10-2. Valve Guide Assembly and Valve Assembly Replacement
Applicable
model
Work
category
Tool
Criteria
1)
Remove the cap.
Insert a precision screwdriver (-) between the
body and cap to lift the cap.
Precision
screwdriver (-)
－
2)
Remove the cover.
Insert round pliers into the small holes of the
cover and rotate 45 degree to the left or right,
then lift the cover to remove.
Round pliers
Nominal: 125
－
3)
Remove the valve guide assembly.
Remove it while lifting the circumferential part
with a precision screwdriver.
Precision
screwdriver (-)
－
4)
Remove the valve spring.
－
－
5)
Remove the valve assembly.
－
－
Assembly
6)
After replacing the removed components with
new components, place them into the regulator.
Assemble the components in reverse order to
the removal procedure.
－
(See below for the mounting
direction of the components.)
A：
①バルブアセンブリ（上下反転図）→⑦バルブアセンブリ（上下反転図）
-17-
AR20
AR30
AR40
AR50
AR60
Procedure
Disassembly
Cap
Cover
(9)
Valve guide assembly
Valve spring
(7)
Valve assemby
Regulator
Precision
screwdriver (-)
inlet
Cap
Round pliers inlet
(4 holes)
I N
I N
OU
T
(
Valve seat
)
（
Valve sliding O-ring
）
(7) Valve assembly (upside down)
AR40-D/ AR50-D/ AR60-D
Mount the cover so
that the protruded
part faces towards the cap.
