| [GMCnet] Engine water pump replacement [message #91056] |
Sun, 04 July 2010 11:51  |
Eddie Pettit
Messages: 71
Registered: May 2009
Karma: 0
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As previously reported, I came back from a long trip leaking coolant. As suspected it was the water pump.
I went up to NAPA with the list of number and they only had NAPA 43100. I purchased that and went back home to initiate tear down. I don't know if this is a good time or not, but since I wasn't certain what had to come off and what could just be loosened, tear down took 2 hours.
Upon reinstallation, I found one stripped hole in the plate to which the pump bolts. It wasn't stripped completely, just mostly, as soon as you put a little pressure on it, it popped. I went back up to NAPA and purchased their thread repair kit. Drilled, tapped and inserted and it was good to go. I finished the reassembly, filled it with coolant and let her idle in the driveway. No leaks. I stopped the engine and topped it off and took her for a short spin. Upon my return, still no leaks. I topped her off again and took her for a 20 minute ride, this time with the engine cover on so that I wasn't getting all the heat, still no leaks.
The process took 4.5 hours and was fairly straight-forward, but not easy due to the multiple strange positions above the hole in the floor. There were times when I was only supported by my knees and forehead on the edge of the hole. I'm hoping that I never have to do that one again...
Thanks to everyone that responded to the previous message and to Bill Massey for the help with the part numbers..
RIC to Hershey PA on Thursday. 250 miles each way -- longest voyage yet.
Eddie Pettit
73 GMC
Midlothian VA
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| Re: [GMCnet] Engine water pump replacement [message #91061 is a reply to message #91057] |
Sun, 04 July 2010 13:44  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Should you ever need to work on the engine area, put blankets over the
engine as you work over it. It makes the heat less of an influence.
On Sun, Jul 4, 2010 at 10:31 AM, KRDietz <krdietz@gmail.com> wrote:
> >The process took 4.5 hours and was fairly straight-forward, but not
> >easy due to the multiple strange positions above the hole in the
> floor. >There were times when I was only supported by my knees and
> forehead on >the edge of the hole. I'm hoping that I never have to do
> that one >again...
>
> The best way I've found to work on anything on the front of the motor is
> to cut a 2x6 that will fit over the Hole and between the seats and
> carpet it. A great place to kneel or rest your chest on while working.
>
> Even changing an alternator is a chore without this.
>
> My 2¢
> Kelvin
> '73 23' in Eugene, OR
>
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Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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www.appliedgmc.com
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| Re: [GMCnet] Engine water pump replacement [message #91114 is a reply to message #91063] |
Sun, 04 July 2010 23:23 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Senior Member |
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That is exactly what I do. Instead of a boat pillow, I have an old carpet runner I lay over the wood and down the step, and roll the excess up. Makes a nice knee pad.
| Ken Coit wrote on Sun, 04 July 2010 11:46 |
A section of 3/4" ply stores nicely behind the dinette and the passenger's
seat. I usually end up with my knees on the step and my chest on the ply,
sometimes with a boat cushion for padding.
--
Ken Coit, ND7N
Raleigh, NC
Parfait Royale
1978 Royale Rear Bath, 403, 3.07
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-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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