I've been +30 yrs at this scene and I'd say virtually no other aspect of heavy vehicle technology hasn't changed as much as the brakes. My regular one (6x2 rigid + 5-axle drawbar trailer) has electrically controlled disk brakes with ABS (law requires). There're many benefits, eg. when I stomp the pedal the pads hit at the same time to the disks all over and releasing as well simultaneously, furthermore they're always without slacks and wearing evenly - especially wintes are a bit easier today.
@jboydmv90 Not sure what kind of equipment you work on or size of pots, type 20, 24 maybe? But with a 30/30 you want to back off a a half turn. And optimal push rod travel is 1 1/4- 1 1/2. <- 30/30 mind you.
@studpuppy69 it does not change with long stroke, The only difference is if your brakes are out of adjustment, the long stroke will still be able to apply the brakes somewhat whena regular stroke has already bottemed out....That is the main difference. I have even talked to CVSE about this and they said the same thing.
-- I was coming from Ohio Mainsfield OH took off 12:15 am on 9-16-2010
appointment for load delivery was Waukesha (Milwaukee) (WI) 8:00 AM on 9-17-2010 so I have 22 hours to do the trip . of 450 miles.
Police stop me in WI scale on I-94 at 7:00 am 9-17-10 police called company where I took off , and their time was 11:45 am , I got 10 hour stop and violation.
and 263 $ fine. IS this connected to safety ? How can you not hate the Police.
@aviomaster Can you try to clarify a few things? I believe you meant 12:15PM, then you have 19 Hrs 45 Minutes until 8:00AM the next day. If it was 12:15AM... it would be only 12:15AM the next day with 7 Hrs 45 Minutes remaining for delivery.
The other thing I don't understand is 11:45AM to 7:00AM is 16 Hrs 15 Minutes while 12:15PM to 7:00AM is 15 Hrs 45 Minutes. Either way youre over 15 Hours.
If it was 12:15AM as you said (though i believe thats a typo) that would be under 7 hours.
@aviomaster no it's not about safety, it's about revenue. I was put out of service at the port of entry in North Dakota for 10 hours & fined $200.00 even though I'd just taken a 10 hour rest period & had only driven an hour. by the time they cut me loose I was too tired to drive.
this guy rambles on and on. Its as easy as this, turn the adjusting nut and make sure the brake pad is going toward the drum or the push rod is going into the air can, when tight back off, and your good to go.
By the way he backed off the brake a full half turn which is a no no, your should back off a qtr turn. I don't know how many brake classes I have went too and they all said the same thing.
I'm just studying for the airbrakes course this weekend and ICBC states there is a type 30 and a type 30LS (LS meaning long stroke) They give the type 30 2.5'' and the type 30LS 3'' of maximum available stroke. Just wanted to add that.
Look folks......Been a commercial truck driver and owner for over 25 yrs......
Here is what I go by.....
First things first..You're safety as well as others should never be 2nd guessed.
I ran manual slacks back in 80's and early 90's......Which are no longer put on new trucks..(I believe 1993 was the last yr for manual slacks...I PREFER MANUALS....
Sorry but auto's..they say to just leave them be if working right,,,Not me...I still "touch em up" every week.I like my brakes "touchy"
This video realy ONLY applies to Manual Slack adjusters. Auto slacks should not be adjusted if they are working properly. This video is giving truck drivers the wrong info for auto slacks. Also note that every time you back off and hear that ratcheting sound you are shortening the life of the auto slack, unless you have Meritor auto slacks.
Also the slack should have been cleaned so we can properly see it.
This video shows the MANUAL adjustment of an AUTOMATIC slack adjuster which is not only a dangerous practice but also illeagal for any driver to do in most states and provinces.
I've been an air brake instructor a lot of years and unfortunately "dave0z96" you're wrong on that statement.
Look up Rockwell and Meritor slack adjusters. They both have similar designs to this.
That is an automatic slack adjuster. There should be no reason to have to adjust it UNLESS something isn't working right. So.......good video, but this
@mmocahbee That is not an auto slack. On automatics you have a pawl on the side or back to pry out on, to adjust, and the adjusting screw is usually is on the top which has no ratcheting or clicking mechanism. This has the ratcheting or clicking mechanism which means its a manual. But you are right on automatics it should only be adjusted during the install, or if something aint working right.
@dave0z96 This IS an automatic slack. There are 2 pins going through the clevis. The smaller of the 2 is the auto adjuster. When the brakes are applied that moves first and keeps the brakes adjusted. Not all auto slacks have the pawl you pull.
I have a 1989 Pete 379 and my service brake pedal won't depress. The air systems works fine, both the parking and trailer brake release, but the service brake won't budge.
Its the MTA not the MTO, the CHP regulates the roads and bridges and they are the one who are going to give you a ticket., man you need to study more.
Sometimes a full 1/2 turn backed off is too much, and the truck can roll on a hill with the parking brakes applied.
