Great video man, i just finished cdl school not ONE word about this button and what it does. I got assigned my truck and back up to my trailer in a gravel lot and couldn't get out. Then this old timer walked over saw me struggling and showed me this button but I never fully understood until now. My tires kept spinning because of the gravel and all the weight from the trailer. Great video.
Yes you could say that all power (as in hp or kW) goes to the axle with the least traction. Since the other one is not moving. And speed is part of the power equation. But its also important to remember that the same torque, on the other hand, will be sent to ALL axles. Regardless of varying traction. The amount will be limited by what the one with the least traction can take. This goes for open diffs.
I had to watch this video because my trainer was like I just keep mine locked don't worry about it. Thanks pal, very helpful. Not. Glad this video was here.
Good video but one thing you forgot: All older mack tandems with mack rears won’t have an inter axle locker switch, they have “peanuts” in the power divider and they transfer automatically.
Thank you for that easy to understand explanation. The only question I have left is, in snow, is it better to drive with it on? It sounds as though it would help, but I don't want to use it if it won't. I've only been driving 2 months and I'm currently learning during the winter up in Buffalo NY. Thanks for the information and video. God bless
P.S. I've yet to get stuck. Apparently I drive better than 50% of the other drivers here at this Swift location. I've also been out every single time it's snowed this year. But if this will help even more then I'll use it to make the snow driving even better. God bless
Quick question boss what if I was at a complete stop on neutral and I pulled my semi air breaks valve and forgot to disengage the interaxle lock now the interaxle lock won’t come on what do you think broke any info is appreciated thanks
This is a brilliant video. I have always had this question, even though I'm not a trucker 🙂 So essentially, with the interaxle differential lock on, the truck is two wheel drive and without its one wheel drive. However throwing traction control into the equation should help things!
How would you recommend engaging it on a steep grade in motion? We Pull heavy 129k and my boss always says throw in the power divider to get some of the stress off that one axle
Single axle is a differential lock. Left side and right side are locked together. In slippery conditions it's reasonable to leave on( not extended use on highway) but in good traction you might snap an axle or blow up the differential if you're turning.
My truck has problem when I turn differential switch on I hear air does something but only one rear wheel spinning on passenger side. What can be the problem? What's need be checked or replaced?
Nice! These things are not self-evident to everyone even if some might think so. Actually i was suprised that there are trucks on highway without axle diff locks at all.
Ive been driving in the oilfield for 8 years now here in south texas. Used lockers many many times Somebody just told me yesterday that lockers are not meant to be used while turning, only for driving straight… is this true???
I thought that switch made it 4 wheel drive. So are you saying that it's not 4 wheel drive? The reason I'm asking is because I'm here at a Walmart distribution center and it's 2 feet of snow And one of my drivers from the companies telling me that that switch makes it 4 wheel drive. I told him it doesn't and he said all of his trucks he's ever driven was. So could you please answer that question for me?
Not in the same way you might think of a 4x4 pickup... the switch will only engage a power lock between the two axles but not between the wheels of each axle. If one wheel hits ice and starts to spin, the only other wheel that will spin with it is the opposite wheel on the other axle, but only if you have the switch engaged... if it's not engaged(locked), then that tire will spin by itself.
A lot of drivers will tell you that you shouldn't go any faster than 35mph. The issue is that you have the wheels turning and maneuvering at different rotation speeds. And that will cause friction in the gears and also can chew your tires up in bad ways...
I've forgotten to turn mine off before and be in the next town before I notice it's still on....it hasn't damaged anything but it's probably not recommended I would imagine.
All it does is cause poor fuel mileage and just a higher than average wear and tear on the differentials... if you use it sparingly, you can get 2 million miles on an axle. If you over use it you'll just wear them out faster. But gears wear out, that's just life. So, you're driver. It's your decision. Just do not engage during a Spin out... that will be very bad... 👍
My grandpa Told me they had a truck that got plumb in backwards and when the locker was off it was on, They put 600,000 miles on it before they noticed There was no extra wear and tear bs the other trucks
There's no restrictions on when to use the differential lock. OTHER THAN, do not engage during a SPIN OUT.... As long as all four wheels are moving the same speed or fully stopped. You can engage. We'll talk about this more on our next LIVE RADIO SHOW on Sunday Night... Call In 516-387-1733.
