Doosan D15S-5, Спецификации систем эксплуатации, испытания и регулировка

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Vehicle Systems Testing and Adjusting
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NOTE: The oil in the lines to the steering cylinder
stops at the piston. The oil in the cylinder does not
flow in a circuit. As the piston moves backward and
forward, the oil moves backward and forward in the
lines. Air in these lines, and in the cylinder, may
move slowly into the steering control valve and then
to the tank.
WARNING
Personal injury can result if loss of steering
occurs. Do not operate the vehicle until the air is
removed.
7. When the oil in the tank is clear (not cloudy), the
system is free of air.
8. Fill the tank to the recommended level.
Steering System Pressure Check
If the steering system does not work correctly, check
the hydraulic tank for the correct oil level and the
hoses and connections for leakage. If all these items
are correct, use the Pressure Gauge Kit to check the
steering hydraulic system and its relief pressure
setting.
Hydraulic Steering Gear
(1) Pressure gauge plug (M10 x P1)
WARNING
Hydraulic pressure can cause personal injury.
Before any steering system hydraulic lines or
components are disconnected, make sure all
hydraulic pressure is released in the steering
system. Move the steer wheels to the left and
right and then to the straight forward direction.
Check steering system relief pressure as
follows:
1.
Turn the engine off.
2. Remove plug from elbow (1) Install pressure-
checking adapter (4) and connect pressure-tube
(5) and pressure gage (6). Pressure gage (6) has
a range of 28000 kpa (4000psi).
3. Move the seat to the normal position for
operation, turn the key switch to the ON position
and activate the hydraulic controls until the oil is
at a temperature for normal operation.
4. Turn the steer wheels to the left or right against
the stops and make a note of the indication on
the pressure gauge.
5. The indication on the pressure gauge must be
the priority valve relief setting of 8275(
±
500,0)
kPa or 1,200 (
±
70,0) psi. If the indication is
correct and a problem exists, then there is
possibly a mechanical failure in the steering
system.
6. If the indication is not correct, then there is
steering hydraulic failure in the components.
(4) Pressure-checking adapter. (5) Pressure-tube.
(6) Pressure gauge.