shredding belts - Snowmobile Forum: Your #1 Snowmobile Forum

polaris_indy22 · 01-31-2013, 05:27 PM

i have a 1991 indy 650 and it keeps shredding belts. it has shredded 3 in 8 hrs of riding, i know it is caused by bad alignment between the clutch and secondary. can someone tell me how to fix this. also i notice that there is auctually 1/4 inch o play in the secondary is there any way to shim that to stop that from happening? would like to get this fixed asap. we have snow on the ground now and idk how long it is staying

edge800ves · 01-31-2013, 05:32 PM

http://www.snowmobileforum.com/engin...-tos-here.html

Should be able to follow the guide in this section

Josh Kidner · 01-31-2013, 05:44 PM

To reduce play in it take the bolt off (middle main bolt that holds it on) and take a washer out and try it again. I know it sounds backwards but less washers is less play

Josh Kidner · 01-31-2013, 05:44 PM

There should be 1/8 in. (i believe) in play in the secondary.

polaris_indy22 · 01-31-2013, 07:41 PM

Is the secondary adjustable at all? Bc it needs to come out to be in line with the clutch.

musicfreako · 01-31-2013, 07:54 PM

i know on arctic cats, you put shims on the jack shaft and then slide secondary on the shaft. Thats how you bring it out or push it in. And then adjust washers on bolt to aquire the proper free play

polaris_indy22 · 01-31-2013, 08:41 PM

so ill have to get spacers to adjust this?

**BC_Dan** · 01-31-2013, 09:03 PM

The clutch offset should be 5/8". Measure using a long straight edge that will span both clutches. hold it to the back of the primary and measure the distance from the straight edge to the back of the secondary.

To adjust, you will need spacers that fit on the jackshaft and spacers that fit on the holding bolt. You need to maintain the 1/8" float on the jackshaft to keep from side-loading the jackshaft bearing. The float will also allow the belt to self-align a little. To move the secondary in, remove a spacer from the jackshaft and add a spacer to the holding bolt. To move the secondary out, add a spacer to the jackshaft and remove a spacer from the bolt.

You should also check center to center on the clutches, it should be 12". Also, check for broken motor mounts. Perfectly adjusted clutches will still cause a belt to fail if the motor isn't planted.

polaris_indy22 · 01-31-2013, 09:32 PM

thanks for the help guys. i would really like to solve this problem soon. i got this sled as my first sled from my gpa and he only paid 100 ffor it so im trying not to put much money into it. the sled has gone through 3 belts so far and its getting annyoing that i cant figure out why.

what should i use for spacers?

steepndeep · 01-31-2013, 09:45 PM

The spacers are actually washers that are approximately 1 1/4" outside diameter with a 1" hole and come in various thicknesses. They are available from your dealer for sure but possibly also from a parts store or hardware store.

**BC_Dan** · 01-31-2013, 10:08 PM

Be careful of using regular steel washers, they rust big time and can make a mess of things. The spacers have a coating that is rust resistant.

groovymoon · 03-11-2013, 09:01 AM

I am having the same issue with my 07 Venture GT. I shredded a new belt within only 110 miles. The secondary has nearly 3/8 in of side to side free play the spec is 1-2 mm. The OE washers are about $2.50-4 each. But if they are just coated mild steel washers then the coating will eventually wear off and they will rust and disintegrate so.... If the proper stainless washers can be found.... what about using them?

white lightning · 03-11-2013, 11:19 AM

You can use any washers .. steel ones are fine as long as you service your clutch regularly. Only way it gets rusted if you trailering the sleds in an open trailer with NO covers (Ive seen quite a few ppl with an open trailers .. trailering their sleds without any covers on) up / down on the NYS Thruway thats the most saltiest roads in NYS. I wouldnt want to buy any of those sleds from those ppl. WL

groovymoon · 03-11-2013, 11:22 AM

I used to live in NY. Moved to MI in 96. I lived in: Manhattan, Delhi, Oneonta, Morrisville, Cobleskill, Dobbs Ferry, and the Albany area. My mom still lives in Delhi, my dad in NYC. Thanks for the tip. Michigan uses more salt per road mile than nearly any other state in the union.....There's salt mines under Detroit.

white lightning · 03-11-2013, 11:51 AM

I cant speak for MI as far as salted roads .. NYS is tolls paid and ppl who uses the thruway wants to see the roads being plowed and salted to keep it safe for those who travels thru. Other than that .. its not good for our vehicles at all. WL