SECTION 12: BRAKE AND AIR SYSTEM
DOB 2490-2789 | X3-45 Commuter PA1605 Maintenance Manual (Final Version – Rev.2 April 2016)
9
7.1.2 Final
check
1. Start the vehicle. Wait for the air system to
reach full operating pressure. When the
compressor cuts out, listen to the air dryer. If
either of the following conditions exist, refer
to Meritor Wabco System Saver 1000
Maintenance Manual No. 34.
The air dryer continues to exhaust air for
longer than 30 seconds.
The air dryer does not exhaust air after
initial decompression.
2. Shut engine OFF. Apply a soap solution to
each connection that contains pressurized
air:
If soap bubbles do not appear, connec-
tions are sealed properly.
3. If soap bubbles appear:
Drain all reservoirs.
Remove leaking connection.
Inspect for damaged threads or cracks;
replace as necessary.
Apply pipe sealant (Loctite 567) or teflon
tape to the connection.
Repeat
process.
7.2 DESICCANT
CARTRIDGE
REPLACEMENT
1. Apply parking brakes, set the ignition switch
to the OFF position.
2. Replacement kit contains one desiccant
cartridge and one O-ring.
3. Purge the air filter and wet air tank. To do
so, open the air system emergency air-fill
valve drain cock (Figure 3).
4. Loosen and remove the old cartridge. Use
strap wrench if necessary.
5. Remove and discard O-ring from dryer base.
Inspect and clean seal seat (Figure 10).
6. Repair any minor damage.
7. Lubricate with clean machine oil and install
new O-ring on stem.
8. Lubricate cartridge seal with clean machine
oil.
9. Thread replacement cartridge onto the base
until the seal touches the base. Then,
tighten the cartridge
ONE
addition turn.
DO
NOT OVERTIGHTEN
.
FIGURE 10: DESICCANT CARTRIDGE REPLACEMENT
8.
HALDEX CONDENSER - SEPARATOR
The Consep Air Condenser-Separator is located
in the rear wheelhousing, fore of drive axle
(Figure 1). The Consep is mounted in the air line
between the compressor and the air dryer. It
condenses, separates and removes 90% of the
oils, liquids and other contaminants. It reduces
corrosion and possible failure of air brake
system components caused by contamination
and significantly increases the air dryer
desiccant life.
FIGURE 11: HALDEX CONSEP CONDENSER
SEPARATOR
The automatic heated drain valve installed on
the Consep ensures that liquids are removed
upon each brake application for optimum
performance. The drain valve’s integrated filter
prevents damage from large debris.
The automatic drain valve activates when the
rear stop lights turn ON, with the prerequisite
