Home » Public Forums » GMCnet » [GMCnet] Brake linebleeding
| [GMCnet] Brake linebleeding [message #83572] |
Fri, 07 May 2010 21:24  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Okay, gang. I have my new master cylinder and I have pre-bled it
according to the instructions that accompanied it. Bought it at
NAPA as they were only ones that had new, even though made in China.
The only other source was Advance Auto and they only had rebuilt.
Do I start bleeding the lines at the front disks or at the right
rear as that seems to be the longest distance?
* Mac Macdonald *
* Oklahoma City *
** "Money Pit" **
* '76 ex - P.B. *
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| Re: [GMCnet] Brake linebleeding [message #83580 is a reply to message #83572] |
Fri, 07 May 2010 22:04  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Mac,
According to Maintenance Manual X-7525 Section 5 Page 5-14 ON - VEHICLE
SERVICING - BLEEDING BRAKE SYSTEM Figure 1 - Brake Bleeding Sequence:
1) Driver side front
2) Passenger side front
3) Driver side middle
4) Driver side rear
5) Passenger side middle
6) Passenger side rear
Figure 3 - Tool J-23709 Installed
Shows the tool used to depress the little tit in the front of the
combination valve.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of D C *Mac* Macdonald
Sent: Saturday, 8 May 2010 12:24 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Brake linebleeding
Okay, gang. I have my new master cylinder and I have pre-bled it
according to the instructions that accompanied it. Bought it at
NAPA as they were only ones that had new, even though made in China.
The only other source was Advance Auto and they only had rebuilt.
Do I start bleeding the lines at the front disks or at the right
rear as that seems to be the longest distance?
* Mac Macdonald *
* Oklahoma City *
** "Money Pit" **
* '76 ex - P.B. *
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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 linebleeding [message #83645 is a reply to message #83626] |
Sat, 08 May 2010 11:39 |
gmcrv1
Messages: 839
Registered: August 2007
Location: Memphis
Karma: -1
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Senior Member |
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From the old days when I first learned to bleed brakes I was taught to bleed
the wheel cylinder furthest from the master cylinder and work your way
back. Kind of like the rules
of golf - furthest away etc.
I think this has been the recommended method since the introduction of juice
brakes vs.
mechanical brakes - when it didn't matter which wheel was adjusted first.
JWID,
Tom Eckert
N2VWN <N@VWN>
73 Glacier
On Sat, May 8, 2010 at 8:36 AM, Tony Wright <tdublu62@gmail.com> wrote:
>
>
> Just an FYI for those folks with a '77-'78, in the '77-'78 maintenance
> supplement they changed the sequence to reduce "the possibility of having to
> rebleed wheel cylinders a second time to eliminate air from the system".
> Passenger rear, Passenger middle, Driver rear, Driver middle, Passenger
> Front, Driver front
> --
> Tony W.
> Kirkland, WA
> '78 Kingsley
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
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| Re: [GMCnet] Brake linebleeding [message #83680 is a reply to message #83643] |
Sat, 08 May 2010 16:15 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Mac,
AFIK the brake system plumbing did not change so I'd say it was practical
experience.
I'm going to make a copy of the later manual's instructions and insert the
page in my early manual.
BTW I apologize for misleading you; from now on before I provide Maintenance
Manual reference material I will check; X-7525, X-7625, and X-7725!
You can get a DVD of the manual from Tom Lins; see eBay 110527832871.
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of D C *Mac* Macdonald
Sent: Sunday, 9 May 2010 2:06 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Brake linebleeding
Well, now I am really confused. This is what I had
expected would be more correct. Bleed longest lines
first and then work forward.
What's a fella to do? Is there a pertinent difference
between the hydraulic lines between 77-78 and earlier?
Or did this change arrise from practical experience.
* Mac Macdonald *
* Oklahoma City *
** "Money Pit" **
* '76 ex - P.B. *
----------------------------------------
To: gmclist@temp.gmcnet.org
From: tdublu62@gmail.com
Date: Sat, 8 May 2010 08:36:50 -0500
Subject: Re: [GMCnet] Brake linebleeding
Just an FYI for those folks with a '77-'78, in the '77-'78
maintenance supplement they changed the sequence to reduce
"the possibility of having to rebleed wheel cylinders a
second time to eliminate air from the system".
Passenger rear, Passenger middle,
Driver rear, Driver middle
Passenger Front, Driver front
--
Tony W.
Kirkland, WA
'78 Kingsley
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List Information and Subscription Options:
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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 linebleeding [message #83701 is a reply to message #83700] |
Sat, 08 May 2010 18:34 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Tony,
I think it's great that you brought it up!
I wonder how many people bled the brakes as noted in the X-7525 manual only
to wind up with air in the lines cursing the guys that wrote the manual!
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Tony Wright
Sent: Sunday, 9 May 2010 9:21 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Brake linebleeding
I didn't mean to confuse, I have done this recently, and since I have a '78
I check the supplement first out of habit.
--
Tony W.
Kirkland, WA
'78 Kingsley
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_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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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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