General Pump HTCK4050S - Manual (Page 13)

GENERAL PUMP
A member of the Interpump Group
HTCK4050S
To reassemble the various components, follow the reverse operations listed above as described in point
2.2.1. To facilitate insertion of the valve guide in its housing, you can use a brush resting on the horizontal
guide planes and use a hammer acting on the whole circumference (figs. 19 and 20).
Do not invert the suction springs with the previously disassembled outlet springs during
assembly of the suction and outlet units (figs. 15 and 16).
a) “White” suction spring
b)”Black” outlet spring
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Insert the suction and outlet valve units, checking that they are down to end stroke in the head
housing. Then apply the valve covers and calibrate the respective M12x35 screws using a
torque wrench at the required tightening torque.
2.2.3 DISMANTLING THE HEAD - SEALS
Replacement of the seals is necessary from the moment you begin to detect water leaks from the drainage
holes provided on the back of the pump casing, and at the intervals indicated in the “Preventive Maintenance”
section on the specification sheet.
A) Unscrew the M12x150 head fixing screws as indicated in fig. 21.
Ref 300934 Rev.A
09-13