Help... cannot get input shaft back into clutch...

[Kenonf]

I have split my L4200DT to fix a sticking input shaft and now I cannot get it back together. How do you do it? It gets to within an about an inch and stops cold.
Any suggestions, spent 4 hours trying today to get it together and no luck.

 

[kevinj]

I hope you are not putting it back together looking like that!

 

[dex3361]

I have split my L4200DT to fix a sticking input shaft and now I cannot get it back together. How do you do it? It gets to within an about an inch and stops cold.
Any suggestions, spent 4 hours trying today to get it together and no luck.

Did you use a clutch alignment tool? The hassle with dual clutch pack is you have to get the splines to line up on both discs. The alignment tool should be splines like the trans and pto shafts. When you get the discs line up to match the splines bring the two halves together and when you meet resistance do not force it put a wrench on the crank bolt on the other end of the engine(make sure the fuel stop lever is wired in the off position so the engine does not fire off, not likely but could happen) and turn it every so slowly till the splines line up and then you should be able to slide it together. It has been spline alignment on every tractor that I have worked on that was causing grief.

 

[Kenonf]

Yeah I wire brushed it down and re-greased it, looks all shiny and new. Those were the before pictures.

I guess the alignment tool is the way to go, thought that since I did not separate the clutch I could get by with out one.
Ken

 

[Soundguy]

if a mechanical pto.. you can spin the pto instead of the crank too..

 

[Kenonf]

I tried that and the pto shaft would not spin it, looks like I spin the engine.
Ken

 

[Soundguy]

pto shaft won't spin? i'd get that loked at..

 

[KennyV]

There is a break on the pto shaft ... it won't turn... but the engine will. you can bump the starter IF you have the fuel solenoid blocked OFF...
You should not need the alignment tool if you didn't move the clutch disks or pressure plate. . KennyV

 

[Kenonf]

The PTO shaft will turn the smaller input shaft but not the bigger one, so that it will mess up the shafts alignment with each other.
And I did not move the clutch disks or pressure plate, so this is just a twist and push trial and error type of deal? oh the wife is going to be grumpy.
Ken

 

[Soundguy]

pto brake on a dual cluth machine? wow... I have seen plenty on ind pto machines.. just not the plain live ones.

this one an electric over hyd clutch or soemthing?

 

[KennyV]

Missed that this was a DT ... no brake on the pto on DT's...
Push and bounce around, it will find it's way into the splines... I have good luck using a light coat of anti seize, don't pinch your fingers between the housings ...

 

[Chilly807]

Odd that the PTO shaft won't turn independently of the main drive spline. Which end of the tractor are you moving to re-engage the shafts? This will sound dumb, but make sure both the PTO and transmission are in neutral. I agree that one set of splines will engage, then the second might not unless the shaft gets turned slightly. Does the clutch have to be depressed to allow it to come together? Just guessing on that one. If so, it's possible that you DO have both shafts started in the holes, but the clutch won't allow the cases to come together until it's depressed. I've never done this job myself.

Sean

 

[Kenonf]

Well after day two, still no luck. The larger spline is for the drive and smaller is the pto. I can get the drive to engage first but then have no way to align the pto spline, and no way to stop it from moving. Any more ideas out there?
Thanks
Ken

 

[Chilly807]

If the splines are butting end to end, you can engage the PTO lever and try turning the stub shaft at the back of the tractor. There is probably about a 4:1 step up in gearing from the stub to the input shaft, so it may turn fairly hard. I'm guessing your engine speed at 540 PTO rpm is about 2200? If you can get it to turn, keep some pressure in the "together direction" on the input shaft and turn the stub at the same time. If I get a chance I'll check the workshop manual for my L3400 and see what it says, if anything.

Sean

 

[Kenonf]

Well the PTO requires hydraulic pressure to engage, When I put a ratchet on the end I can stop the input shaft with no effort. I am sure that pressure in the "together direction" will stop it...
Looked in WSM and say no further info to assemble clutch, just put together.
Thanks,
Ken

 

[Chilly807]

Yeah.. I was hoping yours wasn't hydraulically controlled. Mine is mechanical.

Sean

 

[94BULLITT]

Did you take the pressure plate off while you had it apart?

 

[Kenonf]

No I did not touch the clutch, other than wire brushing out the splined holes on the clutch.
Thanks,
Ken

 

[94BULLITT]

The alignment tool you were talking about will not help then. It is for aligning the clutch, it goes int the the clutch disk and into the pilot bushing or bearing. Is there a inspection hole in the bellhousing?

 

[Kenonf]

I am not sure about an inspection hole,you think I might get something in there to stop or move inner shaft.
Thanks
Ken