03 F5 - Track Clunking & Binding -- Suggestions? - HCS Snowmobile Forums

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Old 01-12-2017, 05:51 PM   #1 (permalink)
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Default 03 F5 - Track Clunking & Binding -- Suggestions?

Ok, I replaced the jackshaft and driveshaft bearings. After putting it back together, it feels like the track is binding (clunk, clunk, clunk) when riding it slowly on the road. You can really feel it in the running boards. It's less noticeable in the snow.

I pulled the suspension again. I inspected everything I could think of in the skid. Put it back in and it's the same thing. When on the stand, the track spins freely by hand with the belt off.

Is it possible I got the driveshaft in wrong? It didn't seem that complicated, so I didn't think I could screw it up.

Could it be a clutch thing?

I appreciate any suggestions.....
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Old 01-12-2017, 07:14 PM   #2 (permalink)
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The rear shock, on the lower/forward end of it, it pivots on a bracket that is slightly curved and about 5" long. That bracket needs to be pointing Up, so the shock is resting high above the track. The lower shock eye should be 5", or so, above the bottom of the rails. Now, this may not be your issue, but I just wanted to have you check it, because when the skid is removed from the sled and just being handled around the garage it is possible for this bracket to pivot over center and fall Down. When you put the skid it, it still fits, still lines right up, and the track will spin freely with the sled raised on a jack but when you put it down and sit on the sled, the bracket pivots down farther and rubs the track. Making a thump clunk noise. If it is your issue, just unbolt the rear of the skid, then grab the shock and pivot it up over center, and bolt it back in. Worth a look. Don't have a belt that's just missing chunks do you? That thumps too.
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Old 01-12-2017, 08:48 PM   #3 (permalink)
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An hour glasses belt will thump also.
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Old 01-12-2017, 10:18 PM   #4 (permalink)
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I'd check what stronger800 suggested. I had that happen to me once.
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Old 01-13-2017, 10:40 AM   #5 (permalink)
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Thanks for the advice, guys. I inspected the suspension this morning, and the lower, front shock bracket is up above the rails (not down) as you described. I inspected the track adjustment one more time, checked the belt (looks ok), and loaded it on the trailer.

This will be my wife's ride for the weekend, so it's GOT to be right (else I'm renting a sled). I'll let you know how it goes.....
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Old 01-13-2017, 11:29 AM   #6 (permalink)
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Still clunking though? I'd rent, before I risked having to tow it and ruin the day.
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Old 01-13-2017, 11:30 AM   #7 (permalink)
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Now I'm even nervous. An audible clunk has to be coming from some physical thing. Have any time before you leave, to stare at it again?
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Old 01-13-2017, 01:27 PM   #8 (permalink)
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Ok, now you got ME nervous...

So I pulled it off the trailer, and tried running it around the back yard and got no noticeable clunking or vibration. Went up and down the dry street, and it was definitely noticeable. I looked and noticed some wear on the front rail caps. They are quite loose but bolt feels snug. I thought maybe the rails were spreading, causing the caps to rub as the track rotates. I checked all cross members, and they are all tight. I greased up the rail caps and ran it up the street again, but no change.

Why does it do it on dry or hard surfaces, but not on grass or snow? My last ride on it was in good, fresh snow, so maybe I just never noticed it.

I'll load it up and see what happens in the snow. I'll take it for a ride with the guys before letting the wife ride it.

Thanks again for the advice.
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Old 01-13-2017, 02:56 PM   #9 (permalink)
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Sorry about that. I'm just a paranoid o.c.d type guy. Maybe a single Track clip bent up or starting to come loose? And it's rubbing hard on the rails or a wheel on dry ground but not on soft material? Kinda unlikely, but it would be an easy fix. Just bend it or cut it off.
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Old 01-13-2017, 06:04 PM   #10 (permalink)
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The track not aligned correctly? the inside nubs rubbing the anti stab caps/ guides?
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