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Tires, Wheels, Brakes, Steering and Suspensions Discussion of preventative/corrective maintenance and other technical issues regarding your coach's Tires, Wheels, Brakes, Steering and Suspensions and related components.

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  #31  
Old 12-02-2018
Dog Leg Bill Dog Leg Bill is online now
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Quote:
Originally Posted by Friday1 View Post

The rubber cap on your governor sits on the pressure adjustment. Most of them adjust by turning the center screw with the slot in it. Turn it in the CCW direction to make the pressure go up and CW to make the pressure go down. Tighten the jam nut to retain your adjustment. Bleed off some air and let the system build up to make sure it is adjusted for about 125 psi.

Rick in Ohio
So the governor is adjustable, interesting but I bet adjusting it will be every bit of a pain than installing it was.

Quote:
Originally Posted by Randy Dupree View Post
140 is too high if the tank pop off valve is popping off.
I am wondering why extra pressure is a bad thing? As you can see the dash gauges show 145-150 psi but at the schrader valve I am seeing 130.
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  #32  
Old 12-02-2018
badandy badandy is offline
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https://parts.jacobsvehiclesystems.c...dfs/003879.pdf

PDF Page 10 shows this high idle buffer. There's not much to it. I'm pretty sure it's just way out of adjustment. Coincidentally does the Jake work?
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  #33  
Old 12-02-2018
Dog Leg Bill Dog Leg Bill is online now
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Quote:
Originally Posted by badandy View Post
https://parts.jacobsvehiclesystems.c...dfs/003879.pdf

PDF Page 10 shows this high idle buffer. There's not much to it. I'm pretty sure it's just way out of adjustment. Coincidentally does the Jake work?
Thanks for the link, I am a bit hesitant to play with the buffer switch having read on this sight about runaway motors resulting.

The jakes can be tricked into working, be that I mean bypass the torque convertor locked switch, rev the motor up, pull into idle cut off, then with a screwdriver close the micro switch connection and you can hear the jakes engage.
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1984 PT40
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1978 Porsche 928
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  #34  
Old 12-02-2018
Friday1 Friday1 is offline
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Quote:
Originally Posted by Dog Leg Bill View Post
So the governor is adjustable, interesting but I bet adjusting it will be every bit of a pain than installing it was. Adjusting the governor takes all of 20 seconds. Look for a youtube.



I am wondering why extra pressure is a bad thing? As you can see the dash gauges show 145-150 psi but at the schrader valve I am seeing

130.
The components in the air brake system are made for 125 psi. Adjusting the governor takes all of 20 seconds. Look for a youtube.
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Last edited by Friday1; 12-02-2018 at 11:15 PM. Reason: info
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  #35  
Old 12-03-2018
Dog Leg Bill Dog Leg Bill is online now
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Quote:
Originally Posted by Friday1 View Post
Adjusting the governor takes all of 20 seconds. Look for a youtube.
Sorry to sound like a whiny child, obviously loosening a nut and turning a screw is simple enough. It's just that contorting my, let's say less than svelte, belly into that area is a bit of a task.
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1984 PT40
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1978 Porsche 928
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  #36  
Old 12-03-2018
GregOC GregOC is offline
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Won't be the maxicam spring diaphragm but doesn't hurt to chock tires and test park brake health.one of those things that burns up rigs
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  #37  
Old 12-03-2018
Friday1 Friday1 is offline
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OOoops, was thinking FC right up on the compressor. Maybe now is the time to move your governor.



Rick in Ohio
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  #38  
Old 12-06-2018
Dog Leg Bill Dog Leg Bill is online now
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The governor has been adjusted but now I'm questioning the gauges. When I check pressure at the schrader valve it consistently read about 15 - 20 psi below dash gauges. I used multiple pressure gauges and the readings are consistent.

Any thoughts on this, does the schrader valve read the compressor vs the holding tanks or something along those lines?
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