A look at the various types and configurations of motorhome leveling and stabilizing systems available today. Although some folks still do so, the days of lugging around two-by-fours to level a coach at a campsite are becoming a thing of the past. However, not all motorhomers currently have a leveling system on their coach. For those who now want this convenience, there is good news. And you may not want to throw out all the wood just yet. In a hydraulic system, hydraulic fluid is directed through valves.

With an electric system, electric motors and gearing provide the power. On a hydraulic leveling jack system, the pump can be configured in two different ways.

One is to use a centralized pump and valves to service all the jacks; the other features jacks with individual pumps Picket Fence Company valves. For an aftermarket installation, this can be an important Define Registered Company, depending upon the location of each jack and the room available for installation.

A three-point system typically locates one jack up front and two in the rear. Proponents of the three-jack system say that the expense and the added weight of a fourth jack can be saved. Proponents of the four-point system, where a jack is located at each corner of the coach, say that four jacks prevent the chassis and house portion of the coach from undue twisting during Rva Company Escondido Ca leveling process. However, three-point advocates also say that twisting is minimized with a three-jack configuration.

There are three types of mechanical jacks: straight-acting, kick-down, and scissor. Kick-down jacks are hinged but also articulate in and out and are designed to provide drive-off protection.

Scissor jacks, as the name implies, have jaws that open and close extend and retract. Electric jacks are typically straight-acting jacks with power retract.

They include an electric motor for each jack with gearing on the motor shaft and on the piston to extend and retract the jacks. Scissor jacks are also electric and use gears and motors to open and close extend and retract the jaws. There are two different methods for retracting jacks. They can be power-retracted, using the same power source that extends them, or they may be spring-retractable, using springs that are tensioned or stretched when the jack is extended.

Spring-retractable jacks feature either one or two springs per jack. Once tensioned, the spring becomes the motive force for retracting the jack. Straight-acting or kick-down jacks can be either spring- or power-retractable. Scissor jacks are retracted by their electric motors. The discussion surrounding these two different methods for retracting a jack goes something like this. Advocates of power-retractable jacks say that United States Flag Company the jack foot become mired or stuck in a soft surface such as mud, the power retract will pull the foot pad out.

Foot pads are the devices attached to the end of the power pistons that extend when the jack is actuated. The larger the coach, the larger the foot pad should be to support that vehicle.

Foot pads can range in size all the way up to 12 inches by 12 inches, or square inches per pad. Choices can include a manual joystick-type control that the operator moves in the direction the coach needs to be raised or lowered. Typically, a light on the control panel will indicate which corner of the coach is not level. Manual control panels can also feature a touch pad with buttons or switches. There are also fully automatic control panel systems.

The operator simply turns the system on and with the push of a single switch or button, all of the jacks actuate simultaneously.

On this type of system, a computer chip processes input from level sensors and directs the opening and closing of valves on a hydraulic jack system or the actuation of the motors on an electric jack system accordingly. Fully automatic control panels may also allow How To Backup Company Data operator to actuate individual jacks by themselves.

The sensing module s for an automatic air-leveling system detects any deviation from a level condition and responds through Rva Company Escondido Ca control module by opening and closing valves in the compressed air system.

Compressed air is delivered to the appropriate air bag to inflate it, or a bleed-off valve is opened to deflate as required. With some automatic air-leveling systems, a computer chip periodically monitors for a level condition for example, every 30 minutes and inflates or deflates the air bags accordingly.

Safety And Other Issues Never use the leveling system to raise the coach when changing a tire. Never crawl underneath a coach that is supported only by leveling jacks. Avoid jacks when they are being cycled. When using blocks to level a coach, the wheels should also be chocked and the parking brake set to prevent the vehicle from rolling off the leveling blocks. Do not stack blocks unless the directions so indicate.

If cargo carrying capacity is an issue, you will want to take this into account. For hydraulic systems, the typical kinds of maintenance required may be to periodically change the hydraulic fluid. For all types of leveling systems, a thorough visual inspection on a regular basis is a good idea.

