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Expert Answers about Grand Design


  • Could DOT 4LV Brake Fluid be Used in Hydrastar Actuators
  • The DOT 4 LV is a lower viscosity version of the 4 formula. It's never been tested in the Hydrastar actuators like # HBA16 and based on the performance differences people have noted in automotive applications when using one over the other I would not recommend it. It might work to a diminished degree or it might work totally fine depending on your climate but for the price of regular DOT 4 I would stick with DOT 3 or DOT 4.
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  • Best Parts For Electric Over Hydraulic Brakes on 2019 Grand Design Momentum 351M
  • We can definitely put together a complete kit so you can add electric over hydraulic brakes to your 2019 Grand Design Momentum 351M tandem-axle trailer. You'll need to add four parts to your trailer - the brakes, actuator, brake lines, and breakaway kit; the best for that are the following: - (Two of these) DeeMaxx Disc Brakes - 13" Hub/Rotor - 8 on 6-1/2 - Maxx Coat/Stainless # DE88YR - Hydrastar Vented Marine Electric Over Hydraulic Actuator for Disc Brakes - 1,600 psi # HS381-8067 -...
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  • Will Fold Down Steps Fit Inside Door on Grand Design Reflection 303RLS with Bedroom Stairs
  • If you have limited clearance inside the door our best option for fold down steps would be the MORryde Flip Tread RV Steps which require the least amount of clearance inside the trailer while folded up, you need 5-1/2 inches of clearance from inside the door threshold. In order to choose the correct set you need to measure the threshold height and width, the part # MR62UR fits a width of 23-3/4" to 28-1/4" and height of 30" to 37-1/2" and the part # MR42UR fits a width of 23-3/4" - 28-1/4"...
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  • How To Determine Axle Placement On Single Axle Trailer Being Converted To Tandem Axle
  • Not necessarily. You will want to follow the included link to a helpful article that goes over proper placement of tandem axles. In short you will want the front axle in a location that makes the tongue weight 10-15% of the trailer weight. It may take a few tries to get the correct location. Once the axle location is set then you can have a qualified welder fully weld the Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 1-1/2" Front/Rear, 2-1/2" Center # APT3 you were looking...
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  • Recommended RV Entry Step That Can Have Steps Added As Needed
  • I may have a solution for you, but the only step that I'm aware of that can have steps actually added to it is the TorkLift GlowStep Revolution Scissor Steps w/ Landing Gear - 4 Steps - 25-1/2" Base - 375 lbs # TLA8104; you would want to use the Add-A-Step for TorkLift GlowStep Revolution Scissor Steps with 25-7/16" Wide Mounting Base # TLA8101 to add a step to those. The Lippert Alumi-Tread # LC432698 cannot have a step added to them, unfortunately. I do think these are a nice replacement...
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  • What MORryde Steps Will Fit On My 2016 Grand Design Reflection 5th Wheel.
  • To get the four steps you need the MORryde StepAbove Strut Assist Fold-Down Step for 27-3/4" - 28-1/4" RV Door Frame - Quad # MR85RR is the way to go. The legs are adjustable and they have foot pads that move independently to give you stability on uneven surfaces.
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  • How To Measure For Replacement Leaf Springs When Current Springs Are Flat
  • I would be happy to help! When measuring for new leaf springs you need to either take them off of the trailer, or jack up the side of the trailer so that the axle is not carrying any weight. Based on the pictures of the leaf springs on your 2017 Grand Design Momentum 398M with Triple 7000lb axles they do look a bit flat, but when weight is not on them they should get a curve back in them. If you can tell me how long from center of spring eye to center of spring eye the springs are, I...
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  • Will Progressive Dynamics Inteli-Power RV Converter PD9160ALV Get Warm to Touch
  • The Progressive Dynamics Inteli-Power RV Converter and Battery Charger # PD9160ALV has a built in fan as well as large heat sinks on the back of it to dissipate heat so it would get warm to the touch when in use. Yes this will fully charge your batteries even though they are 10 foot away roughly.
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  • Recommended Carrier For a Generator To Fit a 2" Receiver on a 2022 Grand Design Solitude
  • I recommend using a carrier like the TorkLift Lock and Load 24x27 # TLA7752 as it will allow you to secure your generator much better than other carriers. It fits a 2" receiver and is capable of holding up to 500lbs. The tray is 27-3/4" long x 24" wide and the securing strap has a maximum height of 22-3/4" tall. The carrier includes a lock for the generator but I recommend also getting a Receiver Lock # e98881 to secure the carrier in your receiver.
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  • Adding Higher Weight Capacity Spring Bars To My Current Weight Distribution Hitch
  • If you figure your dry weight on your 30 ft Grand Design has a 581 lb tongue weight. It is close to the lowest weight rating of the current bar you have. You only have a 219 lb gap before you are at the max for that bar. If your family is anything like mine bringing 200 lbs of stuff on a camping trip in nothing. I suggest getting the 800-1200 lb bars to be safe. If you are questioning it now you will always think about it if you don't. And most storage basements on travel trailers are...
