Help with changing transmission oil cooler hose # 52028920AH. '05 Cummins Auto.

[McDermott]

Hey Guys,

I have a 2005, 2500 QC, Cummins, with a 4 speed auto transmission (ATS). I think its a 48RE? (not sure, but I'm sure its not critical for what I'm asking).

Anyway, I have a an oil cooler hose (that is both rubber and metal) that is connected to the driver’s side of the transmission from just above the reservoir to a small oil cooler (I beleive) on the side of the transmission. Its hose #1 in the attached picture. Mopar Part 52028920AH. On the part, the connectors look straight forward as to changing.

Question: Does gravity drain this hose when the truck is off? Should I prepare for oil to come out of the attached hose and two transmission holes? Since I’m replacing this in my driveway, I’d like to know what to expect.

Thanks!

 

[mwilson]

Hey Guys,

I have a 2005, 2500 QC, Cummins, with a 4 speed auto transmission (ATS). I think its a 48RE? (not sure, but I'm sure its not critical for what I'm asking).

Anyway, I have a an oil cooler hose (that is both rubber and metal) that is connected to the driver’s side of the transmission from just above the reservoir to a small oil cooler (I beleive) on the side of the transmission. Its hose #1 in the attached picture. Mopar Part 52028920AH. On the part, the connectors look straight forward as to changing.

Question: Does gravity drain this hose when the truck is off? Should I prepare for oil to come out of the attached hose and two transmission holes? Since I’m replacing this in my driveway, I’d like to know what to expect.

Thanks!
View attachment 87999

I'm going to warn you before you start, use a back up wrench when you remove the line from the cooler on the block. I think that several people have fractured the internals of their coolers by not using the second wrench. Later on the cooler fails inside and will put antifreeze in the transmission and vice versa.

Look at this thread from my hose change on the '06.

https://www.turbodieselregister.com...egret-it-later)&highlight=transmission+cooler

Mike.

 

[mwilson]

As far as fluid loss, I honestly can't remember. I did take it apart at the check valve first so with a catch pan under that area you should get most of it. A little more will pee down your arm while laying under the truck removing the line from the block mounted cooler.

Mike.

 

[Ozymandias]

Yes there ist a fluid loss, maybe a pint or so, changed this line last winter.

Be sure to use the second wrench!

 

[McDermott]

I really appreciate the replies and heads up guys!

Also, if anyone is looking, I bought my part for like $64 (part + ship) off ebay. Link below. Its a stock Mopar hose. Dealer wanted $79 + tax, so it was nice to save a few bucks.

Click for EBay Link Here:

 

[McDermott]

As a follow up, I replaced this transmission cooler line at a great local Denver shop called DIY Automotive. GREAT business. Its my number one choice for more complex jobs just in case I get stuck on something. Incidentally, I did a tie rod end there too while I had the truck up on the lift.

I'm glad i didn't do it at home. Lost about a quart overall. Messy and I can't beleive how mickey mouse flimsy the aluminum transmission lines are. Anyway, its done. Thanks for the help everyone.