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Expert Answers about Grand Design Solitude Fifth Wheel


  • Determining The Correct Entry Door Lock For A 2021 Grand Design Solitude M3550BH
  • Manufacturers do not list the parts they use so to determine the correct replacement for your entry door lock we'll need to know the cutout hole size. To find this you're simply need to remove the back mounting plate of your current lock and that will allow you to see and measure the cutout hole. For example, the Bauer Products Camper Door Lock # BA54FR you referenced requires a cutout hole 2-3/4" wide x 3-3/4" tall and that the door is 1-1/4" to 1-1/2" thick. I've attached a video below...
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  • Correct Bearings and Seals for a 2022 Grand Design Solitude 390RK
  • The correct bearings and seals for a 2022 Grand Design Solitude 390RK are as follows: Inner Bearing: part # 25580 Outer Bearing: part # 02475 Grease Seal: part # GS-2125DL (2.125") Grease Seal: part # GS-2250DL (2.250")
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  • Determining Correct Replacement Axles For 2021 Grand Design Solitude 390RK
  • To know the correct replacement axles for your 2021 Grand Design Solitude 390RK you will need to know the manufacturer and serial number on your current axles, or you will need to measure your current axles from hub face to hub face and from spring seat to spring seat. I included a diagram that shows you how to measure your axles and a link to all of our axles for you to take a look at. Something to keep in mind is that upgrading your axles and suspension will not increase your GVWR, as...
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  • Recommended MORryde Pin Box to Replace a Lippert Rhino Box
  • Thank you so much for the pictures! That is exactly what I need. Your 2023 Solitude 2930RL has what's called a Lippert Rhino pin box. The Rhino Box, like the Lippert 1621 you mentioned, is a specific bolt pattern and to replace it with a MORryde pin box you will want item # MR55QR. The MORryde Cushioned 5th Wheel Pin Box item # MR55QR is rated for 5th wheel trailer's weighing between 18,000 lbs and 21,000 lbs. The Lippert Rhino Box currently on your Grand Design has a 21,000 lbs capacity...
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  • Parts Needed To Connect A Macerator Hose To A Dump Station Waste Drain
  • Thanks for the clarification, yes, the EZ Coupler 4-in-1 Threaded RV Sewer Adapter # F02-3112CL and Valterra Gray Water Drain Adapter # T1020-5VP will be compatible with each other and allow you easily, and cleanly, dump from your macerator to the drain. I went out to the warehouse and grabbed these items to show you them connected together.
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  • How To Determine The Correct Replacement RV Entry Door Lock For Your RV
  • If you're wanting to swap out your RV entry door lock then you'll need to first remove the inside portion of your current lock so that you can get access to the cutout hole. You can then measure the height and width of the hole to pick the correct replacement. The Global Link # GL55VR you were looking at requires a 3-3/4" tall x 2-3/4" wide cutout hole, which is pretty standard sizing for most trailers.
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  • Parts Needed To Use A Portable Macerator On A Black Tank Waste Valve
  • The bayonet part of the Flo-Jet macerator is going to connect to your 3" black tank waste valve as the input and use a 3/4" garden hose connection as the output so you wouldn't need the EZ Coupler 4-in-1 Threaded RV Sewer Adapter # F02-3112CL or the Valterra Gray Water Drain Adapter # T1020-5VP. You would just need your black tank waste valve to have a bayonet fitting for the macerator to attach to like the # T50A has. If you are unsure if your waste valve has a bayonet fitting you can...
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  • Availability of Hitch that Can Fit 2019 Grand Design Solitude Fifth Wheel
  • If you are looking for a custom fit hitch that fits your 5th wheel we do not offer anything but we do have multi fit hitches like the # 13703 that can bolt on if you are willing to drill the frame or can weld on. If there was a custom fit hitch for your RV it would be from the manufacturer.
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  • Compatibility of Roadmaster RM-2470 Comfort Ride Shock Absorbers with Disc Brake Equipped 8K Axle
  • The Roadmaster # RM-2470 Comfort Ride Shock Absorbers for Tandem Axle Trailers aren't an RV specific item, they're designed for 8K axles with a 3-1/2 inch diameter axle tube with leaf spring suspensions. It will be compatible with disc brakes. If your axles meet those parameters, the Roadmaster # RM-2470 will work great for you. The linked video explains how the system works, but we don't have an install video at this time. I have linked to the installation instructions, which I hope...
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  • Will Kodiak Disc Brake 13" Rotor Kit Fit etrailer 7K Easy Grease Idler Hud Assembly
  • Yes, the Kodiak Disc Brake Kit - 13" Rotor - 8 on 6-1/2 - E-Coat - 9/16" Bolts - 7,200-lb Dexter # K2R729DE will fit perfect with the 1-9/16" studs on the Easy Grease Trailer Idler Hub Assembly for 7K Axles - 8 on 6-1/2 # AKIHUB-865-7-1-EZ-K as the length would be measured for the exposed part of the stud. Attached are some installation and review videos for you to check out.
