Kubota ME8200DTN, Workshop Manual Supplement

Page: 161 / 192

ME8200DTN, WSM HYDRAULIC SYSTEM
N8-S5
3. CHECKING, DISASSEMBLING AND ASSEMBLING
[1] CHECKING AND ADJUSTING
(1) Hydraulic Pump for Power Steering
Hydraulic Flow Test
A
When using flowmeter other than KUBOTA specified
flowmeter, be sure to use the instructions with the
flowmeter.
A
Do not close the flowmeter loading valve completely,
before testing, because it has no relief valve.
1. Disconnect the delivery pipe which is connected from
hydraulic pump to steering controller.
2. Install the adaptor 53 and 54 to the pump discharge port.
[Adaptor 53 and 54 are included in adaptor set (Code No.
07916-54301).]
3. Connect the other hydraulic test hose to the adaptor 53 and
flowmeter inlet port.
4. Connect the other hydraulic test hose to the flowmeter outlet
and put the end of hose into the transmission oil port
5. Open the flowmeter loading valve completely. (Turn
counterclockwise.)
6. Start the engine and set the engine speed at 2000 to 2200
(rpm).
7. Slowly close the loading valve to generate pressure approx.
9.8 MPa (100 , 1422 psi). Hold in this condition until oil
temperature reaches approx. 50 (122 ).
8. Open the loading valve completely.
9. Set the engine speed. (Refer to condition.)
10. Read and note the pump delivery at no pressure.
11. Slowly close the loading valve to increase rated pressure.
(Refer to condition.) As the load is increased, engine speed
drops, therefore, reset the engine speed.
12. Read and note the pump delivery at rated pressure.
13. Open the loading valve completely and stop the engine.
14. If the pump delivery does not reach the allowable limit, check
the pump suction line, oil filter or hydraulic pump.
(1) Power Steering Pump (2) Three Point Hydraulic Pump
0000003557E
KiSC issued 04, 2006 A