MM-34
Revised 11-02
Page 35
Meritor WABCO System Saver Series Single Cartridge Air Dryer
Component Replacement Guide
BYPASS VALVE
ASSEMBLY
Bypass valve is used on dryers with
date codes earlier than 0894.
1002189a
O-Ring
Do not grease
diaphragm.
1200 Series air dryers do not use
bypass valve.
HEATER ASSEMBLY
• Disconnect plug.
• Remove old assembly.
• Install replacement element and
thermostat.
— Install retainer and screw to
secure.
• Install replacement O-ring and
receptacle.
— Fasten in place with
screws.
DESICCANT CARTRIDGE
• Remove old cartridge.
• Lube and install O-ring.
• Install replacement cartridge.
T
PRESSURE RELIEF VALVE
• Unscrew and remove old valve.
• Screw replacement valve into
dryer or Street-Tee fitting.
• Do not exceed recommended
torque. See Pressure Relief
Valve in Section 3.
REGENERATION
VALVE ASSEMBLY —
REGENERATION STYLE
DRYERS ONLY
• Remove old assembly and
diaphragm.
• Clean diaphragm lip groove.
• Install replacement.
diaphragm and assembly.
PURGE VALVE ASSEMBLY
• Remove old assembly.
• Clean valve bore.
• Grease valve bore.
• Install replacement assembly.
1800
1200
*
E Series dryers use a different style
turbo cut-off valve (see Parts Book
PB-96134).
**
Spring not used with U Series dryers.
NOTE: If shims are included in the
replacement kit, install one above
and one below the spring.
OUTLET CHECK
VALVE ASSEMBLY
• Remove old
assembly.
• Clean valve bore.
• Install replacement
O-ring in bore.
Then, grease O-ring
and bore.
TURBO CUT-OFF
VALVE ASSEMBLY
*
• Remove snap ring.
• Remove desiccant
cartridge.
• Use a wooden stick to
push pistion, spring and
cover out of the bore.
• Clean bore (if bore is
badly damaged,
replace the air dryer).
• Install replacement
assembly.
• Replace desiccant
cartridge.
*
*
SHIMS
(IF REQUIRED)
