Bertolini 74.1030.97.3, Руководство по эксплуатации, техническому обслуживанию и ремонту

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10.4 B) Delivery valves
•
Remove the valve housings from the head. Certain models have a thread in the
central hole of the valve housing. If this is the case, screw in an M8 bolt to facilitate
the removal operations. In models without this thread, insert a plug and release the
valve housings by applying lateral movements;
•
Remove the plates, springs, valve spacers and valve guides from the head (keep the
components of the three pumping elements separate, if the used parts are going to
be re-assembled).
–
Inspect the contact surfaces between plate and valve housings. Replace the
components if they are excessively worn.
–
Assess the clearance between the plate stem and plate guide. Replace the
components if there is too much play.
Valve
Plate
Spring
Valve spacer
Plate guide