Bulletin 5-15-05 / A, replace lower sprocket bolt

[mountainhorse]

do I understand correctly that Polaris dealer will replace the current bolt with a new and different kind of bolt? What is the part number for that new bolt, I need to order it online...

On 2014 and 2015 units... and also, if you purchased a replacement-belt-kit with new bolt in it. (Bolt Only)

Install the new Grade 12.9 bolt ① PN 7520441 and hardened washer ② PN 7556800 with the washer domes
facing out.

GRADE 8.8 BOLT PARTS STOCK WARRANTY CLAIM PROCESS:
NOTE: Polaris dealers can replace the grade 8.8 bolt (PN 7519912) that was supplied in the 2014-2015 QuickDrive
Belt kit (PN 2205250). You are authorized to replace the bolt for both your parts inventory and bolts returned to
you from your customers.
Polaris will be recalling all 7519912 bolts. Please return the bolts to Polaris after filing a warranty claim.
Parts stock warranty coverage for 7519912 expires on December 31, 2016.

.

 

[Sage Crusher]

Ran into this situation on the snowest ride and broke my 10.9 bolt-and sheared all the teeth from my lower sprocket (aftermarket) - Aluminum on steel is not a good combo??
Cleaned all the splines and got a new lower gear (free) -
Have alot of slop as Big Ling posted and even tried on a new Drive shaft- scary slop!!
Banging steel on Aluminum =wear!

Interested in getting a set of drill guides and boring out the drive shaft end out and re tap the threads to use the 45m.m.12.9 grade bolt.
The 12.9 is pretty hard and maybe to brittle and not allowing the needed flex?
This is on my 14 Pro- and would be nice to counter bore as like the Axys shaft- like in my Axys/as I have not troubles with it yet in 700 miles with same aftermarket drive system.

S/C

 

[The Bob]

Does anyone have any reports of a ARP replacement breaking?

 

[kinghillrmk]

Thanks for the comments, took the sled to dealer and they replaced the bolt. One less worry now.

 

[Sage Crusher]

Thanks for the comments, took the sled to dealer and they replaced the bolt. One less worry now.

For the Moment... Not a sure fire fix!

S/C

 

[Outback Sam]

Broken lower bolt update

My sled is a 2015 with about 18 Hrs the lower bolt broke the week before the recall was issued,
while my buddy was trail riding with his wife.
The problem is created by excessive clearance between the sprocket & the drive shaft spline this thing fits like a saddle on a sow.
Without putting these parts up on my CMM to map out the exact clearances I would estimate there's about 0.01-0.015 of slop and it is not realistic to expect any 10 m.m.bolt to constrain the movement of the pulley under the load conditions it subjected to in this application.
The higher quality bolt will help but long term I have serious concerns that the problem will not repeat.
Polaris's solution of recessing the on the 16s is helpful as it transfers the movement away from the bolt head.
I made a drill guide for removing the broken bolt we have now used it twice it takes all the pain out of this process.

I took my sled the dealer which is a two plus hour drive as I would not take a push lawnmower to the local dealer.
They contacted Polaris who to their credit promptly sent replacement parts .
The problem is that the replacement drive-shaft pulley combo had as much or more slop than the original ones .
If the solution to this issue was as simple as just replacing the lower bolt with a slightly more expensive one why did Polaris not do this on the 16 sleds.
I expressed my concern to my dealer that the replacement parts will fail again under potentially life threatening conditions.
The response from Polaris was just to put the new parts in disregard the extreme amount of slop and follow the recall bulletin for installing the 12.9 bolt .
At this time I will move forward updating the drive-shaft end to the 16 configuration that utilizes a 45 m.m.12.9 grade bolt and then replace this bolt on regular schedule.
As I have little faith in what others have expressed and I consider to be a severely compromised design due to the extreme amount of clearance between the pulley and spline which is made worse by the cantilevered load on this pulley.