3519 Harness into P2-36.
Connect the J2/P2 connectors. Tighten the allen head screw on the P2 connector to the appropriate torque. Refer to Troubleshooting, "Electrical Connectors - Inspect" for the correct torque value.
Connect the 7X-1695 Cable As to the connector for timing calibration and to the transducer. Results:Continue to the next test step.Test Step 4. START THE ENGINE AND CHECK FOR DIAGNOSTIC CODES
Connect Caterpillar Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools".
Start the engine and run the engine until the engine is at the normal operating temperature.
Check for active diagnostic codes. The engine must not have any active diagnostic codes during the timing calibration except for a 261-13 Engine Timing Calibration required.Expected Result:There are no active diagnostic codes or there is only an active 261-13 diagnostic code.Results:
OK - There are no active diagnostic codes or there is only an active 261-13 diagnostic code. Proceed to Test Step 5.
Not OK - There is at least one active code that is not 261-13.Repair: Troubleshoot and repair any active diagnostic codes before you continue with this procedure.STOPTest Step 5. CALIBRATE THE ENGINE SPEED/TIMING SENSOR
Set the engine speed to 1100 50 rpm. The engine speed must be steady within this rpm range in order for the calibration to be successful.
After the engine has warmed up, access the "Timing Calibration" screen on the Cat ET. Access the following display screens in order:
Service
Calibrations
Timing Calibration
To calibrate the timing, select "Continue" on Cat ET. Wait until Cat ET indicates that the timing is calibrated. Expected Result:Cat ET indicates that the timing is calibrated.Results:
OK - Cat ET indicates that the timing is calibrated.Repair: