water pump nut with chain assist (thanks to Old Goat for the hint)

[Sergey]

Water pump on my old truck gave up. I don’t even remember when I replaced it last time, so old it was. 25+ years of service is not bad.

Anyhow, I would not proceed myself with water pump replacement due to fan clutch nut obstacle.

Reading this forum helped a lot. BIG THANKS to Old Goat for ingenious hint to use chain to lock pulley!

In this post Stubborn waterpump fan nut | Diesel Truck Forum - Oilburners.net Old Goat gave me the solution for releasing fan clutch nut the easy way.

My only modification of Old Goat method was using a thicker chain (local hw store cut a ~ foot of it). And, no hammer needed ! Just a breaker bar ½” did it, a good pull and old rusted nut came loose. Please see photos to illustrate.

Useful : Chain method works both ways – for loosening fan clutch nut and for tightening the nut as well. Really good suggestion, thanks Old Goat.

Thanks
Sergey

 

[Old Goat]

Glad what I posted helped you out.
That is a pretty slick simple way to hold it.
I haven`t used it with the engine installed.
Mine was sitting on the floor w/o any Belts and was getting frustrated on how to hold that stupid Pully from turning.
That lite duty Chain I posted worked ok, Nut wasn`t on all that tight, one whack of the hammer on the wrench and it loosened.

The Nut size is 1 7/8".

Fan clutch nut size

I've swapped a half dozen water pumps on these idi's but this one's killing me. I'm going to try a loaner fan clutch holder, as soon as i can come up with the deposit. I want to check on a wrench to fit that nut while I'm at it. Anyone know what size it is?

www.oilburners.net

Goat