Author Topic: Husqvarna K960 concrete saw.  (Read 495 times)

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Offline 3000 FPS

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Re: Husqvarna K960 concrete saw.
« Reply #20 on: November 02, 2015, 11:24:25 pm »
Main crank bearings look shot!!! Hahaha

Yea that was on the PTO side and I could feel sideways movement in it.   This one is a 14" cut off wheel.
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Offline Cut4fun .

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Re: Husqvarna K960 concrete saw.
« Reply #21 on: November 03, 2015, 12:32:15 pm »
Merged so it moves back to Oct 30 now
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Offline SawTroll

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Re: Husqvarna K960 concrete saw.
« Reply #22 on: November 03, 2015, 01:11:33 pm »
Sounds like a 90cc strato motor is already in their stable....

Has been for quite some time, but likely too heavy and bulky to be suitable for chainsaw use?

Offline aclarke

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Re: Husqvarna K960 concrete saw.
« Reply #23 on: November 03, 2015, 02:18:05 pm »
Likely need a saw specific crankcase but seems like it would be cost effective to use  common parts, ie. Crank, piston, etc

Offline 3000 FPS

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Re: Husqvarna K960 concrete saw.
« Reply #24 on: November 03, 2015, 07:29:25 pm »
Sounds like a 90cc strato motor is already in their stable....

Has been for quite some time, but likely too heavy and bulky to be suitable for chainsaw use?

I agree, just the air filter set up alone is really bulky but for concrete dust is works pretty good.   
PP 505, 475, 445.

Offline 3000 FPS

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Re: Husqvarna K960 concrete saw.
« Reply #25 on: November 14, 2015, 10:56:17 pm »
Got the new bearings pressed into the case today.  Put in the new crank and gasket and put the piston with new bearing on.    After getting the new crank and comparing it to the old one I am glad I got it.   Plus it looked a little discolored at the big end.  They were suppose to send two rings but I only recieved one so have to call them Monday.   So far the saw is going back together very easy.   The crank spins nice and free.
PP 505, 475, 445.

Offline dynodave

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Re: Husqvarna K960 concrete saw.
« Reply #26 on: November 19, 2015, 01:47:23 pm »
If you've still got this ripped apart, Ive got a question about the original crank.....
On my Partner K700 (which IMO is the origin of the later husky chop saws) and my friends 272K, both cranks get oil mist to the clutch bearing from inside the crankcase, unlike the regular 272 wood saw which you can shoot oil/grease from under the clutch cover.
I discovered this since I was to rebuild the chop saw with a 272xp core provided as parts. I then discovered the cranks are not the same and the partner replacement had NO provision at all ...for grease on the clutch bearing except manually from the outside by dismantling the belt clutch.

If you look at the side profile of your husky 960 and a old partner the styling is unmistakeable. The old 272k and 3120K are of modified chainsaw origin with an unused oil tank. The old husky owned partners are a chopsaw dedicated design without a chainsaw oil compartment.
Thanks
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Offline 3000 FPS

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Re: Husqvarna K960 concrete saw.
« Reply #27 on: November 19, 2015, 10:39:15 pm »
I have worked on some partner K950's that look just like the Huskys.   What is it on the crank that I am suppose to see that allows for this mist lubrication of the clutch bearing.  I still have the original crank and I have not put the cylinder back on yet.
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Offline dynodave

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Re: Husqvarna K960 concrete saw.
« Reply #28 on: November 20, 2015, 11:28:02 am »
If I look at both cranks there is a little hole in line with the clutch bearing. The 272xp crank has the drilled passage that leads to the end of the crank, while the K272 crank is drilled to the inside/center of the crank. The chop saw crankcase pressure should blow away the grit AND lube the bearing.

On my K700 partner the original crank was the same as the K272, but the new aftermarket crank had no provision for oil/grease at all.  So I'm curious how the K960 crank is finished and if there is any provision for clutch bearing lube. My friend had bought a K960 and my rebuild of his husky K272 was for his spare/backup. 
thanks
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Offline 3000 FPS

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Re: Husqvarna K960 concrete saw.
« Reply #29 on: November 20, 2015, 01:37:55 pm »
Ok I looked at the crank that I removed from the saw and it does have a small hole where the clutch bearing sits.   The new crank shaft I ordered and put in the saw also has that same hole in the same location.    I took a guitar string and shoved it thru the hole and it does comes out through the center of the crank shaft and counter weight.   I really do not know if I like that design.  The crank case was pretty clean when I took it apart so I guess it must work.
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