Hardi Mercury Series, Инструкция

Страница: 95 / 114

6 - Maintenance
95
364/464 Pump Valves and Diaphragms Renewal
1.
Lift off the plastic covers (C) with your hands (A) by pulling with
the finger tips while pushing with the thumbs in the centre, as
shown in (B).
Valves
2.
Loosen the 4 head bolts (1).
3.
Remove the head (2).
4.
Change the valves (3) - note their orientation, so that they are
replaced correctly!
μ
ATTENTION! It is recommended to use new gaskets (4), when
changing or checking the valves.
Diaphragms
5.
Loosen the diaphragm bolt (5).
6.
Remove the diaphragm washer (6).
7.
The diaphragm (7) may then be changed.
8.
Check that the drain hole (8) at the bottom of the pump is not
blocked.
9.
Apply a small amount of pump grease on the underside of the
diaphragms (between diaphragm and conrod washer).
10.
Reassemble the pump with the following torque setting.
•
Diaphragm head bolts (1): 90 Nm.
•
Diaphragm bolt (5): 90 Nm.
11.
Refit the plastic covers (C).
÷
NOTE! The diaphragm bolt on 1000 r.p.m. pumps must be
secured with locking compound.
μ
ATTENTION! Before tightening the 4 bolts for the head (2), 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.
C
C
1
2
3
3
3
4
4
5
6
7
8