great advice , i bet a lot a shop will charge you to put a new abs valve plus the hoses to charge more $$$ , tip --always have tools w/you to check things by yourself
Just had this issue/solved on a ‘17 Mack Cxu612 I pinched lines at chambers at nothing. Put my hand over abs valve and saw chambers moving. Went to quick release valve that supplys air to emergency side of chambers which sits behind 5th wheel and pinched the lines with then the ABS valve stopped leaking . Removed quick release valve and blew air into it and was restricted some . Replaced quick release valve with both 90° fittings and retested. No leaks returned to customer
You just saved me, I was 1 mile from thermo king And I watch this video before I get to thermo king and get what my fucking refrigerator starts in 2 minutes brother thank you for making these educational video you're a fucking crack yeaaaaa I saved my money 😂
Ok men i have same problem the mecanic change 2 chambers drive side but still doing now changes after 4 months changes the others 2 and valves but now when i pulls trailer brakes drain air from my safety valve like 2 or 3 seconds and then put brakes on trailer i though was my valve so i change it and still doing tractor its mine but trailer company and start drain air after mecanic changes valves in the trailer trailer
Was looking for a video to help tear down and repack my boat trailer hubs. Interesting how the parts are all the same with the size and weight being the only things that vary. Great video! Thank you.
Great video. I see where I made my mistake. I was squeezing the lines at the relay valve and the sound would change but didn’t stop. Now I will try the same thing at the actual chamber !! Got it. Thanks bro!!!
Hi This is Abe I have a Dump truck Guys believe me I am working on my Truck for tow days !!! I couldn't find the problem!!! So tomorrow I am going back to my Truck to check it ,, Thank you 👏👏👏👏
So when I pinched off the hose, leak stopped at the valve. Waited ten seconds, took the grips off and complete air leaking went away and pressure built up. Any idea what it could be?
👍👍👍👍👍👍👍👍💯💯💯💯💯💯💯💯💯 THANK YOU!!!!!!! I WOULD HAVE SPENT $300 FOR NOTHING REPLACING THAT ABS MODULATOR! $75 FOR A PIGGY BACK BRAKE CHAMBER KIT FIXED THE PROBLEM! RESPECT.
Ey bro I just change 2 seals on a trailer on same axle I put a new one and lead put second one and leak what do you think I’m doing wrong it’s a double not axle torque inner to 200 backed off 1 turn re torque to 50 then back off 1/4 set locking washer torque outer not to 300
Clean axle and wheel hub surfaces with a emery flap wheel on a die grinder . Apply #2 Permatex sealant on the outside of metal banded wheel seals . Clean cup and cone with either . 5/16~18 tap installed in cordless drill to clean out hubcap bolt holes . Apply anti-seize to hubcap bolts . 67/23
My ABS valve blast out air when ever I push on the brakes. Major leak. Only leaks when stepping on the brakes. Tried pinching of air lines, no luck. Will bleed off air tanks in 30 seconds.
When you have the brakes applied you can go underneath the unit, pull the plastic cap off of the Air brake chambers and see if the spring is broke. Typically can just use your hands to tap it and if it rattles like a rattle snake then you have a bad air brake chamber. Causes air to leak back to the abs module valve due to not holding the pressure onto one side. It could also be a bad diaphragm but that typically will bleed the air through the chamber itself. Hope that helps and also remember to chock wheels and cage air brake chambers if changing out yourself.
My brakes are not fully releasing on take off and drags bad when coming to a stop. Abs lights comes and but turns off when cycling power. Anyone know if this the problem ?
Check the air brake chambers when brake valve is applied and see if you have more than one inch of travel while prying on with pry bar. Then release brakes and apply brake foot pedal and see if the push rod exerts all the way. If so you'll need to change the chambers. Also can use a spray bottle with soapy water and spray directly on chambers and if it comes through the pushrod area then it's bad due to the spring or diaphragm
