40M2S and 40M2T interchangeable?

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GlenM
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40M2S and 40M2T interchangeable?

Post #1 by GlenM » Sat Mar 10, 2018 2:03 am

As per the subject, my dumper has a 40M2S gearbox that needs an overhaul (again). Would a 40M2T gearbox fit? It's a Thwaties Alldrive 6000 with a PH2 engine.

Thanks.

Glen.


Whitlock 505
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Re: 40M2S and 40M2T interchangeable?

Post #2 by Whitlock 505 » Sun Mar 11, 2018 9:50 pm

Glen

I've just overhauled a 40m newage gearbox and when my son ordered the parts he was told there was very little difference between the variants, I think the "T" denotes a transfer box for 4 wheel drive applications, the castings are the same

Ian


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Re: 40M2S and 40M2T interchangeable?

Post #3 by GlenM » Mon Mar 12, 2018 1:00 am

Ian,

Thanks for your reply. It does sound probable that there are few differences. My dumper is 4wd and it has the S box with a separate transfer box.

I did e-mail PRM yesterday to ask, so will see if they reply.

Glen.


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Re: 40M2S and 40M2T interchangeable?

Post #4 by Whitlock 505 » Mon Mar 12, 2018 3:07 pm

Glen

Hopefully PRM will be able to help but they told me that the 40M box had not been made for years, I found plant & engineering services of Exeter very good and they know they're stuff about dumpers and gearboxes.
Have you got a pic of the box in question?


Cheers
Ian


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Re: 40M2S and 40M2T interchangeable?

Post #5 by GlenM » Thu Mar 15, 2018 12:39 am

PRM were extremely helpful, they said that the only differences between the two could be bellhousing, output flange and gear-lever. They offered to check which of the three it might be, by full serial numbers but the guy selling T 'box on e-bay pulled it, despite me having a bid already on it!
We have already re-built this one a couple of times because it keeps destroying the needle roller bearings on the front of the layshaft. Not sure why. I do now have a solid brass bush from another spares 'box, which fits in place of the bearings, so that might be worth a try.
I use the dumper for work, so I need to get a spare 'box to fit, then the original can be repaired and kept in reserve.
I don't think I have a photo of the 'box.


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Re: 40M2S and 40M2T interchangeable?

Post #6 by Whitlock 505 » Sat Mar 17, 2018 11:16 pm

Hi Glen

That's what I replaced the needle bearing with a brass one, after rebuilding the casing, had to make sure there was an oil journal around the bearing for lubrication

Ian


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Re: 40M2S and 40M2T interchangeable?

Post #7 by GlenM » Sun Mar 18, 2018 11:45 pm

Ian,

That's interesting. Where did you get the brass one from? I guess there is an oil feed for the needle bearing anyway. The old brass one has an oil hole through it to an oil groove.

The T 'box is back on e-bay again, so I have agreed a price and will hopefully be picking it up tomorrow/Tuesday.


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Re: 40M2S and 40M2T interchangeable?

Post #8 by B-Man » Mon Mar 19, 2018 10:04 am

Hello
If its the needle bearing I think youre on about (part number 0561404) it changes to a brass bush now part number 0561404B. We fit these to the 40M2B124 gearbox fitted to old Benford 2 Ton Dumpers. I've attached a gearbox breakdown of the Benfords Gearbox so you can check where it goes. They can be obtained from a company called Plant and Engineering in Exeter phone number 01392 882220. I'm sure there give you dimensions etc to make sure its the correct part your after.

Andy
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