|
|
Post by dancbx on Sept 19, 2014 19:40:41 GMT -5
Has anyone ever pulled a saw apart, in this case an 1130G to find the crankshaft rubbing against the engine housing? I picked up the saw (used as an icesaw the last years) then it sat supposedly for 2-3 years, it had 180 pis compression but the piston looked in rough shape so I pulled it apart. The cylinder wasn't as bad, perhaps even salvageble in a pinch, but I rotated the flywheel and heard a scraping noise, to see the crank weight very lightly scraping the housing.It is on the exhaust side. WTF? Any ideas? how to I get back to where it needs to be? I never went beyond rings and cylinder swaps in my other saws.
Thanks Dan
|
|
|
|
Post by onlyhomelites on Sept 20, 2014 19:34:50 GMT -5
I don't know how it's possible, but it sounds like the clutch side bearing was driven too far onto the crankshaft! The bearing should have a groove in the outer edge and there should be two screws with washers that fit into that groove holding the bearing in place on the clutch side...if that all looks good, it almost has to be the bearing is seated too far. The only way to fix that is to get the crank out of the saw and press the bearing off a bit. But if you have to do that, I think I''d replace the bearing at the same time and check the crank real close to make sure it isn't distorted somehow.
|
|
|
|
Post by dancbx on Sept 21, 2014 8:14:32 GMT -5
I don't know how it's possible, but it sounds like the clutch side bearing was driven too far onto the crankshaft! The bearing should have a groove in the outer edge and there should be two screws with washers that fit into that groove holding the bearing in place on the clutch side...if that all looks good, it almost has to be the bearing is seated too far. The only way to fix that is to get the crank out of the saw and press the bearing off a bit. But if you have to do that, I think I''d replace the bearing at the same time and check the crank real close to make sure it isn't distorted somehow. Thanks for the information, I spoke with an old dealer as well, he thought the crankshaft retaining clip behind the flywheel is gone/damaged? I will have to tear into it it may be a while before I get to it now.... Thanks Dan |
|
|
|
Post by lesorubcheek on Sept 21, 2014 20:44:06 GMT -5
Yes, the 58190 bearing that holds the crank's position is on the flywheel side. There's a snap ring that holds the bearing on the crank, and the slot in the bearing allows the two screws/washers to hold the bearing's position in the bore of the crank housing. If either the snap ring missing, or the screws/washers are missing or loose, the crank can shift and rub the insides of the crankcase housing.
Dan
|
|
|
|
Post by dancbx on Sept 22, 2014 19:33:25 GMT -5
thanks alot, I will let everyone know when I get into it.
Dan
|
|
|
|
Post by dancbx on Sept 24, 2014 12:21:48 GMT -5
Yes, the 58190 bearing that holds the crank's position is on the flywheel side. There's a snap ring that holds the bearing on the crank, and the slot in the bearing allows the two screws/washers to hold the bearing's position in the bore of the crank housing. If either the snap ring missing, or the screws/washers are missing or loose, the crank can shift and rub the insides of the crankcase housing. Dan Peeked into the crankcase, screws are there and "appear" meaning not messed with from factory. I was able to slide feeler gauges down between bearing and crank weights.... I am hoping its just the retainer clip... and I can just tap the crank over:) |
|
