Disassembly and Replacement Procedures
DISASSEMBL
Y
AND REPLACEMENT
121
(3) Remove the pipes and the mass flow valve.
Remove the two double sems screws (M3 x 8) with
a Phillips screwdriver.
Double sems
screw (M3x8)
(4) Reassembly: Reassemble in the reverse order of dis-
assembly.
6-3-22. Replacing the Solenoid Valve
(1) Remove the oxygen controller assembly.
See (1) ~ (4) in “6-3-20. Replacing the Oxygen Con-
troller Assembly.”
(2) Remove the cover.
Remove the two double sems screws (M3 x 8) with
a Phillips screwdriver.
Double sems screw (M3x8)
(3) Remove the pipes and the solenoid valve.
The solenoid valve q is an NC (normally closed)
type and the solenoid valve w is an NO (normally
open) type, as shown in the figure on the right.
Remove the two double sems screws (M4 x 8) of
each solenoid valve with a Phillips screwdriver.
qNC solenoidvalve
wNO solenoid valve
(4) Reassembly: Reassemble in the reverse order of dis-
assembly.