Sauer 41013675 - Page 48

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Fig. 18: Pneumatic drain valve
1 Housing cover
2 Socket head cap screw
3 Valve body
4 Valve piston
5 O-ring
6 Housing flange
7 Spring
8 O-ring
9 Gasket
10 O-ring
1. Disconnect all pipelines from the pneumatic drain valve.
2. Remove the pneumatic drain valve.
3. Unscrew the socket head cap screws on the housing flange and
remove the housing flange. Replace the O-rings. Check the surface of
the valve seat on the housing flange.
4. Unscrew the socket head cap screws on the housing cover and
remove the housing cover from the valve body. Replace the O-rings.
5. Screw the M 6 screw into the thread on the valve piston and remove
the valve piston from the valve body. Replace the o-rings and ring gas-
kets.
6. Check the surface of the valve seat at the base of the valve piston for
damage, clean and lubricate. Replace damaged valve pistons.
7. Lubricate the valve piston and insert in the valve body.
8. Fit the top housing cover on the valve body with socket head cap
screws and new ring gaskets.
9. Fit the lower housing flange on the valve body with socket head cap
screws and new o-rings.
10. Reinstall the pneumatic drain valve.
48 | WP5000 Basic WA 41013675 en GB 20190916