Variable piston pump leakage mainly has the following reasons:
(1) Spindle oil seal damage or shaft defects, scratches;
(2) Internal leakage is too large, causing the pressure at the oil seal to increase, damaging or flushing the oil seal;
(3) If the drain pipe is too long, it will leak at the seal;
(4) The outer tubing of the pump is loose, the tubing joint is damaged, and the gasket is aged or cracked;
(5) The loose bolt of the variable adjusting mechanism breaks the seal;
(6) Cast iron pump casing has bad eyes or bad welding.
(1) Spindle oil seal damage or shaft defects, scratches;
(2) Internal leakage is too large, causing the pressure at the oil seal to increase, damaging or flushing the oil seal;
(3) If the drain pipe is too long, it will leak at the seal;
(4) The outer tubing of the pump is loose, the tubing joint is damaged, and the gasket is aged or cracked;
(5) The loose bolt of the variable adjusting mechanism breaks the seal;
(6) Cast iron pump casing has bad eyes or bad welding.
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