Rayco C120R, Руководство оператора, обслуживания и запасных частей

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C120R Operator Service Maintenance Manual
58
Maintenance
Hydraulic Oil - Change
1. Steam clean the pumps, motors, cylinders, hydraulic
lines, fittings and tank.
2. Place the machine on level ground.
3. Place a container on the ground under the hydraulic
tank drain plug..
4. Loosen hose fittings on cylinders and drain as much
fluid as feasible.
5. Replace and tighten all fittings, plugs and caps. Clean
up all spilled oil, and wipe off fittings.
6. Follow directions on pg. 48 to refill hydraulic tank.
Hydraulics - Start Up Procedure
Action Steps Diagram
1. Check All Fittings on hose and tube connections. Make
sure all fittings are tight to prevent fluid leakage and keep
air from entering the system.
2. Fill Reservoir with the proper fluid (see “System Fluid
Spec i fi ca tions”). It should be passed through a 10
micron (nom i nal) non-bypass filter prior to entering the
reservoir. Never reuse fluid. Check reservoir drain plug
for leaking. Install charge pressure gauge.
3. Supply 10 PSI Maximum Compressed Air to the reservoir
while sealing the reservoir fill neck with a rag held in your
hand. The pressure will push or force the hydraulic fluid
into the system.
4. Loosen Case Drain Connection at Motors, to bleed
the system of any entrapped air. This allows the pump
and motor cases to fill with fluid for instant lubrication
at start-up.
5. Fill Pump and Motor Cases of the circuit through the
uppermost case drain ports. This gives both units instant
lubrication at start-up. Also remove top hose connection
of the HC (Hydraulic Cylinders) pump, fill with oil, and
reinstall top hose connection. This will provide instant
lubrication to HC pump at start-up.
6. Placing the pump Control in Neutral at start-up is essential
to prevent any unexpected machine movement.
7. Run the Prime Mover (engine) for a short period of time
using the starter. (Crank the engine briefly, repeatedly.)
This allows the charge pump to start filling the system.
Start the engine and run at lowest speed. Shut the engine
down within 40 seconds if the charge pressure does
not increase steadily to approximately 340 to 440 Psi.
8. Or run the prime mover until the charge pressure gauge
starts climbing steadily, showing the system is filling. If
the charge pressure gauge does not move, stop the
prime mover and recheck installation.
9. Charge Pressure should be steady at approximately 340
to 440 Psi. This indicates the system is full.
10.If Not at this pressure, stop the prime mover and
troubleshoot the installation and system.
11.Set the Prime Mover at approximately 50 percent of
maximum throttle for a few minutes. This will purge any
remaining trapped air from the system.
12.Cycle Track Control Slowly. Restart the prime mover,
and actuate the track control two or three times to purge
any trapped air from the system.
13.Stop the Prime Mover and remove pressure gauge used
at start-up. Replace the plug. Recheck the reservoir fluid
level and add fluid if necessary. Replace the reservoir cap.
The hydrostatic circuit is now ready for operation.
Hydraulic Circuit
After the hydrostatic circuit is ready, the hydraulic circuit
may be prepared.
1. Check the reservoir level, and add more clean fluid if
necessary. Fill all other components in the HC circuit
with hydraulic oil as completely as possible.
2. Start the engine and run it at normal operating speed.
Using the boom motion controls, slowly, then at normal
operating speed, cycle the boom through all its motions
until all air is bled off. The motions will be smooth and
powerful when all of the air is bled off.
3. Check the reservoir level, and add more clean fluid if
necessary.
4. Remove the reservoir fill neck, and inspect strainer, cap,
and gaskets. Replace if damaged or worn. Clean the
strainer in clean, non flam ma ble solvent, and dry. Install
the strainer. Put a light coat of hydraulic oil on the fill
neck gasket. Install the fill neck. Inspect the gasket on
the breather cap, and replace if damaged. Install the
breather cap.
5. Clean up any spilled hydraulic fluid.
The entire hydraulic system is now completely ready for
operation.
NOTICE
Dispose of drained oil according to local
environment protection regulations.
NOTICE
Prior to filling with fluid, make certain all system
components (reservoir, hoses, valves, fittings, pump,
etc.) are clean. Care must be taken to not run pump
or hydraulic motor without a sufficient amount of fluid
in them.