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Semi Trucks: How To Read Air Suspension Load Gauge? (Solved) – FreightViking.com
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- Summary of article content: Articles about Semi Trucks: How To Read Air Suspension Load Gauge? (Solved) – FreightViking.com To read a semi-truck air suspension load gauge, the system’s PSI must be correlated to the weight on the truck. You must ensure that your load gauge is … …
- Most searched keywords: Whether you are looking for Semi Trucks: How To Read Air Suspension Load Gauge? (Solved) – FreightViking.com To read a semi-truck air suspension load gauge, the system’s PSI must be correlated to the weight on the truck. You must ensure that your load gauge is …
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Here’s a short summary on How to Read Air Suspension Load Gauge
What is an Air Suspension Load Gauge
How does the Air Suspension Load Gauge work
How to Read the Air Suspension Load Gauge
Is the Air Suspension Load Gauge Accurate
How to Calibrate the Air Suspension Load Gauge
Viewing a thread – Judging semi weights by suspension pressure
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- Summary of article content: Articles about Viewing a thread – Judging semi weights by suspension pressure I have a weight gauge in the cab for the tractor that shows in pounds and … When we load the front of the trailer we go to 54psi on truck, … …
- Most searched keywords: Whether you are looking for Viewing a thread – Judging semi weights by suspension pressure I have a weight gauge in the cab for the tractor that shows in pounds and … When we load the front of the trailer we go to 54psi on truck, …
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Trailer suspension air pressure gauge. | TruckersReport.com Trucking Forum | #1 CDL Truck Driver Message Board
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- Summary of article content: Articles about Trailer suspension air pressure gauge. | TruckersReport.com Trucking Forum | #1 CDL Truck Driver Message Board I would think if there was a similar gauge reading the pressure in … Get a full load, swing by a cat scale and verify your air gauge and … …
- Most searched keywords: Whether you are looking for Trailer suspension air pressure gauge. | TruckersReport.com Trucking Forum | #1 CDL Truck Driver Message Board I would think if there was a similar gauge reading the pressure in … Get a full load, swing by a cat scale and verify your air gauge and … I’m just wondering if such a thing exists. I have a gauge on my dash for the pressure on the drives so I know that if its 60 or below I’m not…
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how to read suspension load gauge
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- Summary of article content: Articles about how to read suspension load gauge Air pressure required will vary based on the axle, wheels, and tires used. To obtain an accurate air pressure reading for a specific load, the suspension must … …
- Most searched keywords: Whether you are looking for how to read suspension load gauge Air pressure required will vary based on the axle, wheels, and tires used. To obtain an accurate air pressure reading for a specific load, the suspension must …
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Air Weight Gauge – Trucker Forum – Trucking & Driving Forums – Class A Drivers
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- Summary of article content: Articles about Air Weight Gauge – Trucker Forum – Trucking & Driving Forums – Class A Drivers I know on a KW the air suspension gauge if it read 60lbs it was 34K on the drives. Most of the other trucks it is close to the same. 01-22-2007 … …
- Most searched keywords: Whether you are looking for Air Weight Gauge – Trucker Forum – Trucking & Driving Forums – Class A Drivers I know on a KW the air suspension gauge if it read 60lbs it was 34K on the drives. Most of the other trucks it is close to the same. 01-22-2007 … Air,Weight,Gauge, Air Weight Gauge, vbulletin,vBulletin Solutions,forum,bbs,discussion,bulletin boardOwner Operators Forums – Air Weight Gauge – I am thinking about putting a air gauge on my air ride suspension on my tractor and flat bed for measuring the weight. A few questions. Has anyone on here done this? Once you weigh your truck and trailer a couple times and calibrate the gauges will they be accurate to say 500/
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Semi Trucks: How To Read Air Suspension Load Gauge? (Solved) – FreightViking.com
Have you ever wondered how semi-truck drivers can keep track of how heavy their truck is? How do they know how much cargo can be loaded onto their semi-truck?
The majority of drivers use a handy tool called an air suspension load gauge. If you want to find out what it is and how it works, read on!
Here’s a short summary on How to Read Air Suspension Load Gauge:
To read a semi-truck air suspension load gauge, the system’s PSI must be correlated to the weight on the truck. You must ensure that your load gauge is calibrated properly. When reading the load gauge, make sure your truck is on a flat surface, with the parking brakes off and the HCV fully engaged.
What is an Air Suspension Load Gauge?
An air suspension load gauge is a beneficial tool that can be installed on a semi-truck. There are tons of semi-truck drivers out there who use this tool to make their lives easier.
