[Plowthesidewalk]

Okay guys. GT80 has already said he knows the OEM bushing is 1/2" x 11/16" x 1" Long. I measured mine to be 1" long. After finding my SS/18's clutch in my workshop I took some photos of it and the hardware it had holding it on.

Did any of you guys install the retaining spring on the inside frame side of the clutch? The 7/32 x 1 x 16 gauge washer and e-clip go on the outside side of the frame.

If you look down inside the frame you should be able to see the retaining spring (hair pin clip) between the clutch and the side wall of the frame.

 

[CHEVY&SEARS]

Cage Match!!

:sport30: Haha! Either one works but 1 1/8" works better and i'm going to leave mine that long (I cut mine to 1") when I change another busing.

Yes I installed the hairpin clip.

 

[Plowthesidewalk]

:sport30: Haha! Either one works but 1 1/8" works better and i'm going to leave mine that long (I cut mine to 1") when I change another busing.

Yes I installed the hairpin clip.

How did you get the clutch's pivot pin to go an extra 1/8th of an inch? I haven't tried a 1-1/8" long sleeve bearing yet but it doesn't seem like it would work with the retaining pin on the other side.

 

[Plowthesidewalk]

Since some people are operating their tractors in cold weather climates they might want to consider using a Graphite SAE 841 Sleeve Bearing with a temperature range of -30° to 700° F instead of the regular SAE841 Sleeve Bearing with a temperature range of 10° to 220° F.

http://www.mcmaster.com/#9368t161/=po3zcq

http://www.mcmaster.com/#2868t116/=po3yzk

The thing about it is Chevy&Sears is in Florida and GT80 is in New England. Both tractors had worn out sleeve bearings and are about the same age. Who knows how many hours were on each tractor? I am wondering how much of a difference the Hours/Climate issue actually had on each sample sleeve bearing. Maybe you guys can tell how many hours are on your tractors and how close to salt water they are.

Fastenal has the SAE 841 available globally but it is a 1/2" x 11/16" x 1-1/8" version.

http://www.fastenal.com/catalog_pages/2010/10-186.pdf

I think Lobsterbox got his sleeve bearing from Fastenal and they don't stock the Graphite SAE 841 that should be more suitable to the climate in Canada.

In summary, I would possibly try the 9368T161 from McMaster.

 

[Plowthesidewalk]

:lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala:



:fing20::fing20::fing20::fing20::fing20::fing20::fing20::fing20::fing20:



:lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala::lalala:



:bananapow:bananapow:bananapow:bananapow:bananapow:bananapow

 

[GT_80]

I don't remember a hairpin on my clutch... I would have to look. I think the spring clip fell out. Since I have the motor in, it's staying out. no ill effects- I assume thats why the longer bushing works so well- i'm taking up the room for all the spacers and spring I took out

 

[GT_80]

Since some people are operating their tractors in cold weather climates they might want to consider using a Graphite SAE 841 Sleeve Bearing with a temperature range of -30° to 700° F instead of the regular SAE841 Sleeve Bearing with a temperature range of 10° to 220° F.

http://www.mcmaster.com/#9368t161/=po3zcq

http://www.mcmaster.com/#2868t116/=po3yzk

The thing about it is Chevy&Sears is in Florida and GT80 is in New England. Both tractors had worn out sleeve bearings and are about the same age. Who knows how many hours were on each tractor? I am wondering how much of a difference the Hours/Climate issue actually had on each sample sleeve bearing. Maybe you guys can tell how many hours are on your tractors and how close to salt water they are.

Fastenal has the SAE 841 available globally but it is a 1/2" x 11/16" x 1-1/8" version.

http://www.fastenal.com/catalog_pages/2010/10-186.pdf

I think Lobsterbox got his sleeve bearing from Fastenal and they don't stock the Graphite SAE 841 that should be more suitable to the climate in Canada.

In summary, I would possibly try the 9368T161 from McMaster.

I think that would only matter when it has something rotating in it all the time. I have never noticed a stiffer or looser clutch due to temp or weather conditions


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[Plowthesidewalk]

I think that would only matter when it has something rotating in it all the time. I have never noticed a stiffer or looser clutch due to temp or weather conditions


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Interesting. Are you willing to tell how many hours are on your tractor? There is no telling how many times the sleeve bearing has been replaced during the tractor's lifetime.

Another thing I am not certain of is if the Canadian versions of the 1970's Sears tractors were assembled with metric fasteners and metric units of measure. Without doing more research I think Canada adopted the metric system sometime during the 1970's but I am not sure about how much of the metric system they actually used. When Canadians discuss Sears tractors at MTF a lot of us will probably default to thinking the USA standards of measurement will be used. Having access to the Canadian parts list and manuals is not simple to find either.

The USA currently has a lot of products being sold with either metric or standard fasteners. I think Canada does also but I am not sure.

 

[GT_80]

This tractor has unknown hours but judging by the fact that all the texture is worn off the steering wheel and that the lifters are worn enough to sound noticeably loose, I'm betting close to 4000 or more hours. I doubt the bushing has been changed before- Rick got the tractor from the original owner, and it looks like it's never been apart. Most of the bolts I took out broke.


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[Plowthesidewalk]

Thanks for the input GT. I am guessing both tractors in Florida and New England lasted about the same amount of time. When I think about how the material in the bushing might expand and contract under certain operating conditions I thought the bearing's ID might open up enough to accelerate wear. Then again the bearing's ID might contract and cause too tight of a fit.

It would be interesting to have had some sample tractors with different types of bearing material and monitored their performance since the time they were manufactured.

 

[GT_80]

Thanks for the input GT. I am guessing both tractors in Florida and New England lasted about the same amount of time. When I think about how the material in the bushing might expand and contract under certain operating conditions I thought the bearing's ID might open up enough to accelerate wear. Then again the bearing's ID might contract and cause too tight of a fit.

It would be interesting to have had some sample tractors with different types of bearing material and monitored their performance since the time they were manufactured.

I kept my old bushing- ill mail it to you if you're that interested in it lol


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[Plowthesidewalk]

I kept my old bushing- ill mail it to you if you're that interested in it lol


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Really? Will you mail it? LOL! :sidelaugh