Sitrex Tedder Slip Clutch

lastcowboy32

Well-known Member
So...

We have a two star Sitrex tedder. It has a slip clutch built into the PTO shaft. It's one of those "captive spring loaded bullets in a cylindrical cage" thingies.

I greased it at the beginning of the season. And...it's been way, way too easy to activate; making it so that we're tedding in the lowest gear the tractor has. Some hay, we can't even tedd at all.

This came to a head with some clover second cut...which was soooo beautiful and thick. But way too thick for the tedder. We got it done... but we lost some of it, due to the delay.

Has anybody taken one of these slip clutches apart?

Should I have used something like corn head grease on it, for that thickness factor? Should I not have greased it at all? Should I have put... like... one squirt of grease in it?

Any suggestions?

I was thinking of taking it apart tonight.
 
Tedder slip clutches are very light weight and easily damaged by too much HP. I have a neighbor that tried to take his apart and repair it.
He is a really good mechanic and he just gave up and borrowed the shaft and clutch off of one of my tedders. I'd say one squirt is plenty,
once it starts slipping it may be too late. Hard to disassemble without special tools. Unfortunately a new drive shaft and clutch is over
$200.
 

We run ours with a NH T4030; which IS about 62 PTO horsepower

I'm trying to reason with myself as to why the horsepower would matter. Once it slips, it slips.

But... C'est la vie... maybe it's better to just pay for a new clutch every five years or so; as opposed to replace one of the drive or ring gears in a star, or a drive shaft, or the main drive gear, etc...
 
We had the same issue on a tedder we had. Our Agco dealer had new bullets and the springs. Said they were the same as a Gleaner combine?
Assemble the new parts and place a hose clamp around them in about the middle or a little off to the side then slide outer housing over it and
knock the clamp off as it goes together. You can also take it apart and drop some flat washers or lock washers behing the springs making them
a little stiffer. Tom
 
Can you just push some solvent through like the grease to wash it out some so it will be stiffer? Or soak it in a solvent then slip it some to squeeze/work the grease out of it. On the old Gleaner we just never greased them not even at the start of the season.
 

Local dealer had the whole end assembly with the torque limiter (what I called the slip clutch) plus a new PTO cross...

$345.45

Jen Sales had the whole PTO with the torque limiter for 250... but our dealer had the part on the shelf, and I already drove there.

If I had to rebuild one of these, I would see if I could beg, borrow or steal a piston ring compressor to catch the spring loaded dogs during disassembly and assembly.

Or just let the little buggers fly and be free!
 

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