Kubota B1220 Workshop Manual page 263

B1220, B1620, B1820, WSM
Pump Test
NOTE
• Before pump testing, perform the flowmeter connecting
and test preparation.
1. Open the loading valve completely.
2. Start the engine and set at approx. 3100 min
B1220]
3. Start the engine and set at approx. 2800 min
B1220]
4. Read and note the pump delivery at no pressure.
5. Slowly close the loading valve to increase pressure approx.
2
9.4 MPa (96 kgf/cm , 1400 psi). [Only B1220]
6. Slowly close the loading valve to increase pressure approx.
11.5 MPa (117 kgf/cm
7. Read and note the pump flow at rated pressure.
8. Open the loading valve and stop the engine.
(Reference)
Hydraulic pump Factory
delivery at no specifica-
pressure tion
Condition
[B1220]
• Engine speed
-1
Approx. 3100 min (rpm)
• Rated pressure
2
9.4 MPa (96 kgf/cm , 1400 psi)
• Oil temperature
50 °C (122 °F)
[B1620 and B1820]
• Engine speed
-1
Approx. 2800 min (rpm)
• Rated pressure
11.5 MPa (117 kgf/cm
• Oil temperature
50 °C (122 °F)
8-S6
HYDRAULIC SYSTEM
-1
2
, 1670 psi). [Except B1220]
Above
8.4 L/min.
B1220
2.2 U.S.gals/min.
1.8 Imp.gals/min.
B1620 and
Above
B1820
14.1 L/min.
(Manual
3.72 U.S.gals/min.
steering
3.10 Imp.gals/min.
model)
Above
B1820 (Power
13.1 L/min.
steering
3.46 U.S.gals/min.
model)
2.88 Imp.gals/min.
2
, 1670 psi)
9Y1210272HYS0006US0
-1
(rpm). [Only
(rpm). [Except
(EU)
KiSC issued 07, 2011 A