RWAL - is this normal operation?
#1
RWAL - is this normal operation?
Hi,
I have a 1998 1500 4x4 with rwal (no front abs just rear). In the 17 years I've owned this truck I've never noticed the rwal kicking in. Last week I had the rear drums turned to eliminate shuddering during heavy braking. I was doing some high speed stops to make sure the shuddering is gone (it is) and noticed what I think is the rwal kicking in. Basically mid stop it feels like the rear brakes stop engaging and the fronts are providing all the stopping power. On my wife's car with front abs you can feel the brakes going on/off, On my ram you can feel the rears brakes turn off but they don't seem to turn on again. This causes the stopping distance to be considerably greater than prior to turning the drums. My thought is the finish left from turning the drums is causing the rears to lock up much easier. Does this sound like normal rwal operation?
Thanks, Jim
Sent from my iPad
I have a 1998 1500 4x4 with rwal (no front abs just rear). In the 17 years I've owned this truck I've never noticed the rwal kicking in. Last week I had the rear drums turned to eliminate shuddering during heavy braking. I was doing some high speed stops to make sure the shuddering is gone (it is) and noticed what I think is the rwal kicking in. Basically mid stop it feels like the rear brakes stop engaging and the fronts are providing all the stopping power. On my wife's car with front abs you can feel the brakes going on/off, On my ram you can feel the rears brakes turn off but they don't seem to turn on again. This causes the stopping distance to be considerably greater than prior to turning the drums. My thought is the finish left from turning the drums is causing the rears to lock up much easier. Does this sound like normal rwal operation?
Thanks, Jim
Sent from my iPad
#3
#5
Probably, but, whether you can hear it or not is open to debate. All the RWAL is is a dump valve on the rear brake line. I am not even entirely sure how it decides to engage.... The only clue it has how fast things are going is from the VSS, or rear wheel speed sensor...... Maybe it looks at how quickly speed changes.... who knows.
#6
#7
The 4WAL guys will do that, but, the RWAL guys don't. RWAL just bleeds off some pressure to the rear brakes via the dump valve. 4WAL actually has a pump.....
Trending Topics
#9