Many modern semi-trucks have them installed as standard. However, they can be installed on older semi-trucks if they are not standard with a specific model.
An air suspension load gauge helps the driver by indicating how much weight is in the trailer. It’s not 100% accurate, especially if the gauge is not calibrated correctly.
However, the air suspension gauge can get a close estimate of how much weight is on the suspension. This will save the driver time from weighing the semi-truck to ensure that it’s within the required weight limits.
It helps the driver manage the load that is put on their semi-truck, and they can check the gauge to see how much more cargo can be loaded on the truck.
How does the Air Suspension Load Gauge work?
The air suspension load gauge has a clever system to determine the cargo’s weight in a semi-truck.
Air suspensions found on semi-trucks have an element known as an airbag. The airbags inflate based on the weight that is out on them. They act like the springs you would find in a standard suspension.
An air suspension load gauge uses sensors to determine the flex or pressure in the airbags. The sensors send out readings to the gauge in the cabin which gives the driver an indication of how much weight is on the suspension.
How to Read the Air Suspension Load Gauge?
Air suspension load gauges do not give out a ‘weight’ reading. This can make it a little bit more complicated to understand what the gauge is telling you entirely.
Instead of indicating the weight on the air suspension, it gives you a reading in PSI. This is because the sensors measure the PSI in the airbags instead of the weight put on them.
Reading the PSI as opposed to the weight makes them more accurate as the weight can be split into different sections of the semi-truck, which will affect the weight reading.
There are a few steps you need to follow if you want to get an accurate reading out of your air suspension load gauge.
Park the semi-truck on a level surface. This will ensure that the weight is evenly distributed across the axles. Shift the semi-truck into neutral and set the parking brakes. Check the wheels to ensure that the semi-truck does not roll or move unexpectedly. Release the parking brake as it can put extra pressure on the suspension’s airbags, influencing your load gauge readings. Make sure that your Height Control Valve (HCV) has fully inflated the airbags. If they are not fully inflated, you will need to dump the air out of them and refill them again. This could take a couple of minutes. Check the load gauge to get an idea of the weight over the axles.
How to correlate the pressure reading to weight?
It’s difficult to accurately correlate the pressure from the airbags to the weight of the load on the semi-truck.
Most drivers state that it entirely depends on the combinations of tractors and trailers that you have and that each one is unique in the readings that it gives.
Some drivers also say that the right height, size of the fifth wheel, and airbags on your air suspension can influence the reading you get from the gauge.
What should the reading be when not loaded?
Many people think that because there is no cargo in their semi-truck that the reading on their air suspension load gauge should be 0.
However, this is not the case. There is still some weight on the airbags in the suspension, which causes them to flex, and in most cases, the gauge will read around 20 PSI.
What should the reading be on each of the axles when loaded?
Most semi-truck drivers say that the air suspension load gauges should read no more than 60 PSI.
In most cases, 60 PSI is the maximum allowed weight of 80,000 lbs. However, this does vary according to your truck and trailer combination.
It’s also important to remember that the gauges are not always 100% accurate, especially if they have not been appropriately calibrated.
It also depends on the calibration of your load gauge. It can be calibrated to show a different figure for the weight that is loaded on the semi-truck.
It isn’t easy to correlate 60 PSI on the gauge with 80,000 lbs in weight. However, these figures have been established through trial and error and experience.
Can it read the weight on combination of axles when loaded?
There are different types of air suspension load gauges. The first can measure the load on one axle of the semi-truck.
The other can measure the pressure on multiple axle groups. For example, the trailer’s axles combined, and the tractor’s axles combined.
Is the Air Suspension Load Gauge Accurate?
The answer is that it depends. In the majority of cases, the gauge needs to be calibrated correctly for it to be accurate.
Even then, there have been cases where the load gauge is not 100% accurate. One driver has reported that they loaded their truck to where they usually do when measuring with the load gauge.
However, when their semi-truck was weighed it was 3 tonnes overweight. This could be down to poor calibration or a faulty load gauge.
How to know if the reading is true?
The only way to know if your load gauge reading is accurate is to load cargo on the semi-truck and weigh it on a scale.
While doing so, it’s also good to find which PSI is shown on the gauge based on the weight put on the semi-truck.
How to Calibrate the Air Suspension Load Gauge?
There is a specific process you need to follow to calibrate your semi-trucks air suspension load gauge properly. If you follow these steps, your gauge should be accurate.
