Badger Meter Portable Hydraulic Testers - Manual (Page 12)

Control Valve, Cylinder and Hydraulic Motor Test
TANK
OPEN LOAD VALVE BEFORE STARTING MACHINERY.
INDICATES DISPLAY OVER RANGE.
DO NOT STAND IN FRONT OF PRESSURE RELIEF DISK VENT.
Flo-check
PFM BD
by HEDLAND RACINE, WI. USA
FLOW TEMP
O FF
CONTROL
VALVE
TEE
PUMP
RELIEF
VALVE
Flo-check
PFM BD
HYDRAULIC
MOTOR
OUT
IN / OUT
Figure 8: Control valve, cylinder and hydraulic motor test (PFM6BD)
1 . Put one control valve in an operating position . Only one control valve should be in an operating position at any one time .
2 . Slowly close the tester loading valve to achieve the pressure obtained in step 3 of
“Pump Test” on page 10 or Step 1c .
“Tee Test” on page 11 and record the flow . Repeat for all operating positions of all control valves .
a . If all components are in good operating condition, pressure and flow measurements should be the same as in Step 3 of
the “Pump Test” on page 10 .
b . If a decrease in flow in any control valve position is noted, leakage is indicated . See Step 3 below for the test routine to
determine which control valve is at fault .
c . If the decrease in flow is the same with the control valve in all positions, it indicates that the relief valve is at fault .
OTEE: N This can also indicate some other leak is present in the control valve such as a defective casting, damaged seals, or
worn valve position detents, but always check the relief valve first .
3 . To locate the fault in the control valve, cylinder or motor, disconnect cylinder and plug connection .
a . Place the control valve handle in the position where the greatest decrease of flow was noted .
b . Close the tester loading valve to achieve the test pressure and record the flow .
c . If the same decrease in flow is noted as in test performed in Step 2b above, then the control valve is at fault . However,
if the flow readings are now higher and comparable to the other control valves, then a faulty cylinder or motor
is indicated .
Relief Valve in Separate Housing
1 . Install the tester in a Tee Test configuration to the line connecting the pump and relief valve . Plug any extra outlets .
2 . Close the tester loading valve and watch the pressure and flow .
a . Reconnect the control valve to the tee . Put a control valve into a power output mode with the output flow blocked,
such as a cylinder at the end of its stroke .
b . Close the tester loading valve while watching the pressure . Pressure will increase until the relief valve opens . Record
the pressure at this point . Repeat to check the relief valve adjustment .
Test procedures
Page 12 August 2014 TUR-UM-00730-EN-02