Repairing Hydraulic Parts; Dismantling The Head-Valve Units - Interpump Group Pratissoli KV Serie Manual De Reparación

Once the type and number of shims have been determined
using the table, check the following: assemble the shim pack
on the indicator side cover centering (Fig. 15), secure the cover
to the casing, following the procedure in par. 2.1.2, and tighten
the screws to their recommended torque.
Check that the shaft rotation stall torque is between 4 Nm and
6 Nm.
If this torque is correct, connect the con-rods to the bend
shaft and to the next stages. If it is not, redefine the shim pack,
repeating the operations.
2.2

REPAIRING HYDRAULIC PARTS

2.2.1

Dismantling the head-valve units

The head does not require any routine maintenance.
Operations are limited to inspection or replacement of valves,
if necessary.
Proceed as follows to extract the valve units:
- Loosen but do not remove the M6x75 screws
fastening the liners to the head, as shown in
Fig. 16, so as to free them.
Fig. 15
- Unscrew the M10x210 head fixing screws No. 1 and No. 2
as shown in Fig. 17 replacing them with two service pin-
screws (code 27840000) as shown in Fig. 18. Then take out
the remaining screws.
Fig. 16
22
1
2
Fig. 17
Fig. 18
Fig. 19