I was always told to back off 1/4 to 1/2 turn. I use 1/3 of a turn, and works just fine.
Good vid, but could have said more with fewer words.
With manual slacks, if the adjuster turns really easy, you need to go the other way to reduce the shoe clearance. Should have pressure from the brake return springs.
how do you know if the brakes need adjustment or not by just looking at the brakes?
TheSinsano 1 month ago
Comment removed
TheSinsano 1 month ago
Ever hear of a pressure washer?
docmccoy333 1 month ago
The CDL pre trip as of 2011 is ONE inch of travel.
fpeletz 3 months ago
how do ya know what type you have
maidenrulz73 4 months ago
Thank You this is very helpful to me
tboyd706 5 months ago
I've been +30 yrs at this scene and I'd say virtually no other aspect of heavy vehicle technology hasn't changed as much as the brakes. My regular one (6x2 rigid + 5-axle drawbar trailer) has electrically controlled disk brakes with ABS (law requires). There're many benefits, eg. when I stomp the pedal the pads hit at the same time to the disks all over and releasing as well simultaneously, furthermore they're always without slacks and wearing evenly - especially wintes are a bit easier today.
OttovonEarth 6 months ago
Great video. Thanks for making it
Fastdirt505 6 months ago
Just crank it down and back it off a 1/4 turn its not that hard it comes out perfect everytime
jboydmv90 8 months ago
@jboydmv90 Not sure what kind of equipment you work on or size of pots, type 20, 24 maybe? But with a 30/30 you want to back off a a half turn. And optimal push rod travel is 1 1/4- 1 1/2. <- 30/30 mind you.
MrKornKid 8 months ago
mr Vokes?
mpaoness 10 months ago
@mpaoness haha yeah I think it is
97cummins2wd5spd 1 month ago in playlist Uploaded videos
brake
karthikSeerthi 11 months ago
we just tighten and loosen a quarter turn then your done
juggla1766 1 year ago
2 inches is not the spec everywhere, where i live it is 1 3/4 for the applied method or 3/4 for the pull method
sum42guy2k 1 year ago
@sum42guy2k It varies. Some have long stroke brake chambers.
studpuppy69 1 year ago
@studpuppy69 it does not change with long stroke, The only difference is if your brakes are out of adjustment, the long stroke will still be able to apply the brakes somewhat whena regular stroke has already bottemed out....That is the main difference. I have even talked to CVSE about this and they said the same thing.
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fujinu89 1 year ago
I do my own work on brakes pad change and adjusting slack adjuster but it is g a good thing to have videos like this here.
been around trucks since I was born.
aviomaster 1 year ago
-- I was coming from Ohio Mainsfield OH took off 12:15 am on 9-16-2010
appointment for load delivery was Waukesha (Milwaukee) (WI) 8:00 AM on 9-17-2010 so I have 22 hours to do the trip . of 450 miles.
Police stop me in WI scale on I-94 at 7:00 am 9-17-10 police called company where I took off , and their time was 11:45 am , I got 10 hour stop and violation.
and 263 $ fine. IS this connected to safety ? How can you not hate the Police.
aviomaster 1 year ago
@aviomaster Can you try to clarify a few things? I believe you meant 12:15PM, then you have 19 Hrs 45 Minutes until 8:00AM the next day. If it was 12:15AM... it would be only 12:15AM the next day with 7 Hrs 45 Minutes remaining for delivery.
The other thing I don't understand is 11:45AM to 7:00AM is 16 Hrs 15 Minutes while 12:15PM to 7:00AM is 15 Hrs 45 Minutes. Either way youre over 15 Hours.
If it was 12:15AM as you said (though i believe thats a typo) that would be under 7 hours.
depth386 1 year ago
@aviomaster no it's not about safety, it's about revenue. I was put out of service at the port of entry in North Dakota for 10 hours & fined $200.00 even though I'd just taken a 10 hour rest period & had only driven an hour. by the time they cut me loose I was too tired to drive.
kdraper2007 1 year ago
good vid
roadragetruck 1 year ago
Thank you for this video.
ENCOMAN 1 year ago
this guy rambles on and on. Its as easy as this, turn the adjusting nut and make sure the brake pad is going toward the drum or the push rod is going into the air can, when tight back off, and your good to go.
By the way he backed off the brake a full half turn which is a no no, your should back off a qtr turn. I don't know how many brake classes I have went too and they all said the same thing.
punx8086 1 year ago
I'm just studying for the airbrakes course this weekend and ICBC states there is a type 30 and a type 30LS (LS meaning long stroke) They give the type 30 2.5'' and the type 30LS 3'' of maximum available stroke. Just wanted to add that.
vanisljoe 1 year ago
btw...To answer the other question...Most manual slacks were 9/16
Auto's can be from 5/16 with pawl......7/16 to 1/2 inch{without pawl}
StayingBack71 2 years ago 2
Look folks......Been a commercial truck driver and owner for over 25 yrs......
