Stihl ms 460 Side cover getting excessively hot
- Thread starter Chriscls
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kenton.a.frank
ArboristSite Guru
Sounds like the springs might be getting weak. Or clutch pads are getting worn
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Lots of goop surrounding the clutch cover can cause that also, either inside or outside. It gets packed in there like a rock. Remove the clutch cover and clean/scrape it all out with steel wool.
A guy recently gave me a chainsaw that he said "no longer runs right." The entire inside of the clutch-side housing was packed with a pound of hard mud that had been there for years. It took a chisel, screwdriver and paint scraper to pry it all loose and scrape it out. Imagine what surrounded the clutch.
A guy recently gave me a chainsaw that he said "no longer runs right." The entire inside of the clutch-side housing was packed with a pound of hard mud that had been there for years. It took a chisel, screwdriver and paint scraper to pry it all loose and scrape it out. Imagine what surrounded the clutch.
D
Deleted member 117362
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Yes, of course, but that had to stay in the shop. LOML would have refused to cook dinner that night had she heard what I said as I cleaned that mess up.Did you say
Clutch and shoes get covered in bar oil too, pull the drum and clean everything out
I recently had a guy bring in a 460 that was "getting real hot" on the clutch side. The chain had eaten completely through the rim sprocket and had devoured the needle bearing. It was starting to work on the crankshaft. He said he kept tightening the chain tensioner again and again because he had to get the job done. Finally, it wouldn't tighten up any more and refused to track, so he quit. That saved the crank shaft.
He said things were smokin' pretty good and the noise was deafening, kind of like a cement mixer. Imagine the heat. Gasp!
He said things were smokin' pretty good and the noise was deafening, kind of like a cement mixer. Imagine the heat. Gasp!
Poleman
Addicted to ArboristSite
Yep.....just keep running it till it don’t run no more then bring it in and play like don’t know what happened......
kenton.a.frank
ArboristSite Guru
Did you take the brake dust cover off and clean that area as well? Any chance the brake band is not fully disengaging and causing friction. Friction is obviously being caused by heat or possible air leak in top of cylinder. More than likely not the latter. You can literally start taking the clutch drum, and clutch off as well as work gear and see if it builds heat. If it doesn’t you know it is 1 if 3 things, clutch, drum, or brake band.
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Put up some pics!!
The workshop manual has specs for some of the clutch components. The drum for sure. If the drum or shoes or springs are worn too much the clutch will slip, generating heat.
Sam R
8mm Socket
Sounds like a slippery clutch to me. Either your drum is too worn to let the shoes fully engage - evidenced by a deep band on the inside where the shoes engage.
Worn shoes, bad springs, bad needle cage could conceivably cause this issue as well... Also if your sprocket is very worn chain slippage would cause friction build up
Worn shoes, bad springs, bad needle cage could conceivably cause this issue as well... Also if your sprocket is very worn chain slippage would cause friction build up
Sam R
8mm Socket
How does your clutch sit inside the drum? If the drum is a little warped it could just be rubbing it at idle.
Sam R
8mm Socket
So if the clutch/drum were on the crankshaft do you think they'd make any contact? Bear in mind if your clutch springs are weak they may be engaging a little bit even at idle. Might not be enough to overcome b/c load but enough to really rub on the drum.
Sam R
8mm Socket
One way to check it is just put the clutch on only and let it idle see if the shoes are spreading out and especially if they're staying quite circular.
