Versalift VST-9000I-E100, Руководство по обслуживанию и установке

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103-7 VERSALIFT VST-9000-I-E
SER
VICE PROCEDURES
B. Rotation Bearing Teeth - Unscrew the gear
cover mounting bolts and remove the gear
cover. Then apply a waterproof gear grease
such as Lubriplate’s “Gear Shield Heavy” to the
rotation bearing gear teeth, as shown in Figure
4. Rotate the aerial lift through 360° stopping
at 90° intervals to apply grease to the teeth
of the rotation. The lubrication required done
simultaneously.
WARNING:
KEEP CLEAR OF THE
GEARS WHILE ROTATING THE AERIAL LIFT
AND ALWAYS REINSTALL THE COVERS AFTER
COM PLET ING THE LUBRI CA TION. ANYTHING
CAUGHT BETWEEN THE GEARS WILL BE
CRUSHED.
Rotation Bearing Teeth Lubrication
Figure 4
C. Purge any moisture accumulation from air lines.
Disconnect both ends of air line and force dry air
through them until no moisture is discharged. If
unused air lines are present, purge them as well.
6 MONTH OR 500 PTO HOURS MAINTENANCE
AND INSPECTION
1. INSPECTION
A. Inspect hydraulic oil for contamination. If the
hydrau lic oil is cloudy or dirty, drain and replace
it. Refer to “Hydraulic Oil Recommendation”
information in this section to determine which
type of hydraulic oil to use.
B. Inspect slope indicators for true adjustments.
2. MAINTENANCE
A. Change the hydraulic system return line fi lter.
B. Clean any accumulation of foreign material from
the suction strainer and the magnetic drain plug
if oil shows signs of contamination.
Suction Strainer - The 100 mesh (149 micron)
suction strainer must be removed and cleaned
periodically. To remove, drain the reservoir,
unscrew the suction strainer at the bottom of the
tank. Remove, clean, and reinstall the suction
strainer. Pump cavitation is often caused by a
dirty or clogged suction strainer. Operating in
conditions too cold for the type of oil is another
common cause for pump cavitation. Noisy pump
operation is a strong indicator of pump cavitation.
When the return line filter and suction
strainer are changed or cleaned the oil should
be examined for foreign particles and water. If
contamination is found, the oil must be changed
or reclaimed by adequate fi ltering.
C. Verify settings of system operating pressure
and main system relief pressure. Refer to
next paragraph for adjustment procedures if
necessary.
System Relief Pressure - The system pressure
relief valve is located in the pressure line
between the pump and the lift/ ground control
selector valve. The relief valve prevents the
hydraulic system from developing excessive
pressure.
To adjust the system relief valve, fi rst relieve
the pressure and then screw in a T-fi tting into
the pressure side of the relief valve and insert a
pressure gage into the T-fi tting. Start the engine
and retract the inner boom until it reaches
the end of its travel. The hydraulic pressure
measured by the pressure gage should be 3000
PSI (210 kg/cm
2 ) and no higher while the control
valve is being held open. If it is necessary to
adjust the valve, remove the valve cap and
loosen the locknut. Use a screwdriver to adjust
the setscrew, clockwise to increase the pressure
or counter-clockwise to reduce the pressure.
When the adjustment is complete tighten the
locknut and replace the protective cap.
C A U T I O N :
N E V E R S E T S Y S T E M
O P E R AT I N G P R E S S U R E A B O V E T H E
RECOMMENDED SETTING OF 3000 PSI (210 kg/