Cart wont move

[Pablob]

I have a 2002 Ezgo txt I have installed an AXE 4855 new motor large cables heavy f/r switch ran great for two months then it quit. I no voltage on my switches until I found out the interlock switch was bad I by pass that now the controller LED comes and reverse horn works but the cart wont move the solenoid clicks and is the large one 1000amp max. anyone have any thought

Thanks Pablo

[JohnnieB]

Lift rear tires off ground and put on jackstands so half ton cart doesn't take off unexpectedly and run over someone.

Connect your DVM between the B- and M- terminals on controller.
Key = ON
F/R = F or R
Press pedal just far enough to make solenoid click.
You should read FULL battery pack voltage.

If not, follow the high current cables from the M- terminal through the motor and F/R switch to the B+ terminal using the meter probe that was on the M- terminal. When you find the pack voltage, the problem lies between that point and the last point you didn't have pack voltage.

[Pablob]

thanks i will i give that a try and what happens

[Pablob]

Here's What I came up with B- to M- 19.2v press throttle tell solenoid clicks 1.82v, B- to A1 same B- to A2 same, B- to switch C same, B- to Switch A same, when I went B- to B+ I had 37.2v then push throttle and got 38.8v pack voltage. What I'm seeing is that the problem is the motor or the F/R switch. Can u think of any other checks I can do to refine it down a little more

[JohnnieB]

Originally Posted by Pablob

Here's What I came up with B- to M- 19.2v press throttle tell solenoid clicks 1.82v, B- to A1 same B- to A2 same, B- to switch C same, B- to Switch A same, when I went B- to B+ I had 37.2v then push throttle and got 38.8v pack voltage. What I'm seeing is that the problem is the motor or the F/R switch. Can u think of any other checks I can do to refine it down a little more

You didn't check S1, S2, B or D.

However, if the cable from A is connected to the B+ terminal as shown on the schematic, it is bad. You have voltage on one end of it, but not the other.

[Pablob]

John u are saying the cable from A to B+ might be bad?

[JohnnieB]

Originally Posted by Pablob

John u are saying the cable from A to B+ might be bad?

Yes.

If you have full pack voltage on one and next to nothing on the other end, it isn't good, but it could be a dirty connection rather than a broken cable.

[Pablob]

Well we found the problem it was the F/R switch one of the lugs was fried, this is a friend of mines cart he didn't tell me that he has replace the F/R switch a couple times before that would have been the first place I would have looked. He said since put all new stuff in that would fix the problem. So what I'm thinking now is the linkage is either to short or long and it's not aligning up right when he shifts into gear.

[asbenrud]

It might be a high voltage circuit

[JohnnieB]

Originally Posted by Pablob

Well we found the problem it was the F/R switch one of the lugs was fried, this is a friend of mines cart he didn't tell me that he has replace the F/R switch a couple times before that would have been the first place I would have looked. He said since put all new stuff in that would fix the problem. So what I'm thinking now is the linkage is either to short or long and it's not aligning up right when he shifts into gear.

I'm not up to speed on aligning the mechanics of a series F/R switch since I don't have a series cart, but with a 500A controller I'd suggest installing one of Cart Unlimited's Heavy-Duty F/R switches (best one around): http://www.cartsunlimited.net/F_R_Switch_Upgrades.php

Or a Super-Duty reversing contactor: http://www.cartsunlimited.net/Reversing_Contactors.html