Hello-

I'm doing a remove/replace on the water pump, the water pump-water pump housing gasket, the water pump housing-engine block gasket, and the thermostat housing-engine block gaskets, to take care of a leak that I see in the area. I already have the radiator out for repair so makes sense to me given I have good access with the radiator out.

I removed the water pump housing, with the water pump bolted in the housing, from the engine. I just removed the bolts that secure the pump itself to the housing but cannot separate the pump from the housing. I tried knocking it against my wooden workbench but don't seem to be getting anywhere. Am I doing something wrong or is the pump/housing seal typically difficult to break?

Maybe I should remount it to the engine block then come in with a block of wood and a hammer?

Thanks in advance

Rob
1979 300SD W116
400k

yep.

it should be a lot easier to separate with the housing attached to the block.

you sure it isn't leaking from the bleed hole on the bottom of the pump?

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Isn't that how you tell your pump is failing?

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83 SD

84 CD

yep.

just checking.

tom w

__________________
[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Thanks for the advice. The leak was a small trickle coming down the front of the engine block and dripping off the front of the oil pan.

I don't think the leak is coming from the bleed hole, checked that early on. But I'm taking the buckshot approach and replacing everything that could be suspect in the area. So I'm going after the water pump and thermo housing gaskets, connecting hose, and water pump itself. I figure the parts are cheaper than my time if I have to go back in there again. Current water pump has probably been in place for the last 100k miles/10yrs.

I've been soaking the housing in simple green, in hopes that it loosens up the gasket a little. Any other suggestions as far as solvents are concerned?

I'll try reattaching to the engine block, then hitting with hammer/wood block. I assume I strike it on the flange that bolts to the pulley and fan? Just want to make sure I don't cause damage to the housing.

Thanks-
Rob

You can use a rubber mallet also. But be careful when you smack it, because that pump will come flying out and might damage something. Strike the pump housing just before the pully/flange, not the pully/flange.

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1983 123.133 California
- GreaseCar Veg System