The first step is that you need to load the semi-truck. It would help if you never calibrate the gauge while the truck is empty, affecting the readings. You’ll want to load the semi-truck just under the legal weight limit. Usually, within 1500 lbs is a good weight to aim for. The next step is to find a certified ground scale to measure the weight on the specific axle or axle group that your air suspension load gauge is measuring. When measuring the weight of the semi-truck on the scales you want to prevent any kind of movement as this can shift the weight or the pressure on the air bags. Thus, it is important to put the transmission into neutral and set the parking brakes. You’ll also want to check the wheels to keep the semi-truck as steady as possible. The next step is often overlooked but very important. You need to release your parking brakes as they can put pressure and load on the airbags. The next step is to ensure that your Height Control Valve (HCV) has fully inflated the airbags. If they aren’t fully inflated, you’ll need to dumb the air and refill them, which could take some time. Next, you need to use a flat screwdriver to turn the calibration screw on the load gauge. You must ensure that it matches the certified scale weight.
How often should the air suspension load gauge be calibrated?
In most cases, the calibration will last a long time. However, it can be a good idea to occasionally check it to ensure that you are within the legal weight limits.
The checks can be done every month or so and the actual calibration should be done approximately every 12 months. This will vary with how frequently you use your truck to carry loads.
The last thing you want is to get an inaccurate reading and have to pay a fine for your semi-truck being overweight.
How to Read Kenworth Suspension Load Gauge – Big Rig Pros
As a truck driver, you need to be familiar with your truck and its parts. One of the parts you should be familiar with is the suspension gauge, as it helps scale and weigh the load on the truck. It helps prevent the overloading of the truck, which is why you should know how to read the Kenworth load suspension gauge.
The Kenworth suspension load gauge is easy to read-only after you calibrate it. Once you can calibrate your suspension load gauge, all you need to do is keep an eye on the scale for the readings. The Kenworth suspension load gauge is essential as it helps you manage the load you have on your truck.
How to Calibrate Your Kenworth Suspension Load Gauge
Calibrating your Kenworth suspension load gauge is quite simple. You only need to follow a series of simple steps to calibrate it and start your readings. Here are simple steps and procedures you can follow to calibrate your Kenworth suspension load gauge;
Step 1: The first step to calibrating your suspension load gauge is to load your vehicle. Your vehicle needs to get loaded before you can begin to calibrate, as the load will serve as a means to get a neutral scale. Ensure you do not calibrate your load gauge empty.
The first step to calibrating your suspension load gauge is to load your vehicle. Your vehicle needs to get loaded before you can begin to calibrate, as the load will serve as a means to get a neutral scale. Ensure you do not calibrate your load gauge empty. Step 2: The second step is to get the right load. Get a load of about 500 to 700kg or 1000 to 1500lbs or more to calibrate your load gauge. Place this load on your vehicle to begin your calibration process. Ensure the load does not exceed the legal limit for the axle group.
The second step is to get the right load. Get a load of about 500 to 700kg or 1000 to 1500lbs or more to calibrate your load gauge. Place this load on your vehicle to begin your calibration process. Ensure the load does not exceed the legal limit for the axle group. Step 3: Get a certified in-ground scale and use it to obtain a loaded weight for the axle group attached to the Kenworth suspension load gauge. This will allow you to get an accurate reading of the loaded weight. With this in place, you are halfway in calibrating your Kenworth suspension load gauge.
Get a certified in-ground scale and use it to obtain a loaded weight for the axle group attached to the Kenworth suspension load gauge. This will allow you to get an accurate reading of the loaded weight. With this in place, you are halfway in calibrating your Kenworth suspension load gauge. Step 4: Now, you need to park your vehicle on a level surface. After positioning your truck on a level surface, shift your transmission to neutral and set your vehicle’s parking brakes. After setting the parking brakes, you should check the wheels to prevent unexpected movements.
Further Steps for Calibration
Step 5: After properly choking the wheels of your truck, you should release the service and parking brakes. With everything in place, your vehicle becomes secured to the position. And this allows you to calibrate the Kenworth suspension load gauge successfully.
After properly choking the wheels of your truck, you should release the service and parking brakes. With everything in place, your vehicle becomes secured to the position. And this allows you to calibrate the Kenworth suspension load gauge successfully. Step 6: Ensure the height control valve has completely inflated the airbags. If it hasn’t, you need to make sure this occurs. You might also need to expel the air in the suspension and allow the HCV to refill the system. It might take minutes to complete this process, so you will have to wait it out.
Ensure the height control valve has completely inflated the airbags. If it hasn’t, you need to make sure this occurs. You might also need to expel the air in the suspension and allow the HCV to refill the system. It might take minutes to complete this process, so you will have to wait it out. Step 7: After getting all this done, you should get a flat head screwdriver to calibrate the Kenworth suspension load gauge. Use the screwdriver to manipulate the calibration screw until the dial reads the accurate scale. The readings of the dial need to match that of the certified scale weight. Yes! You are done with calibrating your Kenworth suspension load gauge.
