58
11
» Y081564 - (EN - REV. 003) | JUNE 2022
Do not use grease containing molybdenum
disulphide. Use only actuators which are recommended
by the vehicle manufacturer.
It is not allowed to reuse the nuts of the brake chamber
(18).
11.1 Removal of Knorr-Bremse Brake Chamber
11.1.1 Disconnect air connection from brake chamber (18) –
take care, air connection must be free of air pressure!
11.1.2 Unscrew brake chamber mounting nuts and remove
brake chamber (18) (see arrows in Fig.).
11.2.3. The seal, as well as the push rod area of the brake
chamber (18) (see arrow
C
) must be clean and free of
lubrication.
The seal must not show any signs of damage.
Note, if the brake chamber’s seal protrudes less than
3 mm
the brake chamber must be replaced (see Fig.).
Note:
All references to brake actuators (brake chambers and
spring brakes) in this section refer to Knorr-Bremse brake
actuators. For other brake actuator manufacturers, follow their
respective instructions.
11.2 Fitting of Knorr-Bremse Brake Chamber
Note:
New brake chambers (18) have drain plugs installed (see
arrow
A
). Remove lowest plug (as viewed when brake chamber
is installed). All other drain holes should be plugged (refer to the
vehicle manufacturer’s recommendations).
11.2.1 The sealing surface and the flange surface (see Fig.
arrow
B
) must be:
- free from dust and corrosion
- free from damage
- flat
Take care that no dirt enters the brake caliper!
11.2.2
Before fitting the new brake chamber, the
spherical cup (19) of the lever and the sealing surface of the
caliper must be greased with white grease (Part No. II14525,
K093430 or II32868).
11.1.2 - Brake chamber removal
11.2.1 - 11.2.2 - Check seal and flange surface of caliper,
grease spherical cup and flange surface
11.2.3 - Check seal, min.
3 mm
11. BRAKE ACTUATOR REPLACEMENT
C
C
> 3 mm
AA
B
B
19
18
18