jackate
NAXJA Forum User
- Location
- New jersey
I have a 1999 - 4.0 - XJ sport - 185,000
I need to tighten the belt but not sure of the best way to do it.
I need to tighten the belt but not sure of the best way to do it.
-
Welcome to the new NAXJA Forum! If your password does not work, please use "Forgot your password?" link on the log-in page. Please feel free to reach out to [email protected] if we can provide any assistance.
How do I tighten my serpintine belt?
- Thread starter jackate
- Start date
- Location
- Seattle, WA
There are two bolts - I believe they are both 15mm. Loosen the idler pulley, then loosen/tighten the adjuster bolt. Then tighten the idler pulley again to lock it in.
Picture stolen from someone else on this site:
Picture stolen from someone else on this site:
And b/c its sure to come up next, my rule of thumb, on the XJ at least, for tightening the belt is to get just past an audible slip with the A/C on and working the tires back and forth.
Some people go for deflection but when you've had a component on the serpentine go bad, you'll see why to go after the least amount of tension you can get away with.
jsut my .02
Some people go for deflection but when you've had a component on the serpentine go bad, you'll see why to go after the least amount of tension you can get away with.
jsut my .02
jackate
NAXJA Forum User
- Location
- New jersey
Got it.. Thanks for the help....
99XJK9
NAXJA Forum User
- Location
- Long Island, NY
Can someone please tell me if the adjusting bolt goes all the way through the bottom of the bracket? I loosened the bolt in the middle of the pulley and can move it back and forth. If tighten the adjustment bolt clockwise, it draws the pulley in. If I loosen the bolt it backs out through the top. Is it supposed to catch on the bottom and push the pulley out?
assuming it's a 99 4.0
you loosen the pulley bolt, then tighten the adjuster bolt. The tensioner goes underneath the serpentine belt. Tightening the bolt will draw it towards the manifold and take up the slack in the belt. don't overtighten it or you will replace an alternator soon.
you loosen the pulley bolt, then tighten the adjuster bolt. The tensioner goes underneath the serpentine belt. Tightening the bolt will draw it towards the manifold and take up the slack in the belt. don't overtighten it or you will replace an alternator soon.
99XJK9
NAXJA Forum User
- Location
- Long Island, NY
Thanks for the quick reply. Just realized the belt was in under instead of over the pulley. Corrected and works fine.
