Lippert Components Polarity Reversing Solenoid by Trombetta for Hydraulic Power Units

Lippert Components Polarity Reversing Solenoid by Trombetta for Hydraulic Power Units

Item # LC118246

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LC118246 - Solenoid Lippert Components Accessories and Parts
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Product Images


  • RV Exterior
  • Slide Out Parts
  • Solenoid
  • Lippert Components
Call 800-298-8924 to order Lippert Components accessories and parts part number LC118246 or order online at etrailer.com. Free expert support on all Lippert Components products. Guaranteed Lowest Price and Fastest Shipping for Lippert Components Polarity Reversing Solenoid by Trombetta for Hydraulic Power Units. Accessories and Parts reviews from real customers.


  • All Info
  • Reviews (12)
  • Q & A (15)
  • Photos
  • Why etrailer?

Lippert Components Accessories and Parts - LC118246


  • The Polarity Reversing Solenoid is primarily used on hydraulic leveling and slide-out units. Reversing Polarity DC Contactors provide a cost-effective and simple solution for reversing polarity of permanent magnet DC motors. Integrating two DC Contactors into a single housing unit, Trombetta has eliminated many costly materials and streamlined final product assembly and wire connection.
  • Solenoid is primarily used on Hydraulic Levelers and Slide-Outs.
  • Comes in silver
  • Cost-effective and simple solution for reversing polarity of permanent magnet DC motors
  • No assembly required
  • 1-Year limited warranty

118246








Customer Reviews

Lippert Components Polarity Reversing Solenoid by Trombetta for Hydraulic Power Units - LC118246

Average Customer Rating:  4.8 out of 5 stars   (12 Customer Reviews)


- LC118246
by:

Had no issues with the product. 450867



- LC118246
by:

We use this product on our rv leveling system. The website for ordering was simple and efficient. Product also arrived days ahead of schedule. It was also nice to receive email updates/ confirmation of our order and it's shipping status. 297729



- LC118246
by:

It was the right part and shipped fast. It worked to solve my slider issue for a 2005 42 foot Wildwood Travel Trailer with 3 slides. Yes 3 Slides. Not 2. So this was the exact replacement part used by Wildwood by Forest River, and saved me a lot of money over replacing the pump. Its the ONLY part of my Wildwood trailer to fail after 10 years of living in it 6 months of each year. Im very impressed and this is the right part. It was a super easy replacement as well. -Nick 603610



- LC118246
by:

The part was exactly what I needed. Arrived on schedule. Price was reasonable. 695522



- LC118246
by:

Got me back up and going and quick shipping before our vacation 567563



- LC118246
by:

It would have been a lot better if the nuts came with the solenoid as the old ones had gotten very hot from being loose and were rusty. If it had been a new setup I would’ve had to buy new nuts. 566132



- LC118246
by:

Product was shipped right away... I received it quickly. The solenoid fit perfectly, and operates flawlessly! Now our leveling system on our motorhome works again! 508386



- LC118246
by:

Amanda was excellent. She exceeded my expectations. She was knowledgeable & courteous. She took my order, then send me an email saying it was in shipping & then provided me the shipping info & I received it as promised. Part fixed the problem. I commend Amanda as an employee and your company for parts purchases. 494916



- LC118246
by:

After getting home from a trip to South Dakota I tried to open the slideouts on my 2007 Cardinal 5TH wheel. I pushed the "out" button but nothing happened. After testing several components I came to the conclussion that the Polarity Reversing Solenoid was bad. I went online to Etrailer, found what I needed and placed the order. Within 5 days the part arrived and I installed it. The slides extended and now I'm able to go on our Fall trip up North. The only problem is the replacement part does not have the bracket that holds the solenoid to the top of the pump motor. The original part has a unremovable bracket. I did find a way to attach the solenoid so all is good. 434286



- LC118246
by:

Great phone service and fast shipping. Who could ask for more! 358764



- LC118246
by:

Went to rv store and they was going to take as long and it was going to cost more. Thanks 357649



- LC118246
by:

Quick shipping, very good communication on product and shipping. 304920


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Ask the Experts about this Lippert Components Accessories and Parts

Do you have a question about this Accessories and Part?


  • Replacement Lippert Polarity Reversing Solenoid For Lippert Slide Out
  • Your part number doesn't match, but based on the other things you mentioned the Lippert Polarity Reversing Solenoid by Trombetta for Hydraulic Power Units # LC118246 is the correct part you need.
    view full answer...

  • Trombetta Slide Out Solenoid Replacement For RV
  • Most likely you have a bad solenoid on your Trombetta Lippert slide out and would just need to replace it with the part # LC118246. It's very common that this style of slide out has solenoid issues and this is the known solution.
    view full answer...

  • Troubleshooting Lippert Slide-Out Only Retracting After Resetting Control
  • I reached out to my contact at Lippert and he said it sounds like there could be a bad motor or harness on your trailer's slide-out. The one green flash you are getting indicates an issue with motor 1. He recommends swapping motor 1 and motor 2 wiring to see if the single green flash remains or if it goes to two green flashes. If it moves to 2 green flashes (motor 2) then the motor or harness is bad and needs to be replaced. We do have replacement slide-out motors available which I...
    view full answer...

