gbvona
Member
My old water pump (1971 3500S NADA) leaks. Yep, it's the one with the viscous coupling and big fan (AC, y'know, which is long dead). I have a replacement pump with the big aluminium casting on the nose. The two pumps look essentially the same, though it appears that the new one has a slightly longer input shaft.
So how does one adapt the new pump to the old pulley arrangement?
(1) Gotta remove the big casting off the nose of the new one. My instinct is to heat it pretty well, then proceed with a press. Or?
(2) Gotta shorten the input shaft of the new one. Seems a hacksaw and file would work. Or?
(3) Here's the hard one. Gotta get the old nose (hub assembly for viscous unit) off the old pump, without damage. The shaft appears to be pressed into a blind hole in the hub assembly. Only idea I have is to saw the input shaft/hub assembly off the old pump, drill the shaft remnant down the center, thread the hole and use a bolt to pull the remnant out. Or??
Suggestions welcomed.
gbvona
So how does one adapt the new pump to the old pulley arrangement?
(1) Gotta remove the big casting off the nose of the new one. My instinct is to heat it pretty well, then proceed with a press. Or?
(2) Gotta shorten the input shaft of the new one. Seems a hacksaw and file would work. Or?
(3) Here's the hard one. Gotta get the old nose (hub assembly for viscous unit) off the old pump, without damage. The shaft appears to be pressed into a blind hole in the hub assembly. Only idea I have is to saw the input shaft/hub assembly off the old pump, drill the shaft remnant down the center, thread the hole and use a bolt to pull the remnant out. Or??
Suggestions welcomed.
gbvona