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Help: TE630 Rear Sprocket Fell off at 65mph!

F

flyingbeard

Husqvarna
B Class
Hey Guys,

Currently stuck in Grand Forks ND. I was riding my New TE630 (954 mi) out to the Rockies to ride the Continental Divide Trail. Jumped on the Hwy for a little bit to make up some time and had the rear sprocket fall off at 65 mph. Lucky for me, I was able to keep the bike under control and pull off to the side of the road. All the bolts that mount the sprocket to the hub were missing. The sprocket came off and slide up the swing arm and then wedged between the rear tire and swing arm. Unable to flag down help, my riding partner and I removed the rear wheel and dislodged the rear sprocket. Then he then towed me 20 miles into Grand Forks. Bike is currently sitting at Revolutions Motor Sports.

Damage that I can see:

Rear Sprocket - toast!
Chain- most likely needs replacing
Front Sprocket - broken
Chain Guard - broken
Rear Tire- Cut on side wall (but still holding air)

I would check the bolts that mount the rear sprocket on all TE 630s. It seem like when the bike was put together maybe the bolts were not correctly torqued (how do you loose 6 bolts).

Any ideas, on getting parts overnight, still wanting to complete the trip. Also, seems to me it should be covered under warranty.

FB, stuck in Grand Forks
 
sorry to hear about it..

could try Halls for the parts.. I think they are very common (sprockets, chain, rear tire, sprocket bolts) and fit other Huskys. I'd also call Paul at Heinens about a warranty claim.

(217)789-0107

There may be other dealers also with these parts in stock but Hall's is close to ND.
 
Lucky to stay on, well done!

The sprocket bolts should have been checked on the first service at 600 miles. Its not uncommon for them to work loose on a new bike (of any brand, not just Husky) and all the dealers here check them regularly. As a service item, I'm not sure it will be warranty but you'll need to talk to the dealer who did the 1st service...

Dave
 
Thanks for the reply Fast1. Going to call Paul as soon as they open. Just a heads up to the other owners, check the torque of the mounting bolts.
 
HVUK said:
Lucky to stay on, well done!

The sprocket bolts should have been checked on the first service at 600 miles. Its not uncommon for them to work loose on a new bike (of any brand, not just Husky) and all the dealers here check them regularly. As a service item, I'm not sure it will be warranty but you'll need to talk to the dealer who did the 1st service...

Dave
Click to expand...
+1. They should b checked before you even ride the bike... I dont care who I get my bike from, with MY butt on the line if I go down on dirt or pavement at 60 MPH+, I check every nut/bolt I can get my hands on. Sprocket bolts should b loc-tited.
 
HVUK said:
The sprocket bolts should have been checked on the first service at 600 miles. Its not uncommon for them to work loose on a new bike (of any brand, not just Husky)
Click to expand...

I have owned a LOT of bikes over the last 30 plus years and I have to say husky has an issue here. I have never seen another brand loose more sprocket bolts than husky. I do not know what it is but it is true. Before I owned huskys I never really thought about sprocket bolts. Now I am checking them all the time after seeing MANY fall out and one like the poster here on a NEW 08 TXC510 with maybe 150 trail miles. Is it the bolts, the design, what?
 
What is the torque spec on 630 sprocket bolts? Also, counter shaft and axle (front/rear) nuts. These don't appear anywhere in the owner's manual (not that I saw anyway).
 
Wow, that had to have been a scary noise! Glad you're ok!

I've never had any issues with mine coming off, and when I have checked them, I've only ever been able to barely snug one up a few times out of many.. I was going to buy more of the OEM sprocket bolts because aftermarket ones seem to have trouble stripping out the socket cap with only a few times use of an allen wrench.
 
Motosportz said:
I have owned a LOT of bikes over the last 30 plus years and I have to say husky has an issue here. I have never seen another brand loose more sprocket bolts than husky. I do not know what it is but it is true. Before I owned huskys I never really thought about sprocket bolts. Now I am checking them all the time after seeing MANY fall out and one like the poster here on a NEW 08 TXC510 with maybe 150 trail miles. Is it the bolts, the design, what?
Click to expand...

It's more common on dirt bikes due I think due to the solid sprocket/hub mounting. Bikes with rubber cush drives don't seem to suffer. I did a couple of years with the Orange brand and we had the same issue there too. They need torquing on PDI and checking again on first service at least, or ideally thread locking.

Dave
 
My dealer checks the sprocket bolts anytime he sees my bike (and I assume others). All of them.

I assume it's an issue that can ruin your day, so I check them too.
 
Lucky you didn't bust the hub, as that's usually sacrificed when this happens. The hubs aren't cheap either - I think they're around $5-600 or so + a bunch of time to R&R bearings and re-lace to the rim. Huskies aren't the only bikes to have this problem. KTMs have it as well. The bigger the engine, the more likely it is to happen.
 
J.R. said:
I was going to buy more of the OEM sprocket bolts because aftermarket ones seem to have trouble stripping out the socket cap with only a few times use of an allen wrench.
Click to expand...

Always tighten the nut not the bolt. The bolt will bind up as it interfaces with the sprocket countersink.
 
Hubs & wheels are one thing....But I broke a chain on a sport bike on the interstate, busted the case. Of course I'm glad to be alive, but the cases, because you have to buy them both as a set were not cheap.
Locktite is your friend on sprocket bolts.
 
knobbytired said:
Used, or new from Husky? I think a new hub from Husky is something like $500-600, but I could be wrong. Not sure if it comes as just the hub, or as an assembly with bearings etc.
Click to expand...
If I had to buy a hub, I'd probably buy aftermarket. Better quality & usually cheaper.
 
Checked mine along with all the other nuts when I received bike but they still came loose after 500 KM. Poor quality locknuts! Replaced with better lock nuts. Also locktited all other chassis nuts. Just in case! No issue since.
 
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