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Old 07-23-2020, 05:21 PM   #1
ntgtech
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Join Date: Jul 2020
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Default 2008 Ruff and Tuff Hunter - Runs half speed

Hello all. I’m assisting my neighbor in troubleshooting his 2008 R&T Hunter and we need a little help. The specific issue is the cart will only run at half speed going forward and it has little to no torque in reverse. This issue is consistent and doesn’t change if driven for 1 minute or 10. The following items have been changed, tested, and/or verified by a golf cart repair shop:

- All batteries changed with known good set - no change
- Speed solenoid changed - no change
- Motor has been pulled, brushes checked and tested - no short in motor
- Checked all shafts, bearings, brakes, etc. and nothing is creating drag
- Verified all wire connections clean and tight

The controller is a CTL7500D 48 Volt 650A and this cart does not have a 1/2 speed switch in the glove compartment.

Short of removing and replacing parts through process of elimination, we would like to isolate and test each electrical component if possible. Any advice on where we can find a diagnostic reference chart or electrical component specifications would be greatly appreciated. Thank you!
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Old 07-26-2020, 07:45 PM   #2
ntgtech
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Default Re: 2008 Ruff and Tuff Hunter - Runs half speed

With ignition switch on (while charging batteries), there is a red LED on the controller blinking (two blinks, then one blink… long pause then same repeating pattern) possibly code 21? Trying to locate a diagnostic trouble code legend for the CTL 7500 controller if anyone has experienced same. Thank you.
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Old 07-27-2020, 02:24 PM   #3
ntgtech
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Default Re: 2008 Ruff and Tuff Hunter - Runs half speed

Issue has been resolved. Thank you.
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Old 07-28-2020, 12:33 AM   #4
Cartmaster
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Default Re: 2008 Ruff and Tuff Hunter - Runs half speed

I am sorry You did not get any response to your question, But could you explain what your solution was please. It may help others with a similar issue.
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Old 12-09-2021, 11:15 AM   #5
Bikerjim
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Default Re: 2008 Ruff and Tuff Hunter - Runs half speed

Looking for a 2008 R&T for parts buggy or willing to sell one! Any one got something?
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