Sunday, August 12, 2012

Knorr-Bremse part numbers...N00/K00...what's the difference?

Knorr-Bremse in the past has made it hard to work with their part numbers (my opinion), just think about part number / type number issue or simply compare with Wabco.

Partially this is consequence of the fact that Knorr has acquired air-brake divisions of Robert Bosch, Magneti Marelli, Bendix, Paul Dahl and they had to integrate all those references to their database. Not an easy job, I admit.

In August, 2007 they introduced a new approach to index their part numbers which now refers to 4 main properties of the product.

How does it work?

Thursday, August 2, 2012

Scania APS not working properly - 3 major causes of defects

This blog entry is the second part of our previous entry that can be found here:
about the Scania APS unit, identified by 1543224, 1770184, 1796161, 1796163, 1941953, 1897631, 2063357 Scania and 9325100040, 9325100050, 9325100060 Wabco numbers.

When the APS unit is defect, the driver will first notice a yellow or red warning signal: "APS problem".

The other thing he will notice is that the cartridge regeneration process, that normally takes 10 sec only, will not stop, the unit will continue to blow (exhaust)

Subsequently this leads to a failure in building up and maintaining system pressure and the compressor will be forced to work all the time, unable to utilize the ESS (energy-saving system) which reduces the fuel consumption and engine load by 7 hp.