39
B_04218
3
5
4
3
B_04219
6
6
B_04220
7
7
OPERATING MANUAL
VERSION 01/2013 ORDER NUMBER DOC 2335747
e) Clamp the end of the shaft released from the diaphragm in a bench vice (with soft
jaws to avoid damaging it). Dismount the central nut from the opposite end of the
shaft. Remove the second diaphragm.
f) Remove the inner diaphragm cover (3).
g) Remove the shaft (4) from the motor block.
h) Dismount the fast discharge valves (5), then remove their gaskets.
i) Clean all parts and check their condition. Replace defective parts.
j) Check the internal cylindrical area of the motor. It must be clean and smooth (without
any scratches).
k) Check the sliding shoes (6; two halves) for wear and replace if necessary.
l) Check the two vent screws (7) on the motor block. Their passages must not be clogged.
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