BENDIX PIGGYBACK SPRING BRAKE Manuel - Sayfa 6
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SERVICE
CLAMP RING
SERVICE
DIAPHRAGM
FIGURE 6 - SERVICE DIAPHRAGM
4. Uncage the main spring and return the release tool into
the release tool side pocket.
5. Replace the dust cap in the keyhole.
WARNING!
Check for proper service and emergency operation
after servicing any part of the brake chamber(s). Check
the brake adjustment if the combination spring brake
was removed/installed (Follow vehicle manufacturer's
instructions to adjust the brakes).
REPLACING THE SERVICE DIAPHRAGM
To replace the service diaphragm, it is not necessary to
remove the complete combination spring brake from the
vehicle. However, it can be removed for ease of access. To
remove the combination spring brake, perform the steps
outlined in "Removal and Installation of the Combination
Spring Brake".
WARNING!
•
A piggyback spring brake chamber cannot have
the emergency diaphragm replaced. Replace the
whole piggyback spring brake chamber.
1. Protect the service push rod with tape, and lock the vise
grips on the push rod close to the non-pressure plate.
(This will hold the rod in the applied position).
6
RELEASE
TOOL
PIGGYBACK
CHAMBER
NON-PRESSURE
HOUSING
BW2106 © 2004 Bendix Commercial Vehicle Systems LLC 8/2004. All rights reserved. Printed in U.S.A.
2. Ensure that the piggyback spring brake chamber is
caged. To cage the piggyback spring brake chamber,
perform the steps outlined in either "Mechanical Release
of the Bendix Piggyback Spring Brake" or "Mechanical
Release of the Piggyback Spring Brake to be Replaced".
3. Mark the service clamp ring and non-pressure plate to
ensure proper alignment of parts during reassembly.
4. Remove the service clamp ring assembly and the
piggyback chamber. The service clamp ring is closest
to the non-pressure plate and slack adjuster. See
provided illustrations if in doubt.
WARNING!
Do not remove the spring chamber clamps.
5. Visually inspect the service diaphragm for excessive wear,
damage or cracks. Replace if needed.
6. Line up the piggyback spring brake chamber, the service
diaphragm, and the non-pressure housing, ensuring that
they are centered.
7. Reassemble the service clamp assembly. Ensure all
parts are seated properly and remain centered.
8. Torque the clamp nuts to 25 ft/lbs. Remove the vise grips
from the service push rod.
9. Reconnect the emergency air line to the emergency
porthole and reconnect the service air line to the
service porthole.
10. Pressurize the service half by putting air into the service
port. Do not exceed 120 psig. Test for leaks around the
clamps. No leaks are acceptable.
11. Uncage the main spring and return the release tool into
the release tool side pocket.
12. Replace the dust cap in the keyhole.
WARNING!
Check for proper service and emergency operation
after servicing any part of the brake chamber(s). Check
the brake adjustment if the combination spring brake
was removed/installed (Follow vehicle manufacturer's
instructions to adjust the brakes).