Re: [Amc-list] Getting at the water pump - '65 American 330 w/196 OHV

[Frank Swygert <farna@xxxxxxx>]

Parts consolidation struck me in the late 90s when I tried to order a water pump too! There are at least three versions of the iron 196 water pump and one for the aluminum 196. There's one that has four bolts to the block, two that have five. The two with five have different radiator and/or heater outlet locations. Then there are two different shaft lengths. Americans use a short shaft and Classics use a long one. The fan hub on a long shaft can be pressed back further, but you have to be careful not to crack the impeller (then cut the shaft off). A good machine shop will do it, but warn you they won't be responsible if the impeller breaks (could slip or something). 

You would be lucky if it's just the gasket. The seal can go and the bearing still be fine. There's a hole in the bottom of the housing where the "nose" comes out. Make sure the water isn't coming from that weep hole. If it's not then the gasket should fix it. 

You might want to send your in to be rebuilt even though you have a new one, keep the second one for a spare. That's the only "likely to go" maintenace item that's hard to get in a pinch. If a starter or generator goes they can be repaired or rebuilt by any auto electric shop, and are standard six cylinder Chevy or Ford items anyway. Chances are a good auto electric shop will have a rebuilt unit on hand if yours can't be fixed, or can get one overnight. So you'd be stuck a couple days at most. The water pump might take a week or more to get the right one, as you found out! 

Keep one bolt in the fan finger tight as you loosen the others to keep the fan from spinning on the last bolt. That's about all I can add to what Joe said. 

------------
Date: Thu, 13 Mar 2008 12:28:26 -0400
From: "Bruce Griffis" <bruce.griffis@xxxxxxxxx>

Okay, I have 2 replacement water pumps on hand. One off e-bay, appears
NIB, box states for
'65 American 196 OHV. Cool! The other from Autobone. I ordered a reman
unit - and it
appears just plain wrong.

Radiator hoses are off. Thermotat's housing and thermostat is off (I
replaced the thermostat
and gasket, but didn't seal it properly - so need to replace the
gasket). Fan belt is off.

Looking at the front - I have a 4 bladed fan, with 4 bolts holding it
on. Behind that is the pump.
I thought the pump was going as I had a coolant leak coming from the
timing chain cover, and
a gravelly kind of sound wen running. I'm guessing the leak is from
the water pump gasket. I'm
not getting a lot of play when trying to move the fan back and forth -
and when I turn it, I can
hear it pumping coolant. Anyway - since I have a new pump, I'll
replace it since I have to
replace the gasket anyway.

Question: do I remove the 4 bolts on the fan to get the fan off the
water pump? (I'm guessing
so) Any tricks for holding the fan still while I remove the bolts?

-- 
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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