Air discs/T660

Popular subject.... http://www.thetruckersreport.com/tr...m-going-order-new-pete-587-a.html#post2753260

See the last couple of posts.

 

I have trailer with disk brakes. There are Knorr/Bendix, Wabco and BPW calipers on market. Some calipers are good, some not. Newer calipers are twicw liter old, so liners life is much longer especially on rought roads. New calipers are mounted on top so if you loose pad braket with springs pads will stay in caliper.

As I know they use Knorr Bremse ABD22S like on other Paccar trucks. Really Volvo, Daimler, Iveco and MAN use the same calipers on new trucks. I have previouse model on my trailer and I'd say there are many benefits. First of all - short responce time, esay to change pads, really easy. Of course - short stoping distance, you feel brake pedal like in good car, ventilated disks are not so oerheating sencetive, like drums.

But you have pay some attention on maiintanace and brake check. Inspect disks for cracks to avoid broken disk, do it every time you got in deep puddle after braking with hot disks.
Ckeck liners for play and change liners if you feel play.
inspect rubber/silicone boots, seals. If you see bad seal chang it and lubricate thread pistons. If one piston seized - chain may be broken and you can get pad exessivelly worn with caliper and disk damage.

Wabco and BPW make single piston calipers but they are not so widly used as Knorr.

Ouh, this is useful pdf for you
http://www.hendrickson.com.au/techn...Knorr Disc Brake Service Manual New Style.pdf

http://www.foundationbrakes.com/media/documents/airdiscbrakes/bendixadb22x.pdf

BTW, is your truck EBS equipped ore not? with EBS disk brakes are especially good, but EBS is an expencive toy

 

BTW, about parts.... There many aftermarket parts for Knorr Calipers. They are not expencive like genue parts. For example, in Ukraine threaded piston is 100 UAH ~ $12!!!! Parts cost for caliper rebuild is about $150 per caliper + labor. Is it expencive? Europeans use disk brakes for more then ten years, and in early 00s it was expencive, but not now. All parts for calipers are easy to find in Poland, Germany and UK, mail, EMS deliver parts in a week!