Tucker Transfer Case Pump

[Nikson]

Working on a 1642 CME one, originally built for a snowmobile club as a groomer (plow/rear attachments)

Transfer case bearing went out, got messy inside.

Original setup is using a 12v pump to run ATF as coolant up to a 12x24 radiator in front of the main coolant radiator for the engine.

Got the T/C rebuilt by Tucker, installed in place... Started hooking up all the plumbing - and while trying to do a flush on the system to make sure I'm clear of all the debris from crushed bearing - thought about the real need for the pump and such a large volume of gear oil to cool the T/C, considering that I wont be running it as a groomer 24/7 as a club would.

Joy riding is different, and previous 1544 didnt have a pump.

Whats everyone's thoughts on this ?

p.s. yes, I do get the concept of overall better option of having the pump used as it was from original build, but in case where its not being put through heavy use - is there a real need/point to it?

 

[redsqwrl]

I feel you answered your question. I keep rebuilt cases on the shelf.

My work bench has three t cases with chewed up gears and or spun bearings for parts.
After some point in the mid to late 90's the t cases got bigger. Some of the small four gears had pumps. All of the large 4 gear cases (meritor based) have cooling pumps. I feel the traction differences account for the heat.
I feel the attempt at cooling treated the sympton not the cause.
I feel: The front track knocks the air out of the snow. The back track has denser snow to work with thus more traction.
In grooming scenarios. The drag and engine are also sitting on the back adding traction.

If i were in your shop bull shitting over a beer, i would tell you what i tell most of my snow cat buddies with broken snowcats.....
" your problem is likely electrical....." when you turn your head and say electrical?!.....
" yeah the there is dwaead short, between the steering and the seat!"

Lift off the throttle once in a while.... giggle gigggle....

$.02 please

 

[Nikson]

I feel you answered your question. I keep rebuilt cases on the shelf.

My work bench has three t cases with chewed up gears and or spun bearings for parts.
After some point in the mid to late 90's the t cases got bigger. Some of the small four gears had pumps. All of the large 4 gear cases (meritor based) have cooling pumps. I feel the traction differences account for the heat.
I feel the attempt at cooling treated the sympton not the cause.
I feel: The front track knocks the air out of the snow. The back track has denser snow to work with thus more traction.
In grooming scenarios. The drag and engine are also sitting on the back adding traction.

If i were in your shop bull shitting over a beer, i would tell you what i tell most of my snow cat buddies with broken snowcats.....
" your problem is likely electrical....." when you turn your head and say electrical?!.....
" yeah the there is dwaead short, between the steering and the seat!"

Lift off the throttle once in a while.... giggle gigggle....

$.02 please

Thank you, input is appreciated.

In Russia we said it was the "gasket" between the steering and the drivers seat that had a leak in those scenarios