nailhead

Does anyone have the updated part number for the belt tensioner on my '93? I looked in the 12-valve part number section and then did a search using the listed number (3935819) at reliablegoods.com and got nothing. Mine is worn unevenly, which is causing a brand-new belt to rub on the pulley bracket. Thanks for any help,

Chris

wannadiesel

Get a Dayco one from Advance/Autozone/Pep Boys.

DNRCustoms

Ya get a aftermarket, much cheaper and will last

dv_shane

i bought one today for my 92 it cost 102.00 with a goodyear belt from checker auto . cummins wanted 225.00 the one i bought was made in china but who cares if it lasts.

nailhead

Thanks to all for the help-- I really don't want to trash that expensive belt with that toasted tensioner. Wish I could get more psyched about changing it out, though.

Chris

DNRCustoms

Dude It is a 5-10 min job, I did mine on the side of the road..lol

wannadiesel

One 13 mm bolt and it's done. The hardest part is snaking the belt around the fan.

Bob L

Is the tensioner part number the same for a '92 as the '93 ?

Thanks,
Bob

wannadiesel

Yes. It's the same tensioner from '89 - '02, which is why most parts stores actually have one in stock.

nailhead

No it's not-- not for those of us with only two arms. And check the description of my truck; I'm nowhere near new to wrenching.

nailhead

...and obtaining enough travel from the tensioner while making sure the (multiple expletives deleted) belt doesn't miss the crankshaft pulley. There is no task I've yet performed during the maintenance of this truck that is more apt to turn me into a hyperventilating psychotic. That and the cost of the tensioner are the reasons I've delayed replacing it as long as I have.

Chris

crossy

this thread might save you a few bucks. i just posted it last week. crossy

https://www.dieseltruckresource.com/...ight=tensioner

nailhead

Thank you for including that; a part number was just what I needed.

Chris

wannadiesel

Wow! It's never given me that much trouble except with a genuine Cummins belt that was within about 1/4" of being too short. Here's how I do it - and I've done just a few. I route the belt around everything but the alternator. Working from the front of the truck I pull the tensioner with my left hand and with my right put the belt over the alternator. I use a 1/2" breaker bar with a 3/8" adapter on the tensioner - much more leverage than a 3/8" drive ratchet or breaker. Sometimes the belt will get hung up on the pan rail or one of the timing case bolts, and that will keep you from even getting the belt close to going over the alternator pulley.

After 60+ of these KDP jobs I'm probably the only guy outside of a Dodge dealership who can route the belt without looking at the diagram. I did a non-A/C truck a couple weeks ago and felt like a doofus trying to route that thing.

Bob L

I just called AUTOZONE in Bakersfield, ca. gave them part #305219 they have one. Cost is $69 w/o tax. Total cost w/tax $75. It was a Dayco unit.