STEERING
B1220, B1620, B1820, WSM
7-S9
(EU)
(3) Hydraulic Pump for Power Steering
Flowmeter Connecting and Test Preparation
• When using a flowmeter other than KUBOTA specified
flowmeter (Code No. 07916-52792), be sure to use the
instructions with that flowmeter.
• In this hook-up, there is no relief valve. Therefore while
testing, do not close the flowmeter loading valve
completely.
1. Remove the steering wheel, meter panel and panel under
cover.
2. Remove the power steering delivery pipe.
3. Set the adaptor 66 (2) to the hydraulic pump (3).
4. Connect the hydraulic test hose (1) (Code No. 07916-52651) to
the adaptor 66 and flowmeter (Code No. 07916-52791) inlet
port.
5. Connect the another hydraulic test hose (4) to flowmeter outlet
port and transmission oil filling port.
6. Open the flowmeter loading valve completely. (Turn
counterclockwise).
7. Start the engine and set the engine speed at 2800 min
-1
(rpm).
8. Slowly close the loading valve to generate the pressure approx.
9.8 MPa (100 kgf/cm
2
, 1400 psi).
9. Hold in this condition until oil temperature reaches approx.
50 °C (122 °F).
(Reference)
• Adaptor is included in the adaptor set (Code No. 07916-54031).
9Y1210272STS0009US0
Pump Test
• Before pump testing, perform the flowmeter connecting
and test preparation.
1. Open the loading valve completely.
2. Start the engine and set at approx. 2800 min
-1
(rpm).
3. Read and note the pump delivery at no pressure.
(Reference)
Condition
• Engine speed
Approx. 2800 min
-1
(rpm)
• Rated pressure
9.8 MPa (100 kgf/cm
2
, 1400 psi)
• Oil temperature
50 °C (122 °F)
9Y1210272STS0010US0
(1) Hydraulic Test Hose
(2) Adaptor 66
(3) Hydraulic Pump
(4) Hydraulic Test Hose
Hydraulic pump delivery
at no pressure
Factory specification
Above
7.9 L/min.
2.1 U.S.gals/min.
1.7 Imp.gals/min.
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