1990 T25 TD5 gearbox

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TonyR
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1990 T25 TD5 gearbox

Post by TonyR »

Hi, folks. My beloved Ziegel (P.5. Engine number JX198413)suffered gearbox failure almost a year ago and has since been sitting on the yard of my local and otherwise excellent mechanic.
The garage has an open and ongoing search for a replacement; either salvaged or recon', etc but so far nothing has come up.
I'm sure I should have jumped on it earlier but I've started to get the impression that the job of finding one is mine.
Where do I begin to identify which cogbox it is?
Thanks in advance.
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DoubleOSeven
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1990 T25 TD5 gearbox

Post by DoubleOSeven »

Plan A: Get the mech. to remove it and put it on a pallet, get a courier to pick it up, send it to Aidan

Plan B: Clean the casing to reveal the gearbox code, Google code, gamble and buy the second hand one the interweb throws up.

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cobblers
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Re: 1990 T25 TD5 gearbox

Post by cobblers »

DoubleOSeven wrote: 20 Jun 2023, 09:20 Plan A: Get the mech. to remove it and put it on a pallet, get a courier to pick it up, send it to Aidan

Plan B: Clean the casing to reveal the gearbox code, Google code, gamble and buy the second hand one the interweb throws up, fit it, drive it round the block to find it sounds like someone has filled it with gravel, take it back out, put it on a pallet, send it to Aidan anyway

Edited for accuracy

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Re: 1990 T25 TD5 gearbox

Post by Cecil »

ImageImageImage

The code along with the date code is near the bottom  below the reverse switch and usually hard to read ,in my case it’s 3H . (ASS also 5 speed TD)
As has been said best get your existing gearbox reconditioned.

 

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Re: 1990 T25 TD5 gearbox

Post by TonyR »

DoubleOSeven wrote: 20 Jun 2023, 09:20 Plan A: Get the mech. to remove it and put it on a pallet, get a courier to pick it up, send it to Aidan

Plan B: Clean the casing to reveal the gearbox code, Google code, gamble and buy the second hand one the interweb throws up.

Image

Thanks for the reply, double0seven. I popped over to the garage today to try to find the code but it's too feint to read. Planning on going back tomorrow with more time and maybe try to make a rubbing. Was initially hoping to have the box rebuilt but the two places where we have enquired didn't want the job as (I think - will check tomorrow) it's the output shaft that failed....

TonyR
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Re: 1990 T25 TD5 gearbox

Post by TonyR »

cobblers wrote: 20 Jun 2023, 10:23
DoubleOSeven wrote: 20 Jun 2023, 09:20 Plan A: Get the mech. to remove it and put it on a pallet, get a courier to pick it up, send it to Aidan

Plan B: Clean the casing to reveal the gearbox code, Google code, gamble and buy the second hand one the interweb throws up, fit it, drive it round the block to find it sounds like someone has filled it with gravel, take it back out, put it on a pallet, send it to Aidan anyway

Edited for accuracy

Cheers Cobblers.
Point taken 🤣
As I mentioned to double0seven, I would prefer to have the box repaired but I'm starting to worry that failed part is not available but will know more tomorrow.

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Re: 1990 T25 TD5 gearbox

Post by TonyR »

Cecil wrote: 20 Jun 2023, 11:09 ImageImageImage

The code along with the date code is near the bottom  below the reverse switch and usually hard to read ,in my case it’s 3H . (ASS also 5 speed TD)
As has been said best get your existing gearbox reconditioned.


 

Thanks, Cecil. Did try to read it today but it's too feint. Going back tomorrow and will try to make a rubbing...
Yep - hoping for a rebuild 👍

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Re: 1990 T25 TD5 gearbox

Post by TonyR »

Hi folks.
Update.
It's the input shaft which has failed.
The two box rebuilders we've contacted have said the part isn't available....?

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Re: 1990 T25 TD5 gearbox

Post by Cecil »

Image
https://brickwerks.co.uk/product/input-shaft-t3-d-td/

3 in stock !

If this is what your gearbox needs  is is readily available . Just needs the bell housing  taken off and the shaft detached via its collar and cir- clip and threaded stud. It would need a new gasket and oil seal. The threaded stud in not meant to be done up tight,rather it should allow the shaft to be slightly Wobley ( the spigot bearing supports it once it’s bolted to the engine)  not really that specialist a job. Unless it has caused other damage. Also oil must be GL4.

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Re: 1990 T25 TD5 gearbox

Post by TonyR »

Cecil wrote: 22 Jun 2023, 21:52 Image
https://brickwerks.co.uk/product/input-shaft-t3-d-td/

3 in stock !

If this is what your gearbox needs  is is readily available . Just needs the bell housing  taken off and the shaft detached via its collar and cir- clip and threaded stud. It would need a new gasket and oil seal. The threaded stud in not meant to be done up tight,rather it should allow the shaft to be slightly Wobley ( the spigot bearing supports it once it’s bolted to the engine)  not really that specialist a job. Unless it has caused other damage. Also oil must be GL4.

Huge thanks, Cecil. Have forwarded to my mech. I think the splined sleeve is badly worn too and maybe the brass bushing thru the bell housing needs replacing. Hopefully your lead will connect to any other bits needed.
PS. Should there be a circlip around the middle of the shaft? It looks as tho something was there....
Thanks again Cecil.

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Re: 1990 T25 TD5 gearbox

Post by Cecil »

Cir clip is by the splined sleeve . No cir clip in the middle of the input shaft.

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Re: 1990 T25 TD5 gearbox

Post by Cecil »

What state is your crankshaft spigot bearing in , broken up or maybe completely missing .

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Re: 1990 T25 TD5 gearbox

Post by clift_d »

If the spigot bearing has gone then you might want to think about getting the clutch replaced at the same time.
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TonyR
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Re: 1990 T25 TD5 gearbox

Post by TonyR »

clift_d wrote: 23 Jun 2023, 08:11 If the spigot bearing has gone then you might want to think about getting the clutch replaced at the same time.

Thanks clift_d.
The clutch was replaced before it was realised that the box was to blame for lack of drive - it was on its way out anyway...

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Re: 1990 T25 TD5 gearbox

Post by TonyR »

Hi folks. Thanks for your help so far.
We're struggling to find a replacement splined sleave - which connects both pieces of the input shaft. Any pointers would be welcome?

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