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4. Maintenance and Repair
To Check Valves:
Discharge Valves:
Screw out hexagon screws (59) and remove valve casing (54). Pull seal case (46) out of valve casing (54.) Pull valve body (50)
and seal case (46) apart.
Using pliers, pull spring guide (55) out of the valve casing. Remove discharge valve plate (57) together with spring (56) from
spring guide. (55.)
Check sealing surfaces of the valve body (50) and discharge valve plate (57.)
Check discharge valve spring (56) and border seal ring (53) and replace where necessary.
Important! A damaged border seal ring (53) must be replaced before reassembling.
Inlet Valves
Remove inlet valve spring (48) with valve plate (49) from seal case (46.) Check sealing surfaces of the valve plate (49) and
valve body (50).
Check O-rings (47), (51) and support ring (52) before reassemble.
Worn parts must be replaced.