Author Topic: Stihl 066 (Read 3998 times)

Weekend_Sawyer · « **on:** December 19, 2002, 06:58:23 am »

I was cleaning my 066 last night and pulled the rim sprocket off, then pulled the outer clutch housing off and there is a set of needle berings in a cage around the end of the shaft.

My question is, should I dab a little grease around these bearings? Currently they are dry.

IndyIan · « **Reply #1 on:** December 19, 2002, 12:54:01 pm »

I'm not an expert but most bearings like grease! I think my husky 372 has a similar clutch set up and there is a hole in the center of the driveshaft, this is where the manual says to squirt grease in with my disposible greaser. I believe it lubes the same bearings. That could be totally wrong for your saw, I would try and find an owner's manual for it and do what it says.
Good luck,
Ian

ADfields · « **Reply #2 on:** December 19, 2002, 02:50:25 pm »

Needs some form of lube on it!

Tillaway · « **Reply #3 on:** December 19, 2002, 04:28:40 pm »

Check for damage first, clean them up and grease them. They are a normal wear part and not expensive so feel free to replace if there are any doubts.

Weekend_Sawyer · « **Reply #4 on:** December 20, 2002, 11:18:30 am »

Thanks guys. I was surprized to find them dry. They look pretty good. I will dab some grease on them and re assemble.
Got to cut some firewood out of my scrap pile this weekend.

Everyone have a Great weekend and a fun holiday.

Weekend_Sawyer · « **Reply #5 on:** January 06, 2003, 02:25:36 pm »

Well I put just a little too much grease in there. The clutch did not slip, It cut just fine, but when I took it down for cleaning and checked the bearings, they looked good but grease had slung all over the inside of the housing. WD-40 cleande it out and I put much less grease in there this time.

I also started using a blow nozzle on my compressor. Man that works! Maks cleaning the saws much easier.

Jon

RMay · « **Reply #6 on:** January 06, 2003, 06:17:32 pm »

Weekend Sawer use your chain saw bar grease gun to grease the sprooket bearing . Husqvarna recommends greasing once a week with high quality bearing grease .

Mr._Logical · « **Reply #7 on:** January 30, 2003, 06:22:18 pm »

I'm Stihl trained mechanic. There is an orange tube of lithium grease recommended for the needle bearing you are talking about. See your authorized Stihl Dealer. Same grease is applied on connecting rod when or if you ever replace your piston and Cylinder. Good luck. This needle bearing should last a very long time. Not very long if it gets dry!!!

Weekend_Sawyer · « **Reply #8 on:** January 31, 2003, 04:44:56 am »

Welcome to the board Mr._Logical. This is a fun place to hang out, lots of good information too!

I will find out about that grease.

Weekend_Sawyer · « **Reply #9 on:** January 31, 2003, 04:50:51 am »

Do you know how often this grease needs to be applied?
I'm guessing whenever it looks like it needs it is the answer.

Minnesota_boy · « **Reply #10 on:** January 31, 2003, 05:42:00 pm »

That bearing only has to turn when the saw is idling. If the chain is turning the bearing is not. Grease as you see fit. I wear out the sprockets before I wear out that ungreased bearing.

Mr._Logical · « **Reply #11 on:** January 31, 2003, 06:05:05 pm »

We recommend to add the lithium grease about as often as you replace a completely worn out chain as a good guide. It's back to an ounce of prevention is worth a pound of cure. The worst part about this little bearing is it will shut you down completely for the day. At the worst possible time. It is however not a common problem of failure.

Weekend_Sawyer · « **Reply #12 on:** February 03, 2003, 04:07:50 am »

Is this bearing riding directoy on the end of the crank? or is that shaft mated to the crank. What I am getting at is if the bearing fails am I looking at resurfacing or replacing the crank or just a coupler.

Oregon_Rob · « **Reply #13 on:** February 03, 2003, 04:37:48 am »

If you go to stihl's web site, you can order a manual for your saw and it is Free.

I did that for my little 009.

Weekend_Sawyer · « **Reply #14 on:** February 03, 2003, 06:28:57 am »

Thanks Rob, I just did it.

Kevin · « **Reply #15 on:** February 03, 2003, 09:23:22 am »

Jon ;
The caged needle roller bearing is located between the clutch drum hub and the shaft.
The bearing uses the shaft as the inner race and the clutch drum hub as the outer race.
Bearing failure is usually due to storing the saw after use in wet conditions.
A high temperature water resistant grease is recommended.

Mr._Logical · « **Reply #16 on:** February 03, 2003, 05:18:24 pm »

This bearing rides on the end of the Crankshaft. The good thing is when I have seen a failure of this bearing it has never damaged the shaft.

(Not to say it would be impossible to do.)

Bro. Noble · « **Reply #17 on:** February 07, 2003, 07:24:27 am »

Thanks for this thread guys.

Got to noticing on my 044 that when I put the chain break on the engine would bog down. My first thought was that I needed to set up the idle speed. Then I thought , no , that doesn't make sense-----especially after I noticed that the chain kept running at idle speed.

I havn't looked at it yet (just put it down and used another saw) but I bet I'll find a bad or dry bearing.

Noble

Stephen · « **Reply #18 on:** February 07, 2003, 08:15:08 am »

Noble,
My first thought would be a broken clutch spring.

Stephen

P.S. I was once looking for a small spring for the drum switch off my WoodMizer. A local farm equipment dealer looked at the spring, said "diesel-fitter" and sold me a few, which I think were Stihl clutch springs. They did fit, and are still on the mill.

Mr._Logical · « **Reply #19 on:** February 08, 2003, 01:17:38 pm »

Noble,

You could be right about this bearing. I just had a saw in the shop that ran fine but would stall when the brake was applied. I also thought orriginally that at idle speed the chain kept running that I had a weak spring in the clutch until I applied the brake and the saw stalled, I knew there was a problem related to this bearing. Upon pulling it apart the bearing cage had fused everthing together. replaced the bearing loaded with the lithium grease and back in bussiness.

News:

Author Topic: Stihl 066 (Read 3998 times)