Voltage must be in the range of 1.2 to 5.6 Volt in extreme positions.To fall below 0.9 volt prohibited state

Thank you for the help your advice was right on

Hey Step, how you been?

I try to take a peek. I get busy and don't have time to post but always enjoy reading.

good to see you back and busy posting, justin...

Hi there.
You don't calibrate it you just set it. Use a GOOD voltmeter. (lol)

-Put the steer tire in the straight ahead position.
-turn key off
-loosen coupling
-Connect (back probe) your positive lead to wire 68 (terminal 2, middle connection) on the 3 pin potentiometer connection.
-Connect your negative lead to battery negative
-turn key on
-set voltage to 2.5v +/-.02v (between 2.48 and 2.52 volts)
-tighten coupling and recheck voltage.

Don't turn the wheel while you're setting the voltage.
The dash display method is the same thing but it just reads the voltage on the dash.

I tried my handset but it would not calibrate, I could monitor traction settings. I talked to a local Hyster dealership and they told me I needed an e-tach (spelling?) program. This unit had four controllers, one for each traction, one for pump, and one more, I am guessing an interface? This is the one that came up communication error on my handset, is this the controller I need to access to make calibrations to the pots? The fourth board, the interface, was a curtis pmc, the two drives were curtis sep-ex, and the other was a curtis pump controller. The problem with ohming is that is I was helping out a another tech who removed it, he broke of the head of the pot set screw so he was using vice grips to tighten it. You have to turn the steering to access it. I have no idea what the ohms on the pot were, or the position of the steering when it was removed so it would take a lot of trial and error.

Hi Jeremy,
Most likely you will need a curtis handset. It can be ohmed out but it's not the most accurate or easy to do.