rocksteady530

I was in the process of pulling out my radiator fan and in trying to bend in that clip on the right it broke the top of the Automatic Transmission Oil Cooler Thermostat part that connect to the house.

It looks the top is a clip but I can't find a part number for it.

Question: Do I have to replace the whole Automatic Transmission Oil Cooler Thermostat unit or is that top clip replaceable? Has anyone done it and what do I need to look out for other than draining the coolant.

I included a picture of the section that looks like it could be separate from the Automatic Transmission Oil Cooler Thermostat.

DanL

It looks like you need to replace the entire thermostat unit (approx. $80).

rocksteady530

Yeah thanks..that's what it looks like. Will have to take the hit with the stealers tomorrow since I need to get that replace ASAP.

turboawd

how exactly were you trying to "bend in that clip"? the clip appears to slide out to release the 'nipple', which looks like you can replace, but may only be sold with the whole manifold.

rocksteady530

Turboawd, let me clarify, when I say "bend in that clip" I meant the bracket on the fan (see attached diagram) that can bend inward/outward (depending on your view) in order for you to lift out the fan.

When trying to bend that bracket you have to squeeze it between two hose and in doing so it snap the connector/nipple to the A/T thermostat that one of the hose connected to (see my original diagram in the OP). The "clip" on the thermostat itself looks like it should be able to be removed and get the broken nipple out but so far it looks like they are sold as one part. Can't find a part number for that nipple.

So I am looking into how to remove teh A/T Thermostat or any DIY.

turboawd

gotcha.

rocksteady530

Closure to my OP. Bit the bullet and got the part from the dealer and replaced it today. There are two parts needed. The Thermostat itself and the rubber seal (you could use the existing one). The job itself is not hard..the key is to drain the coolant and remove the clips connecting the hose to the unit.

Quetara

The same thing happened to me when trying to reinstall the fan. Big bummer, b/c after that I would have finished the job. I guess the plastic becomes brittle over time with heat-cycling and snaps off easier.
I know this is an old thread, but if somebody has found a link to useful repair instructions, I'd be grateful.
525i E60 N52 2007 ~180k-miles

seanjordan20

I don't know if you'll find repair instructions since it's a fairly easy DIY. You unhook the the 2 hoses and unbolt the thermostat. Took me all of 5 mins to do. Ensure you have new gaskets when doing it

Quetara

When this plastic hose bib broke off, some fluid ran out onto the asphalt until I plugged it. My initial assumption was that this fluid coming out of the plastic ATC thermostat housing would the regular radiator cooling fluid, and it should have dried up on the asphalt. But it didn't dry up, looks like an oil stain on the ground.

So, is this transmission fluid/oil?
How to tell?
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