Stihl 066

[woodmills1]

I didn't sense no slammin, I just wanted to share how teachin is a bit different, in a way it is a years worth of experience times the number of years.  everytime we changed books or curriculum I would feel like a novice the first year, a little better the second, and by the third I would be answering the questions before they were asked :D

[Weekend_Sawyer]

sooo, I was going to post a question about oiling the needle bearings in my clutch but thought I'd search the forum just to see if the info was allready out there, when, lo, I stumble across this old post where I had asked the very question 9 years ago! As I was reading through it I thought hmm, I'm having to relearn things I allready learned before but forgot. smiley_goofy_face  Then reading on I see a conversation between Bro Noble and MarkM about almost the same thing. I miss them both.

As with alot of things in life, there is no moral to this story, it just kindof made me go hummmm.
Atleast I got my question answered... again.

... someone hand me my crayon, I'm going to make a note of this.
Jon

[Al_Smith]

Most people do not grease them,just a fact .Seldom does one fail .Keep in mind though if they do they can break a clutch segment and in extreme conditions break a crankshaft from running excentric .In addition running excentric can knock out a bearing which will take the seal with it .

I've seen broken  clutchs and clutch drums worn with a radius in them from a bad bearing .They only cost a few bucks and it's worth replacing if it gets wobbley .

Myself if I think about I'll  drop a little bar lube oil on them .

Oh Lawdy I had a Stihl a few years back they ran with no bearing .Broke two out of three clutch segments and about melted all the plastic off the inner cover  .Tree trimmers ,gotta love them . ;)

[acco1840]

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

I had the same problem. I switched to using bar oil on the bearing every week. never had any more problems.

[joe_indi]

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.

Jon, all you need to do is remove the needle bearing from the crank shaft, apply a very(very) thin film of multipurpose grease onto the crankshaft, fit the needle bearing, apply a very(very) tin film of grease on the needles and refit the clutch drum and sprocket and stuff. If you use the saw everyday all day long, do the greasing every evening.Otherwise, once a week is fine.
But, never never put in too much of grease on the needle bearing or any other clutch component.If the clutch parts become greasy the clutch will wear out faster because the fine metal dust from the worn parts of the clutch faces will not be blown off.
Instead it gets retained like a grinding paste which acts like an abrasive.
The lazy (fast) way of lubing the needle is to have the clutch side of the saw facing upwards and to pour a few drops of SAE 140 gear oil onto the e-clip and sprocket washer.You then move the drum up and down and also rotate it so that the oil seeps into the needles.This method is good in the field where you dont want to lose the E-clip or washer in the bushes.
A more lazy way is to mix some graphite(dry lubricant) into some grease.Use this to lube the needles.Even if the grease is thrown off the graphite ensures that the needles and crankshaft has something in between to prevent wear.

Joe

[simonmeridew]

I've seen this bearing with a plastic or nylon cage holding the rollers. This tells me that it doesn't get very hot or much wear. Don't put much grease on it, just a very thin coat. A lot will sling around and might affect the clutch operation.
simonmeridew

[HolmenTree]

Seeing this topic is about a Stihl 066 clutch drum bearing I thought I'd chip in some advice. I own a 066 that I bought new in 1992, just retired it a few years ago. I never logged 8 hrs a day with it but with my tree service it did get a hour of work guaranteed each day. I operate 4 different size saws each day depending on what the job calls for.
So lets say 20 hrs a month ,240 hrs a year. So in 17 years thats 4080 hrs the 066 has on it right now.
I have never had the cylinder off this saw and have only greased the clutch drum bearing approximate 3 times in those 17 years.

What is the secret in keeping this saw running carefree for this long?......sharp chain, never run the saw right out of gas to the last drop.
Most important thing, its one of the most durable saws out there....... a Stihl 066. :D

[Just Me]

 I had a huge oak to cut up for firewood and it was too much for my 357 so my buddy stopped over with his 066. I want one!

How many saws should a carpenter have!

Larry

[Weekend_Sawyer]

As many as he wants  8)