Pump Test; Removing Hydraulic Pump - Kubota B2410 Workshop Manual

82410 • 82710 • 82910 WSM, 12271
Condition
• Engine speed Approx. 2600 rpm
• Rated pressure 12.3 MPa
125 kgf/cm
2
1778 psi
• Oil temperature 50 °C
122°F
7 STEERING
Pump Test
• NOTE
• Before pump testing, perform the flowmeter connecting and
test preparation. (See page a-54.)
1. Open the loading valve completely.
2. Start the engine and set at approx. 2600 rpm.
3. Read and note the pump delivery at no pressure.
4. Slowly close the loading valve to increase pressure approx. 12.7
MPa (130 kgflcm
2 ,
1849 psi).
5. Read and note the pump flow at rated pressure.
6. Open the loading valve and stop the engine.
(Reference)
9.8 Umin.
82410
2.6 U.S.gal/min.
Hydraulic pump delivery Factory
2.2Imp.gal/min.
at no pressure spec.
11.7 Umin.
82710
3.1 U.S.gal/min.
82910
2.6 Imp.gal/min.
8.3 Umin.
82410 2.2 U.S.gal/min.
Hydraulic pump delivery Factory
1.8 Imp.gal/min.
at rated pressure spec.
82710
10.0 Umin.
82910
2.6 U.S.gal/min.
2.2 Imp.gal/min.
12271870020
DISASSEMBLING AND ASSEMBLING
12270P70020
Removing Hydraulic Pump
1. Open the bonnet then remove the grille side cover (RH) and
disconnect the battery grounding cord.
2. Disconnect the connector of the engine stop solenoid (3) and
accelerator rod (1).
3. Disconnect the power steering delivery pipe (2) and 3-point hitch
delivery pipe (6).
4. Disconnect the suction hose (5) and remove the hydraulic pump
(4).
(When reassembling)
• Apply liquid gasket (Three Bond 1208D or equivalent) to engine
stop solenoid.
• NOTE
• For fastening hydraulic pipe nut, use two wrenches. Hold
the fitting with a wrench, turn the pipe nut another wrench
to avoid damage at fitting installed part.
Delivery pipe nut for power
65 to 75 N·m
Tightening torque 6.6 to 7.7 kgf·m
steering
47.9 to 55.3 ft-Ibs
(1) Accelerator Rod
(2) Power Steering Delivery Pipe
(3) Engine Stop Solenoid
7-S5
(4) Hydraulic Pump
(5) Suction Hose
(6) 3-Point Hitch Delivery Pipe
12270870070