Kubota BX1870 Workshop Manual

HYDRAULIC SYSTEM
BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM
5-S1
1. TROUBLESHOOTING
9Y1210855HYS0001US0
Symptom Probable Cause Solution
Reference
Page
Implement Does Not
Rise (No Noise)
Control valve broken Replace 5-S12
Control valve improperly assembled Repair 5-S12
Relief valve spring damaged Replace 5-S4
Spool sticks Repair 5-S12
Piston O-ring or cylinder damaged Replace 5-S12
Implement Does Not
Rise (Noise)
Oil filter cartridge clogged Replace G-22
Suction pipe loosen or broken Repair or replace –
Suction pipe connecting hose loosen or broken Repair or replace –
Suction pipe O-ring broken Replace –
Insufficient transmission oil Refill G-32
Relief valve setting pressure too low Adjust or replace 5-S4
Hydraulic pump broken Replace –
Implement Does Not
Lower
Control valve malfunctioning Repair or replace 5-S12
Implement Drops by
Its Weight
Hydraulic cylinder worn or damaged Replace 5-S19
Piston O-ring worn or damaged Replace 5-S12
Control valve malfunctioning Replace 5-S12
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