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  • Recommended Suspension Enhancement for 2017 Grand Design Momentum 376th Toy Hauler
  • I have a solution for your 2017 Grand Design Momentum 376th, but there is a not a SuperSprings or Sumo Springs product designed for this application. The best solution to improve the handling and reduce chucking and porpoising on your trailer is the Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 5,200-lb to 7,000-lb Axle # RM-2460 and Roadmaster Comfort Ride Add-On Kit for Triple Axle Trailers - 5,200-lb to 7,000-lb Axles # RM-2460-50. This heavy duty shock system with...
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  • Could Valterra EZ Coil-N-Store Drinking Water Hose # W01-0022 be Used with Brass Adapters
  • If you had brass quick connect fittings that match what comes with the Valterra EZ Coil-N-Store Drinking Water Hose # W01-0022 this would work great with them. There wouldn't be any issue with the brass fittings used with this at all.
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  • Recommended Trailer Hitch and Cargo Carrier for a Grand Design Momentum Toy Hualer
  • I have some great options for you to help with carrying extra cargo on the rear of your Grand Design Momentum. The best option as you mentioned is with a trailer hitch, the Adjustable Width Trailer Hitch Receiver for RVs part # 13703 is what I recommend as it's our most widely compatible trailer hitch for RV's. It will then allow you to attach all different kinds of accessories from bike racks to cargo carriers like the 24x60 Curt Cargo Carrier for 2" Hitches part # C18152. This cargo carrier...
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  • What to Use to Clean of Trailer Brake Assembly Brake Magnets
  • Brake parts cleaner like what you could find at your local auto parts store would work great to clean off brake magnets like the part # AKBRKR-M12.
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  • Recommended E-Bike Rack for a 5th Wheel Trailer
  • The best option I have to carry two e-bikes on a fifth wheel trailer is with the Hollywood Racks RV Rider Bike Rack for 2 Electric Bikes part # HLY64FR which was designed for this exact purpose, to carry bikes on an RV. The RV Rider has an 80 lb weight capacity so it can be used with e-bikes, it comes with a lock for security, and the upright mast design can easily accommodate bikes with an alternative frame without an adapter.
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  • Dometic RV Roof Cleaner on Thermoplastic Polyolefin (TPO) Roofs
  • Yes the Dometic RV Roof Cleaner - 1 Gallon, # DOM54VR, can be used on Thermoplastic Polyolefin (TPO) roofs. It is usable on most any roof and surface type. It can be used on the rest of RV as well. If you need a good RV brush check out the SM Arnold Bi-Level Vehicle Cleaning Brush with Telescoping Flow-Thru Handle - 8" Cleaning Head, # 38185-985. Please take a look at the attached product review video.
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  • Kit Needed to Convert 3,500 lb Trailer Axles of 2021 Grand Design Imagine to Disc Brake
  • To do a Hydrastar kit on your your 2021 Grand Design Imagine 2500RL with 3,500 lb trailer axles you'd need the part # HBA16-252-82 that includes the actuator, breakaway kit, junction box, and 7-way trailer connector. Then for just the disc brake kits part # K2HR35D and you'd be set. I prefer the Hydrastar actuators as they are more reliable overall and faster reacting.
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  • Parts Needed to Convert to Electric Over Hydraulic Disc Brakes on 2018 Grand Design 5th Wheel
  • To get your electric drum brakes converted over to an electric over hydraulic dis brake set up, the HydraStar Electric Over Hydraulic Actuator Kit for Disc Brakes - 1,600 psi # HBA16-252-82 is a great place to start. This includes all the lines/fittings needed for a single or double axle trailer as well as the actuator and the break away kit as well. To complete the system, you will need the Kodiak Disc Brake Kit - 12" Hub/Rotor - 6 on 5-1/2 - Dacromet - 5,200 lbs to 6,000 lbs # K2HR526D....
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  • Slide Topper that Fits 132.5 inch Slide Out
  • Yes we do have slide toppers that fit if the slide out is 132.5 inches like with the part # LCV000184673 for black or part # LCV000163295 for white.
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  • What Type of Fluid Should be Used in Lippert Hydraulic Leveling System
  • The following automatic transmission fluid (ATF) recommendations for use in Lippert Components, Inc. (LCI) hydraulic systems are based upon hydraulic system operation in various environmental air temperatures. 1. Operation at air temperatures routinely above 0 °C (32 °F)—above freezing—which also covers most initial OEM fills. A. Dexron® III/Mercon® ATF B. Mercon® V ATF C. Dexron® VI ATF D. PetroBlend (Mason City, IA) PHO 0022S (synthetic group 3 base blend) E. Bellman all temp 22 (Bremen,...
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