QuestionQUESTION: Hi Kevin,
My old camshaft synchronizer seized because the bearing went bad. I pulled out the old one. I would like to install the new one but I do not know exactly where to put the synchronizer gear or the cam gear for the installation.
Can you explain the procedure...I understand that the fine tune timing needs to be done off the computer but I would like to get it close mechanically so that I may possibly be able to drive it to the dealer.
ANSWER: basically mark the location of the old one and take off the cam sensor up top so that u can see the pos of where the gear is placed match it up to the new one and plop it in.
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QUESTION: That wasn't an option for me. When the old one seized I was driving. The teeth on the camshaft synchronizer gear broke off and stayed in one position while the engine (cam) kept turning...therefore they would no longer be in the same position (timed). Also the force of the gears jamming spun the old synchronizer...even where it mounts. There must be a procedure to reinstalling this part after they have fallen out of alignment.
AnswerREMOVAL - 4.0L
The Camshaft Position Sensor (CMP) on the 4.0L 6–cylinder engine is bolted to the top of the oil pump drive shaft assembly (CMP and Oil Pump Drive Shaft - 4.0L Engine). The sensor and drive shaft assembly is located on the right side of the engine near the oil filter (CMP Location - 4.0L Engine).
The rotational position of oil pump drive determines fuel synchronization only. It does not determine ignition timing.
NOTE: Do not attempt to rotate the oil pump drive to modify ignition timing.
Two different procedures are used for removal and installation. The first procedure will detail removal and installation of the sensor only. The second procedure will detail removal and installation of the sensor and oil pump drive shaft assembly. The second procedure is to be used if the engine has been disassembled.
An internal oil seal is used in the drive shaft housing that prevents engine oil at the bottom of the sensor. The seal is not serviceable.
SENSOR ONLY - 4.0L
Disconnect electrical connector at CMP sensor (CMP Location - 4.0L Engine).
Remove 2 sensor mounting bolts (CMP and Oil Pump Drive Shaft - 4.0L Engine) or (CMP Location - 4.0L Engine).
Remove sensor from oil pump drive.
OIL PUMP DRIVE AND SENSOR - 4.0L
If the CMP and oil pump drive are to be removed and installed, do not allow engine crankshaft or camshaft to rotate. CMP sensor relationship will be lost.
Disconnect electrical connector at CMP sensor (CMP Location - 4.0L Engine).
Remove 2 sensor mounting bolts (CMP and Oil Pump Drive Shaft - 4.0L Engine) or (CMP Location - 4.0L Engine).
Remove sensor from oil pump drive.
Before proceeding to next step, mark and note rotational position of oil pump drive in relationship to engine block. After installation, the CMP sensor should face rear of engine 0°.
Remove hold-down bolt and clamp (CMP Location - 4.0L Engine).
While pulling assembly from engine, note direction and position of pulse ring (CMP and Oil Pump Drive Shaft - 4.0L Engine). After removal, look down into top of oil pump and note direction and position of slot at top of oil pump gear.
Remove and discard old oil pump drive-to-engine block gasket.
