Assembling The Head - Liners - Valves; Disassembly Of The Piston Unit - Supports - Seals - Interpump Group Pratissoli SM Serie Manual De Reparación

2.2.2

Assembling the head - liners - valves

To reassemble the various components, follow the reverse
operations listed above, taking particular care when
assembling the liner spacer: the hole Ø6 (seal cooling circuit)
must correspond to the same hole for the head (with O-ring).
Heads - liners: proceed with assembly and head screw
calibration, and then continue with the calibration of the
liner fastening screws.
For the values of the screw tightening torques and sequences,
follow the instructions contained in chapter 3.
2.2.3 Disassembly of the piston unit – supports – seals
The piston unit does not require any routine maintenance.
Service operations are limited to the visual inspection of the
cooling circuit's draining. In case of anomalies / oscillations
on the delivery pressure gauge, or pulsating of the cooling
circuit's draining pipe (if flexible), seal packings must be
inspected and replaced if necessary.
Proceed as follows to remove the piston units:
Separate the head and the spacer for the liners from the pump
casing as shown in par. 2.2.1 (from Fig. 94 to Fig. 100).
Remove the upper inspection cover, unscrewing the 2 fixing
screws (pos. , Fig. 107).
Remove the pumping elements with a fork spanner (pos. ,
Fig. 108) and check their state of wear (pos. , Fig. 109).
Replace them if necessary.
Fig. 106
Remove the M8x50 head liner fixing screws (pos. , Fig. 110)
and separate the support from the liner (pos. , Fig. 111).
Fig. 107
50
Fig. 108
Fig. 109
Fig. 110