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NT 1004-H00 10 16 SLS24 i - SLS36 i e
• Hold the piston
301
with a 85 Open-end spanner or a mon-
key wrench and unscrew the nut
304
and its seal
305
.
• To make handling of the cylinder/piston unit easier, move
the lifting ring from the transmission body to the cylinder
.
• Screw the lifting hook in the tapped hole of the cylinder,
provided for this purpose and tighten the screw in the
location of the lifting ring.
• With the help of a hub puller, extract the piston
301
.
• Remove the cylinder
201
and the seals
113
and
306
.
6.2 Checking of parts
The piston
301
and the cylinder
201
are active parts
(wearing parts).on which the pump's efficiency directly
depends. It is therefore advisable to regularly check the
pump's efficiency and replace the cylinder / piston if it
decreases.
In addition, as using a cylinder / piston that is too worn
may damage the pump's transmission system, it is advi-
sable to replace the cylinder / piston if the maximum
acceptable wear dimensions defined in the table below
are reached.
As changes in the pump's efficiency depend on the
conditions of use (pressure, rotation speed, liquid pum-
ped, etc.), MOUVEX recommends that users define the
monitoring ranges and the preventive maintenance
schedule according to their own experience.
When controlling the piston and even if it has not reached
its minimum dimensions, it may show following aspects,
especially on abrasive liquid pumping or low viscosity :
• Triangular shape on top of piston wall (A),
• Small steps at piston wall base (B).
Piston
301
mm
(inch)
Cylinder
201
mm
(inch)
SLS24
New dimension
11
(0,433)
69
(2,717)
Minimum wear dimension
acceptable
8
(0,315)
66
(2,598)
SLS36
New dimension
11
(0,433)
97,5
(3,839)
Minimum wear dimension
acceptable
8
(0,315)
94,5
(3,720)
301
201
It is important to keep a good grip on the
piston, its rotation could lead to deterioration
of the bellows.
6. OPENING OF THE PUMP (continued)