I have a single cab 97 f350 7 3 powerstroke and I have had to pull many truckers that got stuck. Mostly rookies that don't know how to turn properly or they over estimate.
Alot of truckers do not get intimate with their equipment anymore to pass along this knowledge thank you so much for this ❤️
I MAKE LOVE TO MINE 😎😍
best explanation been driving for 2 years and never understood until now
Great video man, i just finished cdl school not ONE word about this button and what it does. I got assigned my truck and back up to my trailer in a gravel lot and couldn't get out. Then this old timer walked over saw me struggling and showed me this button but I never fully understood until now. My tires kept spinning because of the gravel and all the weight from the trailer. Great video.
Yes you could say that all power (as in hp or kW) goes to the axle with the least traction. Since the other one is not moving. And speed is part of the power equation.
But its also important to remember that the same torque, on the other hand, will be sent to ALL axles. Regardless of varying traction. The amount will be limited by what the one with the least traction can take.
This goes for open diffs.
Well explained brother.Good job
Wow thanks very much. Had been stuck on uneven ground at a customer for an hour. Be blessed sir 🙏🙏
That was very well explained. Thanks for the info.
I had to watch this video because my trainer was like I just keep mine locked don't worry about it. Thanks pal, very helpful. Not. Glad this video was here.
Very well explained sir thank you for your time to help us out. 💙
Thanks for answering my question I thought my differential locking was not working but you're right one axle was lifted
Subscribed and liked. Becoming a UK trucker
If I saw this vid the day I got stuck on the mud it probably would’ve saved me 350 bucks. Glad I know now.
Thank you brotha 👍
Great explanation
Good video but one thing you forgot: All older mack tandems with mack rears won’t have an inter axle locker switch, they have “peanuts” in the power divider and they transfer automatically.
Thank you for that easy to understand explanation. The only question I have left is, in snow, is it better to drive with it on? It sounds as though it would help, but I don't want to use it if it won't. I've only been driving 2 months and I'm currently learning during the winter up in Buffalo NY. Thanks for the information and video.
God bless
P.S. I've yet to get stuck. Apparently I drive better than 50% of the other drivers here at this Swift location. I've also been out every single time it's snowed this year. But if this will help even more then I'll use it to make the snow driving even better.
God bless
If your slipping in snow. It helps but you can only drive 25mph. With locks on
@@Ramon-lp8fp This truck doesn't have locks. I'm in a 2021 automatic Freightliner. It's just a button. Thanks for the reply.
God bless
Well explained. Thank you sir.
That's the old Holiday Inn on shoreline in Corpus Christi, Tx.
Can a hubseal burst if I engage difflock and swerve the steering moving a bit rightway
Quick question boss what if I was at a complete stop on neutral and I pulled my semi air breaks valve and forgot to disengage the interaxle lock now the interaxle lock won’t come on what do you think broke any info is appreciated thanks
This is a brilliant video. I have always had this question, even though I'm not a trucker 🙂 So essentially, with the interaxle differential lock on, the truck is two wheel drive and without its one wheel drive. However throwing traction control into the equation should help things!
Ypu mean the switch that helps not destroy your axles climbing steep grades constantly. Thats what its used for alot out west.
So what will happen if just keep it locked while driving ?
How fast can you go with the differentials locked?
So there’s two different types of diff locks ?
Inter axle and axle locker are the only way to go. Inter axle lock isn‘t enough
For 99.9% of the time an inter axle lock is enough. It’s got me out from being stuck every time. Knock on wood 🪵
Great video 🤘🏻💯
👍🏾👍🏾👍🏾I learned a lot from the video thanks
Great information
Hey when you said south florida at a paper mill, were you talking about Belle Glade, FL?
Stop throwing your old coffee out at the fuel line.
Was it Palatka FL.
Can i used the lock PDL bottom and enable off road the same time?
