User Manual

３
３３
３
)
Valve assembly
Applicable model
Process
Disassembly １） Spanner
Nominal：
AW20K-B 11
AW30K-B 17
AW40K-B 21
２） Remove the valve spring.
３） Remove the valve assembly.
Assembly ４） Mount the valve assembly.
Mate the stem convex and the valve center hole.
５） Mount the valve spring.
Insert the valve spring to the valve hole
６） Mount the valve guide. Spanner
Nominal：
AW20K-B 11 AW20K-B 0.8±0.1N・m
AW30K-B 17 AW30K-B 2.35±0.3N・m
AW40K-B 21 AW40K-B 3.5±0.3N・m
Disassembly １） Remove the bowl assembly, housing, and element.
mounting screws to the left with a hexagon wrench
２） Remove the valve guide.
３） Remove the valve spring.
４） Remove the valve assembly.
Assembly ５） Mount the valve assembly.
Mate the stem convex and the valve center hole.
６） Mount the valve spring.
Insert the valve spring to the valve hole.
７）
Mount the valve guide.
－
－
－
Hold the valve guide with a spanner to rotate it
clockwise and mount the valve guide. See check
item for the tightening torque.
－
Procedure
Check item
－ －
Tools
Remove valve guide after removing bowl
assembly and element.
－
AW60K-B
Hexagon
wrench key
－
－
Hold the valve guide with a spanner to rotate it
couterclockwise and remove the valve guide.
－ －
Positioning the stem
and the
valve(centering)
－
Hold the valve guide with a spanner to rotate it
couterclockwise and remove the valve guide.
AW20K-B
AW30K-B
AW40K-B
－
Tightening torque：
Spanner
Nominal：30
－
Positioning the stem
and the
valve(centering)
－
－
７）
Mount the valve guide.
８） Mount the housing.
Nominal：30
Spanner
Mount an "O"ring on the body, assemble the
housing, and tighten the 4 mounting screws
temporary. Tighten the screws additionally and
evenly with the tightening torque shown on the
right using the hexagon wrench key.
Hexagon
wrench key
Nominal：5
Tightening torque：
4.5±1.0N・ｍ
Tightening torque：
6.5±0.3N・ｍ
Hold the valve guide with a spanner to rotate it
clockwise and mount the valve guide. See check
item for the tightening torque.
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