Controlling Hi/Low Range and Front Axle Lock From a Shift Knob

[Lieutenant Dan]

What kinda of slave valve did you use.....

I'm still trying to figure this out how you did that. I have been pondering this for awhile. I can't do it with my valves cause when it's plumbed to be NC and then switched to open the NC circuit doesn't vent pressure.

 

[GregSLSTJ]

Well i'm not exactly sure how your valves work but my set up didn't work either until it was completely hooked up. It does rely on feed back pressure to change state of the slave valve. These are the parts I used, right from a heavy truck parts place.
Eaton Fuller Hi/Low shift knob - A3546
Eaton Fuller range slave valve - A5000
Speedaire cylinder - 5MMD4 - 1 1/16 bore 5 in. stroke 2 way
pressure regulator from hardware store

 

[Lieutenant Dan]

Ok so now that I've found what valve your using that is what makes your system work. I have the road ranger shift knob and the A5000 valve is the missing link to make this work with a dual acting cylinder. I can't do It with my valves cause they won't let the cylinder exhaust from both sides. The A5000 is basically a single pole dual throw relay but let's both the high range and low range exhaust when pressure is not applied to them. I will be getting this valve and going with and dual acting cylinder. I'll use my single acting cylinder for my exhaust brake.

If you read this pdf it explains exactly how to plumb the knob both old style and new style like mine. It also explains how they work and trouble shooting them. Thanks for this Greg. If you could can you post a video of shifting your truck and operation of the cylinder? A stationary video would be fine I just want to see how the cylinder operates.

 

[GregSLSTJ]

it's all made to work together so it's simple once you have it in front of you and like I said you can bench test it while drinking a couple cold ones..
When I get a chance (and figure out how to post it) I will upload a video.

 

[Lieutenant Dan]

So I got the valve today and it's going to work perfect..... the other valve for the transfer case will mount right on top of other valve perfectly. Need a few more fittings and I'll be golden

 

[rustystud]

LT Dan, where did you get and what are the part numbers of the valves you are using ? They are different then Greg's .

 

[Lieutenant Dan]

I got a parker valve from work. We use them on lift axles. It's parker #520511000.

 

[Lieutenant Dan]

Here is a video of it plumbed and working. Just have to mount the cylinder and hook it to the lever. This cylinder is freaking strong. Way stronger then a normal push would be. I'm stoked how this is turning out.

http://youtu.be/ydQHP4cgtuw

 

[GregSLSTJ]

Looks good lieutenant Dan, those cylinders are stronger than you would think. That's why I cut pressure down, also it will help slow the action of the cylinder down a bit. If you had full 120 psi it would try to shift the transfer case to fast and most likely break something. Those cylinders are lightning fast!

 

[Lieutenant Dan]

I'm thinking maybe a flow controller instead of pressure regulator.... That way you can keep the strength but slow the motion.

 

[Another Ahab]

Way cool: very inventive.

 

[bonedoc]

Looks really good Dan. That is going to be very cool.

 

[rustystud]

Dan, could you post a diagram of how you have your hoses routed to the valves please. Also the electrical. Thanks rustystud.