I need to replace my brake booster vacuum pump, what's everyone using these days?ThanksRay ErspamerSent from my U.S.Cellular© Smartphone
Brake booster vacuum pump
- Thread starter 78gmcroyale
- Start date
At least 2 ways to go.
One is to just make a vacuum canister out of PVC pipe, and run a large
vacuum hose to the booster. Engine vacuum suffices to charge the canister.
No pump required. Or, a smaller pump will suffice to replenish the vacuum
needed when the engine is off.
The second, is to use an electric driven larger vacuum pump, with no
canister. But it needs to be big enough to perform the brake booster task
all by itself. Those pumps are more $$$, and are usually turned on and off
via a vacuum sensing switch and relay setup. Again, a more complex
system, not exactly trouble free.
Pretty hard to find something that pumps as much vacuum as your engine.
Jim Hupy
Salem, Oregon
> I need to replace my brake booster vacuum pump, what's everyone using
> these days?ThanksRay ErspamerSent from my U.S.Cellular© Smartphone
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
One is to just make a vacuum canister out of PVC pipe, and run a large
vacuum hose to the booster. Engine vacuum suffices to charge the canister.
No pump required. Or, a smaller pump will suffice to replenish the vacuum
needed when the engine is off.
The second, is to use an electric driven larger vacuum pump, with no
canister. But it needs to be big enough to perform the brake booster task
all by itself. Those pumps are more $$$, and are usually turned on and off
via a vacuum sensing switch and relay setup. Again, a more complex
system, not exactly trouble free.
Pretty hard to find something that pumps as much vacuum as your engine.
Jim Hupy
Salem, Oregon
> I need to replace my brake booster vacuum pump, what's everyone using
> these days?ThanksRay ErspamerSent from my U.S.Cellular© Smartphone
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
That's what I want to replace, the pump that shuts on and off.=C2=A0 Mine w=
on't shut off anymore and runs continuously.=C2=A0Sent from my U.S.Cellula=
r=C2=A9 Smartphone -------- Original message --------From: James Hupy Date: 6/19/21 4:10 PM (GMT-06:00) To: gmclist=
cnet.org Subject: [GMCnet] Re: Brake booster vacuum pump At least 2 ways to=
go.=C2=A0=C2=A0=C2=A0=C2=A0 One is to just make a vacuum canister out of P=
VC pipe, and run a largevacuum hose to the booster. Engine vacuum suffices =
to charge the canister.No pump required. Or, a smaller pump will suffice to=
replenish the vacuumneeded when the engine is off.=C2=A0=C2=A0=C2=A0=C2=
=A0 The second, is to use an electric driven larger vacuum pump, with nocan=
ister. But it needs to be big enough to perform the brake booster taskall b=
y itself. Those pumps are more $$$, and are usually turned on and offvia a=
=C2=A0 vacuum sensing switch and relay setup. Again, a more complexsystem,=
=C2=A0 not exactly trouble free.=C2=A0=C2=A0=C2=A0=C2=A0 Pretty hard to fin=
d something that pumps as much vacuum as your engine.Jim HupySalem, OregonO=
n Sat, Jun 19, 2021, 1:41 PM 78gmcroyale wrote:> I =
need to replace my brake booster vacuum pump, what's everyone using> these =
days?ThanksRay ErspamerSent from my=C2=A0 U.S.Cellular=C2=A9 Smartphone> __=
_____________________________________________> GMCnet mailing list> Unsubsc=
ribe or Change List Options:>______________________________________________=
_GMCnet mailing listUnsubscribe or Change List Options:
on't shut off anymore and runs continuously.=C2=A0Sent from my U.S.Cellula=
r=C2=A9 Smartphone -------- Original message --------From: James Hupy Date: 6/19/21 4:10 PM (GMT-06:00) To: gmclist=
cnet.org Subject: [GMCnet] Re: Brake booster vacuum pump At least 2 ways to=
go.=C2=A0=C2=A0=C2=A0=C2=A0 One is to just make a vacuum canister out of P=
VC pipe, and run a largevacuum hose to the booster. Engine vacuum suffices =
to charge the canister.No pump required. Or, a smaller pump will suffice to=
replenish the vacuumneeded when the engine is off.=C2=A0=C2=A0=C2=A0=C2=
