T7.200 gearbox problems

[glasshouse]

Just reversing out the shed with our T7.200 and suddenly the gearbox jams up like the brakes are on. Drives forward in a fashion but making some awful expensive money noises.. The tractor has a range command transmission and has done a very modest 2000 hours... (not very impressed).. We have other range commands done up to 17000 hours in TM's completely untouched, apart from the odd synchro and damper plate drives... Bad luck here, or are these newer models fitted with cheaper poorer quality bearings I wonder??..

Into the workshop with it and off with the cab. We split between gearbox and back end and start taking it apart. Soon find the fault, a bearing has completely collapsed on the bottom shaft and caused damage to the two splined shafts it supports and connects with, but fortunately no gears damaged. Complete strip down of the full transmission necessary, so out with the gearbox and completely dismantle. I had to make a couple of specialist tools to compress the clutch packs whilst inside the transmission housing to assist in their removal...

Parts needed to fix are £3000 from CNH, or alternatively, £600 from a supplier in Ireland who tell me their parts are allegedly from the same manufacturer as genuine CNH, or £300 from same firm but from a burnt out tractor, along with a £26.00 quality bearing and our own labour cost.. I think we will also change the rest of the bearings too as there appears to be no brand name visible on them and I have the fear of future failure!... Reassembly soon...

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Glad fomeone reposted this thread, cos guess what....

yours done same?

local guy has a nice t6070 140bhp? air brakes 50k, i was admiring it otherday thinking it looks handy. Googleed the gear boxes and few clicks to the above. i suspect one he has is pre this fault though being 08 if i remember correctly. sounds great too.

gearbox lost a lot of teeth, dont know how

 

[Ormond]

We had a new gearbox in a t7 200 power command at 300hrs. Complete unit in its casting was fitted

 

[Lynchy]

Lad i worked for both has a case puma 195 and t7050 this happened to the case last year and this year the the new holland did the exact same, expensive year[emoji51] There biggest fault supposedly

 

[Farmer_Joe]

Glad fomeone reposted this thread, cos guess what....

gearbox lost a lot of teeth, dont know how

Get some pics up if you can would be interesting to see what’s happened and possible try diagnose

 

[glasshouse]

Get some pics up if you can would be interesting to see what’s happened and possible try diagnose

 

[Lewis]

currently looking at perhaps purchasing a t7.200 or a t7050 found locally in the correct price bracket, bit concerned now! maybe should stick to a JD30 series!!

 

[norse]

currently looking at perhaps purchasing a t7.200 or a t7050 found locally in the correct price bracket, bit concerned now! maybe should stick to a JD30 series!!

https://thefarmingforum.co.uk/index.php?threads/farm-tractors-new-holland-t-7-250.254986/

 

[Davy]

Still not sold @norse?

 

[Treemover]

When you hear of simple cheap components going that cost mega bucks; it must really hurt.
Often heard of fiat 90series dropping a clip or pin leading to gearbox split.
Is this really narrowed to the t200 and former 6090 and 7000 series or do other models and brands suffer the same faith??

 

[dieselboost]

In fairnest to John Deere have never heard of issues on their Power Quad gearboxes bar the clutch packs needing renewing at mega hours. Went to see a Case MXU 125 a few weeks ago, 50k Electroshift box. Sounded fine getting up to 50K, but a terrrible whine when slowing back down by just reducing revs and not breaking. I assume that a bearing is near shot and on the 50K drive line and is not noisy when loaded but when unloaded whines. That or the differential setting or bearings are in trouble. Any one any experience of these boxes? Is this a common issue on high hour 50K electroshift CNH boxes? Tractor has completed 11,00 hours. Is in very good order otherwise, if it was only small mechanical issue in gearbox id take a punt on it as the money is fairly handy. Nice rainy night and winter project potentially.

 

[J 1177]

In fairnest to John Deere have never heard of issues on their Power Quad gearboxes bar the clutch packs needing renewing at mega hours. Went to see a Case MXU 125 a few weeks ago, 50k Electroshift box. Sounded fine getting up to 50K, but a terrrible whine when slowing back down by just reducing revs and not breaking. I assume that a bearing is near shot and on the 50K drive line and is not noisy when loaded but when unloaded whines. That or the differential setting or bearings are in trouble. Any one any experience of these boxes? Is this a common issue on high hour 50K electroshift CNH boxes? Tractor has completed 11,00 hours. Is in very good order otherwise, if it was only small mechanical issue in gearbox id take a punt on it as the money is fairly handy. Nice rainy night and winter project potentially.

It's common they all whine like stink, ploughing was unbearable with our nh 6050 with the back window open.

 

[dieselboost]

@J 1177 I'm well used to the normal whine of the Electroshift boxes. You do actually get used to it, utill you spend a day in any other brand of tractor!!This was a droning sound as I slackened off the throttle from 50K which to me indicates some shaft/diff misalignment or a worn bearing that is noising when unloaded.

 

[oil barron]

@J 1177 I'm well used to the normal whine of the Electroshift boxes. You do actually get used to it, utill you spend a day in any other brand of tractor!!This was a droning sound as I slackened off the throttle from 50K which to me indicates some shaft/diff misalignment or a worn bearing that is noising when unloaded.

50k is a worm gear directly of the PTO. I think @cosmagedon has been in the guts of a power command one, not sure if it’s the same for electroshift.

 

[J 1177]

@J 1177 I'm well used to the normal whine of the Electroshift boxes. You do actually get used to it, utill you spend a day in any other brand of tractor!!This was a droning sound as I slackened off the throttle from 50K which to me indicates some shaft/diff misalignment or a worn bearing that is noising when unloaded.

Ahh ok. Mind I still think it's a rubbish design for a modern tractor gearbox. If your handy with the spanners it shouldn't be beyond the realms of possibility to put it right especially if it priced well

 

[2wheels]

50k is a worm gear directly of the PTO. I think @cosmagedon has been in the guts of a power command one, not sure if it’s the same for electroshift.

worm gear, anyone remember the old petrol/parrafin wartime fordies. used to hear the tranny whining from miles away.

 

[Farmer_Joe]

Christ that looks serious, the force needed to do that damage must be unimaginable ! I have to say a 30 series jd although they are dear (excuse the pun) seems safer bet might have head gasket or get wage valve but the power quad is or seems very reliable

 

[glasshouse]

Christ that looks serious, the force needed to do that damage must be unimaginable ! I have to say a 30 series jd although they are dear (excuse the pun) seems safer bet might have head gasket or get wage valve but the power quad is or seems very reliable

No idea how it happened or when
It was driving ok, then a rattling noise started from damper

 

[cosmagedon]

50k is a worm gear directly of the PTO. I think @cosmagedon has been in the guts of a power command one, not sure if it’s the same for electroshift.

It's not worm drive but your correct that it's driven direct off the Pto shaft [emoji106]

Sounds like the crown wheel teeth are slightly marked but only on the back side, I've seen it before on one.

 

[Harvester]

Definitely do more bearings while in there, failing at them hours is a disgrace.
Also the other poster does not full with confidence on there gearboxes
judging by bearing supplier for cnh you prob ok with the spurious parts ha ha

I'm guessing he means the 50k bearing they tell me if the back end oil is not kept full this cheap bearing turns in the casting. 2 hrs labour and a cheap bearing if done before