Routine Service And Repair; Crank Gear And Lubrication; Check Valves - Bertolini LIGHT DUTY Serie Manual Del Usuario

8.1 Crank gear and lubrication

 Check at least once a week the oil level using the proper dipstick.
 After 50-100 hours of operation it is necessary to change the oil with a regular transmission oil
SAE 30, enriched by the specific additive supplied by Idromeccanica Bertolini. As to the
additive percentage refer to the instructions included in the package. This change assures an
efficient lubrication for the rest of that pump's life.
 If the pump is used in humid climates or environments, the water in the air normally tends
to condense and to mix with the pump oil, which takes on a typical whitish colour. In this
case it is necessary to check the oil more frequently, and if water was found immediately
change it.
 When water is in the oil immediately check the origin and replace respective seals. Before
changing oil, accurately wash crankcase, shaft, bearings and connecting rods.
CAUTION: Operating pump with emulsified oil (with water, condensation etc.), reduces the lubrication
of the moving parts, and will result in overheating and premature failures.
Protect the environment from liquids contained in the pump.
Collect the residues and dispose of them regularly; no residue must get into the
piping system or into the ground.

8.2 Check Valves

Pump C53.2
Disassembly
Picture 1
Access the check valve assemblies removing the pump head by the 8 M10 Allen screws (picture 1).
4. Take out the discharge valves and the relevant O-Rings from their seat in the crankcase, using
a pair of pliers (picture 2).
5. Take out the suction valves and the relevant O-Rings from their seat in the head, using a pair of
pliers (picture 3).
6. Check the housings bottom, on the head and on the crankcase, it must be absolutely smooth
and with no flutings or wear marks.

8- ROUTINE SERVICE AND REPAIR

Picture 2
52
Picture 3