Home » Public Forums » GMCnet » Ford A426C vacuum pump issues
|
|
|
|
| Re: [GMCnet] Ford A426C vacuum pump issues [message #328937 is a reply to message #328935] |
Wed, 07 February 2018 22:30   |
 |
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Larry,
I don't know where the pump was located on the Azure; however, here's where it is on the F-150
https://www.youtube.com/watch?v=sxo2QVwbDkI
Scroll in to 3:00 minutes.
IIRC Dave Lenzi removed the horns and stuck his as high up in that area as possible; well above and to the right of the hood.
From looking at your photos I see the vacuum hook up is at the bottom with the hose facing towards the booster. It appears that the
exhaust was facing up; however, I can't tell that for sure. If it was I'd guess that's how the water got in to the pump.
I mounted the one on The Blue Streak behind the bracket that Ken's electric windshield wipers mount to and I made a hood that
extends over the exhaust filter.
Unfortunately I can't provide any photos as I can't drive with my arm in a sling so I can't get to my workshop.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Larry
Sent: Thursday, February 8, 2018 2:40 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Ford A426C vacuum pump issues
Several years ago I purchased a Ford Azure vacuum pump and installed it under the drivers side hatch on my coach. As you all know it
is used in conjunction with the vacuum booster to provide braking vacuum in the event that the engine should quit. The pump has
worked flawlessly until several weeks ago when it stopped pumping. It just blew 20 amp fuses. I took the thing off and disassembled
it. I found the crankshaft inside corroded badly
enough to seize the shaft so that the motor could not turn the crank. I soaked the crank with Kroil for about an hour and twisted it
with a channel lock and eventually broke it loose. I was surprised at how much corrosion I found inside of the pump.
Does anyone know where the pump was located on the Ford Azure? Considering the amount of corrosion inside the pump, I think that
locating it under the hatch (as many of us have done) is no longer advisable. It needs to be located in a place that is less exposed
to the elements. Any suggestions?
If your pump is located under the hatch as in this picture
http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p55693-img-10802.html
I would advise pulling the filter off of the front of the pump and check to see if any corrosion has taken place. The filter
housing is located
opposite the electric motor in this picture.
http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p55680-img-10841.html
here:
http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64527-img-12381.html
and here
http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64526-img-12371.html
I'd hate to see this thing lock up on you all when you need it most.
Just what I'd do.
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
| Re: [GMCnet] Ford A426C vacuum pump issues [message #328944 is a reply to message #328937] |
Thu, 08 February 2018 07:05 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
|
Senior Member |
|
|
On Wed, Feb 7, 2018 at 8:31 PM Rob Mueller wrote:
> Larry,
>
> I don't know where the pump was located on the Azure; however, here's
> where it is on the F-150
>
> https://www.youtube.com/watch?v=sxo2QVwbDkI
>
> Scroll in to 3:00 minutes.
>
> IIRC Dave Lenzi removed the horns and stuck his as high up in that area as
> possible; well above and to the right of the hood.
>
> From looking at your photos I see the vacuum hook up is at the bottom with
> the hose facing towards the booster. It appears that the
> exhaust was facing up; however, I can't tell that for sure. If it was I'd
> guess that's how the water got in to the pump.
>
> I mounted the one on The Blue Streak behind the bracket that Ken's
> electric windshield wipers mount to and I made a hood that
> extends over the exhaust filter.
>
> Unfortunately I can't provide any photos as I can't drive with my arm in a
> sling so I can't get to my workshop.
>
Sooo, what happened to your arm?.
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Larry
> Sent: Thursday, February 8, 2018 2:40 PM
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] Ford A426C vacuum pump issues
>
> Several years ago I purchased a Ford Azure vacuum pump and installed it
> under the drivers side hatch on my coach. As you all know it
> is used in conjunction with the vacuum booster to provide braking vacuum
> in the event that the engine should quit. The pump has
> worked flawlessly until several weeks ago when it stopped pumping. It just
> blew 20 amp fuses. I took the thing off and disassembled
> it. I found the crankshaft inside corroded badly
> enough to seize the shaft so that the motor could not turn the crank. I
> soaked the crank with Kroil for about an hour and twisted it
> with a channel lock and eventually broke it loose. I was surprised at how
> much corrosion I found inside of the pump.
>
> Does anyone know where the pump was located on the Ford Azure?
> Considering the amount of corrosion inside the pump, I think that
> locating it under the hatch (as many of us have done) is no longer
> advisable. It needs to be located in a place that is less exposed
> to the elements. Any suggestions?
