Renault Temis Transmission Problem

[DrWazzock]

After finally sorting out the engine I hitched up the stubble cultivator and did some land work. Loads of power and not overheating but now another problem.
When pulling very hard there is a sudden vibration or rattle and partial loss of forward speed as if a clutch is slipping. You’d think it was a splined coupling trying to mesh or gears coming out of mesh. Tried the FWD in and out but don’t think it’s that as could still bring on the vibration in 2wd although it’s more common in 4wd probably because higher load. Tried slipping the main clutch while it’s vibrating but I can’t really say much about that. Isn’t conclusive. They tell me it’s an MF back end but not sure about the gearbox. It’s all manual, high low range, 4 speeds and a manual splitter. You have to declutch for everything.
6700 hours. Any ideas? Still going the job but a bit worrying.

 

[daveydiesel1]

Could be a bearing on its way out or if its a dry clutch some of the springs could be broken. Is there a plate u can remove to look up into clutch?

 

[Wellytrack]

Not a Gima rear in those models.

 

[Lincs Lass]

Might be wrong but are they Renault engine, John Deere gear box and the Massey back ends,,one of the renault range was a right mix up of brands

 

[DrWazzock]

Not a Gima rear in those models.

All I can see on the gearbox is a Renault Iveco label and number.
It’s definitely an Iveco engine. 6 cylinder.

 

[Wellytrack]

Might be wrong but are they Renault engine, John Deere gear box and the Massey back ends,,one of the renault range was a right mix up of brands

Iveco Engine and Renault rear as built in Les Mans in this model.

John Deere 4’s and 6’s in the Ares models mated to Gima rears.

 

[DrWazzock]

Sounds like bearing at front end of gearbox to me but please God no, not another gearbox stripdown.

 

[Lincs Lass]

Iveco Engine and Renault rear as built in Les Mans in this model.

John Deere 4’s and 6’s in the Ares models mated to Gima rears.

The Ares ,,thats the one ,,we had one on demo ,fantastic cab suspension and plenty of power

 

[DrWazzock]

This Temis has the nice cab suspension, but not the electronic gearbox or hydraulics. It pulls like a train but is showing it’s age and keeping me busy in the workshop. A very capable tractor when it doesn’t have a problem.
Cooling was sorted by new head gasket and new viscous fan coupling, but the extra power capability seems to have highlighted a transmission problem.

 

[Drillman]

Trans on those are pure old school reno it’s the Ares models that are a mishmash of parts from Gima etc....

 

[DrWazzock]

I’m just hoping it’s easier than the lambo was with it’s 40 speed box comprising splitter, 5 speeds, and 4 ranges including super reducer.

 

[multi power]

I’m just hoping it’s easier than the lambo was with it’s 40 speed box comprising splitter, 5 speeds, and 4 ranges including super reducer.

Probably too far away from you but the expert on these is Merlin Salisbury near Carmarthen, Google should find him, I'm sure he would be able to explain whatever you need to know about it

 

[DrWazzock]

Just for the record it would seem to be the front wheel drive clutch pack that is slipping.
When you get in a tough patch you feel like you have lost some drive and sometimes there is a hell of vibration. Flick the fwd switch off and the racket stops and the travel sowed doesn’t recover. Leave the fwd engaged when it starts slipping and it regains grip when you are through the tough spot and the vibration stops. Sometimes sounds like a hammer drill, sometimes there is no vibration but you can see the front wheels lose drive and the rear wheels struggle. It’s not abrupt orgrandom which would indicate solenoid fault, it’s a soft slip in tough ground.
Another job but it can wait. Will power Harrow and drill without putting much load on front wheels so can tackle it after drilling finished. Ploughing nearly finished and only a problem in really tough spots:

 

[lexion780tt]

Probably splines on pinion shaft not very well

 

[DrWazzock]

Sounds like splines jumping, sometimes. Sometimes just slips without the vibration. I did wonder if the front diff pinion was coming out of mesh, it sometimes sounds that rough. Anyway I will have to have a look:

 

[zero]

We once had a 70 34 Renault that wore the splines off the front diff input shaft. A new coupling got us going for a time.

 

[DrWazzock]

Working around it for the time being. Removed half the front weights and going a gear lower. Only notice reduced drive very occasionally now and there is no vibration when the slip occurs.
I had wondered if it was the main clutch. The linkage has plenty of free travel. When you hit a tough bit you you feel a loss of traction as if the front wheel drive has disengaged. I am not sure if the vibration at times is a spline slipping or is just generally vibration through the transmission as the the rear wheels take up the drive.
I have tried with front wheel drive disengaged but just can’t get through the tough areas and cant see rear wheels from the cab to know whether it’s main clutch slip or wheel spin.
Anyway at least I should get finished in a lower gear without hopefully causing too much further damage.

 

[335d]

Just for the record it would seem to be the front wheel drive clutch pack that is slipping.
When you get in a tough patch you feel like you have lost some drive and sometimes there is a hell of vibration. Flick the fwd switch off and the racket stops and the travel sowed doesn’t recover. Leave the fwd engaged when it starts slipping and it regains grip when you are through the tough spot and the vibration stops. Sometimes sounds like a hammer drill, sometimes there is no vibration but you can see the front wheels lose drive and the rear wheels struggle. It’s not abrupt orgrandom which would indicate solenoid fault, it’s a soft slip in tough ground.
Another job but it can wait. Will power Harrow and drill without putting much load on front wheels so can tackle it after drilling finished. Ploughing nearly finished and only a problem in really tough spots:

not sure if it’s the same setup, but we had a 106-54 that Drove like it was stuck in 4wd, noticeable on hard surfaces. Took the drop box off, and the circlip had come out of the clutch pack.

 

[DrWazzock]

I put the brakes full on while ploughing, nearly stalled it but no slippage, so I think that eliminates the main clutch.
Must be the fwd clutch as the old boy at Claas said. Job for next downtime.

 

[DrWazzock]

No, it isn’t, it’s the main clutch slipping. Now loses drive when in 2 wd when drilling through a tough patch in a high gear. Also slips when you apply the brakes now. There is sometimes an accompanying graunching noise, sometimes not, but I think that’s just normal gear train rattle, backlash.
I notice in the workshop manual you need a fair selection of factory supplied distance pieces, mandrills and gauge tools to set up a new clutch. Diagrams but no dimensions of course. Suppose I will have to ask an old specialist.
A very good tractor when it is actually going.