HP 5890 SERIES II Service Manual page 187

c. Mount the cryogenic nozzle on the valve and tighten it firmly with a wrench. (Be sure to
install a CO nozzle (if one was present) in the same position as the old one.)
2
d. Go to step 22.
20. If a PCOC cryogenic nozzle is installed, proceed as follows:
a. Remove the injection port cover by
grasping its back edge and lifting it upward.
b. Remove the auto- injection assembly
(or optional manual injection assembly)
by rotating it counter- clockwise). Be
careful not to loose the septum,
insert, or PCOC insert spring which
are installed under the injection
assembly.
HEATER/SENSOR
CABLE ASSEMBLY
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LID SHAFT
AUTO
INJECTION
ASSEMBLY
SEPTUM
INSERT
PCOC INSERT
SPRING
AIR DEFLECTOR
SCREW
SVC 5- 25
INJECTION PORT COVER
OPTIONAL
MANUAL
INJECTION
ASSEMBLY
DUCKBILL
SEPTUM
WELDMENT
INSULATION
CAVITY
SLEEVE
TOP COVER
PRESS
HERE TO
FREE
COVER
1/4- INCH
SCREW
AND
WASHER