420A alternator belt broke how do i replace?

0r1landoDSM · Feb 11, 2011

i have no alternator belt on my car at all right now and im stuck and my friends house haha.. how can i go about putting on a new belt? do i need to remove the serpentine belt?

WickedBlk95GSX · Feb 11, 2011

No just loosen the alternator ( there is a bolt at the top of the alt bracket ) put the belt on and tighten it back up and your done.

ChiTownHussla · Feb 11, 2011

Okay. Loosen the tensioner with a size 12 wrench. Once thats off, take off old pieces and makesure all pulleys are clean. Then place on new belt at the crank, then the upper middle one then the alternator. If it rodent fit easy, move the alternator by taking off driver tire and removing plastic piece behind it. The alternator is held on by a size 12. Or 14. Then replace that bolt and put on the tensioner and tighten up

Bud92gsx · Feb 12, 2011

Its not hard just make sure you tighten it all the way other wise it will squeel when you start it up..

XiKeiyaZI · Feb 12, 2011

Or do like I had too once to get home and wrap shoestrings around it to the crank. (Yeah. Awesome, right?)

9!'clipseDOHC · Feb 12, 2011

There are three bolts that you need to mess with to install or adjust the alternator belt. There is the pivot bolt on the bottom, and the adjustment bolt and "lock down" bolt which are both on the top/driver's side. Loosen the pivot, loosen the "lock down", adjust the adjustment. It's that easy. You can lift up in the adjustment bolt and push the alternator towards the engine to get the new belt on. Then pull the alternator towards you, push the adjustment bolt back into place and tighten away. Once you reach the desired tension, secure it in place by tightening the pivot bolt and "lock down" bolt. It is a very, very easy process.

ChiTownHussla · Feb 12, 2011

9!'clipseDOHC said:
There are three bolts that you need to mess with to install or adjust the alternator belt. There is the pivot bolt on the bottom, and the adjustment bolt and "lock down" bolt which are both on the top/driver's side. Loosen the pivot, loosen the "lock down", adjust the adjustment. It's that easy. You can lift up in the adjustment bolt and push the alternator towards the engine to get the new belt on. Then pull the alternator towards you, push the adjustment bolt back into place and tighten away. Once you reach the desired tension, secure it in place by tightening the pivot bolt and "lock down" bolt. It is a very, very easy process.

Isn t this what I said?

9!'clipseDOHC · Feb 12, 2011

ChiTownHussla said:
Isn t this what I said?

I don't really know what you said. You don't need to remove the tire or the plastic piece behind it and I don't know what a "rodent" has to do with your alternator.

ChiTownHussla said:
Okay. Loosen the tensioner with a size 12 wrench. Once thats off, take off old pieces and makesure all pulleys are clean. Then place on new belt at the crank, then the upper middle one then the alternator. If it rodent fit easy, move the alternator by taking off driver tire and removing plastic piece behind it. The alternator is held on by a size 12. Or 14. Then replace that bolt and put on the tensioner and tighten up

XiKeiyaZI · Feb 12, 2011

9!'clipseDOHC said:
I don't really know what you said. You don't need to remove the tire or the plastic piece behind it and I don't know what a "rodent" has to do with your alternator.

Ebonics.

Good information though. To the OP, follow this man's words and you'll turn out just fine.

everbruin · Nov 15, 2011

thanks for this info! My 45k mi belt has a hole in between 2 belt ribs; the rest of the belt looks ok so I wonder how soon I need to replace it.
Thanks!

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XiKeiyaZI · Nov 15, 2011

Anything like that needs to be replaced as soon as possible.

1GASonny · Nov 14, 2018

Bump really for me -

so I have the kit and my belt is on its way out. I did loosen the tensioner thing and now I can't get the belt to come around the alt pulley and the nut that's holding the pulley. I've tried to see if the alt will wiggle a little to slide the belt out - but wont.

am I missing something??

1990TSIAWDTALON · Nov 15, 2018

Loosen the bottom pivot bolt too, then it should move. Take the adjuster bolt all the way out to make sure it isn't hanging up the adjustment. It's pretty easy and straight forward. No hidden bolts like the PS pump.

1GASonny · Nov 15, 2018

1990TSIAWDTALON said:
Loosen the bottom pivot bolt too, then it should move. Take the adjuster bolt all the way out to make sure it isn't hanging up the adjustment. It's pretty easy and straight forward. No hidden bolts like the PS pump.

It was a fun adventure getting the belt off. My clearance was crap so i had to remove the driver front wheel and get to the bottom of the alt bolt and take that completely apart.

It’s off now!!

1990TSIAWDTALON · Nov 15, 2018

Most DSM "adventures" are like that but glad you got to it to replace it. There will be a next time, so now you've done it once! Good to hear!

1GASonny · Nov 17, 2018

1990TSIAWDTALON said:
Most DSM "adventures" are like that but glad you got to it to replace it. There will be a next time, so now you've done it once! Good to hear!

Indeed. Everything is back on and working good as "new"!

o0GuitarKid0o · Nov 18, 2018

I always keep an extra belt on hand ,blew up my belt at Canadian tire 2 weeks ago Due to me rushing to drive my car after a motor swap (had the pully for the alternator on the water pump flipped LOL

)

Took 5 mins to throw another one on LOL

Didn't hit boost after that till I figured out my pully was flipped the wrong way LOL

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420A alternator belt broke how do i replace?

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