Airflex
®
DBB 8110 Brake Assembly E-CLCL-TT001-E December 2012
17
Figure 11
not have the slot then they are solid wear spacers
and the DBBS must be disassembled per 4.2.2 in
order to make adjustments.
Caution
Be sure to follow 4.2.3.4 instructions complete to
prevent damage to the brake components
4.2.3.1 Disconnect the air supply lines from the brake. Wipe
down the brake and match mark all components
from the mounting flange (2) to the cylinder (19)
prior to disassembly. Match marking all components
will ensure that the components are reinstalled in
the orientation and location from which they were
removed.
4.2.3.2 Wear adjustment can be conducted without full
disassembly of the Multi-disc DBBS brake. The wear
adjustment spacers are slotted to allow for easy
removal with a chisel. See Figure 11.
4.2.3.3 Wear spacers shall be removed in complete sets only
(one from each stud location). Mark the spacers to be
removed to avoid confusion during removal.
Warning
Removal of spacers in quantities other than complete
sets (layers) will result in severe damage to DBBS
components during reassembly and could cause the
brake to not function properly.
4.2.3.4 Loosen the locknuts (18) one at a time and in an
alternating (crosswise) pattern to prevent binding
of the cylinder on the studs. Continue to loosen
the locknuts until the force of the release springs is
relieved, allowing for access to the wear spacers. It
may be necessary to push the reaction plate(s) away
from the mounting flange so that the release springs
can be moved to gain access to the wear spacers.
Caution
The locknuts (18) must be loosened gradually to
prevent damage to the brake components.
Caution
Remove discs as needed so that they do not fall off
the gear during maintenance.
4.2.3.5 Using a narrow chisel wedged into the slot in the
wear spacer, pry the wear spacer until it fractures
and is clear to be removed from the stud. Repeat
for the remaining spacers in the set that is to be
removed (one spacer from each stud position).
See Fig 11.
Removing Split Wear Spacers with Chisel
Warning
Be sure to collect all wear spacers when removed.
Spacers lodging in between brake components
could prevent the brake from properly engaging or
releasing.
4.2.3.6 While supporting the weight of the cylinder/piston
assembly, tighten the locknuts (18) ONE TURN AT
A TIME and in a crosswise pattern until the cylinder
is seated firmly against the clamp tubes. Torque the
locknuts to the appropriate value. See Table 4.
Caution
The locknuts (18) must be tightened gradually and
evenly to prevent damage to the brake components.
4.2.3. 7 Restore any piping or covers removed prior to
operating the brake.
4.3
Friction Disc Replacement
Caution
Use only genuine, Airflex friction material. Use
of material not of Airflex origin may result in
unpredictable brake performance and/or excessive
wear of the brake components.
DBBS Brakes
Summary of Contents for Airflex DBBS
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