Kubota WSM B2050 Workshop Manual page 374

B2050, B2350, B2650, B3150, WSM
Hydraulic Pump Test (For 3-Point Hitch)
NOTE
• Before pump testing, do the "Test Preparation".
1. Open the flowmeter
counterclockwise.
2. Start the engine and set at approx. 2500 min
3. Read and note the pump delivery at no pressure.
4. Slowly close the loading valve to increase the pressure to the
rated pressure as shown in the table below.
5. Read and note the pump delivery at rated pressure.
6. Open the loading valve and stop the engine.
7. If the pump delivery does not reach the allowable limit, check
the pump suction line, oil filter or hydraulic pump.
(Reference)
Hydraulic pump delivery
Factory specification
at no pressure
Factory specification
Hydraulic pump delivery
at rated pressure
Allowable limit
Condition
[Manual Transmission Model]
• Engine rated speed
-1
2500 min (rpm)
• Rated pressure
15.5 to 16.5 MPa
2
158 to 168 kgf/cm
2248 to 2390 psi
• Oil temperature
50 °C (122 °F)
[HST Model]
• Engine rated speed
-1
2500 min (rpm)
• Rated pressure
16.5 to 16.9 MPa
2
169 to 172 kgf/cm
2400 to 2450 psi
• Oil temperature
50 °C (122 °F)
8-S7
HYDRAULIC SYSTEM
loading valve completely
-1
(rpm).
Above
18.7 L/min.
4.94 U.S. gals/min.
4.11 Imp. gals/min.
Above
18.3 L/min.
4.83 U.S. gals/min.
4.03 Imp. gals/min.
Above
15.3 L/min.
4.04 U.S. gals/min.
3.37 Imp. gals/min.
9Y1210982HYS0005US0
KiSC issued 03, 2014 A
(Turn