Interpump Group SS70 Reparaturanleitung Seite 18

To transition the two side covers closer to the casing, it is
possible to use 3 M6x40 screws for the first positioning
phase, as indicated above, and the screws provided for final
fastening.
The shaft rotation torque (with the con-rods connected)
should not exceed 8 Nm.
B) Disassembly / Reassembly of the bend shaft with
replacement of the bearings
After removing the side covers, as described above, remove
the outer ring nut on the bearings from its seat on the covers,
using an appropriate extractor as shown in Fig. 12 and
Fig. 12/a.
Remove the inner ring nut on the bearings from the two
ends of the shaft, again using an appropriate extractor or,
alternatively, a simple "pin punch" as shown in Fig. 13.
The new bearings can be mounted cold with a press or rocker,
supporting it on the lateral surface of the ring nuts involved
in press fitting with the rings. The fitting operation could be
facilitated by heating the parts involved at a temperature
between 120° and 150 °C (250° - 300 °F), making sure that the
ring nuts are fully fitted in their respective seats.
Never exchange the parts of the two bearings.
Determining the shim pack:
Perform the operation while the piston/con-rod guide units
are assembled, the con-rod caps are disconnected and the
con-rods are pushed downwards. Insert the pump shaft
without tab into the casing, making sure the PTO shank comes
Fig. 12
out of the correct side.
Secure the PTO side flange to the casing, taking care with the
lip seal as described previously and tighten the fixing screws
to the recommended torque.
Then feed the flange on the indicator side without shims in
the carter and start to move it closer, manually screwing the
M6x40 service screws in equally, with small rotations such as
to move the cover in slowly and correctly.
At the same time, check that the shaft rotates freely by turning
it manually.
Continuing the procedure in this way, a sudden increase in
hardness during shaft rotation will soon be experienced.
At this point, halt the forward movement of the cover and
loosen the fixing screws completely.
With the aid of a feeler gauge, measure the clearance between
the side cover and pump casing (see Fig. 14).
Fig. 12/a
18
Fig. 13
Fig. 14