Txt problems? Need advice

[bizle]

Okay I just swapped out cylinoid xan diodes between carts and it appears both solenoids are good. Now I am getting 38 volts in and 38 volts out of the solenoid but when I push the pedal the solenoid clicks I have no power at all at M-

[JohnnieB]

You have 38V at the controller side of the solenoid, so check for 38V at the controller's B+ terminal.
If you have it there, check for 38V on the voltage on the A stud on the F/R switch.
Then the D stud on F/R
Then the S2 stud on motor
Then the S1 stud on motor
Then the C stud on F/R
Then the B stud on F/R
Then the A2 stud on motor
Then the A1 stud on motor
Then the M- stud on controller.

Then check for voltage on the B- stud on controller. Personally, I check this one first.

[bizle]

So here's where I'm at now. Speed controller is good solenoid is good, battery pack voltage is at 38 volts.
I have checked all my wires and connections and everything seems to be good.
Key on I press the pedal in the solenoid clicks.
I have 38 volts in and out of the solenoid and 38 volts at the bottom of the f&r switch.
M- has no voltage at all

[bizle]

Originally Posted by JohnnieB

You have 38V at the controller side of the solenoid, so check for 38V at the controller's B+ terminal.
If you have it there, check for 38V on the voltage on the A stud on the F/R switch.
Then the D stud on F/R
Then the S2 stud on motor
Then the S1 stud on motor
Then the C stud on F/R
Then the B stud on F/R
Then the A2 stud on motor
Then the A1 stud on motor
Then the M- stud on controller.

Then check for voltage on the B- stud on controller. Personally, I check this one first.

Okay I'm going to get back at it after dinner this evening I truly appreciate all your help

[JohnnieB]

Originally Posted by bizle

Okay I'm going to get back at it after dinner this evening I truly appreciate all your help

I'm shutting down for the evening soon.

The problem will be located between the last place you have voltage and the first place you didn't.

[bizle]

One last question. Can you tell me in what order are the ABC and D studs on the f&r switch?
With the switch still mounted in the cart which one is top bottom left right excetera

[JohnnieB]

Physical layout is as shown on the schematic I posted.

A is on bottom and count clockwise for BCD.

Merry Christmas.

[bizle]

Ok key on lever in forward position
I have 38v on A and nothing on b c or d
Lever in reverse i have 38v on A B and D

[JohnnieB]

Should have voltage on all 4 studs in either F or R.
You have voltage on A in both F and R, so there is a bad contact on the cam that moves.

Take the F/R apart and you'll probably be able to see which one. It will likely be burnt or melted.

Be sure to mark the position (edges) of the mounting bracket where it is bolted to cart. That'll make getting the mechanical adjustment of the replacement F/R correct much easier.

[bizle]

Okay after working on it for a while I now have 38 volts everywhere all 4 studs of the f&r switch shows 38 volts and now I have 38 volts at the speed controller on M-
Cart still won't do anything but click from the solenoid