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My air brakes wont engage when I apply them on my trailer but I still hear air what is my problem?
Wiki User
∙ 14y ago
Sounds like you might have a bad brake chamber or brake chamber seal. I don't know if you're a company driver, or if you own that trailer, but if you are a company driver, you need to contact your company immediately and get routed somewhere to get it repaired. If you're an owner/operator, you really should do the same. If you get pulled over for a DOT inspection, they will hammer you for it.
Wiki User
∙ 14y ago
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Honda pilot left turn arrow does not blink when you apply brakes?
If you have a trailer wiring harness it probably has a short in it and is back feeding the circuit when the brakes are applied remove and replace the trailer harness and this should fix the problem.
Why does trailer abs light turn on when truck brakes apply?
Because there's either a problem with your trailer's ABS system, there's a fault in the wiring, or there's bad wheel speed sensor.
1998 Chevy siverado you are having trouble wiring for a trailer When you apply the brakes the turn signals on the sides of trailer light up How can you fix your problem?
Double check that you have a good ground on the trailer and on the vehicle. White wire should be connected to bare metal. Also ensure your trailer tail light bulbs are not twisted in their sockets.
Uhaul trailer brake controller and when i apply the brakes the unit flashes ol can you tell me what the ol means?
It's an overload. It could be a shorted wire, worn out brakes or just misadjusted brakes.
What is a cheater bar on the trailer dump on a 18 wheeler?
Maybe you're thinking of a Johnson bar, which is either attached to the steering column or on the dash, and is used to actuate the trailer brakes without actuating the remaining brakes? Real handy for extendable RNG trailers, where you must keep air supplied to the trailer, but have to apply the trailer brakes. A cheater bar is the bar used to tighten down strap winches and chain binders on flatbed and other open deck trailers.
What is primary and secondry air?
If you're referring to air brake systems, primary air supplies service air pressure to the brakes on the drive axles and the trailer axles when the foot valve is used to brake. The secondary air system supplies service pressure to the brake system on the steer axle, as well as the trailer when the hand valve is used to apply the trailer brakes.
What is Primary and secondry?
If you're referring to air brake systems, primary air supplies service air pressure to the brakes on the drive axles and the trailer axles when the foot valve is used to brake. The secondary air system supplies service pressure to the brake system on the steer axle, as well as the trailer when the hand valve is used to apply the trailer brakes.
When you apply the brakes hard the vehicle has a pull which is accompanied by a vibration?
If the car vibrates when the brakes are applied, it could be a sign that the brakes or rotors need to be checked or replaced. When a problem like this occurs, it is best to get it checked out as soon as possible to avoid worsening the problem.
Do trailer brakes automatically lock when the air lines have been disconnected?
Air pressure within the air braking system of a tractor-trailer (or large truck) is what prevents the brakes from being applied. The pressure of the air pushes back a large spring at each wheel. The large spring will apply the brakes when there is no pressure in the system. When the driver steps on the brake pedal, air is released out of the system and the brakes are applied. When the driver's foot comes off the brake pedal, air is quickly pumped back into the system and the brakes are released. Disconnecting the air line has the same effect on the trailer's brakes. Air is released from the system, and the brakes are applied. It is not the brakes themselves that lock. Application of the brakes causes the wheels to lock.
If you drive through water your brakes may become slippery and ineffective to dry the brakes off?
apply your brakes gently while accelerating at the same time
Why wont my brakes grab on my trailer when I apply them they are air brakes?
Most likely answer is that it has something to do with your brake chamber. Bad brake chamber, bad seal.. something to that effect. There may also possibly be blockage in the air line. When trailers are parked in the yard, at customers, etc., there's usually nothing done to cover the glad hands, and stuff can get into the air lines that way.ANSWERThe most logical answer is the trailer brakes are out of adjustment. A VERY common problem with HD air brakes. DOT will fine you and put you out of service if they catch your running with brakes out of adjustment. Call a road service and get them adjusted properly >before< you hit the road again. A driver is totally and 100% responsible for assuring brakes are properly adjusted and working correctly. If your are sure they are adjusted right make sure your air lines are connected right, red on red, blue on blue, make sure you push in both the red and yellow brake valves on the dash. (charging the trailer brake air supply) If you will hook your trailer, roll your gear up, and then tug against the trailer with both dash valves, or the one big yellow valve, pulled >out< (trailer brakes not charged) and the trailer rolls forward with the tractor your trailer brakes are Definitely out of adjustment. When trailer brakes are properly adjusted a trailer will not budge when the spring brakes are set!!! Brake shoe Adjustment does indeed affect the parking spring brakes ability to lock all wheel's when a trailer has no air charge. Dude! I can't believe you actually passed a CDL air brake test! No offense intended here but you seriously do need some refresher training!! Truckers are legally responsible to make sure their equipment operates properly and is safe on public roads at all times. You have GOT to learn air brake basic man!!
What could cause a 'ping' sound when stepping on the brakes of a 1996 Ford Windstar?
Well I seem to have a similar situation.. I would say your 'ping' is a bit of a 'sprong' on my 95 Windstar. Further the brake pedal seems to bind, makes the sound and not engage the brakes.. I can apply more pressure and pass through the bind to engage the brakes or with some pumping of the pedal the binding dissipates and the brakes engage properly.. I was wondering if this is similar to your situation? Unfortunately I do not have the answer; I am on the 'net today looking for information! Should I find any info pf value I will post here.. Regards, Styx
