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How to set pusher axle pressure. The pressure that worked for me was 28psi.

  • How to set pusher axle pressure. Hendrickson offers a kit for $850so I bought the correct bags in the kit, and made my own brackets. Oct 1, 2011 · I fabbed up a kit to raise the front axle on my spread reefer. It’s a delicate balance! Sep 18, 2024 · Just like tag axles, pusher axles can be either fixed or liftable. from an existing axle center. This is the axle spacing (Fig. Select a Page Home Vehicles and Equipment Military Trucks and Vehicles OPTION 4: Kit will be installed on a non-steer suspension in which the driver wants the lift axle to be down when ignition is off. 75 inches, (Y measurement of 2. Dec 6, 2021 · Most commonly found in vocational applications like dump trucks, refuse trucks and mixers, pusher axles are in the same family as tag axles when it comes to Pusher 0 psi Park Brake Mode LSTAdepressurized Truck must be on level ground before entering Scale Mode Park Brake Mode 13. It "pushes" weight toward the rear, helping distribute the truck's load more evenly. When you release the parking brake the axle will raise. That way the default setting in case of an electrical failure is "axle up". Then don't mess with it. Thanks for watching! Please Like, Subscribe and follow!https://www. 5 L579 I Alignment Procedures Figure 2: 1 inch drive E20 TORX® socket with sleeve (A-25119) For QUIK-ALIGN® style pivot connections in high volume trailer production and service facilities, Hendrickson OPTIONAL GAUGES OPTIONAL GAUGES Axle, Pusher Air Pressure Axle, Tag Air Pressure Introduction Listed here are gauges that may or may not be on your dashboard or The Tag Axle Air Pressure gauge the center instrument cluster. The steel mounting plate is powder coated for corrosion resistance. Dual Pressure Applications - Lift Axle Control: All 5 ported valves offered by Velvac Inc, and shown in this document are capable of being used as dual pressure valves for lift axle control applications. If pressure is bleeding off, regulator, drop axle lift/drop valving, hose leaks, hole in air bag. Jul 19, 2018 · What about the tag axle? I assume a guy needs to adjust that one while you're loaded and sitting with only the tag axle on a set of scales? When I set the tag axle down currently the air gauge for the tag goes up to 95 PSI and the gauge for the two tandem axles drops to maybe 35 PSI. Add a semi-trailer, full turntable or center-axle drawbar trailer. 3. e. Second would be the tag axle bushings and last but not least, the tires on the tag axle. Apr 20, 2010 · Lift axle suspensions use air bags to carry weight, and either air bags or steel springs to raise the axle when it's not needed. My question is, how much pressure should it take to raise the axle? I plumbed in a dump truck tailgate control valve to dump the air, and raise the axle at the same time. Oct 4, 2024 · Understanding Pusher and Tag Axles. This is all assuming that the pressure is set correctly and the alignment is good. Load Guide The following tables describe the proper air pressure settings and run heights for each SL series model number. Problem is, when loaded heavy enough to use the pusher I run my fifth wheel up in front of my drive axles, but it doesn’t seem like my pusher is barely even touching the ground. A lot of RVers use the placard pressure for the life of their coach and never have a problem. Pusher Axle Pressure Gauge Q43-1136-104K - Big Rig World carries Genuine OEM and Aftermarket parts to repair your vehicle at the lowest prices. A lighter front axle may sound good, but on snow/ice/water and just all around I like my current distribution. 4 Scale Mode Scale mode is used to weigh/scale the truck and adjust the LSTA pressure setting when the truck is parked. the rear drive axle lifts off of the ground and the front drive axle tips forward and then also leaves the ground, thereby allowing the driveline to reach its maximum travel. Lift Axle 101: Tag Axles and Pusher Axles. Each unit comes pre-plumbed and assembled and includes fittings/DOT tubing and a mounting plate. Jul 12, 2004 · SleepyDog, a Liftable Tag Axle (they lift with air-pressure) kiss about $6,000. Adjusting the lift Axle Control Valve settings may prevent proper lift axle operation and render the vehicle non-compliant. The system increases the Load Span® Tag Axle pressure to the system’s set value and allows the Lift Axle Air Valves. Here’s a comparison table highlighting the key differences between tag axles vs. Page 176 DRIVING - Axle and Suspension • Maximum tire static loaded radius Setting the To obtain the desired axle load (SLR) per axle manufacturers Pressure-to- distribution, you must correlate the CAUTION Load Ratio suspension air gauge pressure to the specifications actual axle load by scaling the axle weight(s) and adjusting the pressure Buyers Products Lift Axle Control Assembly with Push-Pull Air Valve provides in-cab controls for air suspension and lift axle. Apr 18, 2023 · Here’s what you should know about tag axles, pusher axles, and the legendary feud we definitely didn’t just make up. Lift axles are non-powered and are almost always installed either ahead of or behind the driving tandem axles on a tractor or straight truck. the