Kubota BX1870 Workshop Manual

HYDRAULIC SYSTEM
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM
5-S2
2. SERVICING SPECIFICATIONS
9Y1210855HYS0002US0
Item Factory Specification Allowable Limit
Relief Valve
(Condition)
• Engine Speed:
Maximum
• Oil Temperature:
45 to 55 °C (113 to 131 °F)
Setting Pressure 12.3 to 12.7 MPa
125 to 130 kgf/cm
2
1780 to 1840 psi
–
Hydraulic Pump
(Condition)
• Engine Speed:
1500 min
-1
(rpm)
• Oil Temperature:
45 to 55 °C (113 to 131 °F)
Power Steering Oil
Flow
Above
8.0 L/min.
2.1 U.S.gals/min.
1.8 Imp.gals/min.
–
Mower Linkage Clearance "L2" 0 to 0.5 mm
0 to 0.01 in.
–
[Hydraulic Pump]
Gear to Casing
•Gear
•Case
Gear Shaft to Bushing
•Gear Shaft
• Bushing
Side Plate
Clearance
O.D.
I.D.
Clearance
O.D.
I.D.
Thickness
–
33.520 to 33.530 mm
1.3197 to 1.3200 in.
33.570 to 33.577 mm
1.3217 to 1.3219 in.
0.020 to 0.091 mm
0.00079 to 0.0035 in.
14.970 to 14.980 mm
0.58937 to 0.58976 in.
15.000 to 15.061 mm
0.59056 to 0.59295 in.
2.48 to 2.50 mm
0.0977 to 0.0984 in.
0.15 mm
0.0059 in.
–
–
0.12 mm
0.0047 in.
–
–
2.40 mm
0.094 in.
Hydraulic Cylinder I.D. 80.05 to 80.15 mm
3.152 to 3.155 in.
80.20 mm
3.157 in.
Hydraulic Arm Shaft O.D. (LH)
O.D. (RH)
31.925 to 31.950 mm
1.2569 to 1.2578 in.
29.925 to 29.950 mm
1.1782 to 1.1791 in.
–
–
KiSC issued 02, 2017 A

Kubota BX1870 Specifications

General

Engine Type	Diesel
Engine Power	18 hp
Transmission	Hydrostatic
Fuel Capacity	6.6 gallons
Wheelbase	55.1 inches
Type	Sub-Compact Utility Tractor
Engine	Kubota D722
PTO Power	13.5 hp
Number of Cylinders	3
Cooling	Liquid
Drive	4WD
Drive Type	4WD
Width	44.5 inches
Hydraulic System Type	Open center
PTO Speed	540 RPM
Displacement	0.719 L
Fuel Tank Capacity	6.6 gallons
Gears	Infinite (2-range) forward and reverse
Front Tire Size	18x8.5-10
Rear Tire Size	26x12-12