MCi Crusader II 1989 Maintenance Manual page 176

Date
1 -1-89
Page __
4_-4_6 _ _
MC-9 MAINTENANCE MANUAL
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MOUNTING STRAP
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S EAL:NG RING
,a,CRCWN
'<UT
EALING RING
CHECK VALVE
ASSEMBl.Y
OEl.lVE
PO
PURGE VALVE
END COVER
ATER VOLTAGE
SHOWN
SPECIAL WASHER
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CAPSCREW ",
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I '
fl
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C ,
THERMOSTAT ,\$SEM6l.Y
EXHAUST COVER
5
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EXHAUST DIAPHRAGM
DIAPHRAGM RETAINER CAPSCREW & LOCKWASHER
Figure 4-62. A0-4 Parts Breakdown.
DISASSEMBLY
1. Refer to figure 4-62. Remove the eight 3/s'' crown nuts,
spring washers. special wasners and capscrews trom tne
flange of the air dryer and separate the end cover from the air
dryer shell.
2. Separate the desiccant cartridge and sealing plate
from the end cover. Remove and discard the three sealing
rings. One sealing ring 1s located in the groove on the sealing
plate and the other two are
in
grooves in the end cover.
3. Remove the
'!,"
capscrew and lock washer from tne
bottom of the purge valve and remove the diaphragm
retainer. exnaust diaphragm and purge valve. Discard the
exhaust diaphragm-and purge valve. Remove the purge
valve piston and discard the 0-nng.
4.
Remove and discard the check valve assembly ,n the
recess at the dehvery port on the end cover.
5. Remove the safety valve from the end cover (only if it
has been determined during service checks that ,t needs
replacement.)
6. To remove the thermostat see Thermostat Repair.
below (only if it has been determined that 1t needs replace-
ment).
7 Remove the exhaust piston and spring from the top
side of tne cover.
8. Remove the 0-ring from the exhaust piston and dis-
card the 0-rmg.
9. Remove the four 'I," capscrews and tock wa~hers that
secure the sealing plate to the desiccant cartridge. Separate
the sealing plate from the desiccant cartridge and discard
the sealing ring at the base of the cartridge.