When I start up everything is fine eg. all lights go out but when I  go forward or reverse when clutch is released there is a loud clunk in all the odd gears eg. 1,3,5,7 thro' the range but no clunk in even gears eg. 2,4,6 & so on. We have fitted new clutch damper & new selanoids on top of gear box but still problem. Can anyone on line help? Thanks

sounds like clutch packs to me, does it do it backwards as well, an how many hours has it done?

cheers

 

yes clutch packs  has been checked and are ok,has 6500hrs, and does it backwards as well.

i have a case mxm 155 used to do the same thing look in youre operators manual and calibrate youre clutch that cured mine took around 5 minutes and very simple to do hope that helps

thanks hedgecutter my problem not calibracion but something more internal

as well as calibration the tractor can work out its own fault codes to reference in the book,

Have calibratied clutch ,but no fault codes come up.Clunk is when clutch is released,but tractor drives ok?

thanks.

have you checked the damper plate sounds like you have some boken springs

jim

Did you find out the cause of clunk? I have same problem in my TM 155.

Our T6030 has also got a clunk problem, but our's does it mainly on the road when the 4 wd disengages after braking. Any suggestions ?

welshnwilling:

Our T6030 has also got a clunk problem, but our's does it mainly on the road when the 4 wd disengages after braking. Any suggestions ?

That bang when you let the brakes off on a newholland drives me mad. it must stress the transmission.

for road work give me a Lambo or Same any day. proper 4 wheel brakeing with no big clunk

Absolutely agree boveyfarmer, we had Fiats back in the 80's with true 4 wheel braking and New Holland claim to have progressed over the years....what a joke !!!

 Gidday from new zealand sounds like you have done a syncro in your gear box these tractors a famous for it its always the same one that goes. My tm150 is getting one done at the moment st 2200 hours. Its a 6000 to 10000 dollars job in new zealand.

 

Hope this helps

 Richard

Hi,

Have a Ford 7840 with similar problem in all gears foward and reverse. I have set all the clutch packs with the calibration plug in switch. The problem is worse when the oil is warm. I was wondering if you had and success with you TM 150, I know it's a few years since you posted the issue but any help would be appreciated.

Thanks  

 

welshnwilling:

Our T6030 has also got a clunk problem, but our's does it mainly on the road when the 4 wd disengages after braking. Any suggestions ?

My Massey used to clunk when i let the brakes off but was due to replacing the front tyres which caused some serious wind up. I wasn't long as i went back for the back ones as well

Most of the manufacturers seem to have gone down the road of automatic 4wd engagement when you brake but it seems totally wrong to me, i'd never dream of going down the road at 30mph & putting it into 4wd

 

Dave5465:

Most of the manufacturers seem to have gone down the road of automatic 4wd engagement when you brake but it seems totally wrong to me, i'd never dream of going down the road at 30mph & putting it into 4wd

Try telling that to New Holland ! We changed the 6030 for a 6070 with brakes all round. It also engages 4wd when braking, but there isn't the clunk as on the 6030. There is a fuse that could be removed to stop 4wd being engaged when braking, but there's no way I'm going to take responsibilty for removing it. Just imagine the fuss if there was an accident !

 Well you could blow the fuse, and put it back into place

mursal:

 Well you could blow the fuse, and put it back into place

Trust you to lead me astray !

 I remember a good few years ago when i had the Deere baler i was on one of my frequent visits to the local Deere dealer for parts when a bloke came in grumbling about summat that had broken down saying how they didn't abuse their machinery etc. When he'd gone the fitter said dunt believe everything he tells you because he'd come in to sign some papers to do with an insurance claim he'd just had.

Apparently he was going down the road with a load of hesston bales behind him out of gear travelling at a fair rate of knots when a car pulled out of a side road in front of him. He reacted very quickly, hitting the brakes & locking the back wheels (much quicker than the auto 4wd engagement reacted). Picture the scene.... the back wheels have stopped, the front wheels are rotating around 30mph & you put it into 4wd. As you would expect something had to give, the propshaft sheared the shaft off at the front end which then dropped & hit the ground. When the propshaft dug into the road it then broke of somewhere at the other end causing quite a lot of gearbox damage, then just to finish the job off right it went through the diesel tank.

Whatever your views on auto 4wd engagement i don't think you can blame it in that particular case

Off topic I'm afraid, but worth repeating.

I spoke to a farmer recently, he had had a nasty experience involving a tractor, slurry tanker and a steep hill. What happened was this.....

He was coming back from the field with an empty tanker along a narrow country road. On this road was a very long steep hill. At the top of the hill he applied the brakes but after a while he realised that things weren't working quite as they should. The reason for this was that he had a burst on his trailer braking pipe. The oil was draining out of his tractors back end which meant he had no steering and no brakes, even on the tractor. By now the tractor was flying down the hill and all he could do was shift down on the powershift. Luckily he managed to slow down enough to take the bend at the bottom of the hill and then come to a halt as the road levelled out. 

He was incredibly lucky to survive unhurt and without any damage. Just imagine what could have happened if someone had come up the hill to meet him. And all because of a burst pipe !

did he need a fresh pair of underpants?

I agree the 4WD will cause a knock when it is disengaging especially if the front wheels are turned off straight but my problem has nothing to do with the 4WD. The gearbox is an SLE semi-powershift and the problem is that when you select either foward or reverse and let off the clutch there is an almighty clatter when the clutch packs are engaging. The clutch packs have been set to correct fill time and the accumilator has been refilled to the correct pressure but still no success. Could there be a problem with loss of oil pressure within a circuit. Any ideas.

Cheers 

Gearbox was dismantled and rebuilted by N H. Could not find any problem. So of she went to Cambridge,will never have another powercomand.

I have had 4 TMs, we split 3 of them, various problems, sycro replaced, sycro fork broken and  on the power command it was bearing failure on the end of clutch pack.   I geuss you'll have to split it to really find out the problem. Good luck.

Had a similar problem with a TM165 powercommand , along with constant buzzing of valve under transmission cover. Replaced a steel pipe under the cab with a rubber one and buzzing noize along with clunking gearshift disappeared. Cost around £25 from memory.