Changing the auto gearbox oil cooler pipes

Written by ralph on 16/07/2010. Posted in Repairs and ongoing maintenance

The MoT picked up a slight leak on these pipes as an ‘advisory’ so I was very keen to get these done especially before the trip to Tunisia.

Make no mistake; this job can be an absolute pig…..

I had to dismantle a fair bit of kit just to gain access to these pipes.  If you need to do this job, put aside at least a day (and maybe even 2) to get it all done.

It goes without saying that you can expect a lot of oil to run from these pipes so make sure you have something to catch it in.  We did a gearbox oil change at the same time.  Which does make a lot of sense as you can drain most of the system beforehand.

oil pipes 3

The pipes come as a complete unit with a flexible pipe swagged between two metal ends (part no. UBP101000 and UBP101010).  They follow a convoluted route from the gear box up to the oil cooler mounted up near the radiator.

dexter oil pipes

As you can see from this I had to remove the intercooler to gain access to the pipes and the oil cooler.   You can also see the significant benefit in using ramps with Dexter showing the easier access.   Doing this job on a driveway would have been a nightmare.

oil pipes 1

Access to the bottom of the oil cooler is very tight.  At first I thought I would have to remove the whole winch bumper arrangement.  I managed to remove the small ‘deflector’ screen which sits below the aircon fans and this gave just enough room to get a spanner in.  Here you can see one of the oil cooler connections.  These were a real swine.  They were seized on the pipe and I had to cut the pipe to be able to remove them.  Be prepared for the fitting onto the cooler to come away with the pipe fitting.  This can be cleaned up and refitted afterwards.

oil pipes 4

This gives an idea if the cramped space you have to work in to route the pipes correctly.

oil pipes 5

Here you can see how close the new pipes run to the extra intercooler pipes


oil pipes 6

This is the lower pipe fitting onto the gearbox.  This one is easy to access but expect to apply a lot (and I mean a LOT!) of force to get the old one undone.  You need a 19mm spanner for this.

oil pipes 8

The top connection is extremely awkward to get to and is just as tight.  It sits at an angle on the side near the top of the box.  It takes a lot of effort to get a spanner on it and undo it but it can be done.  At one point we thought the we would have to drop the gearboxSurprised but with perseverance we managed in the end. 

Refitting the top connection took forever and in the end we found the perfect tool….


It turned out that his hands we just small enough to get into the space, align the fitting and tighten it enough to stay on for a spanner.

I would like to express my thanks to Dexter (who did most of this job) and Mitch (for having small hands) of the 30th Signal Regiment L.A.D. at Bramcote.

Their assistance and the use of their facilities made this job so much easier.

I’m assuming that the old pipes were the original fitment.  If not they have been on there for at least 10 years.  So I now hope I don’t have to do this agian for another 10 years.  Who knows, by then I might have seen sense and bought a ToyotaWink.

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