Transmission oil cooler lines

[Hungdaddy]

Hello,

I am looking for tips on replacing my transmission oil cooler lines, they are cracked and leaking a small amount of atf.

The lines nuts are seized on the lines and I'm assuming I'm going to have to cut the lines like I did for my power steering lines.

I tried a 17mm open end wrench and it started to slip so I stopped trying and have flare wrenches coming tomorrow.

The unions are rusty and I have new ones coming in the mail, but it's hard to get a wrench on them in that tight of a space.

Any tips from anyone whose done these before is appreciated.

Thanks

 

[BuffaloBass]

You almost have to drop the front cat to access this area well. I have NOT found replacements btw. I did find replacement PS hoses at NAPA. My trans lines need new rubber.

 

[Hungdaddy]

You almost have to drop the front cat to access this area well. I have NOT found replacements btw. I did find replacement PS hoses at NAPA. My trans lines need new rubber.

I have new oem replacement hardlines and unions, I will see if I can remove my rusty cat, I probably should anyway as the previous owner welded the 02 sensor on and the gasket is disentigrated causing a leak.

Thanks

 

[brillo_76]

I changed 2 sets of those hard steel lines on 1997 and 1998 single cat without removing anything more then the skid plates...

Yes cut the old lines off so you can put a socket on that nut. They will come loose easier that way where they hook unto the transmission. Then you can clean what you need to and replace the hard lines. Sometimes the brackets that hold them can be interesting to come loose.. Mostly if the heads are still on the bolts they will come out too..

Folks can also get replacement flange nuts and use that copper nickel to make your own replacement lines. Granted, one would have to get the nuts, and the flange tool to make your own out of copper nickel.. They would never rust out again.

Toyota I believe still sells the replacement transmission cooling lines. As that is where i bought my 2 sets from.


I agree there inst a lot of space to work on. But at least in the early years fed single cat rigs.. It can be done without removing the exhaust pipe...

 

[Hungdaddy]

I changed 2 sets of those hard steel lines on 1997 and 1998 single cat without removing anything more then the skid plates...

Yes cut the old lines off so you can put a socket on that nut. They will come loose easier that way where they hook unto the transmission. Then you can clean what you need to and replace the hard lines. Sometimes the brackets that hold them can be interesting to come loose.. Mostly if the heads are still on the bolts they will come out too..

Folks can also get replacement flange nuts and use that copper nickel to make your own replacement lines. Granted, one would have to get the nuts, and the flange tool to make your own out of copper nickel.. They would never rust out again.

Toyota I believe still sells the replacement transmission cooling lines. As that is where i bought my 2 sets from.


I agree there inst a lot of space to work on. But at least in the early years fed single cat rigs.. It can be done without removing the exhaust pipe...

Thanks for the info, got any tips on how to get the unions off the transmission?

I have replacements, I'm just not sure how they are threaded on.
Is it just screwed in and then the nut is like a lock nut?

Thanks

 

[phattyduck]

Thanks for the info, got any tips on how to get the unions off the transmission?

I have replacements, I'm just not sure how they are threaded on.
Is it just screwed in and then the nut is like a lock nut?

Thanks

You'll need to zoom in, but you can see it here:

The nut on the line screws inside the fitting on the transmission. You only remove the nut on the line, the parts in the transmission stay in place.

It works like a big brake line.

-Charlie

 

[brillo_76]

You'll need to zoom in, but you can see it here:

The nut on the line screws inside the fitting on the transmission. You only remove the nut on the line, the parts in the transmission stay in place.

It works like a big brake line.

-Charlie

Like the wheels on the transmission caddy... Those come in handy. I like ones with the jacks built into them as well.

 

[phattyduck]

Like the wheels on the transmission caddy... Those come in handy. I like ones with the jacks built into them as well.

That thing is pretty heavily customized for a few different tasks..

(years ago - the stuff belongs to a friend)

-Charlie

 

[brillo_76]

Nice piece of equipment charlie ..