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Electric Yamaha Electric Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles |
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09-12-2021, 06:29 PM | #1 |
Not Yet Wild
Join Date: Feb 2021
Location: Hunter Valley Australia
Posts: 40
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MZJ-400 Solenoid just stopped YDRE
We were 9 holes into our games - just teed off on the 10th and the cart stopped...
no click so I assumed solenoid. Pushed it off the course, removed the rear cover, visually checked wiring. All looked good. The setup is Admiral motor, Navitas Controller, and MZJ-400 solenoid. I got some tools from home (a short walk) and refitted stock solenoid and got home okay - golf game ruined though... I have a couple of questions that hopefully someone has an answer to. 1. The stock solenoid small terminals have no markings so in the absence of any more info I just connected them. Is there a right / wrong way? 2. The Navitas app was saying that controller was shut down due to under-voltage and to check resistance across terminals (or something similar) - there was no corrosion or anything that may cause higher resistance. Batteries were showing as 49.x volts (they're six years old and I'll replace this year) 3. The stock solenoid performed better than the replacement (it could be my imagination but cart felt faster). Thanks. |
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09-12-2021, 08:34 PM | #2 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,125
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Re: MZJ-400 Solenoid just stopped YDRE
I have had two Chinese copy MZJ-400's fail and I replaced them with the stock one I took out. IMO these solenoids are crap. Yes - they have heavy duty contacts but that's not what fails on solenoids. It's the pull-in switch that failed on both of mine and that killed the coil by overheating it.
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09-12-2021, 09:59 PM | #3 | |
Not Yet Wild
Join Date: Feb 2021
Location: Hunter Valley Australia
Posts: 40
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Re: MZJ-400 Solenoid just stopped YDRE
Quote:
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09-13-2021, 08:16 AM | #4 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,125
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Re: MZJ-400 Solenoid just stopped YDRE
IMO a stock solenoid is just as good - and I think more reliable. Under normal operation, the solenoid does not open or close under load so the contacts last a long time. The failure mode I have seen on the "heavy duty" solenoids is that the plunger that operates the pull-in switch gets flattened on the end and eventually it does not open the switch when the solenoid engages. That keeps the pull-in coil energized and it quickly overheats and frys. I have taken mine apart to see this failure. I am now running my carts on stock solenoids with no issues.
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09-13-2021, 11:43 AM | #5 | |
Gone Wild
Join Date: Sep 2014
Location: Orlando, FL
Posts: 1,308
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Re: MZJ-400 Solenoid just stopped YDRE
Quote:
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1 |
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09-13-2021, 03:46 PM | #6 | |
Not Yet Wild
Join Date: Feb 2021
Location: Hunter Valley Australia
Posts: 40
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Re: MZJ-400 Solenoid just stopped YDRE
Quote:
Sent from my XQ-AU52 using Tapatalk |
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09-13-2021, 04:01 PM | #7 | |
Not Yet Wild
Join Date: Feb 2021
Location: Hunter Valley Australia
Posts: 40
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Re: MZJ-400 Solenoid just stopped YDRE
Quote:
Re my question on wiring, us there a wrong way for small contacts. I can't see why there would be but wanted to check. Sent from my XQ-AU52 using Tapatalk |
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09-13-2021, 04:38 PM | #8 |
Gone Wild
Join Date: May 2012
Location: Rio Verde, Az
Posts: 7,125
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Re: MZJ-400 Solenoid just stopped YDRE
No wrong way for the small contacts - unless there is a diode across them. Then there is a wrong way to bias the diode. The Positive voltage should be to the banded end of the diode. It will last one second at most if you have that wrong.
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09-13-2021, 05:46 PM | #9 |
Not Yet Wild
Join Date: Feb 2021
Location: Hunter Valley Australia
Posts: 40
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Re: MZJ-400 Solenoid just stopped YDRE
Thanks, I thought as much.
Thanks for your help. |
09-26-2021, 07:32 PM | #10 |
Not Yet Wild
Join Date: Feb 2021
Location: Hunter Valley Australia
Posts: 40
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Re: MZJ-400 Solenoid just stopped YDRE
Hi All, I've just received the Curtis Albright solenoid.
I read somewhere that this has a diode built in but it appears not to (I expected to see it across the small terminals) I assume the + / - are the two soldered spade terminals on the right and the ones on the left can be used to connect the diode? Also, what should the diode be 1N5408? I have a load of 1N4007 that are 1A - would connecting three in parallel work? If so, what size resistors would need to be in series to ensure equalisation of the current? (I realise diodes are cheap but getting out in Australia to shop for anything is ridiculous) Thanks. |
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