6 - Maintenance85Occasional MaintenanceGeneral InfoThe maintenance and service intervals for the following components will depend very much on the conditions, underwhich the sprayer is operated, and therefore it is almost impossible to specify the intervals.Pump Valves and Diaphragms RenewalPump model: 363 and 463.Diaphragm pump overhaul kit (valves, seals,diaphragms etc.) can be ordered. Detect the pump model - the overhaulkit can be ordered by your local dealer.Model 363: Item no. 75073700Model 463: Item no. 75073900ValvesRemove valve cover (1) before changing the valves (2) - note theirorientation, so that they are replaced correctly!μ ATTENTION! A special valve with white flap (2A) is used at the twoupper side inlets. It has to be placed in the valve openings asshown. All others are the type with black flap. It is recommendedto use new gaskets (3), when changing or checking the valves.DiaphragmsRemove the diaphragm cover (4). The diaphragm (5) may then bechanged. If fluids have reached the crankcase, re-grease the pumpthoroughly. Also check that the drain hole at the bottom of the pump isnot 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 diaphragmcover (B), the diaphragm must be positioned between centreand top to ensure correct sealing between diaphragm pumphousing and diaphragm cover. Turn the crank shaft if necessary.
