Question about 1998 Jeep Grand Cherokee

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98 Grand C jeep 4litre crankshaft end play

Trans is out and there is about quarter inch end play, damper to crank flange.Bellhousing bolts rubbing on cover, can the center main bearing with trust bearing be changed without pulling motor?

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  • mdcaron Feb 20, 2009

    thanks looks like Ineed a new crank and bearings



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  • Jeep Master
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Usually this can be done but I think that if you have wear on thrust faces, there is likely wear on support faces as well, Once you have the pan off, plastigage both rod and main bearings. if out of specs, you really should change all of them!! Make sure you torque everything properly and avoid getting oil on backs of bearings when installing... can lead to spun bearing.
good luck

Posted on Feb 18, 2009

  • Richard Scordino Feb 20, 2009

    You may be able to have crank re-ground and use "fat" bearings. Check with a good machinest...Some cranks are too thin and will go egg shaped on you if cut them. if you can, will save a few $. Or, depending upon how much wear you find, you may want to just get a short-block and be done with it. Then You will be pistons CAM BEARINGS (which will also wear like rod and mains) etc.
    good luck



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How to replace crank shaft position sensor

Click over image for zoom...


Fig. 1: View of the crankshaft position sensor and its location-1996 5.2L engine shown


Fig. 2: View of the crankshaft position sensor and its location-1996 4.0L engine shown

Removal & Installation
4.0L Engine
  1. The CKP sensor is located on the transmission bellhousing. Disengage the sensor wiring connector and remove the sensor wiring hold-down clip from the fuel rail.
  2. Remove the sensor mounting bolt and carefully pull the sensor out of the bellhousing.
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  1. The CKP sensor is bolted to the top of the cylinder block near the rear of the right cylinder head. Disengage the sensor wiring connector and remove the two sensor mounting bolts.
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Hope this helps (remember to rate this answer).

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  2. Remove or disconnect the following:
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