very bad day took my truck and brandnew trailer back to the dealer because trailer brakes locked up on me. The dealer assured me that it wasnt the trailer it was my truck wiring well after $75 and a new brake box they still didnt work. It took 4 hrs to track down the problem and it was the trailer. When I got back home I noticed something leaking I figured it was my fuel heater no big deal but to my suprise it was the lift pump and a hole in my tranny cooler line!!!!! So what is the best way to fix the tranny line do I splice it (the rest of the line is a little suspect) can you buy new or do I need to have them made or use hydraulic hose. Cheapness is a factor.

 

You can buy them premade. Call the parts stores or a tranny shop.

 

You can splice it for a quick fix, but it will fail somewhere else later.

 

cut it with a mini tube cutter rather than a hack saw.

tks,
rjm

 

what is the outside diameter of tranny line so I know what size the splicer needs to be.

 

I know on the 99 it is 1/2" tube.

 

Its 1/2 OD. on my 89.

 

I cut mine and installed a transmission oil temp thermal bulb using a compression branch tee. 1/2 inch tubing on both runs and 3/8 inch NPT on the branch. Might be an oppurtunity.

 

check out this thread, i have the pic and pn from Mcmaster carr.
https://www.dieseltruckresource.com/...d.php?t=116888

 

One time on the way home from the firehouse I stopped by a store. As I was leaving, a buddy came up and asked me why my truck was bleeding. Huh?

Where the trans cooler lines pass the engine block, they're secured by a couple of steel straps held by oil pan bolts. With time and vibration, the straps had worried holes into the oil lines.

As a temporary fix I took a short piece of rubber heater hose and a small worm-screw type clamp. I split the hose and placed it over the hole as a patch held in place by the single clamp. Worked great.






OK, I'm lying. Temporary shemporary. The patch is still there some months later while I figure out how to make my own replacements from OEM type steel tubing without breaking my tubing benders (soft copper type). My current thinking is I'll have to anneal where I need to make the bends.


The patch is still a good fix to get you home.

 

well I ended having a leak in the same place as bc847 had on his truck I ended up cutting out about an inch long section and putting 400 psi tranny hose between the two and overlapped it about 4inches each way and secured it with 4 hose clamps no leaks yet. The previous owner did the same patch as bc847 and it held until now and I have had the truck over a year so I am keeping my fingers crossed. as my dad says so far so good so what!!!!!