5 Ton Air governor cut in & cut out

[kaiser2help]

Is there anyone familiar with making adjustment to the air system governor. I am looking to cut in at 65 psi. and to cut out at 110 psi. It is a 1954 M54-A2 Multifuel. I am not sure if the inner adjustment is for the low or high. And vise versa for the larger adjuster. Any help would be great.

 

[m.walker]

Look in the manual , it's fairly easy . Been a long time since I did it , but mine kicked off at 95 psi so I bumped it up to 125 . I think it was like a 5/16 wrench and you turn it a little at a time to raise it . Mine's a 1957 M52 so it should be similar to yours . It's on the firewall to the left of middle , just follow the airline off the compressor .

 

[kaiser2help]

This is truly alarming.

 

[alphadeltaromeo]

What's alarming?

 

[kaiser2help]

The absence of...............some tech info.

 

[area52]

Try the manuals, they are quicker than some of us.

 

[BEASTMASTER]

i've been screwing with mine for 4 years and maybe some day i'll figure it out. if i do i'll let you know

 

[kaiser2help]

Good to hear from you BM. This is a serious pain. I am close to fixing it. so I will let you know with a post.

 

[gimpyrobb]

Mwlaker's post sounded like it answered the question.

 

[bradmachine]

just bought a 5 ton and haven't had a chance to look it over yet...but I know a little about air governors, if they don't take adjustment, if they operate erratically, don't work right...get a new one....they are relatively cheap. and if you can get to it easily, the worst is over....take it off and in to a truck parts place.....you should get a new one for $20 or less...they used to be $12....and it will be preset and work....the o-rings get worn and they just won't work right.....if it will adjust, then do it, but if it is not consistent..get a new one before it drives you crazy...

 

[kaiser2help]

Sound like a good idea. I will try my local truck parts dealer. I wonder if it is a bendix part originally? I will try to find out.

 

[bottleworks]

You can't set the engagement pressure independent of the disengagement pressure. They are relative to each other. If it won't adjust up or is erratic, just replace it. IIRC, counterclockwise adjustment will increase the pressure.

 

[kaiser2help]

Thankyou for the help. Would someone know who the manufacturer is or know of a cross reference for the retro fit. It is probably tired . It did appear to be in good shape though. Maybe I will try to replace the large o-ring inside the body housing.