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[GMCnet] Extremely Hard Brake Pedal Force Required to Stop 1978 Royale [message #301796] Tue, 07 June 2016 15:24 Go to next message
Afastchief is currently offline  Afastchief   United States
Messages: 9
Registered: October 2011
Location: King NC
Karma: 0
Junior Member
I would like to thank each person who took the time to help troubleshoot my
powerless brakes. I found the vacuum reservoir check valve defective and
replaced it and brakes were 50% better but still required a good deal of
force to "Wow" it up. After I got home from our six day trip from King, N.C
to Henrietta Texas(2,450 miles) the brakes had deteriorated considerably
more. I got under the hood "*again*" and this time I could here whistling.
I run my hand around the vacuum chamber and Wah-la....there it was. My hand
was sucked in toward the rubber plug in side of vacuum booster. I suppose
the dummy plug is there in case you want to pull vacuum from either side of
chamber depending upon the vehicle it is being installed in. I temporarily
duct taped the hole and Wah-la again, I have brakes. Again, thank each of
you that helped point me in the correct direction.

Alan Edmondson
King, N.C.
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Alan Edmondson King, NC 78 Royale, engine bay insulation, dual cockpit fans, Victron 160A isolator, Yandina combiner, Victron BMV 700 battery monitor with Bluetooth, Progressive Dynamics 9200 converter
Re: [GMCnet] Extremely Hard Brake Pedal Force Required to Stop 1978 Royale [message #301797 is a reply to message #301796] Tue, 07 June 2016 15:46 Go to previous messageGo to next message
sgltrac is currently offline  sgltrac   United States
Messages: 2797
Registered: April 2011
Karma: 1
Senior Member
Boy I do so love happy endings!

Sully
77 Royale
Seattle

On Tuesday, June 7, 2016, Alan Edmondson wrote:

> I would like to thank each person who took the time to help troubleshoot my
> powerless brakes. I found the vacuum reservoir check valve defective and
> replaced it and brakes were 50% better but still required a good deal of
> force to "Wow" it up. After I got home from our six day trip from King, N.C
> to Henrietta Texas(2,450 miles) the brakes had deteriorated considerably
> more. I got under the hood "*again*" and this time I could here whistling.
> I run my hand around the vacuum chamber and Wah-la....there it was. My hand
> was sucked in toward the rubber plug in side of vacuum booster. I suppose
> the dummy plug is there in case you want to pull vacuum from either side of
> chamber depending upon the vehicle it is being installed in. I temporarily
> duct taped the hole and Wah-la again, I have brakes. Again, thank each of
> you that helped point me in the correct direction.
>
> Alan Edmondson
> King, N.C.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Sully 77 Royale basket case. Future motorhome land speed record holder(bucket list) Seattle, Wa.
Re: [GMCnet] Extremely Hard Brake Pedal Force Required to Stop 1978 Royale [message #301806 is a reply to message #301797] Tue, 07 June 2016 20:08 Go to previous message
tphipps is currently offline  tphipps   United States
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
Senior Member
WD-40 and Duct Tape holds the World together. Glad it was an inexpensive and easy fix once the problem was found.
Tom, MS II


2012 Phoenix Cruiser model 2552 KA4CSG

[Updated on: Wed, 08 June 2016 06:46]

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