Manual Tranny Cooler/Filter
 

Nothing earthshaking ‑ just a pictorial showing one half a NV‑5600 with a Fast Cooler, and the other half with a filter installed. The Fast Coolers and tranny lube filters are available from several truck accessory vendors - I got mine from Genos.

The purpose of the coolers are to both provide added tranny lube cooling and also add lube capacity for better overall transmission operation and lifespan ‑ looks like this installed:

http://img410.imageshack.us/img410/9580/coolertw5.jpg

The added PC‑type heatsink was done as an experiment to see if it added any significant cooling effect to what the Fast Cooler already is supposed to provide ‑ I have NO illusions as to any vast benefit, just figured it was worth a try. As can be seen, I also have mounted a heat sensor to monitor the case temps in down‑the‑road situations ‑ perhaps not the same as an actual temp sensor bathed my the lube, but all I have at the moment. The addition of these 2 items, plus a little overfilling allowed 6 quarts in the tranny.

The other side ‑ the filter side also has an added heatsink ‑ and the filter obviously deflects a percentage of operational lube flow into a cavity, then thru a small filter, then back out to the main tranny case.

http://img211.imageshack.us/img211/6311/cooler1zq1.jpg

Reports from users indicate the filters really catch lots of crud, and I also added a powerful magnet inside the filter cavity of mine for some added benefit in attracting and retaining damaging ferrous materials. At 50K miles, and several lube changes, this was the first time I'd had the side covers off and attempted to clean out the tranny sump and magnet ‑ both were very filthy, and certainly needed cleaning!

A couple of 50 mile runs over a pair of local 5000 foot mountain passes while towing my 12 foot fishing boat and gear delivered a nominal 50 degree temp rise ‑ ambient outside temps were 75 degrees, the tranny monitor registered +‑ 50 degrees higher ‑ I'm very curious what other users with a setup like mine ‑ or just the coolers alone, typically see in terms of temperature rise in varying situations?

My digital temp monitor tops out at 156 degrees, so I'm pretty certain a hot summer day towing our 5th wheel will put it well off scale ‑ but I also have an infra‑red handheld temp monitor to use at higher temperatures...

I thought about trying the filter from genos, i think you just made my mind up, thanks

Another great idea for the manual trans trucks! :U:

i was contemplating this for a while plus a short shifter i jsut need more moneys

How do the filters work, exactly? Without a pump I don't understand.

Pretty much just by gravity flow - what is hard to see in the pic, is that there are 2 pieces to that filter cover, and they sandwich together to form a cavity. There's an opening at the top of the formed cavity that catches oil slung off the nearby gear cluster that rotates next to it - then that oil flow has to pass thru a small filter element before returning back thru an opening in the lower part of the cavity, and into the gearcase.

Seems to work quite well, and catches lots of garbage.