Here is what I go by.....
First things first..You're safety as well as others should never be 2nd guessed.
I ran manual slacks back in 80's and early 90's......Which are no longer put on new trucks..(I believe 1993 was the last yr for manual slacks...I PREFER MANUALS....
Sorry but auto's..they say to just leave them be if working right,,,Not me...I still "touch em up" every week.I like my brakes "touchy"
StayingBack71 2 years ago 2
@StayingBack71 ive worked at 3 truck shops, all our wreckers and fleet trucks always had manual slacks
mageac 1 year ago
@StayingBack71 Amen to that driver.
Bryansnod 1 year ago
9/16 or 14mm wrench.
carlosjbrr 2 years ago
What size wrench are u using to make this adjustment. Metric and standard. Does anyone know>>??? Thanks
George4Ginger 2 years ago
This video realy ONLY applies to Manual Slack adjusters. Auto slacks should not be adjusted if they are working properly. This video is giving truck drivers the wrong info for auto slacks. Also note that every time you back off and hear that ratcheting sound you are shortening the life of the auto slack, unless you have Meritor auto slacks.
Also the slack should have been cleaned so we can properly see it.
onig59 2 years ago
I agree. For demostration purposes I wished they would have taken another 30 seconds for this video and blasted it with a pressure washer...
vanisljoe 1 year ago
This video shows the MANUAL adjustment of an AUTOMATIC slack adjuster which is not only a dangerous practice but also illeagal for any driver to do in most states and provinces.
I've been an air brake instructor a lot of years and unfortunately "dave0z96" you're wrong on that statement.
Look up Rockwell and Meritor slack adjusters. They both have similar designs to this.
M1E3P2 2 years ago
That is an automatic slack adjuster. There should be no reason to have to adjust it UNLESS something isn't working right. So.......good video, but this
video is pointless on an automatic slack.
mmocahbee 2 years ago
@mmocahbee That is not an auto slack. On automatics you have a pawl on the side or back to pry out on, to adjust, and the adjusting screw is usually is on the top which has no ratcheting or clicking mechanism. This has the ratcheting or clicking mechanism which means its a manual. But you are right on automatics it should only be adjusted during the install, or if something aint working right.
dave0z96 2 years ago
@dave0z96 This IS an automatic slack. There are 2 pins going through the clevis. The smaller of the 2 is the auto adjuster. When the brakes are applied that moves first and keeps the brakes adjusted. Not all auto slacks have the pawl you pull.
mmocahbee 2 years ago
@mmocahbee Thanks, I never worked this style, and should have paid better attention to the video.
dave0z96 2 years ago
Automatics should not be adjusted by drivers except in an emergency.
vanisljoe 1 year ago 2
good video,but how would a person do all these things solo on pressing and depressing brakes,since I'am new at all these brake adjustments.
ncck09 2 years ago
Comment removed
ncck09 2 years ago
It would be nice to have a little light on the subject. It is good to have the vid though. Thanks
flyinghaymann 2 years ago
Very well done video. Good work.
crazymikey86 3 years ago
I have a 1989 Pete 379 and my service brake pedal won't depress. The air systems works fine, both the parking and trailer brake release, but the service brake won't budge.
Gladiator0719 3 years ago
Good vid. I just adjusted mine using the guidance of this clip and they work much better now and are right within specs. Thanks!
turbosuperiority 3 years ago
The MTO he is talking about is the Ministry of Transportation Ontario. And in Canada most people call link pins Celvis pins
johnstone91 3 years ago
Its the MTA not the MTO, the CHP regulates the roads and bridges and they are the one who are going to give you a ticket., man you need to study more.
funguy661 3 years ago
A clevis is a D ring used for towing..You are pointing at the link pin for the brake piston rod that attaches to the brake cam arm.
funguy661 3 years ago
thoes are the most god aweful looking brake system. Look at all that grease. Looks like someone took a hammer to em' ever herd of degrease?
funguy661 3 years ago
great video, mto officers are assholes, if thye dont find brakes out of adjustment they will find something else wrong for sure
bojan94 3 years ago
what with the 90 degre ????? I learned that it was important ...
mickd1980 3 years ago
Can you email this video to me. I thought this was well done and I will use this to help teach my class.
edyer01 3 years ago
Sometimes a full 1/2 turn backed off is too much, and the truck can roll on a hill with the parking brakes applied.
I was always told to back off 1/4 to 1/2 turn. I use 1/3 of a turn, and works just fine.
Good vid, but could have said more with fewer words.
With manual slacks, if the adjuster turns really easy, you need to go the other way to reduce the shoe clearance. Should have pressure from the brake return springs.
bigstretch100 4 years ago 2
@bigstretch100 1/2 turn on the steer axle 1/4 turn on rears
4inches4u 1 year ago
good vid
a73121 4 years ago
very good info
cpuzzo 4 years ago