Secondary adjustment screw full out, belt not squealing

Cummins88 · Jan 21, 2019

Hi guys,

Felt like i need to adjust my belt so i backed the screw off on the secondary and it wasn't any tighter (track run test on stand).. so i did it again and again.. finally i took it completely out and the belt still wouldn't get tight enough that it would just turn the track on the stand... I took the secondary off to inspect and i see a slight gap in the sheaves, they aren't touching eachother with no belt in it..

Is this a sign of a sacked out spring?

Is it just that the belt is worn out?

Should i take it apart and change the spring? I have a brand new spare one.

Sled has 2400 miles.

Thanks,
Mike

simnil · Jan 21, 2019

Are you wrenching indoors? (cold/warm?)

Usually you get no squeel until stuff, clutches, belt, is at running temperature, cold belts rarely squeel. A cold track is also harder to turn than a warmed up one. What happens if you engage the clutches and turn the track over for a while and then let go of the throttle? Will the track stop of it's own or does it continue rolling?

2XM3 · Jan 21, 2019

At that mileage i'd just pull it apart and give it a good look, might have something going on in there for sure :face-icon-small-coo

Sage Crusher · Jan 21, 2019

Yeah I would have to agree/ to take the time to gut the secondary with that many miles on her.
Flip the washer over too while your in there, they get a nasty groove cut into them over time from the deflection adjustment screw.

Cummins88 · Jan 21, 2019

simnil said:
Are you wrenching indoors? (cold/warm?)

Usually you get no squeel until stuff, clutches, belt, is at running temperature, cold belts rarely squeel. A cold track is also harder to turn than a warmed up one. What happens if you engage the clutches and turn the track over for a while and then let go of the throttle? Will the track stop of it's own or does it continue rolling?

I did this on a warm sled with warm clutches.. track doesn't turn on it's own even with the deflection screw completely out.

diamonddave · Jan 21, 2019

Almost every secondary I take apart that has 800-1,000 miles on it will have a worn out sheave bushing and a spacer that has dug into the sheave surface. Polaris doesn't sell the bushing, you must purchase from TEAM/Venom.

I would highly recommend you call Venom and purchase new spring, a sheave bushing, new spacer, and an updated hardened set screw. If you don't have a way to replace the bushing, take it to your local transmission rebuilder.

Cummins88 · Jan 21, 2019

diamonddave said:
Almost every secondary I take apart that has 800-1,000 miles on it will have a worn out sheave bushing and a spacer that has dug into the sheave surface. Polaris doesn't sell the bushing, you must purchase from TEAM/Venom.

I would highly recommend you call Venom and purchase new spring, a sheave bushing, new spacer, and an updated hardened set screw. If you don't have a way to replace the bushing, take it to your local transmission rebuilder.

Ok thanks, i think this is beyond my comfort zone. Should i bring it to the dealer to have them rebuild the clutch and if so how much would i be looking at?

Thanks,
Mike

2XM3 · Jan 21, 2019

Talk to your sledding friends first, maybe one has done it, super easy to do really if you have done some :face-icon-small-coo , other than the bushing its like a 30 minute job, just need a clutch press and the parts needed :face-icon-small-hap

Cummins88 · Jan 21, 2019

2XM3 said:
Talk to your sledding friends first, maybe one has done it, super easy to do really if you have done some :face-icon-small-coo , other than the bushing its like a 30 minute job, just need a clutch press and the parts needed :face-icon-small-hap

I have the clutch press because i've experimented with a different seconary spring in the past (black/purple). I'll try to find a video, maybe i can do it.

Thanks!

2XM3 · Jan 21, 2019

hardest part can be getting the 4 torx screws out, they sometimes require a hand impact driver and some heat, to remove If they are stuck bad in there I've had to machine them out btw:yuck:

revrider07 · Jan 21, 2019

Drill press works also and them there screws wow they can be a pain.

Killer Time Racing · Jan 22, 2019

One big question !!!!!!!!!!!

Is your SKS a 155?????

If it's a 146 I'll bet you have a belt for a 155 on there !!!
Seen people here in Michigan do it multiple times . The 146 is alot shorter than a 155 so you will get this problem.

Not the track the Center to Center of clutches !!!

Cummins88 · Jan 22, 2019

Killer Time Racing said:
One big question !!!!!!!!!!!

Is your SKS a 155?????

If it's a 146 I'll bet you have a belt for a 155 on there !!!
Seen people here in Michigan do it multiple times . The 146 is alot shorter than a 155 so you will get this problem.

Not the track the Center to Center of clutches !!!

I have a 155 and i do have the right belt... 1183 i think is the number.

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Secondary adjustment screw full out, belt not squealing

Cummins88

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