=A0 The second, is to use an electric driven larger vacuum pump, with nocan=
ister. But it needs to be big enough to perform the brake booster taskall b=
y itself. Those pumps are more $$$, and are usually turned on and offvia a=
=C2=A0 vacuum sensing switch and relay setup. Again, a more complexsystem,=
=C2=A0 not exactly trouble free.=C2=A0=C2=A0=C2=A0=C2=A0 Pretty hard to fin=
d something that pumps as much vacuum as your engine.Jim HupySalem, OregonO=
n Sat, Jun 19, 2021, 1:41 PM 78gmcroyale wrote:> I =
need to replace my brake booster vacuum pump, what's everyone using> these =
days?ThanksRay ErspamerSent from my=C2=A0 U.S.Cellular=C2=A9 Smartphone> __=
_____________________________________________> GMCnet mailing list> Unsubsc=
ribe or Change List Options:>______________________________________________=
_GMCnet mailing listUnsubscribe or Change List Options:
Talk to Dave Lenzi. He has an adapter to the vacuum booster with a built-in vacuum switch. I'm not sure about a pump, but he can bring you up to date
about that.
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
about that.
--
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
Ray,
If your vacuum pump runs constantly, you might have a leak in your brake booster that doesn't allow the vacuum to build up to the point where the pump
shuts off.
Just a thought. It might be a good idea to check that out.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
If your vacuum pump runs constantly, you might have a leak in your brake booster that doesn't allow the vacuum to build up to the point where the pump
shuts off.
Just a thought. It might be a good idea to check that out.
--
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,
Solar battery charging. GMCSJ and GMCMI member
I had thought of that, so I Disconnected the hose from the power brake booster and plugged it, pump kept running. I need to remove the pump and do more analysis on it.Sent from my U.S.Cellular© Smartphone
-------- Original message --------From: Carl Stouffer Date: 6/20/21 4:02 PM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Ray, If your vacuum pump runs constantly, you might have a leak in your brake booster that doesn't allow the vacuum to build up to the point where the pumpshuts off.Just a thought. It might be a good idea to check that out.-- Carl Stouffer'75 ex Palm BeachTucson, AZ.Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,Solar battery charging. GMCSJ and GMCMI member_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
-------- Original message --------From: Carl Stouffer Date: 6/20/21 4:02 PM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Ray, If your vacuum pump runs constantly, you might have a leak in your brake booster that doesn't allow the vacuum to build up to the point where the pumpshuts off.Just a thought. It might be a good idea to check that out.-- Carl Stouffer'75 ex Palm BeachTucson, AZ.Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles,Solar battery charging. GMCSJ and GMCMI member_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such?
--
John Lebetski
Woodstock, IL
77 Eleganza II
--
John Lebetski
Woodstock, IL
77 Eleganza II
I plan to remove it tomorrow and try to figure out if it can be fixed.Sent from my U.S.Cellular© Smartphone
-------- Original message --------From: "John R. Lebetski" Date: 6/20/21 5:59 PM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such? -- John LebetskiWoodstock, IL77 Eleganza II_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
-------- Original message --------From: "John R. Lebetski" Date: 6/20/21 5:59 PM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such? -- John LebetskiWoodstock, IL77 Eleganza II_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
Most vacuum pumps have a vacuum set switch either internally or an external switch. This switch can be set to turn off when the desired vacuum is reached.
As you go up in altitude the vacuum the he pump can achieve will be less. If you have the switch set too high the pump may not be able to achieve the vacuum and it will run forever.
