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| Re: [GMCnet] Bleeding Brakes and the J-23709 Tool [message #63324 is a reply to message #63323] |
Fri, 06 November 2009 18:43   |
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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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Tim,
One comment, if you don't know when the brake fluid was changed last you
might want to do that first.
Check this picture from Jim Bounds website:
http://www.gmccoop.com/Brake-master-funk.jpg
If you do decide to blow out and flush the system the ATE Type 200 and ATE
Super Blue Racing Fluid are the best I've been able to find.
Disclaimer: If anyone knows of a DOT 4 brake fluid with a higher boiling
point dry or wet or a longer manufacturer's recommended change interval
PLEASE let me know! DOT 4 not DOT 5!
http://tinyurl.com/q2xtm
http://www.ate-na.com/generator/www/us/en/ate/ate/themes/20_ate_brake_produc
ts/50_brake_fluid/bf_info_us.html
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 Tim Pledger
Sent: Saturday, 7 November 2009 11:27 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Bleeding Brakes and the J-23709 Tool
Thank you to all that have replied to my brake question. I appreciate the
tips.
I may have more questions tomorrow if the bleeding does not fix my issue.
Hopefully it was just air in the system.
Cheers,
TJ
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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] Bleeding Brakes and the J-23709 Tool [message #63335 is a reply to message #63319] |
Fri, 06 November 2009 21:09 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| GMCWiperMan wrote on Fri, 06 November 2009 18:07 |
Tim,
As shown in this photo:
http://www.gmcmhphotos.com/photos/showphoto.php?photo=5332
the pin only needs to compress a very small spring to open the
metering valve bypass. Almost anything that can be applied to the pin
should depress it: A strong rubber band; a short piece of steel with
a hole in each end for a spring to reach around the other end of the
combination valve; a squeeze-handle clamp; etc. No need to devote a
lot of effort to fabrication.
Ken H.
On Fri, Nov 6, 2009 at 5:05 PM, Tim Pledger <tjsnout@gmail.com> wrote:
> I am bleeding the brakes tomorrow.
>
> Today I hope to fabricate this J-23709 tool.
>
> Does anyone have a drawing or has one to measure? I would be very thankful
> for some rough measurements.
>
> Cheers,
>
> TJ
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Ken You are still sending duplicate postings. One at 18:06 and one at 18:07
Ken B.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Bleeding Brakes and the J-23709 Tool [message #63347 is a reply to message #63337] |
Sat, 07 November 2009 00:27 |
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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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Ken,
It appears that the duplicates only occur on new messages you write, if you
reply to an existing message it doesn't happen.
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 Ken Henderson
Sent: Saturday, 7 November 2009 2:23 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Bleeding Brakes and the J-23709 Tool
Ken,
Thanks for that information. I was about ready to ask whether anyone
was still getting them. Is it a rarity or every message?
Ken
On Fri, Nov 6, 2009 at 10:09 PM, Ken Burton <n9cv@comcast.net> wrote:
> Ken You are still sending duplicate postings. One at 18:06 and one at
18:07
>
> Ken B.
>
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GMCnet mailing list
List Information and Subscription Options:
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_______________________________________________
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] Bleeding Brakes and the J-23709 Tool [message #63350 is a reply to message #63337] |
Sat, 07 November 2009 01:41 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| GMCWiperMan wrote on Fri, 06 November 2009 21:23 |
Ken,
Thanks for that information. I was about ready to ask whether anyone
was still getting them. Is it a rarity or every message?
I really thought I'd cured it by using only GMail's web-based mail
client (and the new beta off-line version). I'm really baffled now.
When I first started using GMail, I was receiving duplicates of my own
emails until I turned off email forwarding yesterday. If you get
another duplicate, will you check the full headers and tell me what
each shows for sender?
Ken
On Fri, Nov 6, 2009 at 10:09 PM, Ken Burton <n9cv@comcast.net> wrote:
> Ken You are still sending duplicate postings. One at 18:06 and one at 18:07
>
> Ken B.
