EN – 15
ENMaintenance
Reassembling the pump
• All surfaces in contact are coated with oil (rotors, vanes...).
• Check that the lubrication holes are not blocked.
• Observe the nominal clamping torques for the reassembly of the functional
block (see chapter “Nomenclature”).
• Rest the frame (42) on a flat surface in order to raise the pump.
Component
preparation
Reassembling the
pumping module
with flanged stator
(see page N – 10)
1 Place the BP stator (26) on the
frame (42).
If there is no centering pin, align the
top of the stator with the exhaust
notch in the housing.
2 For not damage the shaft seal, use
protective sleeve on the rotor axis (or
wrap end of shaft with adhesive tape)
and oil it.
3 Slide the BP rotor (23) equipped with
its vanes and springs (rounded edges
facing outwards) in the BP stator (26).
Remove the protective sleeve.
4 Place the HP stator (34) on the BP
stator (26).
5 Slide the HP rotor (31) equipped with
its vanes and springs (rounded edges
facing outwards) in the HP stator (34).
6 Place the rear flange (7) on the HP
stator (34).
Sleeve
26
23
31
34
7
26
2 stages models: steps 1 to à 6
1 stage models:
steps 1, 2, 3 and 6
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