How would you recommend engaging it on a steep grade in motion? We Pull heavy 129k and my boss always says throw in the power divider to get some of the stress off that one axle
Not my 07 century class auto. It has some kind of BS traction control button but No locking diff, no airbag dump, no trolley break
Hello do you know how it works on a single axle day cab? My truck has a differential lock switch and a off switch
Single axle is a differential lock. Left side and right side are locked together. In slippery conditions it's reasonable to leave on( not extended use on highway) but in good traction you might snap an axle or blow up the differential if you're turning.
What about the 3 drive axles?
My truck has problem when I turn differential switch on I hear air does something but only one rear wheel spinning on passenger side. What can be the problem? What's need be checked or replaced?
Nice! These things are not self-evident to everyone even if some might think so.
Actually i was suprised that there are trucks on highway without axle diff locks at all.
Ive been driving in the oilfield for 8 years now here in south texas. Used lockers many many times
Somebody just told me yesterday that lockers are not meant to be used while turning, only for driving straight… is this true???
Interaxle is ok for turning, diff lock is not. With enough weight turning with diffs locked will snap axles or blow up the diff
When I jack up my left rear tyres they won’t spin on a Truck Scania series 3??
I thought that switch made it 4 wheel drive. So are you saying that it's not 4 wheel drive? The reason I'm asking is because I'm here at a Walmart distribution center and it's 2 feet of snow And one of my drivers from the companies telling me that that switch makes it 4 wheel drive. I told him it doesn't and he said all of his trucks he's ever driven was. So could you please answer that question for me?
Not in the same way you might think of a 4x4 pickup... the switch will only engage a power lock between the two axles but not between the wheels of each axle. If one wheel hits ice and starts to spin, the only other wheel that will spin with it is the opposite wheel on the other axle, but only if you have the switch engaged... if it's not engaged(locked), then that tire will spin by itself.
@@redneckanize4120 OK....thanks
All my coworkers have told me it makes it "4 wheel drive" too
Hi I have the differential light flashing how do I turn it off
What truck you got? Does it flash all the time or only when you engage it?
Inner axel differential. Can you drive with it on, for long periods of time? & What top speed would you recommend, while using it?
A lot of drivers will tell you that you shouldn't go any faster than 35mph. The issue is that you have the wheels turning and maneuvering at different rotation speeds. And that will cause friction in the gears and also can chew your tires up in bad ways...
I've forgotten to turn mine off before and be in the next town before I notice it's still on....it hasn't damaged anything but it's probably not recommended I would imagine.
All it does is cause poor fuel mileage and just a higher than average wear and tear on the differentials... if you use it sparingly, you can get 2 million miles on an axle. If you over use it you'll just wear them out faster. But gears wear out, that's just life. So, you're driver. It's your decision. Just do not engage during a Spin out... that will be very bad... 👍
My grandpa Told me they had a truck that got plumb in backwards and when the locker was off it was on, They put 600,000 miles on it before they noticed
There was no extra wear and tear bs the other trucks
Can I used on snow roads?
There's no restrictions on when to use the differential lock. OTHER THAN, do not engage during a SPIN OUT.... As long as all four wheels are moving the same speed or fully stopped. You can engage. We'll talk about this more on our next LIVE RADIO SHOW on Sunday Night... Call In 516-387-1733.
What is inter wheel differential
So you're saying older drivers never got stuck when they were a new driver? They were naturals right?
No he’s saying now that they’ve been driving for a long time, most know how not to get stuck
What if you just turn off traction control Wow the diff lock is in place
Can you damage your truck if you forgot to take it off and then hit the highway
No severe damage will happen. However, you'll just wear on the gears more than necessary. So don't freak out. It'll be okay
i rather go up hill vs down hill
Just posted a new video talking a little bit more about the interaxle differential
th-cam.com/video/xKJ1ecyMCTU/w-d-xo.html
I have a single cab 97 f350 7 3 powerstroke and I have had to pull many truckers that got stuck.
Mostly rookies that don't know how to turn properly or they over estimate.
OMG get to the point