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| [GMCnet] install of new water pump [message #258922] |
Fri, 15 August 2014 13:42  |
Barb Grandoe
Messages: 7
Registered: July 2014
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Hi guys -- I just signed for delivery of my new thermostat and water pump from JimK.
. Can we get in there to replace the pump without removing the radiator?
Have any tricks to share or sage advice? (We already know the fan has to come away first)
Wondering if that leaves enough room to get in to that pump...... it looks tight.
thaks in advance,
B Grandoe
73 Wisconsin Glacier
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| Re: [GMCnet] install of new water pump [message #258954 is a reply to message #258922] |
Fri, 15 August 2014 18:13  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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On my 77, I did not have to do anything to the shroud. Put a belly board across the hatch, and it's an easy install. I used a 3/8 ratchet with the appropriate socket and an extension if I recall correctly. It will take longer to re-adjust the belts than install the water pump.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] install of new water pump [message #258960 is a reply to message #258954] |
Fri, 15 August 2014 19:24 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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A few words of caution about Olds water pumps. First, remove the old pump
and note where studs are used, as well as self-tapping 1/4" screws. Where
the screws are used on the lower part of the cover, be sure to use
something like "the right stuff" on the threads. They penetrate the cam
cover, and can leak if not sealed. Carefully match up the new pump with the
old one. Be certain that the impeller is the same, as well as the reach of
the clutch mounting flange on the shaft. When you get the pump, you usually
will find several different gaskets in the box. Match it with what was used
on the old pump. It will leak if you don't. Do not over tighten the self
tapping bolts, you will strip the threads in the cover if you do. Other
than that, it is a straight forward remove and replace deal.(grin)
Jim Hupy
Salem, Or
78 GMC ROYALE 403
On Aug 15, 2014 4:14 PM, "Kerry Pinkerton" wrote:
> On my 77, I did not have to do anything to the shroud. Put a belly board
> across the hatch, and it's an easy install. I used a 3/8 ratchet with the
> appropriate socket and an extension if I recall correctly. It will take
> longer to re-adjust the belts than install the water pump.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, Manny Brakes, 1 ton, tranny also a 76
> Eleganza to be re-bodied as an Art Deco car hauler
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] install of new water pump [message #258962 is a reply to message #258960] |
Fri, 15 August 2014 19:46 |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Jim,
I vaguely remember something about OEM water pumps with 4" impellers wouldn't that would be what you'd want?
Regards,
Rob M.
The Pedantic Mechanic
USAussie - Downunder
USA '75 Avion - Double Trouble TZE365V100426
AUS '75 Avion - The Blue Streak TZE365V100428
-----Original Message-----
From: James Hupy
A few words of caution about Olds water pumps. First, remove the old pump
and note where studs are used, as well as self-tapping 1/4" screws. Where
the screws are used on the lower part of the cover, be sure to use
something like "the right stuff" on the threads. They penetrate the cam
cover, and can leak if not sealed. Carefully match up the new pump with the
old one. Be certain that the impeller is the same, as well as the reach of
the clutch mounting flange on the shaft. When you get the pump, you usually
will find several different gaskets in the box. Match it with what was used
on the old pump. It will leak if you don't. Do not over tighten the self
tapping bolts, you will strip the threads in the cover if you do. Other
than that, it is a straight forward remove and replace deal.(grin)
Jim
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] install of new water pump [message #258965 is a reply to message #258962] |
Fri, 15 August 2014 20:16 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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It takes more than 1/2" wrench.
3/8"
DOnot need to tamper with the radiator, just the hose.
Drain the radiator level and hang the lower hose upward will save some time
fillling and emptying the radiator.remove the Fan /cluth as a assembly and
lean it against the radiator insid the shroud.
If you know wat to do, then ou can do it without moving the thermostat
housing, otherwise you should do so.
On Fri, Aug 15, 2014 at 5:46 PM, Rob Mueller
wrote:
> Jim,
>
> I vaguely remember something about OEM water pumps with 4" impellers
> wouldn't that would be what you'd want?
>
> Regards,
> Rob M.
> The Pedantic Mechanic
> USAussie - Downunder
> USA '75 Avion - Double Trouble TZE365V100426
> AUS '75 Avion - The Blue Streak TZE365V100428
>
> -----Original Message-----
> From: James Hupy
>
> A few words of caution about Olds water pumps. First, remove the old pump
> and note where studs are used, as well as self-tapping 1/4" screws. Where
> the screws are used on the lower part of the cover, be sure to use
> something like "the right stuff" on the threads. They penetrate the cam
> cover, and can leak if not sealed. Carefully match up the new pump with the
> old one. Be certain that the impeller is the same, as well as the reach of
> the clutch mounting flange on the shaft. When you get the pump, you usually
> will find several different gaskets in the box. Match it with what was used
> on the old pump. It will leak if you don't. Do not over tighten the self
> tapping bolts, you will strip the threads in the cover if you do. Other
> than that, it is a straight forward remove and replace deal.(grin)
> Jim
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] install of new water pump [message #259000 is a reply to message #258965] |
Sat, 16 August 2014 01:19 |
Joe Weir
Messages: 769
Registered: February 2013
Location: Columbia, SC
Karma: 7
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Senior Member |
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Having just done this three times, I needed 1/2, 9/16 and 3/8 sockets and wrenches. YMMV.
My wood hatch cover, opened and slid rearward away back from the dash about a foot sufficed as a "belly Board", allowing me to reach the front of the engine with two hands if needed.
really helpful if you have an assistant to handle the draining of the coolant underneath while you remove the rest of the stuff in the way.
My horse collar is gone, so I just had to remove the 4 bolts from the water pump pulley holding the fan and pulley.
power steering pump - three bolts. Un mount and slide to the driver's side with the hoses intact.
remove water pump.
Make sure you have right gasket for the water pump. Trust me, you don't want to get good at this...
76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center...
Columbia, SC.
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| Re: [GMCnet] install of new water pump [message #259036 is a reply to message #258922] |
Sat, 16 August 2014 11:16 |
<rallymaster
Messages: 361
Registered: May 2014
Karma: 2
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Senior Member |
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How did that old line go?
"Last week I couldn't even spell 'Injuneer', now I are one."
RonC
On Sat, 16 Aug 2014 00:21:51 -0600 Joe Weir writes:
> Having just done this three times, I needed 1/2, 9/16 and 3/8 sockets
> and wrenches. YMMV.
>
> My wood hatch cover, opened and slid rearward away back from the
> dash about a foot sufficed as a "belly Board", allowing me to reach
> the front of the
> engine with two hands if needed.
>
> really helpful if you have an assistant to handle the draining of
> the coolant underneath while you remove the rest of the stuff in the
> way.
>
> My horse collar is gone, so I just had to remove the 4 bolts from
> the water pump pulley holding the fan and pulley.
>
> power steering pump - three bolts. Un mount and slide to the
> driver's side with the hoses intact.
>
> remove water pump.
>
> Make sure you have right gasket for the water pump. Trust me, you
> don't want to get good at this...
> --
> 76 Birchaven - New engine, trans, aluminum radiator, brakes,
> airbags, fuel lines, seats, upholstery, adult beverage center...
> those Coachmen guys were
> really thinking about us second hand owners...
> Columbia, SC.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
Ron & Linda Clark
1978 Eleganza II
North Plains, ORYGUN
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