  • Troubleshooting Slide-Out that Slides In But Not Out
  • Most likely you are correct that the solenoid on your slide-out has gone bad. Since the slide-out is able to move in one direction, we know that the motor is good along with the mechanical linkage components. The only replacement solenoid we have available is the Lippert # LC118246. This polarity reversing solenoid is primarily used on hydraulic slide-out units.
    view full answer...

  • Troubleshooting Lippert Trailer Slide-Out That Will Slide In But Not Slide Out
  • Since your slide's motor works (although only in one direction) we know it is good. This also tells us that the mechanical linkage components that transfer motor power to the slide-out are working too. So as a most-likely candidate the solenoid is it. My contact at Lippert told me your can test the solenoid by connecting the center post to either of the outer posts on the solenoid. Each post will cause the motor to turn in a different direction. If the motor works in both directions...
    view full answer...

  • Does Wire Run to Top Terminal of Trombetta Solenoid Switch
  • It does look like you are missing a wire connection on your solenoid. I attached a picture that shows a wire lead ran to the same terminal you just have rans with that copper bar. I believe that's the missing connection you need to make.
    view full answer...

  • Replacement Trombetta Polarity Reversing Solenoid for Hydraulic Slide-Out on RV
  • I did some checking and it looks like Polarity Reversing Solenoid by Trombetta # LC118246 is the correct replacement solenoid for your trailer and hydraulic slide-out.
    view full answer...

  • Troubleshooting Solenoid for Slide-Out Cylinder That Does Not Operate
  • You can test the function of the slider's troublesome hydraulic actuator cylinder by swapping the wiring between the two cylinders. If the bad one now works (when connected to the wiring for the other) then you know the issue is not the cylinder, but the wiring. Since you have no hydraulic fluid leaks or other visible issues this does suggest the problem is electrical. Replacing your Trombetta Polarity Reversing Solenoid # LC118246 may be your easiest route.
    view full answer...

  • Does Lippert Polarity Reversing Solenoid for Hydraulic Leveling LC118246 Include Mounting Bracket
  • Lippert Components Polarity Reversing Solenoid by Trombetta for Hydraulic Power Units Item # LC118246 comes as it appears on its product page. Presumably you would already have the bracket this mounts to. Otherwise you would need the entire power unit which has the motor, bracket, and fluid tank in addition to the solenoid which runs around 1,000 bucks! (We do not currently offer that unit.) But if all you need is to swap out a solenoid you should not need any other parts.
    view full answer...

  • Will Replacement Solenoid Fix Weak Hydraulic Slide-Out
  • There is a solenoid like in your photo, and it is possible that Replacement Solenoid # LC118246 will fix your issue. I'm guessing that when opening and closing, doing so one way is causing more problems than the other. If so, what you can do is switch the wiring between the two cylinders to see if the same thing happens, but in reverse, which would indicate the solenoid being the problem and the Replacement Solenoid # LC118246 being what you would need to remedy the problem.
    view full answer...

  • Troubleshooting Slide Out Motor that Moves a Few Inches then Stops for 30 Seconds
  • That sounds like a bad motor to me. Sounds like the motor has weak coils and when gets warm or hot from use they aren't able to carry enough amperage to operate. You'll have to check out your setup to see which slide out motor you'd need. I attached a link to a page that has all of the ones we carry.
    view full answer...

  • Polarity Reversing Solenoid Recommendation for 2008 Peterson Excel Slide Out
  • The Lippert Components Polarity Reversing Solenoid by Trombetta # LC118246 that you referenced is the correct replacement. If you check out the picture I attached you'll see that the numbers you listed match the decal on the side of this. By the way thank you for giving me that info as it really helped make getting you the correct part easy!
    view full answer...

  • Troubleshooting Lack of 12V Power to Slide Out Solenoid
  • If the valve on your solenoid was open then that would explain why nothing was operating properly. The valve being open would mean that the pressure would have been released. Since you closed the valve, as it is supposed to be, that is why everything is working great. I spoke with my contact at Lippert about the above and about you not seeing 12V going to your solenoid. He said that some solenoids will use 6V power instead. If your slide is working properly after you closed the valve...
    view full answer...

  • Need Backup Solenoid For Hydraulic Leveling And Slide-Outs For 2017 Keystone Avalanche 5th Wheel
  • I fully understand wanting a backup unit! Based on your information, I recommend the Lippert Components Polarity Reversing Solenoid by Trombetta for Hydraulic Power, Item # LC118246. This polarity reversing solenoid is a cost effective and simple solution to keep everything working for you on your trips.
    view full answer...

  • Troubleshooting Slide-Out Function Where Solenoid Clicks But Doesn't Move Motor
  • It sounds like the ground isn't the issue because you bypass that with the cables and still have the clicking of the solenoid # LC118246. It sounds like the solenoid has gone bad and needs replacing. You have confirmed the motor works, so I'd start with testing that solenoid. I recommend testing it using a multimeter like # ALL648349 to see if you are getting the proper voltage before and after the pins. That will also help you further determine if the ground connection is an issue.
    view full answer...


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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Written by:
Chelsea B
Edited by:
Chelsea B

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