New Belt & Sled Creeps forward at Idle

[skutr]

Put a new belt on my sons 95 Indy Lite and it's riding a little high on the secondary and creeps forward when idling. Put the old belt on and it's fine. Thoughts?

Thanks - Skutr

 

[rmk4ever]

Not sure on the lite's, but that era of polaris has the adj. plate on the secondary. Could try messing with that, otherwise some time on new belt should break in to where there is no creep. Primary spring could be sagged also.

 

[dawolf]

Not sure on the lite's, but that era of polaris has the adj. plate on the secondary. Could try messing with that, otherwise some time on new belt should break in to where there is no creep. Primary spring could be sagged also.

X2

 

[whitedust]

Adjust deflection if you can otherwise belt will wear down on its'own. Make sure you have the correct belt not Indy 500 belt different belt sizes.

 

[skutr]

Yup - I got the right belt. The indy lites run a P85 clutch which isn't adjustable secondary like the P90 clutches. I took the secondary apart and the spring was in the B3 hole. i moved it back to the stock B2 hole and that helped with acceleration, back shift and top end while running the old belt. I'm pretty sure it's because of the new belt but I'll double check the deflection, alignment, primary spring length and spring tension.

I just didn't want to miss anything and I've always gotten great ideas and good advice from everyone here. The good news is that the sled just rolled over 10,000 miles and I got it up to 69 mpg on the GPS today. Not bad for an 18 year old sled.

 

[kip]

Your belt is tight. Either your center to center is off or your offset is wrong. Both will cause the belt to be too tight and creep. You can also make the adjustment on the secondary to loosen the belt but I would check center to center and offset. A lot can wear and move after 10,000 miles. It's the little things that make big differences. Good Luck! Kip

 

[mikedrh]

New belt is probably wider (old belt is worn thinner) and makes it ride higher in the secondary clutch. Higher in the secondary clutch makes the belt too tight. The secondary clutch will have to come off, be disassembled and shims added to open it up a bit.

 

[old abe]

This is the reason to always check "specs" when going to a different brand, and or quality of belt. Not saying after market belts aren't good.

 

[skutr]

Both clutches were rebuilt before last season. The new belt rides a 1/4 inch above the secondary and the deflection is only .80 inches (should be 1.25") and the belt clearance on the primary is only .008" instead of .015 - .020.

 

[skutr]

The new belt is a Polaris brand belt and not an aftermarket.

 

[old abe]

That tells me the new belt is wider, on both primary and secondary. Are you positive on correct application?

 

[tyeeman]

The belt should only ride approx 1/8 inch above sheaves on the secondary clutch. That will give you your 1-1 1/4 inch belt deflection. The secondary clutch sheaves need to be adjusted. Not sure how it works on your sled but my previous 98 XLT Touring and 500 Indy Touring had a set screw of sorts that was adjusted in or out to set clutch sheave width.

 

[mikedrh]

Shim the secondary clutch to fit your new belt, leave the primary clutch alone. Keep the part number from your new belt and make sure you buy that part number in the future. Simple fix.

 

[skutr]

I did a little more digging into the specs and there's supposed to be 3 thrust washers in the secondary and there's only 2 in mine. I'll pick one or two up on my way home and let you know if that fixes it.

 

[mikedrh]

No set number of shims put whatever it takes to make the belt sit right. Polaris micro shows two on the picture and three under "number required".

 

[thebreeze]

Deflection too tight. Add a shim and you will be good to go.

 

[rlspol]

You will have to add 1 or 2 more shim's to open the secondary a little more so belt is not grapping. You can remove one of them after the belt wears a little to keep the correct deflection.