Kubota G1700 4WS User Manual

G 1700·G 1800·G 1900·G2000 WSM, 10830
S.6 HYDRAULIC SYSTEM
TROUBLESHOOTING
Symptom
Probable Cause
Solution
Reference
Page
Mower Does Not
Rise
• Control valve malfunctioning
•
lift cylinder damaged
•
Relief valve spring damaged
•
Relief valve setting pressure too low
• Auxiliary pump defective
• Oil strainer clogged
• Suction pipe loosened
or broken
•
Suction pipe a-ring damaged
•
Insufficient transmission oil
Repair or replace
Replace
Replace
Adjust
Replace
Clean
or replace
Repair
or replace
Replace
Refill
5.6-3,4
5.6-5
S.6-4
S.6-2
S.2-11
S.G-12
S.2-8
S.2-8
S.G-5
Mower Does Not
Lower
• Control valve
malfunctioning
Repair or replace
5.6-3,4
Mower Drops by
Its Weight
•
Lift cylinder worn or damaged
•
Control valve malfunctioning
Replace
Replace
S.6-5
S.6-3,4
SERVICING SPECIFICATIONS
Item
Factory Sp~cification Allowable limit
Relief Valve
Setting Pressure 2.94
to 3.43 MPa
-
(Control Valve)
30 to 35 kgf/cm2
427
to 498 psi
Relief Valve
Setting Pressure
1.96 to 2.45 MPa
-
(Control Valve Adaptor)
20 to 25 kgf/cm2
284
to 356 psi
TIGHTENING TORQUES
Tightening torques of screws and nuts on the table below are especially specified.
(For general
use screws and nuts: See page 5.G-3)
Item
N·m
kgfom
ft-Ibs
Control valve
adaptor mounting
screw
Control valve
mounting screw
Cylinder hose
19.6t029.4
16.7
to 21.6
14.7to 19.6
2.0t03.0
1.7t02.2
1.5 to 2.0
14.5
to 21.7
12.3to15.9
10.8to 14.5
S.6-1
291

Kubota G1700 4WS Specifications

General

Type	Lawn Tractor
Engine Model	Kubota D662
Transmission Type	Hydrostatic
Drive Type	4WD
Steering	4-wheel steering
Tire Size (Rear)	23x10.50-12
Engine Type	Diesel, liquid-cooled, 3-cylinder
Width	107 cm