Kubota B2301 Workshop Manual

STEERING
B2301, B2601, WSM
6-S5
4. CHECKING, DISASSEMBLING AND SERVICING
[1] CHECKING
(1) Relief Valve
Relief Valve Operating Pressure
1. Disconnect the power steering hose L.H. (or R.H.) from steering
the power steering cylinder, and set a pressure gauge and
cable.
(Reference)
• Hose and adaptor size: 9/16-18UNF, 37 ° flare.
2. Start the engine and set at maximum speed.
3. Fully turn the steering wheel to the left (or right) to check the
feeling which the steering wheel lightly locks. Read the relief
valve operating pressure when the steering wheel to the
above-mentioned lock position by operation force at
approximately 9.8 N (1 kgf, 2.2 lbf) of outer.
NOTE
• After set a pressure gauge, be sure to bleed air.
• Note that the pressure value changes by the pump action
of the power steering controller when the steering
operation is continued after the steering wheel is lightly
locked and accurate relief valve pressure cannot be
measured.
(Bleeding air in power steering circuit)
• Start the engine.
• Turn the steering wheel slowly in both directions all the way
alternately several times, and stop the engine.
9Y1211156STS0004US0
(2) Hydraulic Pump for Power Steering
• See page 7-S6.
9Y1211156STS0005US0
Relief valve operating
pressure
Factory specification
11.5 to 12.5 MPa
118 to 127 kgf/cm
2
1670 to 1810 psi
Tightening torque
Power steering hose for
power steering cylinder
24 to 28 N·m
2.5 to 2.9 kgf·m
18 to 20 lbf·ft
(1) Power Steering Hose (R.H.)
(2) Power Steering Cylinder
(3) Power Steering Hose (L.H.)
KiSC issued 11, 2014 A

Kubota B2301 Specifications

General

Engine Type	Diesel
Transmission Type	Hydrostatic
Type	Compact Utility Tractor
Drive	4WD
3-Point Hitch Category	Category I
Fuel Capacity	6.1 gallons
Hydraulic System Capacity	3.7 gallons