cashco DA6 Installatie-, bedienings- en onderhoudshandleiding - Pagina 6
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Figure 2: Body Sizes
1/2" – 1", Composition Di a phragm
e. Remove up per stem seal (14.1).
f.
Remove lower diaphragm push er plate
(10).
g. Remove middle stem seal (14.2).
h. Remove piston/guide bearing (13) with
dynamic side seal (27) in place.
i.
Remove lower stem seal (14.3).
j.
Place socket wrench on upper end of plug
(20) as in Step b. above. Ro tate plug (20)
CCW (viewed from above) to loosen seat
disc nut (30). Once nut (30) is loos ened,
re move partial as sem bly (20, 27, 28, 29,
30) from vise. Complete re mov al of seat
disc nut (30), seat disc washer (29) and
seat disc (28).
3. Examine the components (27.1, 27.2, 27.3,
27.4, 27.5, 27.6) of the dynamic side seal (27)
to determine if sig nif i cant leak age was oc cur-
ring. If the dynamic side seal (27) shows signs
of significant leakage, de ter mine if op er at ing
conditions are ex ceed ing pres sure, pres sure
drop, or temperature lim its.
6
1/2" – 1", Metal Diaphragm
Figure 5: Body Sizes
1-1/4" – 2", Metal Diaphragm
Figure 3: Body Sizes
Figure 6: Body Sizes
2-1/2" – 4", Composition Di a phragm
4. Solvent clean all metal parts to be reused.
D. Inspection of Parts:
1. After inspection, remove from the work area
2. Inspect the metal parts that will be reused. The
Figure 4: Body Sizes
1-1/4" – 2", Composition Diaphragm
Remove dynamic side seal (27) components
from plug (20) for sizes 1/2" – 2", or from pis-
ton/guide bearing (13) for sizes 2-1/2" – 4".
Special care should be tak en when using
"tools" to remove the com po nents to ensure
that no scratches are im part ed to any portion
of the plug (20) or piston/guide bearing (13)
groove.
and dis card the old "soft goods" parts (i.e.
o-rings, di a phragms, seals, etc.). Metal di a-
phragms should be replaced. These parts
MUST be re placed with fac to ry supplied new
parts.
parts should be free of surface con tam i nants,
burrs, oxides, and scale. Rework and clean
IOM-DA6