Interpump Group Pratissoli EV-E4 Serie Manual De Reparación página 16

- Mount the rear cover complete with the O-ring,
positioning the dipstick hole upward.
- Insert oil in the casing as indicated in the Use and
maintenance manual.
2.1.3 Disassembly / Reassembly of bearings and shims
The type of bearings (taper roller) ensures the absence of
axial clearance on the bend shaft. The shims are defined to
meet this necessity. For disassembly / reassembly and for any
replacements, carefully observe the following directions:
A) Disassembly / Reassembly of the bend shaft without
replacement of the bearings
After having removed the side covers as indicated in par. 2.1.1,
check the conditions of the rollers and their relative tracks. If
all parts are in good condition, clean the components carefully
with a degreaser and redistribute lubricant oil uniformly.
The previous shims can be reused, taking care to insert them
only under the indicator side cover.
Once the complete unit is mounted (Indicator side flange
+ shaft + motor side flange), check that the rotation torque of
the shaft - with the con-rod disconnected - is a between 4 Nm
and 6 Nm.
To transition the two side covers closer to the casing, it is
possible to use 3 M6x40 screws for the first positioning phase,
as already indicated above Fig. 8/a, and the screws provided
for final fastening.
Shaft rotation torque (with the con-rod 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.
Fig. 11/b
Fig. 11/c
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° - 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.
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Fig. 12
Fig. 12/a
Fig. 13