rear suspension - HCS Snowmobile Forums

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Old 06-12-2019, 09:52 AM   #1 (permalink)
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Default rear suspension

so got her on the bench yesterday finally.

took all the bogie wheels off except the very rear shaft 3, took out the torision springs , etc. gonna overhaul the whole thing, new bearings , springs , shocks , give it a therough greasing etc before it goes back in the sled.


everything went ok then I get to the bottom bolts that hang onto the shock. the front track shock has 2 bolts into a shaft.one came out without issue , the other seems to just want to spin in the shaft and wont back out.is there a trick to this of do I need to just warm the heat to it and hope for the best? I don't remember running into this issue on the last one I did?similar issue with the rear track shock,top bolt came out ok but the bottoms a bitch?



and last but not least , the very rear shaft that holds the 3 larger wheels , do I need to take the track tension bolts all the way out to loosen the bolts that hold it onto the skid or no?


thanks for any help guys.
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Old 06-12-2019, 10:31 AM   #2 (permalink)
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Not totally familiar with those uncoupled skids, but aren't the idler wheels cutout with holes large enough to access a ratchet and socket to easily get at and remove those bolts? Not sure what your asking either.
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Old 06-12-2019, 10:45 AM   #3 (permalink)
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As far as removing the rear axle and idlers...just loosen the tension bolts a good amount, slide the axle assembly back far enough, and unbolt the real axle bolts holding the wheels on the axle....everything should slide out.
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Old 06-12-2019, 12:38 PM   #4 (permalink)
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I have one of these sleds and have had the rear suspension out. But, I can't picture which bolts you're having trouble with.

If these are shafts held on by bolts on both sides, I always take the fact that they spin as a good sign. I've had way too many of those seized and that's not fun. They way I get around that is by putting the good bolt back on and snugging it down. Then, crack the other bolt.

Generally, I can go back to the first bolt and get it loose - thereby, having both bolts loose at the same time. Sometimes, I have to re-tighten and loosen the other side again - maybe do that a couple of times before I can finally get both loose at the same time.
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Last edited by p51mstg; 06-12-2019 at 12:45 PM.
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Old 06-12-2019, 05:18 PM   #5 (permalink)
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Really helps if you have a impact wrench. Can't believe how good those cordless ones now work.
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Old 06-12-2019, 06:28 PM   #6 (permalink)
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Join Date: Aug 2006
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Current Sled(s): 2007 Dragon 700 ////05' switchback 600
Previous Sled(s): 03 zr 900/ 03 zr 800/99 mach z 800/03 vmax 600/95 vmax 500/
Location: mooseland
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18-19 Mileage not enough
17-18 Mileage: not enough
16-17 Mileage: not enough
15-16 Mileage: not enough
Age: 5
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Quote:
Originally Posted by too slow View Post
Not totally familiar with those uncoupled skids, but aren't the idler wheels cutout with holes large enough to access a ratchet and socket to easily get at and remove those bolts? Not sure what your asking either.
yeah its a shaft that runs from rail to rail and has the shock resting on it. Much lik the front suspension bolts that hold the skid to the tunnel , theres a bolt on both sides.

Here i tried retightening the other to try and break the other loose, but no dice.just spins inside the shaft and wont back out.
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Old 06-12-2019, 06:29 PM   #7 (permalink)
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Join Date: Aug 2006
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Current Sled(s): 2007 Dragon 700 ////05' switchback 600
Previous Sled(s): 03 zr 900/ 03 zr 800/99 mach z 800/03 vmax 600/95 vmax 500/
Location: mooseland
Favorite Riding Area: your sister
18-19 Mileage not enough
17-18 Mileage: not enough
16-17 Mileage: not enough
15-16 Mileage: not enough
Age: 5
Riding Since: 1990
Default

Quote:
Originally Posted by p51mstg View Post
I have one of these sleds and have had the rear suspension out. But, I can't picture which bolts you're having trouble with.

If these are shafts held on by bolts on both sides, I always take the fact that they spin as a good sign. I've had way too many of those seized and that's not fun. They way I get around that is by putting the good bolt back on and snugging it down. Then, crack the other bolt.

Generally, I can go back to the first bolt and get it loose - thereby, having both bolts loose at the same time. Sometimes, I have to re-tighten and loosen the other side again - maybe do that a couple of times before I can finally get both loose at the same time.
yep , tried that several times with no result.
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Old 06-12-2019, 06:30 PM   #8 (permalink)
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Join Date: Aug 2006
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Current Sled(s): 2007 Dragon 700 ////05' switchback 600
Previous Sled(s): 03 zr 900/ 03 zr 800/99 mach z 800/03 vmax 600/95 vmax 500/
Location: mooseland
Favorite Riding Area: your sister
18-19 Mileage not enough
17-18 Mileage: not enough
16-17 Mileage: not enough
15-16 Mileage: not enough
Age: 5
Riding Since: 1990
Default

Quote:
Originally Posted by too slow View Post
As far as removing the rear axle and idlers...just loosen the tension bolts a good amount, slide the axle assembly back far enough, and unbolt the real axle bolts holding the wheels on the axle....everything should slide out.
perfect thats what i kinda figured.
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Old 06-12-2019, 07:29 PM   #9 (permalink)
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Break out the propane torch and heat the head of the bolt up while doing the alternating tighten loose and from side to side. I know I put those bolts back in with red loctite just so they won't come loose while riding and you need heat to loosen red loctite.
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Old 06-12-2019, 07:37 PM   #10 (permalink)
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Join Date: Sep 2005
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Current Sled(s): 05 600 xcsp 50th
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Location: Ct.
Favorite Riding Area: Ma.
18-19 Mileage not much
15-16 Mileage: Zero
Age: 6
Riding Since: 70 s
Default

Quote:
Originally Posted by ZR 800 efi View Post
yeah its a shaft that runs from rail to rail and has the shock resting on it. Much lik the front suspension bolts that hold the skid to the tunnel , theres a bolt on both sides.

Here i tried retightening the other to try and break the other loose, but no dice.just spins inside the shaft and wont back out.
Can you apply some heat on the frozen shaft bolt area with a propane torch....lock up the side well the bolt comes loose on, and then try shock hitting the wrench/socket on the frozen bolt with a hammer.
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