>
> If your pump is located under the hatch as in this picture
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p55693-img-10802.html
>
> I would advise pulling the filter off of the front of the pump and check
> to see if any corrosion has taken place. The filter
> housing is located
> opposite the electric motor in this picture.
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p55680-img-10841.html
>
> here:
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64527-img-12381.html
>
> and here
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64526-img-12371.html
>
>
> I'd hate to see this thing lock up on you all when you need it most.
>
> Just what I'd do.
>
>
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
| Re: [GMCnet] Ford A426C vacuum pump issues [message #328947 is a reply to message #328937] |
Thu, 08 February 2018 08:55 |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
|
Senior Member |
|
|
USAussie wrote on Wed, 07 February 2018 22:30Larry,
From looking at your photos I see the vacuum hook up is at the bottom with the hose facing towards the booster. It appears that the
exhaust was facing up; however, I can't tell that for sure. If it was I'd guess that's how the water got in to the pump.
Regards,
Rob M.
Rob, When I installed the pump, I recognized the issue with the exhaust facing up, so took the time to remove the exhaust filter and turn it so it was facing down. Also placed a piece of rubber conveyer belt material over the pump to deflect water that may get in around the hatch. Obviously was not enough. I've let the pump crank soak overnight with Kroil and today I'm going to flush it out in my parts cleaner. Then will coat the crank and filter good with "Corrosion X"
https://www.amazon.com/Corrosion-X-90102-Anti-Corrosion-Lubricant-16-Ounce/dp/B003HFTI0S/ref=sr_1_1?ie=UTF8&qid=1518101178&sr=8-1&keywords =corrosion-x
My son-in-law put me on to this stuff 4 or 5 yrs ago and it has eliminated misc. issues I've had with corrosion in coach and home. I don't really want to move the pump so will also be pulling the exhaust/filter every year to check it. Just what I'm gonna do.
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
|
|
|
|
| Re: [GMCnet] Ford A426C vacuum pump issues [message #328948 is a reply to message #328947] |
Thu, 08 February 2018 10:06 |
Bullitthead
Messages: 1411
Registered: November 2013
Karma: 5
|
Senior Member |
|
|
Maybe the moisture is resulting from the vapors being vacuumed and is somehow making its way into the crankcase. Condensation would be possible with many temperature/pressure combinations and might have built up over the period of use and never had a way out. And there is a lot of moisture in the engine fumes that may have gone through the system, depending on your plumbing setup.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
|
|
|
|
|
|
| Re: [GMCnet] Ford A426C vacuum pump issues [message #328953 is a reply to message #328944] |
Thu, 08 February 2018 15:42 |
|
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Gene,
Right shoulder rotator cuff repair. Op went well, 6 weeks in a sling followed by long physio program.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of gene Fisher
Sent: Friday, February 9, 2018 12:06 AM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Ford A426C vacuum pump issues
On Wed, Feb 7, 2018 at 8:31 PM Rob Mueller wrote:
> Larry,
>
> I don't know where the pump was located on the Azure; however, here's
> where it is on the F-150
>
> https://www.youtube.com/watch?v=sxo2QVwbDkI
>
> Scroll in to 3:00 minutes.
>
> IIRC Dave Lenzi removed the horns and stuck his as high up in that area as
> possible; well above and to the right of the hood.
>
> From looking at your photos I see the vacuum hook up is at the bottom with
> the hose facing towards the booster. It appears that the
> exhaust was facing up; however, I can't tell that for sure. If it was I'd
> guess that's how the water got in to the pump.
>
> I mounted the one on The Blue Streak behind the bracket that Ken's
> electric windshield wipers mount to and I made a hood that
> extends over the exhaust filter.
>
> Unfortunately I can't provide any photos as I can't drive with my arm in a
> sling so I can't get to my workshop.
>
Sooo, what happened to your arm?.
> Regards,
> Rob M.
> The Pedantic Mechanic
> Sydney, Australia
> AUS '75 Avion - The Blue Streak TZE365V100428
> USA '75 Avion - Double Trouble TZE365V100426
> USA '77 Kingsley - TZE 267V100808
>
>
> -----Original Message-----
> From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Larry
> Sent: Thursday, February 8, 2018 2:40 PM
> To: gmclist@list.gmcnet.org
> Subject: [GMCnet] Ford A426C vacuum pump issues
>
> Several years ago I purchased a Ford Azure vacuum pump and installed it
> under the drivers side hatch on my coach. As you all know it
> is used in conjunction with the vacuum booster to provide braking vacuum
> in the event that the engine should quit. The pump has
> worked flawlessly until several weeks ago when it stopped pumping. It just
> blew 20 amp fuses. I took the thing off and disassembled
> it. I found the crankshaft inside corroded badly
> enough to seize the shaft so that the motor could not turn the crank. I
> soaked the crank with Kroil for about an hour and twisted it
> with a channel lock and eventually broke it loose. I was surprised at how
> much corrosion I found inside of the pump.
