Water Pump Pulley Do-over - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Legolas894 · 09-27-2009, 01:35 PM

Well, last Thursday, driving the kids home and heard a thump under the hood, quickly followed by the GENERATOR light and temp gauge going real hot. Thought it was just a belt but when I pulled it over the water pump pulley was just dangling and the belt was fine.

So, flat bed home. Pulley broken. Where do you get such a thing? Fortunately there was a swap meet on Saturday. Looked high and low and found a MOPAR pulley that was just about right. I had to drill another set of four holes since the MOPAR pattern was off just enough not to work.

It wobbles a bit more than I'd like but until I find an exact replacement, it'll have to do. Here's some pics

Longhorn Man · 09-27-2009, 03:12 PM

keep the RPMs down with the wobble... and be happy the fan didn't go through the rad... thats what they normally do whrn the come off the engine.

Legolas894 · 09-27-2009, 07:28 PM

Quote:

Originally Posted by Longhorn Man

keep the RPMs down with the wobble... and be happy the fan didn't go through the rad... thats what they normally do whrn the come off the engine.

Yikes! I hadn't thought of it going through the rad but I guess it is going pretty fast...

mclairmo · 09-27-2009, 10:19 PM

I have never seen a pulley do that before. I know some pulleys had a reinforcement washer/disc under them. Maybe you need one?

Longhorn Man · 09-27-2009, 10:21 PM

turning fast, and pulling air in towards it, which would naturally thrust it forward... like a propeller on a prop driven plane... see it all the time on the trucks at work and in the rad shop.

unclewatts · 09-28-2009, 01:00 AM

Quote: "So, flat bed home. Pulley broken. Where do you get such a thing?
It's wrecking yard time!

Legolas894 · 09-29-2009, 07:23 AM

Uncle Watts-No wrecking yards near me have the classic stuff so I was lucky to find something close at the swap meet. It was a 90 minute drive but well worth it for $5. Plus I got to see a lot of great cars and even a few trucks.

**Boog** · 09-29-2009, 07:39 AM

Fortunate for you Legolas it was the center of the pulley that broke out and not the water pump flange. Since the fan and spacer were still securely bolted in place they stayed put and kept the pulley from coming off completely. Don't know when I've seen a pulley fail like that.

rlm316 · 09-29-2009, 07:40 AM

Post a "Want to Buy" add in the parts forum. Someone will come up with one for you.

Legolas894 · 09-29-2009, 08:45 PM

Boog-After 42 years, I figured it didn't owe anything to anybody!

I'm thinking about replacing the water pump too when I have some cash. It can't be original too. I've replaced the water pump on my '95 Astro and '94 Caprice so I figure 10-15 years is probably tops unless the quality in '67 was much higher. The PO may have replaced it a few times as well.

The rad is definitely a must-do but it might have to wait until next summer.

09-27-2009, 01:35 PM	#1
Legolas894 Chemist under the hood... Join Date: Apr 2009 Location: Fort Erie,ON, Canada Posts: 617	Water Pump Pulley Do-over Well, last Thursday, driving the kids home and heard a thump under the hood, quickly followed by the GENERATOR light and temp gauge going real hot. Thought it was just a belt but when I pulled it over the water pump pulley was just dangling and the belt was fine. So, flat bed home. Pulley broken. Where do you get such a thing? Fortunately there was a swap meet on Saturday. Looked high and low and found a MOPAR pulley that was just about right. I had to drill another set of four holes since the MOPAR pattern was off just enough not to work. It wobbles a bit more than I'd like but until I find an exact replacement, it'll have to do. Here's some pics Attached Images __________________ Current fleet: 2013 GMC Sierra, 5.3L, 4x4 1988 GMC Sierra, 305, Auto 1984 Jeep Grand Wagoneer, 360 V8 1997 VW Cabrio, 2.0L 2017 Toyota Rav4, 2.5L Stuff I wish I still had: 2013 Toyota Matrix [RIP] 1967 GMC 910 Fleetside, 283 V8 [1st Love-SOLD] 1987 Jeep Cherokee Laredo 4X4, 4.0 I-6 [SOLD} 1994 Chevrolet Caprice Classic, 5.7LV8 [SOLD] 1995 Chevrolet Astro AWD, 4.3L V6 (RIP) 1998 Chevrolet Suburban 4x4, 5.7L V8 [SOLD]

09-27-2009, 03:12 PM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Water Pump Pulley Do-over keep the RPMs down with the wobble... and be happy the fan didn't go through the rad... thats what they normally do whrn the come off the engine.