valves. Apr 30, 2017 · Then I can air up the rest of my suspension and all seems to look proper. This is a safe pressure to carry until you can get an accurate four corner weight of the motorhome loaded in the way you will be traveling. Compare the load of A to the one of C: If you want to increase your carrying capacity but don’t need a longer body, a pusher axle can help. 2 ITEM PART DESCRIPTION 1 VALVE-SOLENOID, ASSEMBLY 2 VALVE-PRESSURE PROTECTION 3 VALVE-QUICK RELEASE 4 REGULATOR-AIR PRESSURE 5 GAUGE-AIR PRESSURE Lift Axle Type: Non-steer Truck Fixed-Axle Truck Capacity: Up to 22K (TOUGHLIFT) Fixed-Axle Truck Options: 20k Capacity; Pusher axle (in front of drives) Ride Height: 9" TO 11" Fixed Axle Type: 71. FIG. instagra if lift axle is operated by an automatic or semi-automatic lift axle control system, such system may cause lift axle to automatically raise or lower under different conditions . You need to load up to legal weight then put your steer axle on a scale and adjust the lift axle pressure until you get what you need, then check with the steer and lift axle on the scale and make sure it is at least 22,000. Jul 23, 2020 · When would you use a pusher axle? Pusher Axle Pusher axles increase load-carrying capacity where a longer body is not required. The pressure that worked for me was 28psi. Aug 4, 2010 · Switch off = release pressure on the down bags, put pressure on the up bags. Jun 7, 2024 · A dual axle travel trailer features two sets of wheels, which means there are four points of contact with the ground. The axle and brackets to be welded should be stored overnight in a heated room and be at a temperature of at least 60ºF prior to welding. Figure1 Steer axle with clamp bracket and round anchor stud Figure3 Steer axle with Nov 3, 2017 · Set the tires on each axle as show on the data plate. paypal. Jan 11, 2021 · Dana’s Mastroianni adds spec’ing a pusher or liftable axle can include a potential for increased performance by the other axles, resulting in less wear and tear on the vehicle’s tires and ancillary components. Before you can pick a side in the tag axle vs pusher axle debate, you’ll probably want definitions of these two lift axle varieties. Exit vehicle, go to and open air control enclosure. Understanding the benefits of tag and pusher axles when optimizing truck performance for varying loads is crucial. They lift right from the drivers seat and you can adjust how much pressure you want to put onto the ground - from about 20 psi all the way up to 120 psi plus. Proper air bag pressure, and proper spring rating is critical in lift axle operation. Lift axle valves operate to drop or raise the second or third rear axle on dump trucks, cement trucks, some flatbed trailers, and other heavy load situations. SL2065 Series Pressure Chart Table 6 Indicates target Ride Height for this tabulation Page 15: Parts List Dec 16, 2021 · Pusher axles on an on-highway vehicle… well, pusher use has been considered limited because tractor-trailers typically won’t be overloading the other axles. In michigan when you make a tri-axle, you lose the 34,000 and go to 13,000 per axle, for a total of 39,000. Do NOT attempt to guess at a lower pressure just because you or somebody else thinks they know a better number. The decision to spec either configuration is generally based on load balancing of the vehicle. The push / pull knob controls the state of the lift axle, either deployed or retracted . 2. BUT, it will shift that weight to the drive axle. if lift axle is operated by an automatic or semi-automatic lift axle control system, such system may cause lift axle to automatically raise or lower under different conditions . The regulator controls the pressure in the lift axle ride bags . If you’re experiencing a harsh ride, it can be the result of either too much pressure or not enough pressure. Tip of the Thumb of Michigan. A common usage of pusher axles is the addition of 2 axles in front of the tandem bogie of a dump truck. However, some designs incorporate spring based systems. Select from unlimited body & equipment options, including Box, Curtain Side, Fold Down Sides, Flat Deck, Forestry, Livestock Carrier, Dump, Roll Off, Beavertail, Tanker, Garbage Truck, Hooklift, Crane, Truck-mounted Forklift, Fridge, Lift Gate, Toolbox The pusher axle increases the load capacity of the truck. Aug 9, 2021 · (There is also a gauge on the dash showing pressure of the pusher air bags. These axles are commonly used in front of the tandem bogie of a dump truck. Tires suffer from the Goldilocks syndrome. The adjustment to Ps1 is made by using the ILAS Wrench (904053001). Trucking and Construction. aged together with a pressure regulator, dial indicator gauge, and push / pull knob . Jan 8, 2024 · Once you have your tires set at the correct PSI for your RV, you need a Tire Pressure Monitoring System to ensure your tires stay at a safe operating PSI and temperature. Was running it loaded today for the first time and every time I hit the brakes the tag axle started bouncing and shaking real bad, literally feels like it’s bouncing like a basketball back there. When to Use a Pusher Axle or a Tag Axle. 70 psi should get you close. It doesn't disappear, you just move it around. The additional axle provides several benefits, and