5
Introduction
1
1 1 Service Intervals
The service interval is the length of time from the vehicle
first entering service, or from the last service, until the point
in time – or distance travelled by the vehicle (whichever is
the earlier) – when it is recommended that the specified
braking system device is serviced using a genuine
Knorr-Bremse service kit or replaced with a new part, or in
the case of ABS subjected to a system functionality check.
This service interval is provided for preventative
maintenance purposes so as to minimize the probability of a
vehicle breakdown.
The service interval does not preclude the intermediate
testing of the device on the vehicle to ensure that it is
functioning in a correct manner, or the correct maintenance
of other devices in the system that may influence the
service interval.
The service interval can be influenced by the application
and the operating conditions of the vehicle. The following
service intervals are based on the assumption that each
device is positioned so it cannot be inadvertently abused
or that external rubber boots/seals are not exposed to
abnormal influences.
In general, Knorr-Bremse service kits contain all of the
components that can deteriorate with use, such as rubber
parts (O-rings, special seals, bonded inlet/exhaust valves,
exhaust flaps), plastic and metal parts (filter elements and
springs), fasteners and the correct grease. The range of
kits is designed to enable each device to be serviced in
part or completely.
Knorr-Bremse service kits are only designed for use with
genuine Knorr-Bremse devices and are only to be used
in the manner detailed in these service instructions.
After servicing, the device must also be checked in
accordance with Knorr-Bremse service instructions to
ensure correct operation before the vehicle is placed back
in service.
Additional checks
In addition to the above, and any legally required periodic
vehicle inspections, it is recommended that simple routine
inspections of a general nature are carried out to maintain
the braking system at a high level of functionality. These
simple routine inspections should be (1) the weekly checking
for excess water in the reservoirs by operation of the
reservoir drain valves, and (2) the 6 monthly / (50,000 km)
checking of the complete braking system for excessive air
leakage during a maximum pressure foot brake application
with the vehicle stationary and the parking brake released.
Service interval
Service
Notes
Refer to vehicle manufacturer.
30 000 km recommended.
Clean the oil separator and replace the O-Rings
(If necessary the service interval can be revised,
depending on the amount of oil carryover).
Failure of the air processing unit to purge
or non-replacement of the desiccant
cartridge at the recommended interval
can cause a reduction in the service
interval of downstream components.
Refer to vehicle manufacturer.
1 year recommended.
Replace the desiccant cartridge.
Replace the oil separator, if necessary.
