Tokheim TQM - Piston Meter Operation

Page 2-6 Document Ref 942175-001 Rev 3
TQM for Fuel Dispensers Component Technical Manual
KEY:-
1 = Crank Housing
2 = Adjustable Front Stop
3 = Control Valve
4 = Piston
5 = Crankshaft
6 = Gear
2.4 Piston Meter Operation
The following phases of the piston meter can be identified as shown in the following
diagram:-
PHASE 1
A
B
C
D
B
D
C
A
A
BD
C
A
C
D
B
Inlet/fuel entry
Outlet/fuel exit
4
5
6
PHASE 2
PHASE 3 PHASE 4
Outlet/
fuel exit
Outlet/fuel exit
Outlet/fuel exit
Inlet/fuel entry
Inlet/fuel entry
Inlet/fuel entry
3
2
1