Got a Dump Truck Job...questions!!! HELP ME

 

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1   05-18-2007, 03:21 AM codered

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Got a Dump Truck Job...questions!!! HELP ME

Hi there, just got hired on to drive quad axle. I am not sure what the quad part is. What do they do?? I drove tandem for a few years, so I never had to worry about them. When do you put them down? Any help is appreciated!!!!
Also, any pointers????

2   05-18-2007, 04:15 AM Rawlco

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Quad axle means that you either have one or two extra non-driving axles that can be raised/lowered. These are generally lowered into a ground contact load bearing position when travelling down a highway fully loaded. Usually you will raise them for any off road maneuvering that you do, and always when empty. You may even need to raise them for some sharp corners. It is best to be honest with your new employer and explain that you need a lesson on how they want you to use the lift axles.

Good luck.

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__________________Nothing is foolproof to a talented fool.--------------------------------------------The Road goes ever on and onDown from the door where it began.Now far ahead the Road has gone,And I must follow, if I can,Pursuing it with eager feet,Until it joins some larger wayWhere many paths and errands meet.And whither then? I cannot say.-- J R R Tolkien

3   05-18-2007, 09:38 AM Mr. Ford95

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Keep a close eye on those 2 additional "pony" axles. They tend to wear the heck out of the tires. Quads are monster's of trucks.

4   05-20-2007, 06:22 PM poorboy126

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Contact us to discuss your requirements of tri axle dump truck capacity tons. Our experienced sales team can help you identify the options that best suit your needs.

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Quad axle dumps usually have a tag axle in front of the two drive axles and one behind the drives. You have to put the rear axle down before you dump or you must dump the air from the drives before dumping if you keep the tag axles raised. Also, don't get caught driving around loaded with the axles up, that will be your ticket. You must raise the axles to go around turns and lower them immediatly after completing the turn. You don't want to wait until you're doing 40 before you lower the axles, the guy buying the tires won't be happy.

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5   05-20-2007, 08:13 PM Kranky

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Re: Got a Dump Truck Job...questions!!! HELP ME

Quote:

Originally Posted by codered

Hi there, just got hired on to drive quad axle. I am not sure what the quad part is. What do they do?? I drove tandem for a few years, so I never had to worry about them. When do you put them down? Any help is appreciated!!!!
Also, any pointers????

In the past, some WI quad axles had one lift axle in front of the drives and one lift axle behind the drives.

Nowadays the vast majority of WI quads are being set up with the two lift axles in front of the drives, also all of the new quads are now being equipped with self steerable lift axles.

In WI the lift axles can each legally carry 10,000 lbs, the front steer axle can carry 20,000 lbs, and the drive tandems can carry 34,000 lbs. for a total of 74,000 lbs., however the maximum legal gross weight for a quad axle in WI is 73,000 lbs.

There are seasonal exceptions to this gross weight limit for hauling certain materials,(with the proper permits) but basically just keep it at 73,000 max.

Lift axles must be down with the proper amount of air pressure applied to them whenever the truck is on the road with a load on.

If your truck has the older non steerable lift axles you must release the air pressure from them when turning a corner, or you will be unable to steer and the truck will try to go straight.The tires on the lift axles will also be severely worn and scuffed if you attempt to corner with the axles down.

You must remember that the lift axles are equipped with brakes, so the trick is to approach the corner, use the brakes to reduce your speed to an acceptable level for the corner, then get off the brakes and lift the axles just before you start to turn.

If you raise the axles while you are using the brakes, as the air pressure is released from the axles the wheels will lock and skid, leaving black skid marks, making squealing noises, and making your boss irate when he sees the flat spots on the lift axle tires.

Also remember to lift the axles when you arrive at your destination, before backing in to dump.

If your truck has self steerable lift axles, those are much easier to use.

When you're truck is loaded and you enter the road, put the axles down and leave them down until you get to your destination, then raise them when leaving the road.

Most self steering lift axles are set up to automatically raise whenever the transmission is shifted into reverse, in case the driver forgets.

(Trying to back up with steerable axles down causes the wheels on the lift axles to max out in one direction or the other, not good for the axles and makes it tough for the truck to move in soft ground, hence the reason for the reverse lift thing)

And as stated previously, make sure the lift axles are down whenever you're on the road with a load on, or else if you're stopped by a cop they will weigh the truck as a tandem, and you will be paying a big fine! (In the thousand dollar range)

The boss will not pay that type of fine, because it is your responsibility to operate the truck properly and be sure the axles are down.

