10. Replacing the brake chamber
Use only brake chambers that have been approved
for the brake by the vehicle/axle manufacturer.
Note: All information regarding the brake chamber
in this chapter relates to SAF-HOLLAND brake
chambers. For brake chambers from other
manufacturers, observe the specifications from the
respective manufacturer.
10.1 Removing the diaphragm chamber
10.1.1 Unscrew the air connection from the dia-
phragm chamber (18) (the connection line must be
depressurised).
10.1.2 Unscrew the hex nuts from the diaphragm
chamber (18) and remove the diaphragm chamber.
Do not re-use the hex nuts (see arrows).
Danger !
10.2 Fitting the diaphragm chamber
Note: For secondary ventilation (see arrow A,
small image 10.2.2), the rubber plug on the new
diaphragm chamber (18) on the downward facing
bore (when installed in the vehicle) must be
removed.
All other ventilation bores can be closed off
(observe the regulations from the vehicle
manufacturer).
10.2.1
The mating surface and flange surface
(see arrow B)
- Must be free of dirt and corrosion
- Must not exhibit any damage
- Must be flat
Ensure that no dirt or water can penetrate the inner
mechanism of the brake.
10.2.2 Before inserting the new diaphragm
chamber, smear the spherical bearing in the lever
(19) and the mating surface (B) with white grease
(supplied in the repair kit).
Do not use grease containing molybdenum
disulphide! Use only approved diaphragm
chambers in accordance with the information
from the vehicle manufacturer.
Danger !
10.2.3 The seal and plunger chamber of the dia-
phragm chamber (see arrow C) must be free of dirt
and moisture.
The seal must not exhibit any damage. If the seal
protrusion is <3 mm, the brake chamber must be
replaced.
11.1.2 - Removing the diaphragm chamber
11.2.1 - 11.2.2 - Checking the mating surface and
flange surface, smearing the mating surface and
spherical bearing with white grease
11.2.3 - Checking the seal
Replacing the brake chamber
46
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XL-SA40001RM-en-DE Rev A • 02.2016 • Errors and changes excluded © SAF-HOLLAND
