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Old 06-05-2015, 11:07 AM
lazyade lazyade is offline
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Join Date: May 2015
Posts: 1
Default Benford 4000 Dumper / Spicer Transmission Problems

I am on the Committee for our local power boat club and we've just bought a 1998 Benford 4000 to be our new boat launch vehicle. But we have a problem! It drives well in forward gears but to get it to go backwards you need to give it a hell of a lot or revs and even then it moves really slowly. We've checked the basics like transmission fluid.

We've checked the transmission plate and it is manufactured by Spicer Transmissions in Wolverhampton, England. Model No. COM-T4-2012. I haven't been able to find much about this transmission online but I had heard Spicer had been purchased?

Can anyone provide any diagnosis or advise on if my transmission might be known as something different?

Oh and I'm new to the forum - this is my first post.

Thanks in advance.

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Old 06-05-2015, 12:11 PM
digger man digger man is offline
Intendant of the Building
Join Date: Aug 2011
Posts: 359
Default Re: Benford 4000 Dumper / Spicer Transmission Problems

Hi and welcome,

Is sounds like the reverse clutch pack slipping either due to worn plates, or lack of oil pressure.

As you say its fine fwd make me think if it is oil pressure issue, its after the fwd/rev control valve as fwd is fine. Piston seals may be leaking. Is the transmission oil pressure light working correctly?

There will be a point to measure the main line pressure, fwd clutch pressure and rev clutch pressure. Thats where i would start.
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