Keeps throwing belt

[xcablb7]

The belt on my truck keeps jumping off the grooved pulleys, seems like it starts at the tensioner and cuts a rib right off.
has anyone had this problem ? This is already the second tensioner

 

[ChevyTruckGuy78]

i know my tensioner bouces alot more then it should im just wondering if i should try replaceing it with a delco one

 

[HurtMan]

I had to shim my cp-3 by placing a washer between the pump and the mounting bracket on the bottom bolt. This pulled the pump closer to the radiator. Just a regular 3/16 washer. Mine had the same problem one pass at wide open throttle and it would strip 2-3 ribbins off my belt on the tensioner. :hug:

 

[xcablb7]

mine has been doing this since before the dual fuelersbut i'll check that thanks

 

[770JOHNNYW]

my 2nd cp3 was off as well

 

[McRat]

Almost always alignment of pulleys. Get a yardstick/ruler and check attitude of pulleys.

Another thing, is sometimes the harmonic balancer will wobble. Replace.

 

[TheBac]

Since the new tensioner and idlers in 2009, my belt jumps 1-2 ribs every run at the strip. Have to keep resetting it in the pits. I may look into a slightly shorter belt to see if that can keep extra tension on the system.

 

[juddski88]

try a dayco tensioner if your pulleys are all in-line james, dylan is running one and has loved it

 

[Subman]

problem is usually the tensioner, replace it.

 

[hondarider552]

I threw my stock belt about a month ago at the track, whipped up and smacked the underside of teh hood, scared the crap out of me :roflmao:

Replaced with a Gates green belt and all is fine :thumb:

 

[MaxPowerLB7]

I had the same issue some time ago. Original tensioner threw belts, bought a new tensioner at napa, still threw belts. Bought tensioner at the dealership, problem solved.

 

[paint94979]

I threw my stock belt about a month ago at the track, whipped up and smacked the underside of teh hood, scared the crap out of me :roflmao:

Replaced with a Gates green belt and all is fine :thumb:

Jesus Brian you are a genuine fruitcake... I've heard the green belt works pretty good

 

[RKTMech]

Its good to look at belt length not creating enough tension, but if you cant find a belt to place the tensioner twords the tighter side of the gauge look into changing the dia. of one or two of the idler pulleys or adding a pulley where needed.

 

[hondarider552]

I've heard the green belt works pretty good

Works good so far, and I didnt even need dual cp3's to run it :roflmao:

 

[xcablb7]

Cool thx ill look at the alignment and get another tensioner

 

[McRat]

Reason I say alignment is 2nd CP3. This has be adjusted just right. Just bolting it up is not enough.

 

[dmaxvaz]

Since the new tensioner and idlers in 2009, my belt jumps 1-2 ribs every run at the strip. Have to keep resetting it in the pits. I may look into a slightly shorter belt to see if that can keep extra tension on the system.

Toman tells me its because the tensioner flexes in and out, the dealer has a fix for it. Its a huge new assy that bolts in.

 

[slipclutchms]

The dayco tensioner is WAY beefier. I was throwing belts all the time...switched pulleys, shimmed everything till square, no dice. Put on the new dayco tensioner, bam all set.
'
Dylan

 

[Noreaster]

This the right one?

 

[Dirtymaxx03]

the exact same thing was happening to me. i went through a napa tensioner, no fix. an autozone tensioner, no fix. 2 sets of idler pulleys, no fix. i put an OEM tensioner on and havent had a problem since