Oil Recommendations For The Hydraulic Circuit; Breakdown Detection And Analysis - Kubota GCD 900 F Notice D'utilisation

GCD 900 F

OIL RECOMMENDATIONS FOR THE HYDRAULIC CIRCUIT

GB
Hydraulic circuit tank capacity: 25 litres.
Generally speaking, use HV type oil with a viscosity of 46 cSt at 40°C in temperate climates.
In countries where there is a risk the temperature will descend below -10°C and where the machine will be used, oils with a lower viscosity (32 cSt) or
oils for severe cold must be used.
In cold countries, it is recommended the machine is left idling in order for it to warm up, as is the case for the tractor.

BREAKDOWN DETECTION AND ANALYSIS

GB
The problems described in the following table may be encountered when starting or using the mower. The table is intended to analyse simple problems
that can be easily resolved.
CAUTION: All tests must be carried out with the grassbox empty and the turbine in a clean condition.
Breakdown
Pump suction problem.
No pressure in the
circuit, but the pump
flow is correct.
The machine
overheats.
Oil leak at the motor
shaft seal.
The quick connection
couplers are hard.
Recommended oil KUBOTA ULTRACTIVE HYDRAULIQUE OIL 46
ACCOR LUBRIFIANTS
ELF
MOBIL (ESSO)
SHELL
TOTAL
Other suppliers
MOTUL
IGOL
AGIP
BP
Probable causes
Air intake.
Suction hose bent or clogged-up.
Pump worn or damaged.
The hydraulic block's pressure
incorrectly adjusted.
The solenoid valve fitted to the block is stuck in
the operating position, but the turbine is not
fitted.
The exchanger is not operational.
The motor drain hose is incorrectly connected or
not connected.
There is no pressure in the circuit.
ACCOFLUID T46
HYDRELF DS 46
UNIVIS 46
TELLUS T 46
TELLUS HD 46
EQUIVIS ZS 46
HYDRAGRI 46
RUBRIC HV 46
TICMA FLUID 46
H - LIFT 46
ARNICA 46
TERRA SUPER
HYDRAULIC 46
Check coupling and hose tightening.
Check the suction hose. No bend or leak
allowed.
Check the condition of the pump, replace it if
necessary.
limiter is Measure the pressure at the inlet to the block
(measurement to be taken with couplers
disconnected and
engaged).
Check the solenoid valve changes position
correctly.
Check the condition of the wiring harness.
Check the electrical connection (fuse, supply).
Check the wiring harness by shunting the
2 lugs of the temperature probe.
Check the temperature probe.
Check the motor drain connection.
Decompress the circuit via the pressure tap.
32
Remedy
the turbine control
Révision 01 - 10/2008