6 - Maintenance
95
Pump Valves and Diaphragms Renewal
Valves
A.
Loosen the 2 valve cover bolts (1).
B.
Remove valve cover (2).
μ
ATTENTION! For 1303 pump only: Bolts (1) on centre valve cover
are shorter than the other valve cover bolts!
C.
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
A.
Loosen the 4 head bolts (10).
B.
Remove the head (9).
C.
Loosen the diaphragm bolt (8).
D.
Remove the diaphragm washer (7) and the plastic disc (6).
E.
The diaphragm (5) may then be changed. Note the orientation of the new diaphragm. The side that need to be faced
into the pump has written “DOWNWARD” close to diaphragm centre.
F.
Check that the drain hole at the bottom of the pump is not blocked.
G.
Apply a small amount of pump grease on the underside of the diaphragms (between diaphragm and conrod washer).
H.
Reassemble pump with the following torque setting:
μ
ATTENTION! Before tightening the 4 bolts for the head (9), 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.
Lubrication After Assembly
After disassembling the pump (diaphragm renewal, etc.), the pump
MUST be lubricated into each lubrication point with:
•
Model 603: 60 g.
•
Model 1203: 90 g.
•
Model 1303: 3x 35 g.
HARDI pump grease cartridge (400g): HARDI item no. 28164600
Overhaul Kit
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 603: HARDI item no. 750656.
•
Model 1203: HARDI item no. 750657.
•
Model 1303: HARDI item no. 750658.
Valve
Diaphragm
Diaphragm
Pump Model
cover
cover
bolt
603
50 Nm
50 Nm
25 Nm
1203
80 Nm
80 Nm
80 Nm
1303
80 Nm
80 Nm
80 Nm
Summary of Contents for NK MB Series
Page 8: ...1 Identification 8 ...
Page 52: ...3 Description 52 ...
Page 62: ...4 Sprayer Setup 62 ...
Page 84: ...5 Operation 84 ...
Page 87: ...6 Maintenance 87 Boom Lubrication Oiling Plan Lift Lubrication Oiling Plan ...
Page 116: ...9 EC Declaration 116 ...
Page 120: ...Index 120 ...
Page 122: ...HARDI INTERNATIONAL A S Helgeshøj Allé 38 DK 2630 Taastrup DENMARK ...