MERITOR-TP-9853
MERITOR WEDGE BRAKES
MAINTENANCE MANUAL NO. 4R
FEBRUARY 1995
MERITOR-TP-9853 - Page 14 of 32
Section 2
Disassemble Brakes
10
WARNING
When you work on a spring chamber, carefully
follow the service instructions of the chamber
manufacturer. Sudden release of a compressed
spring can cause serious personal injury.
1. Remove the clamp nut and bolt. Spread the
clamp. Remove the non-pressure housing
from the rest of the assembly.
2. Remove the diaphragm.
3. Remove the wedge guide from the push rod.
4. Remove the plate and push rod assembly.
5. Remove the rivets that hold the boot retainer
to the non-pressure housing. Remove the old
boot.
Remove the Plungers and
Bolt-On Plunger Housings
NOTE:
To remove the plunger housing, plungers
and air chamber from the trailer as a unit,
complete Step 1, then skip to Step 6.
NOTE:
An RSA housing has two adjusting
plungers.
NOTE:
Each RDA housing has an adjusting
plunger and an anchor plunger.
1. Remove the wheel, hub and drum according
to the vehicle manufacturer’s instructions.
Remove the brake shoes. When necessary,
remove the dust shield and the air chamber.
2. Remove the anchor plunger guides and the
pawl assemblies.
3. Use a pry bar or a drift to loosen the seals
from the plunger housings.
Figure 2.6.
4. Remove the seals and the actuating
components from the housing.
5. Remove the actuators and seals from the
adjusting bolts. Remove the seals from the
anchor plungers.
6. Remove the mounting capscrews and remove
the plunger housing.
Figure 2.6
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