Thread: 300 Tdi Oil leak near oil cooler lines or below and left of fuel lift pump

Originally Posted by isuzu110

Just checking on this job before I do it.

Do I need just two ESR1594L O rings for the cooler ends of the 2 hoses or are another two needed as well for the engine end ?

The engine/filter head end needs O rings too if you are pulling them.

There's an ungodly leak on mine ATM and it's one of the bloody Pirtek hoses leaking

Looks like a trip to Tamworth for a replacement hose.

Originally Posted by isuzu110

Just checking on this job before I do it.

Do I need just two ESR1594L O rings for the cooler ends of the 2 hoses or are another two needed as well for the engine end ?

Yes both ends of the oil cooler lines uses o-rings.

If you can get the ESR1549L part then great otherwise some Viton o-rings from Pirtek / Bearing Wholesalers etc.

and finally ...

The union nuts appear to be 24mm. Are they actually metric or an imperial size ?

Metric. Don't try too hard or overtighten will crush the sealing ring.

Pete

After reading this thread and degreasing and cleaning around the filter adapter i can now see oil is leaking quite badly out of the thermostat housing, i havent removed it yet since i dont have a new o-ring.
Hoping that i can get one from repco or burson's tomorrow morning as we are meant to be going away for a week, would rtv seal it if i built up both sides of the o-ring ?

Originally Posted by loanrangie

After reading this thread and degreasing and cleaning around the filter adapter i can now see oil is leaking quite badly out of the thermostat housing, i havent removed it yet since i dont have a new o-ring.
Hoping that i can get one from repco or burson's tomorrow morning as we are meant to be going away for a week, would rtv seal it if i built up both sides of the o-ring ?

If you are taking the thermo housing off, there is a really thin (and Hard as diamonds) paper gasket between it and the block.
I highly advise you buy some quality gasket remover, it is in a really awkward position a razor type scraper and a lot of patience is needed, watch you don't get gasket remover in your eyes or you will need a seeing eye dog.
I replaced all of the O rings on the pipe connections and in the spring loaded by pass or open valve also tape up the sensor thread, good luck, a bastard of a job, regards Frank. PS try and buy an original O ring and gasket, I couldn't buy one that matched aftermarket.

Originally Posted by loanrangie

After reading this thread and degreasing and cleaning around the filter adapter i can now see oil is leaking quite badly out of the thermostat housing, i havent removed it yet since i dont have a new o-ring.
Hoping that i can get one from repco or burson's tomorrow morning as we are meant to be going away for a week, would rtv seal it if i built up both sides of the o-ring ?

I'd be worried about getting silicone into the oil gallery, try and get the right O ring if you can and that t/stat is a bitch to get back square and straight in my experience, unless someone has a trick they can share.

Thermo housing isnt coming off only the part with the o-ring, its leaking badly so o-ring is ideal if i can get one tomorrow.
Luckily i have a complete spare housing if required, yeah it is pretty tight for space.