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Unread 03-30-2002, 06:27 AM   #1
ibms10
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Join Date: Mar 2002
Location: Spanish Fort, AL
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Help with serpentine belt.

I have changed the serpentine belt on other vehicles that I have owned with no problem, but for some reason, my 98 ZJ with a 4.0 is giving me a headache. The diagram shows that the tensioner pulley should just move to the right. However, I can't get the pulley to budge to get the new belt on. Any thoughts or assistance on changing the belt would be greatly appreciated. Thanks!

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1998 ZJ Laredo. 4.0L inline 6 cyl with Poweraid TBS and a K&N backyard intake. Powerslot rotors with Powerslot metal matrix pads.
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Unread 03-30-2002, 11:14 AM   #2
sadler207j
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Join Date: Feb 2002
Location: waretown NJ
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WELL I CAN ONLY SPEAK FOR THE 93 ZJ 4.0, TO GET THE BELT OFF OR ADJUST IT THERE IS NO PULLY TENSIONER LIKE MOST CARS. BUT IF YOU LOOK AT THE POWER STEARING PUMP, ON THE BOTTOM YOU WILL SEE A THREADED ROD THAT MOVES THE PUMP TO ADJUST TENSION. YOU HAVE TO LOSSEN ABOUT 4 BOLTS TO GET THE PUMP TO MOVE, ITS HAS PIVIOT POINTS, NOT ONLY DO YOU HAVE TO BACK OUT THAT THREADED ROD BUT YOU HAVE TO LOSSEN THE ANCHOR THAT IT THREADS THREW. IT TOOK ME SOME TIME TO FIGURE OUT HOW IT WORKED. GOOD LUCK, I HOPE THIS HELPS
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Unread 03-30-2002, 12:04 PM   #3
ibms10
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Thanks, I see the tensioner rod you are talking about. All I needed was a good start. I appreciate it.
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1998 ZJ Laredo. 4.0L inline 6 cyl with Poweraid TBS and a K&N backyard intake. Powerslot rotors with Powerslot metal matrix pads.
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Unread 03-31-2002, 08:15 AM   #4
ibms10
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Notes for anyone else with the same setup that may need a hand: On the '98 4.0L, it is unnecessary to remove the water pump. 1.)Use a 15mm socket to loosen the idler pulley, just a couple of turns. 2)At the end of the bracket that the idler pulley attached to, you will see another 15mm bolt that runs the length of the bracket. 3) Turn this counter clockwise until there is enough slack to remove the old belt. 4)Install the new belt and reverse these instructions. That's it, about 15 minutes not including time for applying band-aids for fan incidents during routing the new belt.
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1998 ZJ Laredo. 4.0L inline 6 cyl with Poweraid TBS and a K&N backyard intake. Powerslot rotors with Powerslot metal matrix pads.
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