Pump; Construction - Alto Neptune 5 Service Manual

The four piston axial pump C3 used in the Neptune 7 models is a compact unit with motor and
pump built together in line (axial).
Fan
Stator
The three piston radial pump NP5 used in the Neptune 5 models is a compact unit with motor and

pump.

Crankshaft
Motor
Motor shaft
Neptune_GB_Ver.2.0_10/03

Construction

Rotor Wobble disc
Oil
A
Piston
Oil
Piston
Out
Pressure valve
In
Suction valve
3.
Pump 7 / 5
Out
Pressure
valve
In
Suction
valve
15.