Thermo Fan

Yes, any TD42 one can be rebuilt.

Hi truckster
Thanks for that
Ray

did this job only the other week BUT these coments apply only to an 80 series fluid coupler however they should be of simular desighn
1)removing coupler is easy 4 bolts that hold it to the water pump pulley no belts need removing however you may need to remove the radiator shroud to take out the coupler including fan
2)seperate fan and coupler
3)go to toyota dealer and ask for the silocone oil (about 10 - 11$) I used 1.5 tubes
4) rumer has it some fluid couplers have bungs 80 series tojos do not so I seperated the 2 halves. They are held together by about 8 philips heads screws DO NOT ATEMPT DO UNDO THESE SCREWS WITHOUT AN IMPACT DRIVER LIKE I DID) you may round them
5) squeeze as much oil in as you can
6)reassembly oppisite to pull down

worked for me. Another option is to go to coventrys and buy another aftermarket unit for around$200

The only thing I can add to that is when i pulled the 2 halves of the one off my GU apart, the long, thin rubber "O" ring/gasket gizmo expanded and i couldn't get it back into the groove from which it came. It is about 1" (25mm for you young blokes) too long.
I've still got the whole hub at home, but bought a new one from Nissan for about $320-. I'd actually done that first and pulled the old one apart in an effort to learn how they work and possibly rebuild it for next time. I haven't tried to buy a new rubber for it yet, but someone on here told me that the type of rubber that is used in these sorts of applications is designed to expand once it's been used so that it will fill the area it's designed for; making it a throw-away item once it's been removed.

Hi Every One
Thanks for the tips, I will attack it this afternoon.
Ray