>
> Does anyone know where the pump was located on the Ford Azure?
> Considering the amount of corrosion inside the pump, I think that
> locating it under the hatch (as many of us have done) is no longer
> advisable. It needs to be located in a place that is less exposed
> to the elements. Any suggestions?
>
> If your pump is located under the hatch as in this picture
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p55693-img-10802.html
>
> I would advise pulling the filter off of the front of the pump and check
> to see if any corrosion has taken place. The filter
> housing is located
> opposite the electric motor in this picture.
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p55680-img-10841.html
>
> here:
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64527-img-12381.html
>
> and here
>
>
> http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64526-img-12371.html
>
>
> I'd hate to see this thing lock up on you all when you need it most.
>
> Just what I'd do.
>
>
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
| Re: Ford A426C vacuum pump issues [message #328955 is a reply to message #328935] |
Thu, 08 February 2018 16:09 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
Rob -
Hope the healing continues well. Along those lines, you can't physically drive, or The Do - Rights will ticket you for doing so one armed (presumably not if you're driving something one-arm equipped)? Here you gotta have a 'necker's knob' swivel on the steering wheel, power steering and brakes, and automatic trans.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
| Re: [GMCnet] Ford A426C vacuum pump issues [message #328956 is a reply to message #328947] |
Thu, 08 February 2018 16:03 |
|
USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
|
Senior Member |
|
|
Larry,
Thanks for clarifying how you installed the exhaust, kinda figured you would have installed it as noted below.
I got to thinking about the filter and I reckon air goes in and out of it as the diaphragms displace air in the crankcase.
I think Dave got it right by removing the horns and tucking the pump up in that area as high as possible with the exhaust filter as
far away from the hood as possible.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Larry
Sent: Friday, February 9, 2018 1:56 AM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] Ford A426C vacuum pump issues
Rob,
When I installed the pump, I recognized the issue with the exhaust facing up, so took the time to remove the exhaust filter and turn
it so it was facing down. Also placed a piece of rubber conveyer belt material over the pump to deflect water that may get in
around the hatch. Obviously was not enough. I've let the pump crank soak overnight with Kroil and today I'm going to flush it out
in my parts cleaner. Then will coat the crank and
filter good with "Corrosion X"
https://www.amazon.com/Corrosion-X-90102-Anti-Corrosion-Lubricant-16-Ounce/dp/B003HFTI0S/ref=sr_1_1?ie=UTF8&qid=1518101178&sr=8-1&ke
ywords=corrosion-x
My son-in-law put me on to this stuff 4 or 5 yrs ago and it has eliminated misc. issues I've had with corrosion in coach and home.
I don't really want to move the pump so will also be pulling the exhaust/filter every year to check it. Just what I'm gonna do.
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
|
|
|
|
| Re: Ford A426C vacuum pump issues [message #328961 is a reply to message #328935] |
Thu, 08 February 2018 21:11 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
|
Senior Member |
|
|
As the pump seldom runs. Why not just mount it inside the coach where it will be dry and away from contaminated air.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
|
|
|
|
| Re: Ford A426C vacuum pump issues [message #328972 is a reply to message #328935] |
Fri, 09 February 2018 07:36 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
I'd rather go for shorter hoses and less noie. Do the Chuck Master Cylinder thing and fit a plastic bottle over it.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
| Re: Ford A426C vacuum pump issues [message #328976 is a reply to message #328972] |
Fri, 09 February 2018 08:13 |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
|
Senior Member |
|
|
Johnny Bridges wrote on Fri, 09 February 2018 07:36I'd rather go for shorter hoses and less noie. Do the Chuck Master Cylinder thing and fit a plastic bottle over it.
--johnny
As I posted in the sub-thread, this is how I have shielded my pump from the elements.
http://www.gmcmhphotos.com/photos/emergency-vacuum-pump-for-power-brakes/p64528-img-12401.html
But ya know, if we are going down the road in heavy rain, everything under there is getting wet. No way to avoid it. We just need to do the best we can to shield the pump from MOST of the elements. Then, I believe we need to pull that exhaust/filter off every year, just to make sure it's ok. JWIT
Larry
78 Royale w/500 Caddy
Menomonie, WI.
|
|
|
|
Goto Forum:
Current Time: Fri Apr 19 04:28:32 CDT 2024
Total time taken to generate the page: 0.00994 seconds
|
GMCforum
Search
Help
Register
Login
Home
