thanks for helpful vid. hey, just to clarify for future viewers, 1 full turn is 360 degrees; 1/2 turn is 180; 1/4 turn is 90. So after tightening the adjuster, we back it off 1/4 turn.
1. Chock the wheels 2. Disable parking brake otherwise you will not be able to pull hard on them to check if they need adjustment 3. Use Gloves and then continue with all instructions given by the expert on this channel.
Brakes released before adjustment and it’s important to be sure the slack adjuster is greased and operating freely , and I’d go over brake chambers I seen a guy pull the death bolt once and if I’d not caught him he’d be hurt bad I like you content good mechanic sir you are
Bradford Ramm, no that is not correct. This is not a Meritor, where you have to pull the tab out. This just clicks while adjusting it (sounds bad, but it isn't) Also, you generally want a half turn. Get your tires off the ground and do your adjustment, than spin them. You'll see
Look up what a clean slack adjuster looks like and you will see the turning nut and what it looks like then compare with your truck. Most trucks have em unless urs is super old.
My trailer when I hit the brakes hard, rear axle jumps but when I slowly brake and not hit my brakes hard, it doesn't like to dance. Do you know what is the cause of this? I am putting new shocks because they are all bad and new brake chambers.
@@JLewis-vv5zf you need to block the tires because you release the parking brake the vehicle can roll while adjusting the rear slack adjusters also look closely at the drum and the shoes are worn deep in the drum you can tell by the metal lip it made on the drum
@@apolinarponce4506 It’s douchebags like you that keep people from wanting to post helpful videos like this. The man is simply demonstrating how to adjust the slack adjuster, nowhere in this video does he have to mention anything about the damn drums being worn beyond tolerance and I’m pretty darn sure that there is a tractor hooked up to the trailer in order to release the brakes so as long as the tractor parking brake is set, shove the wheel CHOCKS (not blocks) up your A$$. This was a perfect tutorial
I've got an issue right now with the front set of tandems on the trailer locking down whenever I'm coming to a stop so I think they are too tight, all I need to do is turn it about a quarter of a turn counterclockwise?
That is a Great Video On How To Adjust Your Brakes But The Older Ones are 9/16 and you Have to Push the Lock Collar in so you can turn the bolt ! Good Video ! it Should Be On all The CDL Test So Every One Knows How to adjust there Brakes Just Sayin
Not everybody that drives a truck is mechanically inclined! I think if something like that was to happen, we would see more and more trucks in a ditch or flipped over somewhere.? JMO.
Unless you have replaced the shoes you never ever adjust automatic slack adjusters... If your throw is out past 2 inches for short stroke and 3 inch for long stroke the slack is bad and needs to be replaced...
Been driving and maintaining trucks for over 17 years, have yet to see an automatic slack adjuster that actually adjusts correctly for more than 6 months if that
@@marceloevera2009 need to keep them greased... they dont last long in the Northeast... they will get you close, but you still need to Manually adjust them to get it done correctly
true enough but 1/4 turn is right... been doing it 30 years, depending on slop in the system, 1/2 turn will give you too much pushrod travel and that's what the DOT measures during an inspection...
You need to also state a good brake system will never have to be touched after rebuilding a brake system.Also everytime you manually adjust the slack adjuster you are wearing the lock out.That is why A BRAKE THROW CHECK SHOULD BE THE ONLY CHECK DONE, THEN THE SLACK ADJUSTER SHOULD BE DONE IF THE THROW IS OUT OF SPEC.Lastly IF ANYTHING IS OUT the slack adjuster, s cam and chamber should be inspected for wear or damage.
@@Bendigo1 You can replace the manual slack adjuster with Automatic slack adjusters when the manual adjuster is worn out. Also Most trucks out there are to old to be on the road that still have those old manual adjusters, They just belong in a boneyard or Museum. Even drum brakes are a thing soon to be gone as all the newer trucks have Disc brakes. Lastly after watching this video we're are the backing plates leaving them off for cooling is a old wife's tail.getting water onto the inside of the drum is a dangerous thing.