Emery Stora
emerystora
>
> I plan to remove it tomorrow and try to figure out if it can be fixed.Sent from my U.S.Cellular© Smartphone
> -------- Original message --------From: "John R. Lebetski" Date: 6/20/21 5:59 PM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such? -- John LebetskiWoodstock, IL77 Eleganza II_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
> _______________________________________________
> GMCnet mailing list
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As you go up in altitude the vacuum the he pump can achieve will be less. If you have the switch set too high the pump may not be able to achieve the vacuum and it will run forever.
Emery Stora
emerystora
>
> I plan to remove it tomorrow and try to figure out if it can be fixed.Sent from my U.S.Cellular© Smartphone
> -------- Original message --------From: "John R. Lebetski" Date: 6/20/21 5:59 PM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such? -- John LebetskiWoodstock, IL77 Eleganza II_______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
> _______________________________________________
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The vacuum switch used by Dave Lenzi on his brake booster is made by Shift Technology Products called Adjustable Vacuum Switch part # K085.
Good Luck
Larry Coldren
Ft. Collins CO
1974 Canyonlands
________________________________
From: John R.Lebetski
Sent: Sunday, June 20, 2021 04:59 PM
To: gmclist
Subject: [GMCnet] Re: Brake booster vacuum pump
Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such?
--
John Lebetski
Woodstock, IL
77 Eleganza II
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GMCnet mailing list
Unsubscribe or Change List Options:
Good Luck
Larry Coldren
Ft. Collins CO
1974 Canyonlands
________________________________
From: John R.Lebetski
Sent: Sunday, June 20, 2021 04:59 PM
To: gmclist
Subject: [GMCnet] Re: Brake booster vacuum pump
Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such?
--
John Lebetski
Woodstock, IL
77 Eleganza II
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GMCnet mailing list
Unsubscribe or Change List Options:
Kin thanks for catching my error. the switch part 3 is K 058.
Larry C
________________________________
From: Lawrence Coldren
Sent: Monday, June 21, 2021 11:20 AM
To: gmclist
Subject: [GMCnet] Re: Brake booster vacuum pump
The vacuum switch used by Dave Lenzi on his brake booster is made by Shift Technology Products called Adjustable Vacuum Switch part # K085.
Good Luck
Larry Coldren
Ft. Collins CO
1974 Canyonlands
________________________________
From: John R.Lebetski
Sent: Sunday, June 20, 2021 04:59 PM
To: gmclist
Subject: [GMCnet] Re: Brake booster vacuum pump
Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such?
--
John Lebetski
Woodstock, IL
77 Eleganza II
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Larry C
________________________________
From: Lawrence Coldren
Sent: Monday, June 21, 2021 11:20 AM
To: gmclist
Subject: [GMCnet] Re: Brake booster vacuum pump
The vacuum switch used by Dave Lenzi on his brake booster is made by Shift Technology Products called Adjustable Vacuum Switch part # K085.
Good Luck
Larry Coldren
Ft. Collins CO
1974 Canyonlands
________________________________
From: John R.Lebetski
Sent: Sunday, June 20, 2021 04:59 PM
To: gmclist
Subject: [GMCnet] Re: Brake booster vacuum pump
Sounds like pump working “too good”. Can you just unstick or replace switch? Maybe McMaster, Granger or such?