understanding these can greatly impact your travel experience. Add liftable pusher and tag axles. The Tag goes in front of the drives, the pusher goes in back of the drives like Dave said, which on Choose a vehicle with up to 6 axles. B – A = C. Using the regulator, adjust air pressure on the gauge to appropriate air pressure for vehicle load conditions. Jan 30, 2023 · The unbreakable rule of thumb mentioned above gives you the recommended tire pressure and it is on each sidewall of each tire you buy. • Dual Pressure Function: air is supplied to ports #3 and port #5 and port #1 becomes a common exhaust port. 6. I haven't reset it since then. A lift axle, commonly called a pusher or tag axle, is an axle designed for heavy-duty trucks, allowing them to haul load sizes heavier than the standard axles on their vehicle and trailer could usually take. Jun 2, 2014 · Adjusting the air pressure up or down will change the ride quality of your vehicle, but determining which way to adjust is sometimes the question. If you graph the Michelin air pressure vs loading numbers, that loading puts the recommended pressure in the 60+ psi range. Aug 23, 2020 · Pusher Axle Pusher axles increase load-carrying capacity where a longer body is not required. lift axle activation and movement may vary depending on the brand, configuration, and Oshkosh Equipment - Pusher Axle Air Pressure Regulator (4820-01-092-9221) 1-920-231-1188. requires that a truck with DUAL DRIVE AXLES be lifted by its rear drive axle until the suspension "bottoms out", i. So I guess it's set once, eyeball it every now and again and have fun. This requirement must be complied with and therefore cannot be set at a higher setting. If controls are outside mounted, ensure vehicle is stopped and parking brake is set. In this situation, 100 pounds of foot pressure yields 350 pounds of pressure to the master cylinder. Additionally, he says, the vehicle should experience improved stopping distance due to the added brakes on the pusher axle. Move the control valve lever to the down position. me/SergeiDratchev Mar 25, 2023 · You do not need to set your pressure to the tire pressure stated on the certification label unless your actual weight is close to the maximum weight on the certification label. For indicates the amount of air pressure in vehicles with a telematic navigation the tag axle suspension air bags. Never weld when the axle is cold. AIRman has all of the lift axle air valves you need for your trucks and trailers – 22 different designs replacing 83 competitor models. are correct, and that the axle fits tight into the axle seat, and that the U-bolts are torqued to the required specification. How much weight can a Pusher Axle Carry? The weight a pusher axle can carry at any one time is 20,000 pounds. A reference point is needed to locate the liftable suspension on the vehicle frame rails. Againas Monaco suggested in the old dayskeep it within specs and comfort. There is very little to be gained and much to lose if the guess is wrong, so go with what the engineers pre-determined. So let’s dive in! The NTEA describes a tag Jun 12, 2010 · The truck was specced with only a service brake on the lift axle, i added a 24/30 chamber so i have parking brakes. The kits are differentiated by May 1, 2008 · That way you don't slide the rubber off. The Ps1 pressure setting lowers the axle(s) to the ground and is found on both the Automatic (90555288) and Manual (90555293) Valves under the yellow cap. lift axle activation and movement may vary depending on the brand, configuration, and operating condition of the lift axle control system and / or other factors . Move the pickup point up 1. Most lift axle suspensions use airbags to carry weight. This differs from single axle trailers that only have one set of wheels. The air pressure I ran was between 30 and 60 lbs. Searched high and low for an adjustment, can’t find anything. How much weight can a pusher axle carry? Usually both vehicles have one or two pusher axles; gross weights can Jan 13, 2022 · What pressure is regulator set at and is it keeping a constant pressure. Before diving into when to use each type, let's clarify what these axles are and their primary functions. Calculate the lift axle load (load C) by subtracting A from B. The Ps2 pressure setting is used for returning the axle to the up position and is only found on the Automatic for the factory manual linkage, it is about half of what it needs to be for a hydraulic set up. com 2. Bring the front axle alone on a scale and note the indicated load (load A). The way I see it, as long as DOT sees your tag axle down, that's good enough. Both over-inflating and under-inflating your tires are not the right move to make. The dial indicator reports the pressure the regulator is set to . 