help with a 6 finger clutch

[Turbo]

I have a new 2008-09 284 Jinma and would like some adjustment info on the 6 finger clutch witch this tractor has, but my manual show the 3 finger adjusment.., and my parts book will show the 6 finger but no info...
any body have these measurements?

 

[Affordable]

Are you adjusting the main clutch or the pto ? Look at the clutch 3-of the fingers have adjusting bolts and nuts,3-do not the measurements are the same as a 3-finger,1-1/2" free play in the pedal,the 3-main clutch fingers should be a 1/8" from the throw out bearing

Tommy
Affordable Tractor Sales
"Your Jinma Parts Superstore"
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[Turbo]

Tommy: I didn't plan on adjusting any thing other that the T-bearing distance.
I just wanted to make sure that the measurement between the main 3 fingers and the PTO 3 fingers were at there proper distance from each other, or do you think I can trust the bench set up done at the manufacture before they install the clutch pack as bing right? Have you found the clutch packs out of adjustment? I have only adjusted the from the outside throw to the t-bearing clearance ,and readjusted the safety switch from bing hit first before the PTO stop...

Thanks for the reply.... I am an aircraft technician , and in my field if I don't have a rule for it or a measurement I get nervis....

 

[greg_g]

any body have these measurements?

You can't trust the clutch to be set up by the manufacturer. Reputable dealers do the alignment before bolting the two halves of the tractor together. Crate tractor buyers must do it themselves.

Assuming we have the same 6 finger clutchpack - I have the measurements. But it would help to know why you think it needs adjustment in the first place. And all six fingers can in fact be "adjusted" by the way. But the three you can't see are done as part of the initial stack height adjustment procedure done during assembly. Since those three are situated back on the flywheel side (as opposed to the throwout bearing side), it's kinda hard to "adjust" them through the inspection window.

Again assuming we have the same clutchpack, basically what you want to see through there is

• the three main drive fingers parked 2.5mm away from the TOB face. For proper bearing wear, all three fingers must be aligned so as to be equidistant from the face.
• The three PTO fingers resting 6mm behind them, or 8.5mm from the TOB. Also aligned to be equidistant (bolts by the flywheel).

But these numbers don't tell the whole story. They're technically achieved during the bench alignment, as part of the 101.5mm stack height and finger alignment procedure. Once installed on the tractor, the external pull rod is adjusted to obtain the final 2.5mm TOB gap.

//greg//

 

[Affordable]

Greg,How does a Reputable dealer do that ? split a new tractor to adjust a 6-finger clutch to check the adjustment(I bet your not going to find many doing that ).Not many of the Jinmas came with the 6-finger,I do keep them in stock and believe you can adjust all 6-fingers thru the inspection cover,I will confirm that today.If your PTO is not grinding when you try to engage it you are prob.OK anyway on the PTO.I have found that most of the 3-finger clutchs are out of adjustment from the factory,Foton 25hp used alot of the 6-finger clutchs

Tommy
Affordable Tractor Sales Co
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[2rex2]

JUst replaced mine and used 2.6 inch. worked just fine, then looked through the side cover to adjust free play. terry I/A

 

[greg_g]

Greg,How does a Reputable dealer do that ? split a new tractor to adjust a 6-finger clutch to check the adjustment(I bet your not going to find many doing that ).Not many of the Jinmas came with the 6-finger,I do keep them in stock and believe you can adjust all 6-fingers thru the inspection cover,I will confirm that today.If your PTO is not grinding when you try to engage it you are prob.OK anyway on the PTO.I have found that most of the 3-finger clutchs are out of adjustment from the factory,Foton 25hp used alot of the 6-finger clutchs

Tommy
Affordable Tractor Sales Co
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

There are so many contradictions in that paragraph, I don't know where to start. So I guess is will have to be with an admission that I thought you received crated tractors - and assembled them yourself. If not, I have to rethink the whole concept of what constitutes a "reputable dealer"

//greg//

 

[Affordable]

I do,and have seen hundreds more than you " Thats a Fact ", you said you have to stack adjust a 6-finger clutch and said that Reputable dealers should do that, I was just pointing out if thats how you have to adjust it according to you how would a reputable dealer do it on each crated tractor(without splitting it ) ? We adjust every 3-finger dual stage clutch on each tractor that we assemble, how many have you done ? Really Done besides your own.

Tommy
Affordable Tractor Sales Co.
"Your Jinma Parts Superstore "
Home of compact Jinma, Foton, and Koyker Tractors and Parts, Wood Chippers, Backhoes - Affordable Tractor Sales Company

 

[Turbo]

You can't trust the clutch to be set up by the manufacturer. Reputable dealers do the alignment before bolting the two halves of the tractor together. Crate tractor buyers must do it themselves.

Assuming we have the same 6 finger clutch pack - I have the measurements. But it would help to know why you think it needs adjustment in the first place. And all six fingers can in fact be "adjusted" by the way. But the three you can't see are done as part of the initial stack height adjustment procedure done during assembly. Since those three are situated back on the flywheel side (as opposed to the throwout bearing side), it's kinda hard to "adjust" them through the inspection window.

Again assuming we have the same clutch pack, basically what you want to see through there is

• the three main drive fingers parked 2.5mm away from the TOB face. For proper bearing wear, all three fingers must be aligned so as to be equidistant from the face.
• The three PTO fingers resting 6mm behind them, or 8.5mm from the TOB. Also aligned to be equidistant (bolts by the flywheel).

But these numbers don't tell the whole story. They're technically achieved during the bench alignment, as part of the 101.5mm stack height and finger alignment procedure. Once installed on the tractor, the external pull rod is adjusted to obtain the final 2.5mm TOB gap.

//greg//

OK Greg let me get this straight, your first sentence you say not to trust the manufacture of the clutch pack then your next statement your asking me why do I think it needs adjustment? doesn't the first sentence answer that?

trust me it is a 6 finger clutch pack, are there more than one kind of 6 finger clutch pack for Jinma 284?
since I did buy a crated tractor, your saying I have to split the tractor to make sure the clutch is adjusted right? you know to be reputable and all..lol
joking aside.....

if mesurements are techniiclly achieved during the bench alignment, and that algnment can be trusted than all that's needed is the TOB adjustment and total throw adjustment stop..

 

[greg_g]

OK Greg let me get this straight, your first sentence you say not to trust the manufacture of the clutch pack then your next statement your asking me why do I think it needs adjustment? doesn't the first sentence answer that?

No. The path to the customer is typically manufacturer>dealer>customer. From my experience, it's the dealer (who assembles the tractor) that is responsible for ensuring the clutch is adjusted properly prior to sale. When a customer elects to go the crate tractor route instead, then the responsibility falls to him/her. I now know into which case you fall. So having assembled your own crate tractor -yes. If you want to be absolutely sure - the tractor may have to be split. It just depends upon how many of the adjustment points you can reach through the inspection ports.

I don't know if there's "more than one kind of 6 finger clutch pack for Jinma 284", my guess is no. But I do know that there is more than one kind/size of six finger clutchpack. Mine is a nine-incher in a TaiShan 354, which is why I made that qualification earlier. And based upon what little I can see in your photo, I'm beginning to doubt we have the same clutchpack.

if mesurements are techniiclly achieved during the bench alignment, and that algnment can be trusted than all that's needed is the TOB adjustment and total throw adjustment stop.

That is correct - the qualifier being that you have confidence your dealer actually did that, or if it was simply slapped together straight outa the crate.

//greg//