View Single Post

Leaky transmission fitting - HELP!
Old 12-25-2004, 01:43 AM   #1 (permalink)
WBusa
Offline
Join Date: Jul 2004
Location: SW Pennsylvania
Posts: 350
Exclamation Leaky transmission fitting - HELP!

Arrgh...one of the old metal quick-disconnect fittings on my transmission cooling lines (driver's side of trans, at rear of sump pan) has been slowly weeping since I bought The Beast six months ago. Since I installed my #6 TST plate last week the fitting has gone over to crying like a baby (coincidence? I think not). Anyway, so I know I need to replace the lines in the long run, but it being Christmastime and all (checkbook tapped out), for the moment I just want to replace that one fitting. I've read this thread: 94 Auto trans leak question
in which Joe G. describes replacing the fitting with a conventional compression fitting, but I have some questions:

1. What size do I want? I'm guessing the line is 1/2" and the hole in the tranny is 1/4 NPT?

2. Where the heck do I find a compression fitting like this? Ace Hardware? NAPA? A hydraulic hose shop? Eh?

3. Are brass fittings OK?

4. Dis/assembly: I'm guessing I disassemble the old fitting by spreading the wire and pulling it apart. Then I saw the end of the metal line off, back of the bulge in the metal line, and somehow or other I deburr the cut end. Then I slip the compression nut and sleeve on the line, screw the other side into the NPT hole in the tranny, then screw the two sides together. As I understand it, you tighten a compression fitting until you feel a sharp increase in torque, then maybe one turn further. Have I got this all right?

Obviously I'm new at this compression fitting business. Answers to the above four questions will be more than welcome.

Merry Christmas, y'all! Keep yer Cummins hummin in '05!
__________________
1995 4x4 2500 auto 169K mi. KDP KO'd. #6TST. aFe ProGuard. LarryB contacts. Mag-Hytecs. Dipricol boost, trans & EGT pre-turbo. Winter: Cooper Discoverer M+S; Summer: Hankook Dynapro AS RH03 (245/75). Bilstein 2549/2550. Optima reds 34/78. Literider tonneau. Mobil Delvac 1300 15W-40, Shell SPIRAX 80W-90, Stanadyne additive.
  Reply With Quote