Occasional Maintenance; Lifting And Removing The Pump; Pump Valves And Diaphragms Renewal - Hardi NAVIGATOR DELTA FORCE Instruction Book

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6 - Maintenance

Occasional Maintenance

General Info
The maintenance and service intervals for the following components will depend very much on the conditions, under
which the sprayer is operated, and therefore it is almost impossible to specify the intervals.

Lifting and Removing the Pump

When lifting and removing the pump, use a shackle fitted to the built-in
lifting eye located between the heads (A).
±
WARNING! To prevent damages in case of a free-falling pump, use
lifting gear and a steel shackle with at least 3.5 tonnes max. tensile
strength.
÷
NOTE! Pump weight is approximately 75 kg.

Pump Valves and Diaphragms Renewal

Pump model: 363.
Diaphragm pump overhaul kit (valves, seals, diaphragms etc.) can be
ordered. Detect the pump model - the overhaul kit can be ordered by
your local dealer.
Model 363: Item no. 75073700.
Valves
Remove valve cover (1) before changing the valves (2) - note their
orientation, so that they are replaced correctly!
μ
ATTENTION! A special valve with white flap (2A) is used at the two
upper side inlets. It has to be placed in the valve openings as
shown. All others are the type with black flap. It is recommended
to use new gaskets (3), when changing or checking the valves.
Diaphragms
Remove the diaphragm cover (4). The diaphragm (5) may then be
changed. If fluids have reached the crankcase, re-grease the pump
thoroughly. Also check that the drain hole at the bottom of the pump is
not blocked.
Reassemble the pump with the following torque setting.
Diaphragm cover: 90 Nm.
Diaphragm bolt: 90 Nm.
μ
ATTENTION! Before tightening the 4 bolts for the diaphragm
cover (B), the diaphragm must be positioned between centre
and top to ensure correct sealing between diaphragm pump housing and diaphragm cover. Turn the crank shaft if
necessary.
128

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