Now that you have successfully calibrated your Kenworth suspension load gauge, you can proceed with your readings. You only need to check the dial readings to know what your loaded weight weighs. Ensure you do not exceed the load weight limit for the axle group for better performance.
What is the Highest Load My Truck Can Carry?
Trucks can carry a wide range of loaded weights depending on the engine’s capacity, functionality, and mechanical power. But regardless of how powerful your vehicle is, there is a legal limit to how much load your truck can carry. Exceeding this limit is illegal and can make you liable to some legal punishments.
A fully loaded truck should weigh about 80,000lbs, which is the maximum legal limit for a truck. An empty truck can weigh about 35000 lbs, which only allows a loaded weight of about 45000lbs for trucks with this weight. Whatever the weight of the truck, the legal gross vehicle weight should be 80000lbs.
If your truck has a single axle, then the legal weight limit is 20000lbs. The weight on the single axle should not exceed this limit, while tandem axles spaced about 40 to 96 inches should not exceed 34000 lbs. With your Kenworth suspension load gauge ready, you can keep track of your vehicle’s weight.
Conclusion
Reading Kenworth suspension load gauge is as simple as reading every other load gauge of your vehicle. You only have to make sure you calibrated it correctly for accurate readings. With proper calibration, you can keep track of your truck weight readings.
Judging semi weights by suspension pressure
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Dave7060
Posted 3/4/2015 07:47 (#4429792)
Subject: Judging semi weights by suspension pressure
So I have to haul wheat Friday with my new to me semi, 01 IH 9900i and 40′ Trailstar end dump with two axles plus a 3rd that’s a lift. I have a weight gauge in the cab for the tractor that shows in pounds and two air gauges hooked into the air suspension on the back two axles plus a gauge on the air bags for the lift axle.
Any one have a rough idea how many PSI the gauges on the trailer should show to be legal, in Canada I’m legal for 55,000kg (121,000lbs). I have heard not to go over 60psi, is that just for that trailer (not mine) or is that a general rule of thumb? Trailer doesn’t have a chart for axle weights vs suspension pressure.
I know I won’t know much for my truck specifically untill I take in the first load on Friday but would like to have a bit of an idea before hand.
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glensts
Posted 3/4/2015 08:00 (#4429827 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
I’m having a hard time figuring if you can go over weight with that trailer. Guessing you are 15000kg empty leaves you room for 1500 bushel.
On the truck tandems and trailer tandems we haul with 74PSI when loaded to give us the 17000kg for the axles. Tridems in the 66lbs.
Ontario you are allowed a little more for tandems I think, 18000?
When we load the front of the trailer we go to 54psi on truck, then move to back of trailer and hope it all quits at 74 each. Now the drop axle I’m of no help for.
jcfarmboy
Posted 3/4/2015 08:03 (#4429834 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
South Western Ontario, Canada South Western Ontario, Canada Are you sure about the 55Mt gross? I would get checked by the MTO before getting loaded.
As for air guage its hit n miss for getting weight correct.
This is the weight sticker for my 5 axle. Axle 1 and 5 are lifts and 2,3 and 4 are my mains.
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E718
Posted 3/4/2015 08:14 (#4429865 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
Sac & Story county IA I have one suspension that is some over 60 psi to be 34,000 on the tandem. And another that is some over 70 psi for 34,000. Loading to 60 psi the first time sounds like a plan. Instead of one of those “$900 deals”.
Dave7060
Posted 3/4/2015 09:05 (#4430011 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
I should maybe add my empty weight is right around 17,000kg.
bowtieighth
Posted 3/4/2015 09:23 (#4430067 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
Bethany, MO Is that picture of your outfit? If that’s corn, were you legal there? What did the gauges say on that load? A load of good wheat will be a little heavier than the same volume of good corn. I’d guess around 2 – 4000# more on a load like that.
redwngr
Posted 3/4/2015 10:01 (#4430171 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
SW Ont Wheat and soys 60 lb/bu, corn 56 lb/bu
At ‘standard’ test weights:
1500bu wheat = 90,000lb
1500bu corn = 84,000lb
MNCORNFARMER
Posted 3/4/2015 10:31 (#4430248 – in reply to #4429792)
Subject: RE: Judging semi weights by suspension pressure
SE MN I’m pulling a 42′ timpte hopper with a 9100 IH daycab empty at around 24,500 depending on fuel. I usually try for 67pounds on my trailer gauge and 64 or 65 on the truck when I’m all done but in order for these gauges to be accurate it takes a lot of trial and error and a consistent loading surface. I would not rely on the gauges if I was loading in a soft field. Also you need to figure it out for your truck. I have a friend that has a trailer with mini air ride and he will usually read up around 90 psi.