09-27-2009, 10:19 PM	#4
mclairmo Registered User Join Date: Jan 2006 Location: Take Off Posts: 1,908	Re: Water Pump Pulley Do-over I have never seen a pulley do that before. I know some pulleys had a reinforcement washer/disc under them. Maybe you need one?

09-27-2009, 10:21 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Water Pump Pulley Do-over turning fast, and pulling air in towards it, which would naturally thrust it forward... like a propeller on a prop driven plane... see it all the time on the trucks at work and in the rad shop.

09-28-2009, 01:00 AM	#6
unclewatts 70 Chevrolet=Obsession Join Date: Jun 2009 Location: nice ca Posts: 1,067	Re: Water Pump Pulley Do-over Quote: "So, flat bed home. Pulley broken. Where do you get such a thing? It's wrecking yard time! __________________ I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner)

09-29-2009, 07:23 AM	#7
Legolas894 Chemist under the hood... Join Date: Apr 2009 Location: Fort Erie,ON, Canada Posts: 617	Re: Water Pump Pulley Do-over Uncle Watts-No wrecking yards near me have the classic stuff so I was lucky to find something close at the swap meet. It was a 90 minute drive but well worth it for $5. Plus I got to see a lot of great cars and even a few trucks. __________________ Current fleet: 2013 GMC Sierra, 5.3L, 4x4 1988 GMC Sierra, 305, Auto 1984 Jeep Grand Wagoneer, 360 V8 1997 VW Cabrio, 2.0L 2017 Toyota Rav4, 2.5L Stuff I wish I still had: 2013 Toyota Matrix [RIP] 1967 GMC 910 Fleetside, 283 V8 [1st Love-SOLD] 1987 Jeep Cherokee Laredo 4X4, 4.0 I-6 [SOLD} 1994 Chevrolet Caprice Classic, 5.7LV8 [SOLD] 1995 Chevrolet Astro AWD, 4.3L V6 (RIP) 1998 Chevrolet Suburban 4x4, 5.7L V8 [SOLD]

09-29-2009, 07:39 AM	#8
Boog laying low Join Date: Mar 2001 Location: Searcy, Ark. USA Posts: 13,186	Re: Water Pump Pulley Do-over Fortunate for you Legolas it was the center of the pulley that broke out and not the water pump flange. Since the fan and spacer were still securely bolted in place they stayed put and kept the pulley from coming off completely. Don't know when I've seen a pulley fail like that. __________________ Boog 69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver primer is finer 91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said. I stand for the flag and kneel at the cross

09-29-2009, 07:40 AM	#9
rlm316 Registered User Join Date: Aug 2006 Location: Woodstown, NJ Posts: 669	Re: Water Pump Pulley Do-over Post a "Want to Buy" add in the parts forum. Someone will come up with one for you.

09-29-2009, 08:45 PM	#10
Legolas894 Chemist under the hood... Join Date: Apr 2009 Location: Fort Erie,ON, Canada Posts: 617	Re: Water Pump Pulley Do-over Boog-After 42 years, I figured it didn't owe anything to anybody! I'm thinking about replacing the water pump too when I have some cash. It can't be original too. I've replaced the water pump on my '95 Astro and '94 Caprice so I figure 10-15 years is probably tops unless the quality in '67 was much higher. The PO may have replaced it a few times as well. The rad is definitely a must-do but it might have to wait until next summer. __________________ Current fleet: 2013 GMC Sierra, 5.3L, 4x4 1988 GMC Sierra, 305, Auto 1984 Jeep Grand Wagoneer, 360 V8 1997 VW Cabrio, 2.0L 2017 Toyota Rav4, 2.5L Stuff I wish I still had: 2013 Toyota Matrix [RIP] 1967 GMC 910 Fleetside, 283 V8 [1st Love-SOLD] 1987 Jeep Cherokee Laredo 4X4, 4.0 I-6 [SOLD} 1994 Chevrolet Caprice Classic, 5.7LV8 [SOLD] 1995 Chevrolet Astro AWD, 4.3L V6 (RIP) 1998 Chevrolet Suburban 4x4, 5.7L V8 [SOLD]

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