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Old 12-19-2021, 12:36 PM   #1
cartnoob37
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Default Reverse but no forward 98 txt dcs

I have a 98 txt dcs that will go in reverse but not forward. I do hear the solenoid click when the "gas" pedal is pressed. Sometimes I hear some noise after pressing the pedal that sounds like it's coming from the motor but not evertime.

I read an older post with the same cart and same issue and a user said to "Swap the 2 big cables at 9 and 3 oclock. if the operation is the same but the shift handle is reversed the switch contacts are bad and it must be replaced." Not sure if they mean to swap the cables on the switch or the solenoid?
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Old 12-19-2021, 12:40 PM   #2
kgsc
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Default Re: Reverse but no forward 98 txt dcs

Switching 3 & 9 are for series carts. If you are getting a solenoid click in forward but no movement chances are the controller has let out the magic smoke. If you are hearing a grinding noise you might have a stripped hub.
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Old 12-20-2021, 09:59 AM   #3
cartnoob37
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Default Re: Reverse but no forward 98 txt dcs

Is there a way for me to swap fwd and reverse on the controller to test?

I considered the hub being stripped but it's not really a grinding noise. I would say it sounds more like the motor is not getting enough power. I would think I could check voltage on the motor terminals or the output of the controller?
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Old 12-20-2021, 10:23 AM   #4
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Default Re: Reverse but no forward 98 txt dcs

Swapping F1 and F2 on the controller will make it run in the opposite direction
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Old 12-20-2021, 01:19 PM   #5
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Default Re: Reverse but no forward 98 txt dcs

Quote:
Originally Posted by cartnoob37 View Post
Is there a way for me to swap fwd and reverse on the controller to test?

I considered the hub being stripped but it's not really a grinding noise. I would say it sounds more like the motor is not getting enough power. I would think I could check voltage on the motor terminals or the output of the controller?
A SepEX (Separately Excited) controller like the DCS has two separate outputs to the motor. A high power one for the armature and a low power, bi-polar one for the field windings.

The symptoms are pointing to the low power output in the forward direction is bad, which could make the motor growl.

The DCS was EZGO's first attempt at a SepEx drive and the controller had some design issues. Replace it with an Alltrax XCT48400-DCS user programmable controller.
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Old 12-20-2021, 01:37 PM   #6
cartnoob37
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Default Re: Reverse but no forward 98 txt dcs

Good info. I will do some more troubleshooting and see what I come up with.
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Old 12-20-2021, 06:49 PM   #7
cartnoob37
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Default Re: Reverse but no forward 98 txt dcs

Quote:
Originally Posted by kgsc View Post
Swapping F1 and F2 on the controller will make it run in the opposite direction
If the diagram I am looking at is correct, the white and black wires are F1 & F2?
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Old 12-20-2021, 07:54 PM   #8
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Default Re: Reverse but no forward 98 txt dcs

That looks like it would be F1, F2. See if they go directly to the motor.
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Old 12-21-2021, 01:23 PM   #9
cartnoob37
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Default Re: Reverse but no forward 98 txt dcs

They do go directly to the motor where they are clearly labeled F1 & F2.
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Old 12-21-2021, 01:33 PM   #10
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Default Re: Reverse but no forward 98 txt dcs

Yes swap those wires
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