Kubota BX1870 Workshop Manual

HYDRAULIC SYSTEM
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM
5-S12
[4] DISASSEMBLING AND ASSEMBLING
(1) Hydraulic Cylinder and Control Valve
Control Valve
1. Remove the control valve (1).
2. Remove the internal snap ring (4) and draw out the spool (2).
9Y1210855HYS0012US0
Control Valve Lever
1. Pull out the pin (1).
2. Remove the control valve lever (3) and arm (2).
9Y1210855HYS0013US0
Lift Arm, Hydraulic Arm Shaft and Hydraulic Arm
1. Remove the external snap rings (8), (10), and remove the lift
arms (2), (7).
2. Draw out the hydraulic arm shaft (4).
(When reassembling)
• Align the alignment marks of the hydraulic arm (5) and hydraulic
arm shaft (4).
• Align the alignment marks of the lift arms (2), (7) and hydraulic
arm shaft (4).
• Apply grease to the right and left bushings and O-rings.
• Be careful not to damage the O-ring.
9Y1210855HYS0014US0
(1) Control Valve
(2) Spool
(3) Plain Washer
(4) Internal Snap Ring
(1) Pin
(2) Arm
(3) Control Valve Lever
(1) Hydraulic Cylinder Block
(2) Lift Arm LH
(3) O-ring
(4) Hydraulic Arm Shaft
(5) Hydraulic Arm
(6) O-ring
(7) Lift Arm RH
(8) External Snap Ring
(9) Cover
(10) External Snap Ring
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