Dismantling The Piston Unit; Reassembling The Head - Seals - Piston Unit - Interpump Group Pratissoli KF Serie Reparaturanleitung

C) Extract the high pressure seals from the head and the low
pressure ones from the support, using simple tools as
indicated in Fig. 21, pos. …, being careful not to damage
the respective housings.
Pay attention to the order of seal pack
disassembly as indicated in Fig. 22 composed of:
1. Head ring
2. HP seal
3. Restop ring
4. Seal support
5. LP seal
6. Seal ring
7. Circlip
8. O-ring
All manuals and user guides at all-guides.com
2.2.4
The piston unit does not require any routine maintenance.
Maintenance is limited to visual checks only.
Proceed as follows to extract piston units:
A) Unscrew the piston fixing screws as indicated in Fig. 23.
Fig. 21
B) Check and verify their conditions, replace if necessary.
2.2.5
To reassemble the various components, perform the
operations listed above in reverse order to par. 2.2.3, taking
particular care with the following:
A) Seals pack: respect the same order used during
B) Lubricate components 2, 3 and 5 with OCILIS silicone
C) For correct assembly of HP seals in their seats on the head
D) Remount the pistons, tightening the screws with a
E) Assembling the head: for the values of the torques and
Fig. 22
22

Dismantling the piston unit

At every disassembly, all O-rings on the piston
unit must be replaced.

Reassembling the head - seals - piston unit

disassembly operations.
grease code 12001600. This operation is also deemed
necessary to facilitate adjustment of the lip seal on the
piston.
without causing any damage to lip seals, use suitable
tools according to the pump diameters as indicated in
chapter 5.
torque wrench, respecting the tightening torque value as
indicated in chapter 3.
tightening sequences follow the instructions contained in
chapter 3.
Fig. 23