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Transmission Discussion of preventative/corrective maintenance and other technical issues regarding your coach's transmission.

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  #11  
Old 08-15-2018
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Since the brake switch is pressure operated, you need to build a little pressure to activate it which takes a half second or more. Then the throttle drops and you get an annoying jerky slowdown. Maybe some coaches are quicker than others to react, but it is an annoying procedure on mine.

I Like the button idea.

P.S.
Cars use an electric switch that is activated as soon as the pedal moves, it does not require activating the brakes so it is quicker and less noticeable.
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Last edited by gcyeaw; 08-15-2018 at 07:30 AM.
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  #12  
Old 08-15-2018
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Quote:
Originally Posted by Alever View Post
Jim. I am looking to use it as a cancel to let the bus coast down to a slower speed when needed instead of tapping the brake all the time. When I tap the brake or apply light pressure to get the cruise to disengage the bus seems to jerk a little and it gets annoying. Stopping and slowing down is nice and smooth with no jerking or pulling. But just trying to get the cruise disabled with the brakes makes the bus jerk. I believe the cruise is trying to accelerate to keep speed up even though I am applying the brakes until the pressure switch tells it to turn off.
My thoughts was to put a momentary switch near the cruise control switches that is just a quick push to cancel the cruise and make it nice and smooth.
Quote:
Originally Posted by gcyeaw View Post
Since the brake switch is pressure operated, you need to build a little pressure to activate it which takes a half second or more. Then the throttle drops and you get an annoying jerky slowdown. Maybe some coaches are quicker than others to react, but it is an annoying procedure on mine.

I Like the button idea.

P.S.
Cars use an electric switch that is activated as soon as the pedal moves, it does not require activating the brakes so it is quicker and less noticeable.
OK guys. I think I get it now. The jerking issue wasn't mentioned initially so I understand how that may be a PIA. I don't experience that at all on my bus. So, I'm wondering if you don't have another issue. Like Bill said, the cruise and retarders don't work well together, in that the retarder will cancel the cruise. If you have the retarder on with the cruise maybe that might be part of it. I never use both at the same time, but on a few occasions I have forgotten it was on and still never experienced what you describe. Sorry, I can't help you with this one.
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  #13  
Old 08-15-2018
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Quote:
Originally Posted by Alever View Post
Jim. I am looking to use it as a cancel to let the bus coast down to a slower speed when needed instead of tapping the brake all the time. When I tap the brake or apply light pressure to get the cruise to disengage the bus seems to jerk a little and it gets annoying. Stopping and slowing down is nice and smooth with no jerking or pulling. But just trying to get the cruise disabled with the brakes makes the bus jerk. I believe the cruise is trying to accelerate to keep speed up even though I am applying the brakes until the pressure switch tells it to turn off.
My thoughts was to put a momentary switch near the cruise control switches that is just a quick push to cancel the cruise and make it nice and smooth.
I'm curious as to why you're not just using the set/coast rocker switch to coast down to a lower set speed instead of tapping the brakes?
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  #14  
Old 08-15-2018
Nelson007 Nelson007 is offline
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Originally Posted by Dieselbird01 View Post
I'm curious as to why you're not just using the set/coast rocker switch to coast down to a lower set speed instead of tapping the brakes?
That’s how I have been doing it since my first but in 88.
Nelson
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  #15  
Old 08-15-2018
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Quote:
Originally Posted by Dieselbird01 View Post
I'm curious as to why you're not just using the set/coast rocker switch to coast down to a lower set speed instead of tapping the brakes?
Sometimes I just want to disengage it without stepping on the brake, Why? A host of little reasons, but my fingers are tired from typing. As we used to say at IBM, "We don't answer why"' questions
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  #16  
Old 08-15-2018
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Default Cruise control disconnect

Gardner I agree. I added a switch on our FC and will be doing the same on the WB42. It is very handy to disconnect when the car/truck in front of you slows down for no reason.
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  #17  
Old 08-15-2018
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Quote:
Originally Posted by Dieselbird01 View Post
I'm curious as to why you're not just using the set/coast rocker switch to coast down to a lower set speed instead of tapping the brakes?
Quote:
Originally Posted by gcyeaw View Post
Sometimes I just want to disengage it without stepping on the brake, Why? A host of little reasons, but my fingers are tired from typing. As we used to say at IBM, "We don't answer why"' questions
I just use the factory installed cruise control "on/off" switch for that.
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Titusville, Florida
1991 40' WLWB-WTB
Body Number F095567
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1991 40' WB ...From 2008 - Present
1984 ½ PT-36 .From 2000 - 2008
1973 FC-31 .....From 1991 - 2001
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  #18  
Old 02-18-2019
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Default Cruise Control Disconnect

On our 95 WB42 there is a horn button on the directional signal stalk. This button is not used and I found the wire taped of with the wires leading from the directional switch forward. The wire you need is the brown with yellow tracer. It gets 12volts when the button is pushed. I extended this wire to the now unused disconnected 22C relay coil, the other side of the coil I hooked to ground. I used the normally open contacts 30 and 87 to provide 12 volts from a 15 amp breaker SK4 to the terminal strip in front , terminal 5 for the stop lights. If I tap the button it provides 12VDC to the brake lights and cancels the cruise control without loosing the settings.
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  #19  
Old 02-18-2019
Flyfisher Flyfisher is offline
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Quote:
On our 95 WB42 there is a horn button on the directional signal stalk. This button is not used and I found the wire taped of with the wires leading from the directional switch forward. The wire you need is the brown with yellow tracer. It gets 12volts when the button is pushed. I extended this wire to the now unused disconnected 22C relay coil, the other side of the coil I hooked to ground. I used the normally open contacts 30 and 87 to provide 12 volts from a 15 amp breaker SK4 to the terminal strip in front , terminal 5 for the stop lights. If I tap the button it provides 12VDC to the brake lights and cancels the cruise control without loosing the settings.

Very innovative Lucas, I like being able to cancel the cruise without having to tap the brake pedal or turn it off and loose the settings. You just gave me another mod to do and a good one. When you get to it that same terminal strip point is used for the Jake brake mod for brake pedal actuation.
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  #20  
Old 02-18-2019
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Quote:
Originally Posted by lucaswillemse View Post
On our 95 WB42 there is a horn button on the directional signal stalk. This button is not used and I found the wire taped of with the wires leading from the directional switch forward. The wire you need is the brown with yellow tracer. It gets 12volts when the button is pushed. I extended this wire to the now unused disconnected 22C relay coil, the other side of the coil I hooked to ground. I used the normally open contacts 30 and 87 to provide 12 volts from a 15 amp breaker SK4 to the terminal strip in front , terminal 5 for the stop lights. If I tap the button it provides 12VDC to the brake lights and cancels the cruise control without loosing the settings.

I like it too.
Plus its a great way to mess with tailgators..
I have another use for that horn switch,the LXIs don't have cornering lights and i want to add some bright LEDS somewhere near the bumper,that switch could turn those lights on with ease.
Thanks for the switch idea!
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