Dave7060
Posted 3/4/2015 11:32 (#4430385 – in reply to #4430067)
Subject: RE: Judging semi weights by suspension pressure
bowtieighth – 3/4/2015 10:23 Is that picture of your outfit? If that’s corn, were you legal there? What did the gauges say on that load? A load of good wheat will be a little heavier than the same volume of good corn. I’d guess around 2 – 4000# more on a load like that.
Yes, that’s mine. That was 30% moisture grade 3 corn so it was light. But no, I was under my gross legal weight there. Also has just got the truck so I didn’t have any gauges on the trailer.
Edited by Dave7060 3/4/2015 11:34
bowtieighth
Posted 3/4/2015 12:21 (#4430516 – in reply to #4430385)
Subject: RE: Judging semi weights by suspension pressure
Bethany, MO What was the test weight on that load? How much under were you with it? If that volume weighed X and the wheat weighs Y, that’s what you’d be grossing with wheat. Fill a trailer like that with corn, wheat and beans and you’ll have the highest net weight with wheat and the lightest net weight with beans.
shanty
Posted 3/4/2015 12:33 (#4430552 – in reply to #4430248)
Subject: RE: Judging semi weights by suspension pressure
For you fellow Ontario boys where do I find the rules for lift axels. I have a 4 axel end dump double/double meaning 2 lifts its a 97 without the permit anymore. I pull it with a day cab mostly from feild to farm but this spring I have a lot to deliver to the mill. Never been really worried about whiegh but what can I leagaly haul now with those out dated lifts without steers. Its a 40′ trailer. Thanks
jcfarmboy
Posted 3/4/2015 13:38 (#4430690 – in reply to #4430552)
Subject: RE: Judging semi weights by suspension pressure
South Western Ontario, Canada South Western Ontario, Canada shanty – 3/4/2015 13:33
For you fellow Ontario boys where do I find the rules for lift axels. I have a 4 axel end dump double/double meaning 2 lifts its a 97 without the permit anymore. I pull it with a day cab mostly from feild to farm but this spring I have a lot to deliver to the mill. Never been really worried about whiegh but what can I leagaly haul now with those out dated lifts without steers. Its a 40′ trailer. Thanks
E laws.
Zero weight allowance for out of date axles.
I’m good for 21Mt payload with our 2up,2down. Tight tandem. The trailer hasn’t been out in years due to that. We are going to sell it as its no good without spif axles.
Thud
Posted 3/4/2015 14:21 (#4430765 – in reply to #4430690)
Subject: RE: Judging semi weights by suspension pressure
Essex County, extreme SW Ontario, Have they changed the spiff rules? If not then he’s still allowed 4500kg on each of those lifts. None steerable lifts haven’t been outlawed, still perfectly legal to run you just take a 50% cut on the allowable weight for those axles…
OleWestPrairie
Posted 3/4/2015 14:26 (#4430774 – in reply to #4430765)
Subject: RE: Judging semi weights by suspension pressure
Tri-State Area (WI, MN, IA) Just spend $5K and get one of these systems. LOL
Way cool but $$$
http://loadjudge.com/
jcfarmboy
Posted 3/4/2015 14:44 (#4430802 – in reply to #4430765)
Subject: RE: Judging semi weights by suspension pressure
South Western Ontario, Canada South Western Ontario, Canada Thud – 3/4/2015 15:21
Have they changed the spiff rules? If not then he’s still allowed 4500kg on each of those lifts. None steerable lifts haven’t been outlawed, still perfectly legal to run you just take a 50% cut on the allowable weight for those axles…
Way I was told by multiple officials is once the trailer is over 15 years old the axle is no longer eligible and isn’t scaled against your gross weight.
The half weight is for between new to 15 years of age. Date of manufacturing not date of first service.
This is what and how I have been told the law was. Unless the guys in Putnam and in head office are wrong…..
2510
Posted 3/4/2015 17:56 (#4431180 – in reply to #4430802)
Subject: RE: Judging semi weights by suspension pressure
So you have finished reading the how to read suspension load gauge topic article, if you find this article useful, please share it. Thank you very much. See more: air suspension load gauge kit, semi truck air suspension gauge, air suspension weight to psi, kenworth suspension gauge, peterbilt air suspension gauge, air suspension gauge not working, air suspension psi chart, convert air pressure to weight
