Unimog u1000 transmission advice please

[Agri–Mechanics]

I went to do a job on a case tractor on a farm and wound up taking a look at his unimog u1000 whilst I was there. Initial complaint was that it was slow to turn over and would not start long story short ended up removing the starter that was fried took out the clutch and the drive in front of it, which spins freely one way but won't spin the other I put in a new starter and tried it with just the torque converter attached to the engine, it fired up straight away and span up freely I put the box back onto the torque converter and it's slow turning over again I presume the box houses the forward reverse packs the clutch attached to the rear of it, then a prop shaft that runs to the gear box. I'm not too familiar with unimogs but everyone's got to start somewhere I guess I'm just looking for someone who could give me some advice or who re cons these units. I would say it's like forward and reverse are engaged but like I say it turns freely anti clock wise but really tight clockwise. enough so to stall the starter. Any advice would be very welcome. Thank you..
Ps I know my grammer sucks and I can't spell but I'm pretty good with spanners so could the grammer police just keep on walking

 

[Tubbylew]

You might be better trying the machinery section more folk'll see it there.

 

[Agri–Mechanics]

You might be better trying the machinery section more folk'll see it there.

Thanks I'll try that

 

[Post Driver]

There are Unimog Facebook groups if you or someone you know can ask on there

 

[ACEngineering]

U1000 is old isn't it? wouldn't have a torque converter? Is the PTO out of gear? all hydraulic levers in neutral?

 

[Agri–Mechanics]

U1000 is old isn't it? wouldn't have a torque converter? Is the PTO out of gear? all hydraulic levers in neutral?

U1000 is old isn't it? wouldn't have a torque converter? Is the PTO out of gear? all hydraulic levers in neutral?

 

[Agri–Mechanics]

 

[Agri–Mechanics]

Definately got a torque converter

 

[Agri–Mechanics]

It starts fine without this box attached I think it must have a transmission pump in it not sure if forward reverse packs are in it or in the gear box my knowledge is limited on these and not sure what would cause it to spin ok one way but not the other

 

[ACEngineering]

Never seen a mog with one, still got an old U1200 here. from sometime in the 1980's i think?

 

[Agri–Mechanics]

Never seen a mog with one, still got an old U1200 here. from sometime in the 1980's i think?

Just been reading I think it may of come from the u406 German army had them fitted and coukd pull aircraft or train carriges I've just looked at photos again I wonder if he lined the transmission pump up before installing first time would this cause it to be hard to spin one way and not the other or would it be tight bothways

 

[bwtservicestimber18]

View attachment 994162

Hiya hope you dont mind me jumping on this old post, but I purchased this unimog a few years back, after stripping the engine out and replacing, I'm wondering how I make sure the tourqe converter is getting oil , does it get its supply through the transmission box ?
Seeing you worked on this before , hoping you might be able to help.
Thanks for your time