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Post by summit1966 on May 11, 2016 8:00:31 GMT -5
Hi all, In short my Renegade 500 had piston slap and I was really getting sick of that clanking noise coming from the front cylinder. I decided to the get top end rebuilt new pistons and machined cylinders, I got the bike rebuilt be a reputable guy who builds race bikes. After doing 10 hours on the new top end I decided to replace oil and oil filter in the process of doing this I noticed black plastic particles in the oil filter(chain guides) which I never had before the rebuild and also pulled out 1 big piece of plastic from the sump. I bought my bike back to where it was rebuild and thank god the re builder took responsibility. In the end I appreciate his honesty and I suppose mistakes happen. Picture of the oil filter and plastic will be uploaded shortly.
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Post by Gene on May 11, 2016 9:31:38 GMT -5
Looks to me like when your mechanic installed the fixed side of the guide he missed the little part that's supposed to "hook" to the head to allow it to remain suspended . If its not hooked it may appear good but rotation will cause it to become wedged between the chain & the casting eventually grinding it into oblivion.
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Post by Gene on May 11, 2016 16:26:09 GMT -5
If that little tab ( at the arrow ) isn't hooked , the entire guide can appear normal but get pulled between the chain & inside of the casting .
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Post by Skioutty on May 11, 2016 19:16:01 GMT -5
Not necessarily to summit1966's issue, but how involved is it to replace just the chains and guides on an otherwise good motor? Or how expensive to have it done?
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Post by summit1966 on May 11, 2016 20:37:47 GMT -5
He didn't replace the guides as they where in good condition. It must be something to do with tensioning.
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Post by Gene on May 12, 2016 1:35:45 GMT -5
He didn't replace the guides as they where in good condition. It must be something to do with tensioning. Possible ^ If the tang in the spring wasn't engaged correctly in the plastic cap it could cause excessive pressure on the moveable guide . Which guide is in the pic you posted ?
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Post by Gene on May 12, 2016 3:27:04 GMT -5
Not necessarily to summit1966's issue, but how involved is it to replace just the chains and guides on an otherwise good motor? Or how expensive to have it done? It's a lot of time . To get at the fixed guides requires the heads to be removed . To get at the moveable ones the side covers have to come off too . Some say it can be done without removing the motor but I did mine while it was on the bench .
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Post by summit1966 on May 12, 2016 4:14:51 GMT -5
Apparently it was the rear chain guide on the rear cylinder.
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Post by Gene on May 12, 2016 5:20:39 GMT -5
Apparently it was the rear chain guide on the rear cylinder. I'm pretty sure that's the one that's supposed to hang on the casting like I mentioned .
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Post by Gene on May 12, 2016 5:26:33 GMT -5
Apparently it was the rear chain guide on the rear cylinder. If you weren't half a world away I'd say bring her over & we'll get er done !
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Post by summit1966 on May 12, 2016 5:56:01 GMT -5
Thanks Gene, I wish I had that support around hear. But fact is these bikes aren't that big here and quad biking in general isn't either due to the restrictions on riding on public land. Luckily the re builder took responsibility and is willing to fix it. I just hope my oil screen is not plugged up at the bottom of the motor. I asked the Re-builder and he said there wasn't enough wear to cause it to block up he said about 1/10th of the guide was worn off.
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Post by Gene on May 12, 2016 6:18:02 GMT -5
I hope he's right too . A plugged screen will starve your oil pump & ruin the motor.
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Post by summit1966 on May 12, 2016 7:50:52 GMT -5
Is there anyway of checking if the oil pump is starving? Checking the oil pressure some how?
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Post by Gene on May 12, 2016 8:23:23 GMT -5
Is there anyway of checking if the oil pump is starving? Checking the oil pressure some how? That , I can't tell you my friend . Might want to ask Shortmags on the other site.
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Post by Gene on May 12, 2016 8:34:21 GMT -5
I can't imagine it would be all that difficult to plumb in a standard automotive type gauge. I have never done this to a wheeler though.
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