Good Sam Club Open Roads Forum: Class A Motorhomes: transmission cooler
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olfarmer

Iowa

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Posted: 10/19/19 09:01pm Link  |  Quote  |  Print  |  Notify Moderator

My 2001 workhorse chassis has a factory transmission cooler. I would like to put a larger one on because, while it runs very cool on level ground, even towing my Jeep, if I get in mountains it seems to get pretty hot, even not towing. My question is, it has nice metal screw on connections and I don't really want to cut the rubber lines and clamp them on to an after market cooler. Is there a way to buy a cooler with the same connections as the original cooler, or is that just wishful thinking?


Ed & Ruby & the 2 cats
2001 Winnebago Brave 30W
7.4 gas Work Horse Chassis
99 Jeep Grand Cherokee


enblethen

Moses Lake, WA

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Posted: 10/20/19 10:56am Link  |  Quote  |  Print  |  Notify Moderator

You should be able to find an adapter to go from screw type fittings to barb.
Have you cleaned the debris out between AC condensor and the radiator? You can normally loosen the AC condensor and then blow out the debris with a comprassor.


Bud
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MountainAir05

New Mexico

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Posted: 10/20/19 01:02pm Link  |  Quote  |  Print  |  Notify Moderator

https://www.carid.com/images/bm/cooling-systems/pdf/coolers-user-guide.pdf

I have a B&M cooler that has fitting but will it connect to your fitting. Only you can decide.

Chum lee

Albuquerque, NM

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Posted: 10/20/19 02:29pm Link  |  Quote  |  Print  |  Notify Moderator

Any good hydraulic hose shop can help you. Ideally, for flexible plumbing, IMO, you should use swaged fittings on the cooler if you want a reliable connection. If it's hard connected, then flare nuts are the way to go.

When you say the ATF is hot, . . . . how hot? It's normal for the ATF to heat up (quite a bit) under load. The engineers that initially sized the ATF cooler designed the system to keep the ATF within acceptable limits at maximum towing capacity and extreme temperatures. Generally, they don't guess, especially on truck chassis. Are you having a specific problem, or are you thinking that you might? The numbers tell the truth.

Chum lee

wolfe10

Texas

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Posted: 10/20/19 03:14pm Link  |  Quote  |  Print  |  Notify Moderator

Also, you need to be able to not "OVER-COOL" in cooler temperatures.

Though the mechanics is a bit different, I installed a fuel cooler on the return line on my DP. Like ATF, there IS such as thing as fluid being too cool.

So, made a cover for the cooler that velcro's in place for winter driving.


Brett Wolfe
Ex: 2003 Alpine 38'FDDS
Ex: 1997 Safari 35'
Ex: 1993 Foretravel U240


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atsrmf

Indio

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Posted: 11/03/19 08:30am Link  |  Quote  |  Print  |  Notify Moderator

Google Derale 13960. I installed one of these in my Class A, it works perfectly. The thermostat is set at 180, so over cooling isn't an issue. I placed it in series with the factory radiator cooler just before the return to the transmission (after the radiator). Installation is easy, you need to run a 12 volt feed, the thermostat grounds the circuit.

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