8
Parker Hannifin
Pump and Motor Division
Trollhättan, Sweden
Service Manual
Series F02
HY30-5519-M1/UK
Checking and Replacement
Clean all parts when the pump has been disassemb-
led. Check carefully for wear and damage. Replace all
gaskets and seal rings.
If the oil flow from the F2 pump is less than normal,
the following parts are likely to be worn:
- The surface facing the cylinder barrel on the
end cap.
- The end surface of the cylinder barrel.
- The piston rings
Scores and marks on these parts will always decrease
the performance of the pump. Always replace them by
new parts, when necessary.
The laminated piston rings should always be replaced
at a major overhaul (due to fatigue), and if the play
between piston and new rings is more than 0,2 mm
also the piston should be replaced.
Ma
x
0,
2
mm
