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[GMCnet] Brake bleeder [message #331088]

Thu, 19 April 2018 15:28

Oliver Moore

Messages: 21
Registered: March 2018

Karma: 1

Junior Member

Does anyone know where to buy one of the power bleeders?
Oliver
73 Kinsley
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Re: [GMCnet] Brake bleeder [message #331089 is a reply to message #331088]

Thu, 19 April 2018 15:46

Ken Shaffer

Messages: 89
Registered: September 2017
Location: Marion Iowa

Karma: -1

Member

I use the Mityvac vacuum hand pump and it works very good. I included a
link for the hand pump as well as a canister vac pump.
https://www.amazon.com/Mityvac-MITMV8500-Silverline-Automotive-Vacuum/dp/B0002SQYUA/ref=sr_1_1?s=automotive&ie=UTF8&qid=1524170482&sr=1-1& amp;keywords=mityvac

https://www.amazon.com/Mityvac-MV6835-Vacuum-Brake-Bleeding/dp/B0015POUXM/ref=sr_1_7?s=automotive&ie=UTF8&qid=1524170482&sr=1-7&keywor ds=mityvac

Ken Shaffer
73 Canyonlands
73 Glacier

On Thu, Apr 19, 2018 at 3:28 PM, Oliver Moore wrote:

> Does anyone know where to buy one of the power bleeders?
> Oliver
> 73 Kinsley
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Ken Shaffer Marion Iowa 73 Canyon Lands, 455, Micro-level, Alum radiator, Alcoa wheels, Lenzi hubs/bearings, Howell EFI/EBL, Rostra Cruise, Custom interior

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Re: [GMCnet] Brake bleeder [message #331091 is a reply to message #331088]

Thu, 19 April 2018 17:06

75realsteel

Messages: 26
Registered: December 2012
Location: Chicago

Karma: 0

Junior Member

I emailed Jim Hupy. Using his pressure bleeder has so far been the easiest process I've used to bleed brakes - and is a one-person job.
http://www.gmcmotorhomemarketplace.com/jhupy/

http://www.gmcmhphotos.com/photos/data/7153/medium/IMG_20180325_124410138_HDR.jpg

There are some posts on the topic in the forum describing the process - and instructions included in Jim's kit to make it easy.

Kevin

'77 Kingsley 26 - Chicago, IL

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Re: [GMCnet] Brake bleeder [message #331095 is a reply to message #331088]

Thu, 19 April 2018 17:32

ljdavick

Messages: 3548
Registered: March 2007
Location: Fremont, CA

Karma: -3

Senior Member

I understand the pressure bleeder is fantastic, but I bought the Harbor Freight pneumatic brake bleeder and have had very good results. Hook it up to your compressor and it sucks the fluid from the brake side.

It includes a bottle that you can fill with fluid to keep the master cylinder full, but I've never tried it on the coach.

Larry Davick
Fremont, California
A Mystery Machine
'76 (ish) Palm Beach

> On April 19, 2018 at 1:28 PM Oliver Moore wrote:
>
>
> Does anyone know where to buy one of the power bleeders?
> Oliver
> 73 Kinsley
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy

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Re: [GMCnet] Brake bleeder [message #331096 is a reply to message #331088]

Thu, 19 April 2018 17:30

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Oliver,

Yep:

http://www.gmcmotorhomemarketplace.com/jhupy/

BTW this is an old photo; Jim now uses cables instead of chains.

I have used it many times on different coaches and it work better than any other bleeder.

To flush the out old fluid:

1) service the pressure bleeder with three quarts of DOT 4 brake fluid
2) remove the top of the master cylinder
3) use a turkey baster with a short plastic line on the end to suck the old fluid out of the M/C
4) attach the pressure bleeder to the M/C
5) pump up the pressure to 10 psi
6) open the bleeder on the passenger side rear wheel and watch the color of the fluid
7) when the color changes close the bleeder
8) pump the pressure bleeder up to 10 psi
9) open the bleeder on the passenger side middle wheel and watch the color of the fluid
10) repeat step 7)

Repeat steps 5 to 10 on the:

Rear driver side wheel
Middle driver side wheel
Front passenger side wheel
Front driver side wheel

Disconnect the pressure bleeder plate from the M/C
Top up the M/C
Re attach the M/C cover
Empty the fluid in the pressure bleeder back into the can(s) it came in.

I've done this in around 20 minutes.

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 Oliver Moore
Sent: Thursday, April 19, 2018 3:28 PM
To: gmclist@list.gmcnet.org
Subject: [GMCnet] Brake bleeder

Does anyone know where to buy one of the power bleeders?
Oliver
73 Kinsley
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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] Brake bleeder [message #331099 is a reply to message #331088]

Thu, 19 April 2018 18:53

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Oliver,

However you bleed your brakes - Please.....
Remove each bleed screw and wrap the threaded section with a turn and an half of teflon tape.
Why a turn and an half, because you need the over lap to hold it on and two full turns often makes the screw too tight in the cylinder.
Why Teflon Tape, because no matter how you bleed, fluid that is hydroscopic will get into the threads and induces corrosion so the next time you need to bleed the brakes you are sure to break a bleed screw.

Do not forget the caps for the bleeders to keep as much water out as you can.

I don't pressure bleed because it is not compatible with most of out vehicles. So I have been vacuum bleeding for decades. I used to have a neat rig to hang a fluid can so the master cylinder was always at level, but I have to make a new one because some dufus that was working on my car on my lift left it where a lift arm could come down and crush it. I was really pissed with the guy.
I don't let anybody else work on my car.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: [GMCnet] Brake bleeder [message #331102 is a reply to message #331088]

Thu, 19 April 2018 20:08

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

https://www.harborfreight.com/brake-bleeder-and-vacuum-pump-kit-63391.html

https://www.harborfreight.com/mityvac-vacuum-pump-39522.html

I use about 10 feet of clear tubing between the and pump / tank and the bleeder valve at the wheels. I temporarily run the tube vertical up the side of the coach and back down a bit. Now I can see what is coming out of the wheel cylinder / caliper as I pump. I am looking for air and dirty fluid. When it comes out clean and air free I'm finished.

I also do what Matt suggests and remove, clean, (sometimes with a wire brush or bead blaster) and wrap the bleeder valves with teflon tape before starting. I have two new / rebuilt calipers that arrived today. I will wrap those bleeder valves prior to installing them.

When the system has been open for caliper, hose, line, or master cylinder work, I like gravity bleeding followed by vacuum bleeding. It is slow but almost all air is carried to the caliper / wheel cylinder and exhausted and all I have to do is watch and have some coffee. You can also do more than one wheel at the same time while watching that the master cylinder does not run dry.

There is nothing wrong with pressure bleeding. I have done it that way too.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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