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TD- 9B engine clutch problem


Greg23322
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Morning more experienced folks than me,

I have an old TD9B crawler that I inherited. Recently when in use the clutch stopped snapping over. Trouble shot for awhile and finally ended up taking the whole thing out. All was in good shape. Got a new shaft and bearing and coupling as needed and put everything back together. All was working great. Used it about an hour. And it started slipping. So I tightened adjustment ring 3 notches. Worked to snap over hard but did snap over. Went back to work and it will not snap over again now. Came back in and loosened adjustment ring and I tried to snap over before putting things back together and won't do it for me.

 

I'm really not a mechanic so I don't have any clue what in really doing, within reason. 

Question 1) do I need to pull the whole assembly out again because of the heat generated while being used it seized something up? (Really don't want to if I can help it was a hard tough job with huge learning curves.)

 

Question 2) im tightening the ring by going counter clockwise if you are sitting on the machine facing forward like to drive, and counter to loose it?

Can I do this to much?

Thanks for the help I look forward to hearing some words of wisdom for help.

 

 

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Without seeing what you actually took out, the experience I have had with erratic clutch operation is that they are simply dirty. All the dirt, grease and clutch dust is packed by centrifugal force into the I.D. of the drive ring. When you tap the adjustment ring, some of that rubbish falls between the driving members and gives a false impression of tight clutch adjustment, for a while. It takes a long time to get that full (many years), but less if the tractor was run in deep water. 
  Another possibility is the disc segments have a ridge on their outer perimeter from normal wear, and the segments can move around during adjustment and cause the same false adjustment feel that the dirt does. You can just grind the ridge off (or rub them on rough concrete) and then they won’t give any more trouble.

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So if you had the assemble out what did things look like? Flywheel and pressure plate were flat and the disk had good lining on it?

It has been 40 years since the last clutch I did on a 9B but as I recall you had to pull the motor as the hole in the deck is not large enough to remove the pressure plate assembly out of. If I was going to that amount of work I would resurface the flywheel and pressure plate to make sure they are flat. Clutch disk would be new or relined.

When you say it will not snap over now do you mean you can pull clutch back and it will not snap or you can not pull the clutch back all the way and it will not snap over. First scenario clutch is not adjusted tight enough and second clutch is to tight. I am assuming you put the lock back in to hold the clutch where you set it. 

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Louie is right, tighten the clutch is clockwise.

DWF

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8 hours ago, IHC_1470 said:

So if you had the assemble out what did things look like? Flywheel and pressure plate were flat and the disk had good lining on it?

It has been 40 years since the last clutch I did on a 9B but as I recall you had to pull the motor as the hole in t deck is not large enough to remove the pressure plate assembly out of. If I was going to that amount of work I would resurface the flywheel and pressure plate to make sure they are flat. Clutch disk would be new or relined.he

When you say it will not snap over now do you mean you can pull clutch back and it will not snap or you can not pull the clutch back all the way and it will not snap over. First scenario clutch is not adjusted tight enough and second clutch is to tight. I am assuming you put the lock back in to hold the clutch where you set it. 

The clutch clears the opening, the flywheel does not, if you are game the flywheel will come out with some grinding on the case, not something I would do but it is an option.

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Thanks Louie. As I said it was a very long time ago. I do recall that 9B came in with a final out and by the time it was going back together all that was left in the shop was the tracks. When it came to the clutch the flywheel was far from flat. I know I pulled the engine to get to the flywheel and when I drained the antifreeze there was oil in it. Oil cooler was bad. Interesting what one remembers and also forgets. I have long since forgotten how to pull steering clutches. 😝

It was a very expensive repair for the customer. 

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