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OEM Cruise Control [message #368084] Fri, 17 December 2021 16:14 Go to next message
Ernest Dankert is currently offline  Ernest Dankert   United States
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My OEM cruise control is not releasing when I "hit the brakes". It will coast down by holding the engage button in or by shutting the engine off. I could not find an addendum chapter on the cruise control in the manual. Any insight is appreciated.

1977 Eleganza II
Ogden NY

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Re: OEM Cruise Control [message #368087 is a reply to message #368084] Fri, 17 December 2021 17:22 Go to previous messageGo to next message
lqqkatjon is currently offline  lqqkatjon   United States
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There is a simple switch on the brake pedal. (You will find 2). 1 is for the cruise. It can easily be tested and adjusted.



Jon Roche 75 palm beach EBL EFI, manny headers, Micro Level, rebuilt most of coach now. St. Cloud, MN http://lqqkatjon.blogspot.com/

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Re: OEM Cruise Control [message #368088 is a reply to message #368084] Fri, 17 December 2021 17:28 Go to previous messageGo to next message
lqqkatjon is currently offline  lqqkatjon   United States
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Here is the goto book too.

http://www.bdub.net/1968-1982_Cruisemaster_Cruise_Control.pdf

Jon Roche 75 palm beach EBL EFI, manny headers, Micro Level, rebuilt most of coach now. St. Cloud, MN http://lqqkatjon.blogspot.com/

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Re: OEM Cruise Control [message #368089 is a reply to message #368084] Fri, 17 December 2021 17:28 Go to previous messageGo to next message
JohnL455 is currently offline  JohnL455   United States
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Slide switch towards pedal. Lift pedal by hand. Switch ratchets and self adjusts.

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: OEM Cruise Control [message #368104 is a reply to message #368089] Sat, 18 December 2021 01:50 Go to previous messageGo to next message
Ken Burton is currently offline  Ken Burton   United States
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IIRC that switch also ha a vacuum line connected to it. When you step on the brake, the switch is suppose to kill CC electrically AND, as a safety measure, open the vacuum line so it an not stick on.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: OEM Cruise Control [message #368106 is a reply to message #368084] Sat, 18 December 2021 08:26 Go to previous messageGo to next message
Matt Colie is currently offline  Matt Colie   United States
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Ernest,

I dug into mine really deeply (before I abandon it in favor of a 30+yo Dana in my junk collection) and one thing that should happen is the operating vacuum should be broken by a valve on the brake pedal. That is what the purpose of one rubber lines from the cruise device into the cab is.
So, I would guess that either that line is plugged or there is something amiss with the valve on the brake pedal.

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: OEM Cruise Control [message #368123 is a reply to message #368084] Sat, 18 December 2021 16:40 Go to previous message
Ernest Dankert is currently offline  Ernest Dankert   United States
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Registered: May 2007
Location: Ogden, New York
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I had trouble with the cruise control not holding a steady set point. I could not locate a replacement so I disassembled it and lubricated with silicone grease. It worked great for 6 months. I just discovered Jim K has the switch and an order is in order.

I was surprised the service manual was silent on the cruise master.

1977 Eleganza II
Ogden NY

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