gearbox cooler

Old forum posts ending on Oct 21 '09

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willie56
Posts: 4
Joined: Fri Dec 19, 2008 3:49 am
Location: manchester, england

gearbox cooler

Post by willie56 »

i have been advised to fit a gearbox oil cooler to my autobox as i intend to drive at altitude but was given no reason why, does anyone nnknow why this might be needed :?:
Jim LaGuardia
United States of America
Posts: 1704
Joined: Wed Apr 14, 2004 3:42 pm
Location: San Bernardino Ca
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Post by Jim LaGuardia »

Best to post TD questions in the TD section.
There are only a couple TD owners on the list that could point you in the right direction.
It would also be prudent to update your location in your profile. It is hard to suggest where to go or who to see without a location :shock:
Cheers, Jim LaGuardia
http://smg.photobucket.com/albums/v510/Goatwerks/
"Arch Magus of Machines."
willie56
Posts: 4
Joined: Fri Dec 19, 2008 3:49 am
Location: manchester, england

Post by willie56 »

thanks Jim, i live in england if that is any help?
Jim LaGuardia
United States of America
Posts: 1704
Joined: Wed Apr 14, 2004 3:42 pm
Location: San Bernardino Ca
Contact:

Post by Jim LaGuardia »

As a transmission specialist, I would say that a trans cooler would extend the life of the fluid. On steep terrain the trans works harder resulting in higher fluid temps. These higher temps over time cook the rubber seals into a plastic like state resulting in internal pressure leaks . Burnt fluid also damages the clutch plates. The clutch plates are lined with a paper facing that needs to absorb fluid to stay cool, grip, and not wear, burnt fluid turns to varnish on the plates and seals the pores hastening wear.
Best to use a temp guage also to monitor trans temp, try to keep the fluid below 220 deg F.
Hope this general trans info is what you are looking for.
Cheers, Jim LaGuardia
http://smg.photobucket.com/albums/v510/Goatwerks/
"Arch Magus of Machines."
pinzmeister-uk
Great Britain
Posts: 172
Joined: Thu Nov 08, 2007 5:39 pm
Location: united kingdom
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gearbox cooler

Post by pinzmeister-uk »

We fitted a larger cooler and additional electric fan to a 718 TD for heavy towing. I'm only over the hill from you in Sheffield, give me a call on 07950 853505 or come and see us. Chhers Nigel.
Profpinz
Australia
Posts: 1056
Joined: Sat Apr 17, 2004 7:08 pm
Location: Melbourne, AUSTRALIA
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Post by Profpinz »

I have an idea that the New Zealand military 718's "may" be fitted with transmission coolers!
They had a problem in the early days and I "believe" that may have been part of the fix!
I'II see if I can get some further info!
Peter

1974, 712 6X6 Pinzgauer
1983, 710-1.6 4X4 Pinzgauer
1997, 718 6X6 Pinzgauer (in pieces)
1971, 700 Haflinger
1974, 703 LWB Haflinger
2001, Range Rover

http://www.ozpinz.com
dumptruckGB
Liechtenstein
Posts: 9
Joined: Sun Apr 23, 2006 10:55 am
Location: Central Europe/GB

Post by dumptruckGB »

There's is a 718k that is owned by a Austrian electric company that has to service sub stations high in the alps . They carry a lot of kit with them ( ie the Pinz is fully loaded ). The Pinzgauer that operates is a UK build (built after 2000) and runs the TDI motor. I know the mechanic who services this vehcile. He had to fit a gearbox cooler, as they where having problems with the gearbox over heating and problems with ABS.This could be to do with more power going through the box from the TDI motor. You need to find out what weight your going to carry and is your Pinz a P80 , P90 or P93 ??
They where running a Graz built 718 (P80) they ran that Pinz to over 250,000Km , they wore it out .
Pinz A ho!!
willie56
Posts: 4
Joined: Fri Dec 19, 2008 3:49 am
Location: manchester, england

Post by willie56 »

thank's to you all, it seems as though what i was told was correct, but i would have thought that the reduced temperature at altitude would have solved these problems?
Tads
Posts: 44
Joined: Thu Feb 23, 2006 1:02 pm
Location: Telford, UK

Post by Tads »

Willie,

The reduced ambient temperature effect is completely overwhelmed by the increased heat generated by the box running at high rpm in low gears - this scenario often requires large amounts of torque multiplication from the torque converter - this generates the heat. The auto box in a Pinz only has lockup in 4th gear so heat generation with large torque demand is an issue.

The other posters are correct, in the latest configuration Pinz a new cooling fan, fan clutch and radiator for engine and gearbox is fitted.
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