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  • How To Determine the Correct Replacement Trailer Leaf Springs For Your Trailer
  • For new leaf springs for your 2019 Grand Design Solitude 5th Wheel you'll need to know the axle capacity and measure the leaf springs to find the correct replacement. I've attached some diagrams below for both double-eye and slipper spring style leaf springs. I'll need measurement A for both spring types. For example, If you had a 5k axle capacity and a 30" eyelet to eyelet measurement on a double-eye leaf spring then you could use part # UG34FR. If you can get me some more info on what...
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  • Determining Which Reese Goose Box Fits 2021 Grand Design Solitude 380 5th Wheel Camper
  • I would be happy to help you determine the correct Reese Goose Box for your 2021 Grand Design Solitude 380 5th Wheel Camper, but you will need to confirm which model pin box your trailer currently has installed as we do not have a breakdown of the specific components for your trailer. To do this you will need to find the white sticker on your pin box that has four digits such as 1118 or 1621. If you cannot find the sticker then just send me a picture of sticker on your pin box that has...
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  • Wet Bolt Kits For a 2020 Grand Design Solitude 375 5TH Wheel With MORryde Equalizers
  • For your 2020 Grand Design Solitude 375 5th wheel camper you will first need to verify the length of your current shackle straps. These straps are measured from center of bolt hole to center of bolt hole. The MORryde Suspension Upgrade Kit is available in either a 2-1/4" Strap Kit # MR46ZR or a 3-1/8" Strap Kit # MR76ZR. This kit is designed to work with the MORryde Shock Absorbing Suspension Equalizers # MR27ZR which are included on your Solitude. Both kits include the necessary bronze...
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  • Self Adjusting Brakes For a 7,000LB Dexter Axle On a 2020 Grand Design Solitude 375 5TH Wheel Camper
  • Yes, the TruRyde Electric Trailer Brake Kit # TRU96FR will fit the 7,000lb Dexter axles on your 2020 Grand Design Solitude 375. We do also have the Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-464-465 if you prefer to keep the axle components all from one manufacturer.
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  • Will The MORryde Wet Bolt Kit Fit a 2014 Grand Design Solitude 5TH Wheel?
  • You will need to select either the MORryde Suspension Upgrade Kit for 2-1/4" Shackles # MR58ZR or 3-1/8" Shackles # MR98ZR. Both kits will fit with the Correct Track and Equa-Flex suspension upgrades on your 2014 Grand Design Solitude 5th wheel but you will need to verify the length of your shackles to ensure correct fitment. This is important as if you get a different length strap it will change your ride height and may risk your suspension components hitting your frame. The strap lengths...
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  • Is the Furrion A/C part # FR42PV Comptible with my 2016 Solitude 375RE by Grand Design
  • If your 2016 Grand Design Solitude 375RE currently uses the Dometic Brisk A/C unit the # FR42PV will work out perfectly for you and will utilize all of your current wiring, thermostat and ducting in your camper.
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  • Does The Dometic Full-Timer RV Toilet Come With A Gasket And How Does It Flush
  • The Dometic Full-Timer RV Toilet # DOM87FR has multiple holes around the rim of the bowl that will flush down and it comes with a gasket/seal so you won't have to purchase one separately. I've attached an video where David will walk you through the steps of installing your new Dometic Full-Timer RV Toilet.
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  • Which Backup Camera Do I Need With 2020 Grand Design Solitude Fifth Wheel
  • Your 2020 Grand Design Solitude is pre-wired for the Furrion Vision S Backup Camera system with night vision # FOS05TASF that comes with a 5" display screen. You could also use Furrion Vision S Wireless RV Observation Camera System w/ Side Marker Light Cameras # FCE48TASL-05 as well which is the same system, but it comes with blind spot side marker lights with built in cameras.
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  • Does the Valterra EZ Valve Electric Waste Valve Require Routine Maintence?
  • The Valterra EZ Valve Electric Waste Valve for RV Black Water Tank item # E40B-8 may benefit from being installed up in your enclosed underbelly with the Valterra ABS Solvent Cement item # A05-0303 to help prevent the sewer pipes from freezing if you camp when the weather is cold. This will also protect the valve from damage caused by road debris while you are driving. Other than that there are no suggested routine maintenance schedules to follow. You will definitely want to keep the motor...
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  • Troubleshooting Voltage Issues When Installing An Atwood RV Air Conditioner System
  • I've experienced this before when I was installing a roof vent and trying to tie it into the switch for the bedroom I was putting it in. The ground wire ended up being the issue and I had to run the wire out to a different ground and then back to the switch to fix it. It doesn't sound like you have them reversed since it's dropping down to 1.5v so you most likely just have a weak ground that you're connecting to. I recommend running a new wire for your ground to the frame of the trailer...
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