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SHAFT 4646608 - Caterpillar



4646608 SHAFT Caterpillar parts SHAFT
Rating:
21
Alternative (cross code) number:
CA4646608
464-6608
4646608
Caterpillar 4646608 SHAFT
Weight: 2 pounds 1 kg.

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Number on catalog scheme: 7
 
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Use this procedure if a 261-13 Engine Timing Calibration required is active.Also use this procedure if any of the following conditions exist:
The Electronic Control Module (ECM) has been replaced.
The front gear group has been serviced.The ECM has the ability to calibrate the mechanical differences between the Top Center (TC) of the No. 1 piston and the orientation of the camshaft. A magnetic transducer can be installed into the flywheel housing that will signal the orientation of the flywheel to the ECM. This signal identifies the TC of the No. 1 piston. The ECM also uses the signal that is detected from the speed/timing sensor. This signal identifies the actual orientation of the camshaft.The signal from the transducer is generated as the flywheel's timing pin hole rotates past the tip of the transducer. The signal from the engine speed/timing sensor is generated by teeth that are machined into the back side of the camshaft gear.The two signals are used to calculate a timing offset that is stored in the ECM memory. This timing offset is applied to fuel injection timing for the engine.Note: A timing calibration will not increase the available engine power.
Table 1
Required Special Tools
Part Number Description
7X-1171 Transducer Adapter
6V-2197 Transducer
7X-1695 Cable As
170-3519 Harness Test Step 1. Check for Active Diagnostic Codes
Remove electrical power from the ECM.
Connect the Caterpillar Electronic Technician (ET) to the service tool connector. Refer to Troubleshooting, "Electronic Service Tools".
Restore electrical power to the ECM.
Check for any active diagnostic codes. Expected Result:No active diagnostic codes are present.Results:
OK - No active diagnostic codes are present. If a timing calibration is necessary due to service to the ECM or to the front gear train, proceed to Test Step 2.
Not OK - 261-13 Engine Timing Calibration required is the only active diagnostic code that is present. Proceed to Test Step 2.
Not OK - There are active diagnostic codes. A 261-13 is not one of the active diagnostic codes.Repair: Troubleshoot the active diagnostic codes. Make the necessary repairs.STOP
Not OK - A 261-13 and other active diagnostic codes are present.Repair: Make the necessary repairs in order to resolve the active diagnostic codes. The 261-13 Engine Timing Calibration required may remain active while the repairs are made.Repeat Test Step 1.Test Step 2. Install the Transducer Adapter
Remove electrical power from the ECM.
Illustration 1 g01138837
Flywheel and flywheel housing (typical example)
(1) Timing calibration plug
(2) Timing pin hole
Remove timing calibration plug (1) from either side of the flywheel housing.
Use a flashlight to examine the flywheel through the timing calibration port that is in the flywheel housing. Ensure that timing pin hole (2) that is machined into the flywheel is not aligned with the hole that is in the flywheel housing. If necessary, rotate the crankshaft in order to cause the misalignment of the holes.
Install the 7X-1171 Transducer Adapter into the timing calibration port that is in the flywheel housing. Results:Continue to the next test step.Test Step 3. Install the Transducer
Do not install the timing calibration probe over the timing pin hole in

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