--
John Lebetski
Woodstock, IL
77 Eleganza II
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
_______________________________________________
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I removed the pump today and looked at it.=C2=A0 It's a completely sealed u=
nit...it's TOAST.=C2=A0 So I ordered a new unit....https://swperformancepar=
ts.com/product/1420/gclid CjwKCAjw8cCGBhB6EiwAgOReyzo9LnJpgqsioCUq_CJJh3F=
ZzHAwB9Q9eulLT5Ihvpg22Lg71Nz3ihoCNBQQAvD_BwESent from my U.S.Cellular=
=C2=A9 Smartphone -------- Original message --------From: Lawrence Coldre=
n Date: 6/21/21 2:50 PM (GMT-06:00) To: gmclist=
mcnet.org Subject: [GMCnet] Re: Brake booster vacuum pump Kin thanks for ca=
tching my error.=C2=A0 the switch part 3 is K 058.Larry C__________________=
______________From: Lawrence Coldren Sent: Monday, June 2=
1, 2021 11:20 AMTo: gmclist Subjec=
t: [GMCnet] Re: Brake booster vacuum pumpThe vacuum switch used by Dave Len=
zi on his brake booster is made by Shift Technology Products called Adjusta=
ble Vacuum Switch part # K085.Good LuckLarry ColdrenFt. Collins CO1974 Cany=
onlands________________________________From: John R.Lebetski Sent: Sunday, June 20, 2021 04:59 PMTo: gmclist =
Subject: [GMCnet] Re: Brake booster vacuum pumpSou=
nds like pump working =E2=80=9Ctoo good=E2=80=9D.=C2=A0 Can you just unstic=
k or replace switch?=C2=A0 Maybe McMaster, Granger or such?--John LebetskiW=
oodstock, IL77 Eleganza II_______________________________________________GM=
Cnet mailing listUnsubscribe or Change List Options:_______________________=
________________________GMCnet mailing listUnsubscribe or Change List Optio=
ns:_______________________________________________GMCnet mailing listUnsubs=
cribe or Change List Options:
nit...it's TOAST.=C2=A0 So I ordered a new unit....https://swperformancepar=
ts.com/product/1420/gclid CjwKCAjw8cCGBhB6EiwAgOReyzo9LnJpgqsioCUq_CJJh3F=
ZzHAwB9Q9eulLT5Ihvpg22Lg71Nz3ihoCNBQQAvD_BwESent from my U.S.Cellular=
=C2=A9 Smartphone -------- Original message --------From: Lawrence Coldre=
n Date: 6/21/21 2:50 PM (GMT-06:00) To: gmclist=
mcnet.org Subject: [GMCnet] Re: Brake booster vacuum pump Kin thanks for ca=
tching my error.=C2=A0 the switch part 3 is K 058.Larry C__________________=
______________From: Lawrence Coldren Sent: Monday, June 2=
1, 2021 11:20 AMTo: gmclist Subjec=
t: [GMCnet] Re: Brake booster vacuum pumpThe vacuum switch used by Dave Len=
zi on his brake booster is made by Shift Technology Products called Adjusta=
ble Vacuum Switch part # K085.Good LuckLarry ColdrenFt. Collins CO1974 Cany=
onlands________________________________From: John R.Lebetski Sent: Sunday, June 20, 2021 04:59 PMTo: gmclist =
Subject: [GMCnet] Re: Brake booster vacuum pumpSou=
nds like pump working =E2=80=9Ctoo good=E2=80=9D.=C2=A0 Can you just unstic=
k or replace switch?=C2=A0 Maybe McMaster, Granger or such?--John LebetskiW=
oodstock, IL77 Eleganza II_______________________________________________GM=
Cnet mailing listUnsubscribe or Change List Options:_______________________=
________________________GMCnet mailing listUnsubscribe or Change List Optio=
ns:_______________________________________________GMCnet mailing listUnsubs=
cribe or Change List Options:
Ray,
What kind of vacuum does this pump create? 21"...more or less?
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
What kind of vacuum does this pump create? 21"...more or less?
--
Larry
78 Royale w/500 Caddy
Menomonie, WI.
It comes with an Adjustable valve 18-22"Sent from my U.S.Cellular© Smartphone
-------- Original message --------From: Larry Date: 6/22/21 7:26 AM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Ray,What kind of vacuum does this pump create? 21"...more or less?-- Larry 78 Royale w/500 CaddyMenomonie, WI._______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
-------- Original message --------From: Larry Date: 6/22/21 7:26 AM (GMT-06:00) To: gmclist Subject: [GMCnet] Re: Brake booster vacuum pump Ray,What kind of vacuum does this pump create? 21"...more or less?-- Larry 78 Royale w/500 CaddyMenomonie, WI._______________________________________________GMCnet mailing listUnsubscribe or Change List Options:
