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20901106_EN_MD4_MV2_VARIO_select_V1.0_140818
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Lay the pump on its side. Support the pump appropriately.
+
Service only one side of the pump at a time to avoid the mixing of
parts.
A: Housing cover
B: O-rings
C: Valves
D: Head cover
E: Diaphragm clamping disc
with square head screw
F: Diaphragm
G: Diaphragm support disc
H: Washer
I: Connecting rod
J: Housing
K: Connecting tube with O-ring
View of the disassembled pump head parts
1
B
I
D
J
H
F
G
E
C
A
K
Pump head parts:
(fig.: MD 4 VARIO select)
Cleaning and inspecting the pump heads
