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Need help on the best way to replace water pump belt on 1967 350HP - two belt set up. Is the easiest way to remove the lower pully or the fan assembly and pully? Other ideas?
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Re: 1967 Belts
It's easier to remove the fan & pulley, install the new belt, put the fan pulley back on the hub, and re-install the fan. -
Re: 1967 Belts
I assume you mean the short belt that goes between the crank pulley and the waterpump pulley. Here's how I did it on my '66 327/350HP:
First, I got the belt from Quanta. There are actually two belt sizes, one slightly bigger than the other. Since I did not know exactly which would fit, Quanta sends both, and you send back the one that does not fit. I think mine was the shorter one.
Remove the fan and clutch assembly, and the upper pulley. These are attached by 4 bolts which screw into the waterpump pulley flange. The waterpump flange has a rounded shaft in the middle that centers the pulley and fan clutch.
Taking the belt and waterpump pulley only, put the pulley on the waterpump flange and put one bolt only through one pulley bolt hole into the waterpump flange. Turn the bolt in only about 1/4 inch. Position that bolt at the 8 o'clock position on the waterpump flange (as you look at the front of the engine) by turning the waterpump. Do NOT put the hole in the center of the waterpump pulley over the shaft in the center of the waterpump flange, but let it dangle loosely from the one bolt. The bolt will be at the 12 o'clock of the pully but at the 8 o'clock position of the waterpump flange.
Put the belt in the crankshaft pulley groove (mine is on the forward, or outside groove) and put it over the same groove of the waterpump pulley (still dangling from the one bolt.
Rotate the waterpump pulley (but not the waterpump) counter-clockwise until it takes up the belt slack. You should not be able to go so far that the pulley center hole fits over the waterpump center shaft. If you can, the belt is too long and will slip.
Holding the waterpump pulley with both hands, one at 3 o'clock and one at 9 o'clock and keeping the belt taut, rotate the pulley AND the waterpump flange CLOCKWISE until the bolt is now at the 12 o'clock position of both the waterpump flange and the pulley. It will get tougher to turn as the bolt gets close to 12 o'clock (but I did not have to turn the crankshaft), but once it is there you should be able to fit the center hole in the pulley over the center shaft of the waterpump flange. If you cannot get the bolt to 12 o'clock you can take a socket and breaker bar and turn the crankshaft pulley clockwise by it's attaching bolt.
The belt should be nice and snug, and because one bolt hole and the center hole are now aligned, the other three bolt holes in the pulley are also aligned with the threaded holes in the waterpump flange.
Remove the one bolt. The pulley with the belt installed will stay there because the center pulley hole is a tight fit over the waterpump centering shaft. Put on the fan and clutch assembly and install and tighten the four bolts.
Hope that helps,
LarryComment
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