Thread: How bad is it - lost ATF

My personal preference (and I'll get to it one day) would be a pressure sensor and temp sensor on both lines. Overkill I know but to do it with a 4 screen digital display, taking comparisons of hot (outlet temp) and post cooler temps and same for pressures. Display this as an alternating display or have set parameters with an alarm and displays the closest to out of range for both temp and press.

Additionally have on the same display engine coolant and water temp and oil press as well. displayed in the same way.

But keeping it simple, pressure and temp sensor on the outlet (to cooler) line. The sump doesn't see pressure but the outline sees the highest temp and is the first route of fluid outside the box so it should show any pressure drop the soonest, even if it drops through an internal leak (though this would admittedly be a small drop). You could cut the steel line and get a compression fitting or braze/weld threaded fittings on for something inline to fit the sensors into.

Originally Posted by clubagreenie

And as for doing any marching. I put my 10 in marching for better DI's than you'd ever aspire to be.

There's a reason I wasn't made an engineer. I can shoot.

mate, you're out of your league here...

Firstly, Accusing any DI/RI of only being a better DI/RI than I aspire to be would have had you drilled so long and hard you'd have sworn your name was makita for the same sort of reason that saying "your nicer than hilter" to a jew is unlikely to be received as a compliment

I will give you credit though, you're right about there being a reason you weren't made an engineer. You just needed to finish your post a sentence earlier.

Originally Posted by Pinelli

A few years back, I put in a Disco 1 sump with the dipstick. I believe I can replace that and put in either a temperature or oil pressure sensor. Any thoughts on which would be more useful for monitoring the box on travels?

leave the disco one sump with the dipstick on it in place the auto has test ports on it for fluid pressures instead of putting extra joints into the cooler lines use one of those for your pressure transducer and then hook up a thermocouple to the box or line somewhere.

unless you're tryiing to keep the box on the bleeding edge of the temps for the oil or are going to be constantly working it hard monitoring the pressure for loss and a weekly/monthly check of the condition via the dipstick will be more use to you than another temp gauge to obsess over

Pinelli

I have a P38 sump with dipstick on my D2.

I clamp a thermocouple to the ATF line leading to the cooler and monitor transmission temp that way.

As for pressure gauge - the snap on lines just pop off from the cooler when the pressure gets too high :-)

Bob

Is there a way these pipes can be made more reliable? For example are there better connectors than yhe crimps from rubber to steel hose and same with the push on fitting at the cooler?

IMO having crimps to steel barbs is the way to go. That way you can carry some spare hose and do a field repair if needed.

I did this on my D1. The hydraulics bloke sold me some steel barbs to weld to the steel pipes.
He also supplied the rubber hose and with the fittings supplied, he said that I would not even need clamps, just push them on.

I did use clamps though.

Originally Posted by d2dave

IMO having crimps to steel barbs is the way to go. That way you can carry some spare hose and do a field repair if needed.

I did this on my D1. The hydraulics bloke sold me some steel barbs to weld to the steel pipes.
He also supplied the rubber hose and with the fittings supplied, he said that I would not even need clamps, just push them on.

I did use clamps though.

Makes sense, but does the d2 run at higher pressure compared to the d1?

I had one go in the plenty highway, replaced by Land Rover in Alice Springs. About a week later the new one went in Darwin. After the stuff around from Darwin Land Rover, I ended up getting Pirtek to make a new clamp. It travelled all the way through the Kimberly, down the West Coast including Karijini, Coral Bay, Perth and back to Adelaide. That was 2 years ago and no problem since.

Cheers

Originally Posted by DanDisco2

Makes sense, but does the d2 run at higher pressure compared to the d1?

There is not much pressure in any vehicles transmission cooling pipes.

Even if there were, the stuff the bloke sold me was for high pressure hydraulics.