4107 Air shut off valve and power steering fluid questions....

[daddyoften]

4107 with upgraded power steering and up air controls on the engine questions....

First off, any idea what I should run in the Power steering system?  I don't know what kind it is.  The PO did it and he has passed on.  Is it typical to run ATF?  Anything I can look at or take pics of to know what system I have?

Second.  The air shut off solenoid is plumbed in the air compressor governor.  So it only get air pressure to shut the engine off once the air compressor reaches govern pressure.  This also applies to me fast idle.  The PO installed a transplant engien from a transit and upgraded the throttle to air as well.  All works fine except I have to let the engine run long enough to build complete air pressure before I shut it off.  Is this right?  There is a regulator between the governor and the air solenoids.  Can I re plumb this into a regular air line?  Or does it have to be off the governor? 

Third.  There is a regulator under the drivers seat in the "tool" compartment.  It's leaking out the vent.  Is this a special regulator or can I just replace it with a standard regulator and to what pressure do I set it to?

Thanks!
Eric

[daddyoften]

anybody? anything? somebody?   

[Dave5Cs]

If its red is probably ATF if oil color probably 20 weight oil.

[wildbob24]

First: The original power assist steering used ATF.

If it's been upgraded to Sheppard integral power steering it will use motor oil. You can use the same oil as in the engine.

Second: the solenoids should be fed directly from the wet tank. That same line tees to one of the regulator ports on the governor so it can react to the reservoir pressure. From your description, it sounds liked the governor is not plumbed correctly.

Third: that regulator is special in that it serves to isolate the accessories and suspension from the brake system. It will not allow air to flow to the accessories or suspension until the pressure in the brake system has reached 65psi. A standard regulator won't do that.

Bob

[daddyoften]

Thanks, I'll take a look at the way it's plumbed. I'm pretty sure I have a Shepard steering on it. I can turn the wheels with just the hub of the steering wheel at a stand still. Definitely will be putting a much smaller steering wheel in it

[buswarrior]

The governor has a sensing/supply line back from the wet tank.

That can be used to provide power the shut down circuit.

Sounds like someone messed up all the connections from supply to discharge when they had something apart?

happy coaching!
buswarrior

[Dave5Cs]

In my MCI I have the TRW Ross upgrade and it has always had ATF and I know a lot of people with the same who use 20 weight oil and it actually runs smoother.