4. ONLY THEN CAN AN ACCURATE MEASUREMENT BE COMPLETED. Oct 17, 2017 · I set mine about 3 years ago to take excess weight off the front axle. ‘prescribed transition mass’ for dual tyre axles going from two to three axles is 13 tonnes. The tire pressure has to be just right or you are going to have problems with the tire. If your weight is lower than the maximum weight and you inflated tires to the dataplate pressure, your tires may be overinflated, and your ride may be stiff and In short, a lift axle is an extra axle placed on the vehicle to disperse the vehicle’s total weight over a broader area. Less pressure will lower front axle loading. Dec 2, 2021 · Whereas a tag axle is located behind the drive axles to take some of the weight off the rear drive axles when the vehicle is fully loaded, a pusher axle is positioned in front of the drive axles, adding stability to the chassis during cornering. NOTICE: Diagrams used in this Sep 20, 2018 · The pressure listed on the placard is the pressure needed if you have the coach loaded to the maximum axle ratings. SL20K Self-Steering Axle and Suspension System Installation Manual 6. If you push switch down, axle will then lower. If two sets of air bags are used, one set is inflated while the Oct 17, 2017 · I set mine about 3 years ago to take excess weight off the front axle. Add the lift axle on the scale and note the cumulative load of both axles (load B). While a tag or lift axle is behind the vehicle, a pusher axle is in front. . I think our air bag pressures are usually around 35 psi, but vary widely depending on the system. : A pusher axle is a liftable axle installed in front of the drive axle(s). Refer to pages 4 and 5 for detailed installation procedures. Drop axle pressure adjustment on a Kenworth Dump Truck. How does a lift axle valve work? All lift axle control valves have a manual function that overrides LACV operation and drops the axle permanently. However, in recent years, over-the-road applications like linehaul and regional haul have begun experimenting with 6×2 configurations, adding tag and pusher axles in the quest for lift axle rapid movement can cause severe personal injury or death . If it's raining and you don't lift, you may slide straight through the turn. pusher axles: Mastering Truck Load Management: Tag Axles vs. We have used the TST Tire Pressure Monitoring System in all of our RVs over the past 9 years and know it to be the best TPMS on the market. The distance from the existing axle cen-ter to the suspension is the frame reference point dimension (Fig. 1). 3. I ALWAYS lift around turns. See full list on truckscience. What is a Pusher Axle? A pusher axle is a non-driven axle located in front of the truck’s rear drive axle(s). lift axle rapid movement can cause severe personal injury or death . 00 Good Bye. I cant figure out how to get the axle to stay down. Aug 24, 2023 · The addition of Pusher and Tag axles increases the load-carrying capacity of a truck, while remaining within axle limits for Bridge. 5. Regulator & gauge on the down pressure port of the solenoid valve to adjust axle weight, full system pressure to up bags to prevent axle bounce when raised. ) When ever you apply the parking brake, the axle will drop and the air bag pressure will rise to the amount set on the control tower gauge by the regulator. Apr 22, 2015 · a lift axle that has 4 tires should have the air pressure set so that it carriers the same weight as each drive axle,,when on a job site or place where a very tight turn is required the air on the lift should be dumped , remember when you dump the air on a lift all the weight will then be shifted to the drive axles and the steer,, for safety air pressure should be equalized so that the braking May 23, 2011 · Posted 5/23/2011 07:53 (#1787427 - in reply to #1787319) Subject: Re: Air Down Pusher axle. I preset regulators on the bench using a high quality accurate gauge, because you can't trust the gauges in the truck, those are of cheap quality and known to be inaccurate. I've weighed the coach a couple times and the front weight is within specs. Sep 14, 2017 · We have a couple of hundred pounds over 4,000 on each of the drive axle tires and a little under 4,000 pounds on both tag tires. This webinar will cover t Support this channel -- https://www. Drive Axle Figures 4-6 show typical brackets for automatic brake adjuster applications on drive axle brake assemblies. It takes pressure off of your steers. But the published minimum air pressure on the tires is 80 psi. Let’s discuss the similarities and differences May 29, 2020 · Anything below 48,000 leave it up, above that weight put it down. Pusher Axles. Pusher Axle Pressure Gauge Q43-1136-104K - OEM - Kenworth - Big Rig World axle brake assemblies. Air Pressure vs. Thats about what you mention so I would start there. if lift axle is operated by an automatic or semi-automatic lift axle control system, such system may cause lift axle to automatically raise or lower under different conditions. 5” Track; 5” round tube, 6” drop center Wheel End Equipment: 10 hole hub-piloted H/D assy for dual tire Slacks: 6" Bendix auto slack (Standard) Customer: Hey pal I just bought a 2013 Mack granite quad axle dump truck, 1 regular pusher and the other lifter is a tag, brand new tires on the tag. As soon as i pull the brake it turns the green light out on the switch itself, and the axle lifts regardless of switch position. Jul 21, 2009 · As said in earlier post, the tag axle stabilizers would be my first thought. 25”), and that same 100 pounds of foot pressure yields 600 pounds at the master cylinder. It is positioned in front of the drive axles and provides added support to the chassis while the vehicle is turning. cqxs tsao rvvlx klmjlpt jppufi ehpastoo xpabx rxxcmuic pczk xfa