@@apacheone3643 i agree about them being too old, but there are still a lot out there with manual slack adjusters. Tbh, they are not bad as long as they are adjusted right. The adjusting them is a pain and that is why a lot of drivers didn't do it and started crashing, so they came up with auto slack adjusters, which are really not any more safe than regularly adjusted manual slack adjusters, but less hassle and since drivers weren't adjusting the manual adjusters they seemed safer. The problem now is that too many drivers take auto slack adjusters for granted and do not really check them so when they eventually fail, driver either crash or hopefully get put out of service before they crash. Disk brakes are definitely the best if all 3, but come with the problem of either being difficult/nearly impossible to check, on a daily basis, or take a full class to figure out how to check them.
@@Bendigo1 There is no adjustment on Disc brakes or a Slack adjuster. The Calipers adjust themselves the chamber bolts DIRECTLY TO THE CALIPERS. I have been working with them 8 plus years. My favorite are the Mertor brakes they are superior in the size of the pad Calipers have a long life as long as they are not abused or rebuilt inproperly.. I have had a rebuilder screw up 6 sets of Calipers I video tape a brand new out of the box Caliper and sent it to the rebuilder. As far as drivers not taking care of the brakes you find that more on the privates than in the over the road company's(OTRC) . The OTRC cut corners else were like Transmissions and Engine maintenance.. The saying goes pay me now or pay me later. I have been in this field 42 years I work in Denver for two years pull trucks out of the runaway ramps.to now working for a City agency 34 years. I do know what the driver's do.
@@apacheone3643 I meant checking disk brakes for pad depth. I know of several drivers that ground them to the metal because they did not know how to check them or even that they need to be checked. I know they are not supposed to need adjustment. And on the shields, they can be dangerous on snoy or muddy conditions if snow or mud gets crammed up in there. That is why a lot of guys choose to run without them or not get them in the first place.
1/2 turn is a little too much. At 1/2 turn the brake is already at 2” stroke. Try 1/4 turn or 7 clicks and the clevice pin is free and you’re at a perfect 1-1/4 - 1-3/8 stroke every time.
But best way is to have the wheel in air and have somebody try to spin it before you start to return, and as soon as it starts spinning and you leave it there. It might even less than 1/4 turn and you will have brakes that great.
in our workshop vehicle come we change all brake chamber relay valve and handbrake valve brake drum and s cam shaft brake lining but his parking brake did not worked wh
what is a parking brake on? I have a truck release and trailer release and then trailer hand brake. When adjusting these brakes chalk the wheels and release the air valves. Then adjust them. Otherwise you will just free roll and not have brakes. I learned the hard way when no one explained that to me 20 years ago. Luckily was just in the lot and could down hill against a curb. Fixed that problem quickly lol
Man your breaks aren’t released and that is an automatic slack adjuster you aren’t supposed to mess with that unless you putting on new break shoes and that’s only to back the breaks off. You step on the breaks multiple times for them to adjust themselves, if the breaks to adjust back to normal operating specs then you replace the slack adjuster because the original is bad.
@@Rollieeeee They’re called automatic slack adjusters for a reason, and the manufacturers that make them want to keep it that way. Still, despite years of warnings, automatic slack adjusters (ASA) continue to be manually adjusted by technicians who may not know any better or who may be eager to get a truck out of the shop and back out on the road.
@@marceloevera2009 I believe my original point was based on having been put out of service by DOT and they allowed my truck back on the road so long as the brakes were properly adjusted regardless of the automatic adjusting function working.
Sorry Einstein but a half a turn is 180 degrees, 90 degrees is a quarter turn. Don't know what school you went to but you might want to re-enlist and learn your numbers since viewers like me will not take directions from anybody who does not know 360 degrees is a full revolution. DUH!.
ACK-shully practice and ACK-shully breathe and ACK-shully slow down .. then ACK-shully make the ACK-shul video??? as opposed to NOT ACK-shully doing it well
