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  #1  
Old 10-21-2009, 04:51 PM
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Location: Greensboro, NC
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Water pump stuck, need to remove

I decided that a water pump replacement was In order so I took the day to go ahead and do it.

After getting most of everything off I am left with one bolt that doesn't have adequate clearance for removal. My manual tells me that I can rotate the pump so that a notch allows removal of this bolt. The problem is that I can't rotate the water pump. What shall I do?

I am doing this repair while on vacation and I leave this beach house in 3 days.

Any help would be greatly appreciated.
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1982 MB 300D Turbo 360k daily driver
1977 Pontiac Firebird Trans Am (only goes in reverse)
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  #2  
Old 10-21-2009, 04:58 PM
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Are you sure you aren't trying to remove the water pump housing? If you are just replacing the pump, there is no need to remove the housing from the block; just remove the pump from the housing.

Last edited by tangofox007; 10-21-2009 at 05:04 PM.
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  #3  
Old 10-21-2009, 05:26 PM
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My manual told me to remove the housing and the only reason I tried was because the pump wasn't coming off.

So how do I remove the pump after taking off the 5 bolts? It's not coming out easily.
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1982 MB 300D Turbo 360k daily driver
1977 Pontiac Firebird Trans Am (only goes in reverse)
1947 Dodge pick-up (has old 6v(?) system and won't start)
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  #4  
Old 10-21-2009, 05:30 PM
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My manual told me to remove the housing and the only reason I tried was because the pump wasn't coming off.

So how do I remove the pump after taking off the 5 bolts? It's not coming out easily.
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1982 MB 300D Turbo 360k daily driver
1977 Pontiac Firebird Trans Am (only goes in reverse)
1947 Dodge pick-up (has old 6v(?) system and won't start)
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  #5  
Old 10-21-2009, 05:31 PM
DeliveryValve's Avatar
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Location: Central California
Posts: 4,102
Take a hammer to it. Tap it downward it will pop off.
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  #6  
Old 10-21-2009, 06:02 PM
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Quote:
Originally Posted by DeliveryValve View Post
Take a hammer to it. Tap it downward it will pop off.
use a big flathead screwdrive, gently hammer it in then twist or pop it off.
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  #7  
Old 10-21-2009, 06:30 PM
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Location: Kona, Hi
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IT sounds crazy but they are right. Smack it hard and it will come off.
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  #8  
Old 10-23-2009, 10:05 PM
Dan Fernandez
 
Join Date: Jan 2005
Location: Monterey CA
Posts: 188
Funny- I am having the same issue (on almost the same day!) but on the other side of the US. I tried a hammer - now that I read this post I will try a little harder.

One other piece to add - I changed coolant in my 84 300 sd to Zerex a few weeks ago. Drove it about 200 miles then noticed a leak coming from below the water pump (coincidence??). When I released the bolts I had a lot of coolant come out, but it looks green (the older stuff) despite the fact that I thought I had flushed it almost completely by draining, refilling, running, draining, refilling, etc. about a dozen times. Any ideas on why I had old coolant inside?
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1984 Mercedes 300 SD 214 K miles. Runs on WVO ~ 22 mpg over 8 K on WVO
1997 VW Passat TDI 156 K miles. Uses biodiesel and diesel. ~ 41 mpg
1996 Mercury Villager gasser. ~ 20 mpg
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  #9  
Old 10-28-2009, 06:30 PM
Dan Fernandez
 
Join Date: Jan 2005
Location: Monterey CA
Posts: 188
water pump housing

The hammer worked!

However, due to a bolt in the water pump that sheared, I had to take off the housing as well, which is probably a good thing, given that the location of the original leak matches most closely with the gasket on the housing, and not the pump. Since I am having some trouble pulling out the sheared bolt, I may have to replace the housing....
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dannyf
1984 Mercedes 300 SD 214 K miles. Runs on WVO ~ 22 mpg over 8 K on WVO
1997 VW Passat TDI 156 K miles. Uses biodiesel and diesel. ~ 41 mpg
1996 Mercury Villager gasser. ~ 20 mpg
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  #10  
Old 10-28-2009, 11:24 PM
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Location: Out in the Boonies of Hot, Dry, Dusty, Windy Nevada
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Danny, there is an 84 300D at the Moss Landing PNP If you need to pull a WP Housing.

Charlie
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