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Tow Rigs and Trailers Hey, not all of our Jeeps are great on the highway. Post here for tech related to getting your XJ to the trailhead.

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Old March 1st, 2006, 09:35
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Smittty9785 Smittty9785 is offline
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1990 xj serpentine belt tensioner location?

ok this is sad i just dont understand. well i lost my diagram about the serpentine belt route, i managed that. But now i cant find the damn tensioner to put a new one back on? any suggestions?
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Old March 1st, 2006, 10:51
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5-90 5-90 is offline
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Re: 1990 xj serpentine belt tensioner location?

Power Steering Pump. There are two bolts on the back, the top bolt on the front, and a nut on the slider stud - all take a 13m/m wrench.

Once you've loosened those, put a 1/2" socket on the head of the adjuster bolt (runs crosswise under the pump, you may want to remove the airbox to access it easier) and play with that bolt - LOOSEN to remove tension, TIGHTEN to increase it.

Tighten all four bolts/nuts when you're done. The two on the back will certainly want a wrench, and you don't have to loosen them very far anyhow - so a socket really isn't needed for the adjuster bolts - just the crosswise slide bolt.

Be careful you don't crack the "knuckle" that holds tension on the pump - it's sintered, and I haven't been able to start making new ones out of wrought stock yet...

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Old February 7th, 2009, 16:26
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mpzg90 mpzg90 is offline
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Re: 1990 xj serpentine belt tensioner location?

Holy crap i just spent like half an hour lookin for that last bolt on the back your a life saver, lol. thanks!
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