Introduction; Description Of Symbols; Repair Guidelines; Repairing Mechanical Parts - Pratissoli HF Serie Manual De Reparación

1

INTRODUCTION

This manual describes the instructions for repairing HF series
pumps and should be carefully read and understood before
any intervention on the pump.
Proper pump operation and duration depend on the correct
use and maintenance.
Interpump Group disclaims any responsibility for damage
caused by negligence or failure to observe the standards
described in this manual.
1.1

DESCRIPTION OF SYMBOLS

Read the contents of this manual carefully before each
operation.
Warning Sign
Read the contents of this manual carefully before
each operation.
Danger Sign
Wear protective goggles.
Danger Sign
Put on protective gloves before each operation.
2

REPAIR GUIDELINES

2.1

REPAIRING MECHANICAL PARTS

Mechanical parts must be repaired after the oil has been
removing from the casing.
To remove oil, you must remove: the oil dipstick, pos.  and
then the plug pos. , Fig. 1.
The used oil must be poured unto a suitable
container and consigned to an authorised
recycling centre.
Do not release used oil into the environment
under any circumstances.
2.1.1

Dismantling the mechanical part

The operations described must be performed after
removing the hydraulic part, ceramic pistons and splash
guards from the pump (par. 2.2.3, 2.2.4).
Remove in the following order:
- the pump shaft tab
- the rear cover
- the con-rod cap as follows: unscrew the cap fixing screws,
remove the con-rod caps with their lower half-bearings
(Fig. 2) paying attention to the numbered sequence during
disassembly.
To avoid possible errors, caps and con-rod shanks have been
numbered on one side (Fig. 2/a, pos. ).
- The side covers using - for extraction 3 fully threaded
M6x50 screws, inserting them in the threaded holes as
indicated in Fig. 3.
Fig. 1
15
Fig. 2
Fig. 2/a
Fig. 3