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I am seeing duplicates from you on the forum so I can not see the headers.
BUT...
You sent me an off-net email tonight that I received using Outlook Express. It also was duplicated so I copied the beaders from both of those and sent them back to both your Bell South id and your Gmail id.
This should give you what you want.
Ken B.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Bleeding Brakes and the J-23709 Tool [message #63356 is a reply to message #63350] |
Sat, 07 November 2009 09:48 |
LarryInSanDiego
Messages: 336
Registered: September 2006
Karma: 0
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Senior Member |
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How much pressure is needed to depress the pin? I have tried to depress mine and found no noticeable movement when doing a prior bleed. However, when the rear reservoir was empty, I noticed the pin protruding further outward when I had someone depress the pedal (MC replacement happening today).
Larry Engelbrecht
San Diego, CA
'73 26' ex-Glacier
TZE063V100319 03/07/73
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| Re: [GMCnet] Bleeding Brakes and the J-23709 Tool [message #63362 is a reply to message #63356] |
Sat, 07 November 2009 12:07 |
GMC_LES
Messages: 569
Registered: October 2009
Location: Montreal
Karma: 0
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Senior Member |
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On my coach, the pin was jammed in the out position after suffering a failed
rear brake line. I had to lightly tap the pin to persuade it to return to
the normal position so I could properly bleed the brake system. I then held
it in position with a c-clamp during the bleeding procedure. Worked like a
charm!
Even with the rear brakes not working, I still had some braking on the front
wheels. How would this be possible if 135psi is needed on the rear before
you get front braking? There must be some seepage allowed through the
combi-valve to allow the front brakes to function in a reduced capacity.
Les Burt
Montreal
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Les Burt
Montreal
1975 Eleganza 26ft
A work in Progress
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| Re: [GMCnet] Bleeding Brakes and the J-23709 Tool [message #63371 is a reply to message #63362] |
Sat, 07 November 2009 13:16 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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| Les Burt wrote on Sat, 07 November 2009 12:07 |
On my coach, the pin was jammed in the out position after suffering a failed
rear brake line. I had to lightly tap the pin to persuade it to return to
the normal position so I could properly bleed the brake system. I then held
it in position with a c-clamp during the bleeding procedure. Worked like a
charm!
Even with the rear brakes not working, I still had some braking on the front
wheels. How would this be possible if 135psi is needed on the rear before
you get front braking? There must be some seepage allowed through the
combi-valve to allow the front brakes to function in a reduced capacity.
Les Burt
Montreal
|
I had the opposite result when I blew a wheel cylinder coming off an exit ramp in Louisiana. No brakes for the stop sign at the end of the ramp. I sailed into the cross street. The problem was a blown left rear wheel cylinder.
I never understood the operation of that combo valve. It could be mine is bad. I just screwed a cap on the line to the bad cylinder and drove back to Chicago on 5 wheel brakes. I replaced all 4 rear cylinders after I got back home.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Bleeding Brakes and the J-23709 Tool [message #63411 is a reply to message #63388] |
Sat, 07 November 2009 21:57 |
GMC_LES
Messages: 569
Registered: October 2009
Location: Montreal
Karma: 0
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Senior Member |
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I'll be tearing my combi-valve apart sometime over the winter. It leaks
slightly when I hold the pin in with a c-clamp. No leak in the running
position. I will be installing 6 discs, so the valve needs to come apart
anyway. I'll have a closer look while it is apart and try to find the answer
to my own question.
Les Burt
Montreal
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Les Burt
Montreal
1975 Eleganza 26ft
A work in Progress
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| Re: [GMCnet] 66 tornado transmission & final drive [message #64258 is a reply to message #64249] |
Sat, 14 November 2009 16:44 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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Is a 66 425 Toro trans case the same as a 73/74 GMC 425 trans case? I know the guts in a GMC trans are not the same as a Toro. I have a 73/74 GMC 425 trans with a very damaged bell housing (not repairable).
Of course it would cost $200 in gas and a day to go pick it up.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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