Periodically check the mounting bolts on the foot pads. Bigfoot By Quadra Manufacturing Designed and built for type A and C coaches and bus conversions, the Quadra Leveling System is a four-jack hydraulic leveling system that can be configured with each cylinder having its own pump and reservoir for remote mounting capability.

The system can be transferred from one coach to another. Quadra Bigfoot jacks are straight-acting both power extension and retraction. Individual jack lifting capacities can range from 12, pounds up to 17, pounds. The foot pad area is 10 inches by 10 inches per jack to provide square inches of surface area against the ground.

Required maintenance includes periodically checking the mounting bolts on the foot pads. Rva Company Escondido Ca installation is available. Quadra Manufacturing Inc. Both manual and automatic touch-pad control panels are available. A feature called adjustable null gives the operator the ability to set the point in the motorhome where The Honest Company Ontario Ca Rva Company Escondido Ca condition is determined.

This precludes the need to adjust the sensor mounted under the coach. The Auto-Air provides the operator the choice and convenience of leveling the coach using chassis air bags. The air-bag system may be preferable for short stops or when the ground is wet and not capable of providing a surface substantial enough to use the hydraulic jacks. The control panel features touch-pad selections for either hydraulic or air.

The Auto-Air System includes a compressor, a Rva Company Escondido Ca assembly, and valves. Equalizer leveling systems are OEM-installed on larger gas-powered and diesel-powered type A motorhomes. However, the company can install its systems on any size coach, including a system designed specifically for type Cs.

Equalizer Systems, P. BoxC. Each jack is capable of lifting 1, pounds, and each foot pad measures 4 inches by 4. Outrigger jacks are constructed of heavy-duty powder-coated steel and rustproof aluminum. Two jacks come in a pound carton that also includes mounting hardware, switches, and installation and operating instructions.

Four models are available, each incorporating a different frame-to-ground distance 16 inches, 19 inches, 21 inches, and 23 inches. The jacks are guaranteed for one full year against defects in materials and workmanship.

Barker Manufacturing Company, E. Michigan Ave. BoxBattle Creek, MI ;; www. HWH builds a four-point system for the aftermarket that features its Bi-Axis control. All HWH systems feature the Leveleze leveling indicator light system, which shows the corner s of the coach that are low. Jacks that need to be extended are indicated by yellow level lights on the panel, and red warning lights indicate jacks that are extended. A level condition is indicated when all yellow level lights are off and all red warning lights are on.

HWH jack capacities range from 6, to 24, pounds per jack, and both kick-down and straight-acting jacks are available, depending on coach specifications. For use on type A, B, or C motorhomes. Jack cylinder kits come in a 6,pound or 9,pound lifting capacity. Both the knee-acting and straight-acting jacks are offered with two system lift capacities: 42, pounds and 68, pounds. Knee-acting jacks come with either a square-inch or square-inch foot pad. Straight-acting jacks feature square-inch foot pads.

The Level Best is available with a manual, semi-automatic, or fully automatic push-button control panel. The control system can be quickly upgraded without changing jacks, pump, or hoses. For maintenance, Kwikee recommends that even when the coach is not being used, the leveling system needs to be operated on a monthly basis. When adding hydraulic fluid, use the kind indicated in the owners manual.

Kwikee Products Company Inc. Lippert Components Inc. Lippert supplies three-point and four-point leveling systems for type A motorhomes built on Freightliner, Spartan, Ford, and Workhorse chassis and for those constructed on type C Ford chassis.

The hydraulic system features straight-leg-style jacks with foot pad sizes that are 9 or 12 inches in diameter. Maintenance tips include changing hydraulic fluid every two years. The systems currently are OEM-installed only, but Lippert expects to have aftermarket kits available within Rva Company Escondido Ca next 12 months. Power Gear Power Gear features hydraulic straight-leg jack assemblies with lifting capacities that range from 6, pounds to 24, pounds.

These jacks include two-speed control spring returns, with the 12,pound, 16,pound, and 24,pound jacks featuring internal return springs.

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