Water Pump Install

Joined
Sep 16, 2005
Messages
92
Location
Houston, TX
I am replacing the waterpump on my 74 FJ40 with an F engine.

1. Anyone know the torque setting for the pump bolts to the engine? Or just tighten them well.

2. On the gasket between the water pump and the engine, is it ok to just put a thin coat of silicone on both sides? Anyone recommend anything else?

3. Torque setting on the bolts from the thermostat housing to the engine?

Thanks
 

brian

SILVER Star
 
 
Joined
Feb 7, 2003
Messages
9,562
Location
lebanon,pa
both thread into cast iron. i torque those to about a grunt&half with a 3/8 rachet.
 
Joined
Jan 22, 2003
Messages
8,121
Location
Kansastitty
FSM does not specify. Go with Brian. And on the gasket sealer, I generally do a thin coat on both sides, let it tack and go.

Ed
 
Joined
Aug 23, 2008
Messages
191
Location
Alaska and Oregon
Rather than start a new thread I thought I would breath new life into this old one. Does anyone have "how to" list with pics on replacing the water pump? I am mostly concerned with the radiator and fan removal for the install.

Robert
 
Joined
Feb 8, 2006
Messages
2,479
Location
Vancouver (not BC), WA (not DC)
No need to remove the radiator.

Draing radiator. Take the shroud off. Take the fan blade off - 4 bolts. Take the belt off. Remove the bolts holding the water pump on and remember where they go. Take off / pry off water pump. Scrape every bit of gasket off the surface of the block. Put new gasket on. Put water pump back on. Put fan back on. Fill radiator. Check for leaks. Put shroud back on.

Done. Oh, and don't buy a cheap reman water pump unless you want to do this again in 6 months.

:cheers:
 
Joined
Aug 23, 2008
Messages
191
Location
Alaska and Oregon
CRAP.....Thats what I did! :doh:

I just bought the NAPA reman and put it in, well maybe it will last longer? thanks for the info the install went smooth.

Is there an engine drain that anyone has a picture of? I spent two hours cleaning up radiator fluid after I drained the radiator I didn't realize how much would come out of the block (was I supprised.) after pulling the pump.

Thanks
 

Pete

 
 
Joined
May 19, 2004
Messages
398
Location
Midwestern Flatlands
CRAP.....Thats what I did! :doh:

I just bought the NAPA reman and put it in, well maybe it will last longer? thanks for the info the install went smooth.

Is there an engine drain that anyone has a picture of? I spent two hours cleaning up radiator fluid after I drained the radiator I didn't realize how much would come out of the block (was I supprised.) after pulling the pump.

Thanks
I've had good luck with NAPA remanufactured water pumps and brake and clutch master cylinders. I wouldn't worry about it. I believe it was the water pump (or maybe it was the brake master) that had the ACCO casting on the body...ACCO is the mark for Aisan, the OEM manufacturer. My experience is that NAPA parts are much better than AutoZone and some of the other auto parts stores. I did have to make a slight mod to the pulley on the shaft to fit my '77 but that was easy. I think the hardest part of water pump replacement that I and others I know have faced but that no one here has mentioned is getting out the old bolts. As someone said, they thread into cast iron and often get pretty corroded so that they are easy to twist off. Use plenty of Liquid Wrench or equivalent (not WD40!) a day or so before. The best stuff I've found is home brew Old Red (thanks Mark W!) that is equal parts of kerosene (or diesel fuel), paint thinner (or mineral spirits), acetone, and automatic transmission fluid. When you reassemble, use anti-seize on the bolt threads. I usually use copper coat on the gaskets but a little silicone is OK (don't go overboard).
HTH
Pete
 

mrjay2u

 
Joined
Mar 6, 2007
Messages
415
Location
Western Washington
****.....Thats what I did! :doh:

I just bought the NAPA reman and put it in, well maybe it will last longer? thanks for the info the install went smooth.

Is there an engine drain that anyone has a picture of? I spent two hours cleaning up radiator fluid after I drained the radiator I didn't realize how much would come out of the block (was I supprised.) after pulling the pump.

Thanks
The engine drain is on the drivers side of the block between the oil pressure sending unit and the firewall. No pics sorry
 
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