I see you're from WI.In the past, some WI quad axles had one lift axle in front of the drives and one lift axle behind the drives.Nowadays the vast majority of WI quads are being set up with the two lift axles in front of the drives, also all of the new quads are now being equipped with self steerable lift axles.In WI the lift axles can each legally carry 10,000 lbs, the front steer axle can carry 20,000 lbs, and the drive tandems can carry 34,000 lbs. for a total of 74,000 lbs., however the maximum legal gross weight for a quad axle in WI is 73,000 lbs.There are seasonal exceptions to this gross weight limit for hauling certain materials,(with the proper permits) but basically just keep it at 73,000 max.Lift axles must be down with the proper amount of air pressure applied to them whenever the truck is on the road with a load on.If your truck has the older non steerable lift axles you must release the air pressure from them when turning a corner, or you will be unable to steer and the truck will try to go straight.The tires on the lift axles will also be severely worn and scuffed if you attempt to corner with the axles down.You must remember that the lift axles are equipped with brakes, so the trick is to approach the corner, use the brakes to reduce your speed to an acceptable level for the corner, then get off the brakes and lift the axles just before you start to turn.If you raise the axles while you are using the brakes, as the air pressure is released from the axles the wheels will lock and skid, leaving black skid marks, making squealing noises, and making your boss irate when he sees the flat spots on the lift axle tires.Also remember to lift the axles when you arrive at your destination, before backing in to dump.If your truck has self steerable lift axles, those are much easier to use.When you're truck is loaded and you enter the road, put the axles down and leave them down until you get to your destination, then raise them when leaving the road.Most self steering lift axles are set up to automatically raise whenever the transmission is shifted into reverse, in case the driver forgets.(Trying to back up with steerable axles down causes the wheels on the lift axles to max out in one direction or the other, not good for the axles and makes it tough for the truck to move in soft ground, hence the reason for the reverse lift thing)And as stated previously, make sure the lift axles are down whenever you're on the road with a load on, or else if you're stopped by a cop they will weigh the truck as a tandem, and you will be paying a big fine! (In the thousand dollar range)The boss will not pay that type of fine, because it isresponsibility to operate the truck properly and be sure the axles are down.

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Dump trucks are specialized vehicles mainly used for transporting different materials, such as demolition waste, gravel, and sand to and from construction sites to enhance their operations. Although their application seems one-sided, there are actually many different types of dump trucks used for various specific purposes and in varied environments. That is why you should know which type of dump truck you need before contacting dump truck manufacturers.

What are the different types of dump trucks?

The first distinction every individual should make regarding dump trucks is their overall structure, build type, and carrying capacity. Some applications require lighter vehicles capable of swiftly maneuvering across rugged terrain, while others need heavier trucks with enhanced hauling capacity and suitable for extremely rough terrain.

The three main types of standard dump trucks based on these characteristics are:

• Light-duty dump trucks: These truck bodies have a lightweight design and are usually found on single-axle trucks.
• Medium-duty dump trucks: Medium dump bodies are commonly found on single and tandem-axle trucks, which are used for hauling everyday materials to and from job sites.
• Heavy-duty dump trucks: This type of dump body fits an application with two or more rear axles. These trucks are used for longer and heavier hauls for maximum efficiency.

On the other hand, there are also several types of dump trucks that vary in other ways – either in their overall purpose or in additional features or capabilities. Let’s take a look at what other dump trucks are available on the market.

Transfer dump trucks

Transfer dump trucks are essentially standard dump trucks at their core. However, they have a separate cargo container behind them, attached to the main truck body. The main distinction between a standard and a transfer dump truck is the increased capacity from the additional container.

End dump trucks

This is, essentially, not a traditional dump truck, since it is a combination of a tractor and a trailer, where the trailer has a separate hydraulic system. The downside of these dump trucks is their instability which limits its applications to roads and prevents them from operation in rugged jobsite conditions.

Side dump trucks

Another variant of the unconventional dump truck is the side dump truck that consists of a tractor that pulls a semi-trailer. The hydraulic system is used for tilting the body onto one side, so the material is unloaded either on the right or left side, rather than the back. The main benefits of side dump trucks is the faster unloading.

Tri-axle dump trucks

Tri-axle dump trucks are perfect for long distances and heavier loads, however, they are still applicable for everyday hauls around the job site. They are extremely popular in situations where a higher capacity of bed space is required.

Superdump trucks

Superdump trucks have a separate load-bearing and trailing axle. This allows superdump trucks to carry extremely heavy loads while meeting all the stringent federal standards concerning bridge formulas. They can carry up to 80,000 pounds, depending on their axle configuration and length.

Bottom dump trucks

These trucks feature a clamshell gate mechanism that unloads materials from the bottom of the trailer. This design ensures maximum precision when unloading, and they are primarily used for paving and stockpiling.

What is the most reputable company among dump truck manufacturers?

Being familiar with the different types of dump trucks will greatly help you choose the best dump truck for your business based on its key features and capabilities. This will ensure that the dump truck you purchase is adequate for all the requirements of your industry. Once you determine the type of truck and its features you need, it’s time to choose the right dump truck manufacturer to buy your truck from. This is crucial for ensuring quality and reliability.

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