SEMI ANNUALLY:
SUCTION FILTER
Remove and clean the hydraulic reservoir intake suction filter. This permanent screen type
filter is located inside the reservoir on the intake to the pump manifold. Access to the filter
is accomplished by removing the cover with filler neck and filter holding device from the top
of the reservoir. Move the lever towards the front of the machine and lift out the filter.
Remove the “O” ring from the adapter and check it for damage or deterioration. If the ring
is at all damaged, replace it.
RESERVOIR RELIEF VALVE
Check the hydraulic reservoir relief valve for proper functioning. The valve is located in the
filler cap and is checked by extending all the boom cylinders and then retracting them to
slightly pressurize the reservoir. When the cap is turned to the first notch, air should be
heard escaping if the system is holding pressure. The system is sealed and has a relief
valve pressure setting of 14 psi.
1500 HOURS OR YEARLY:
HYDRAULIC RESERVOIR
Drain and clean the hydraulic reservoir. Change the hydraulic oil.
A change interval cannot be established which would apply to all oils and all operating
conditions of temperature and cleanliness. However, a reputable brand of turbine grade oil
can be expected to deliver 1500 hours of service under average operating conditions.
Although conditions may necessitate shorter change intervals, do not use hydraulic oil for
more than 1500 hours.
Whenever a visual inspection, chemical test or light test indicates that an oil change is
necessary, proceed as follows:
1.
Warm the oil prior to draining but avoid draining immediately after prolonged
continuous use to reduce the danger of being burned by hot oil.
2.
Retract all cylinders to return the maximum amount of oil to the reservoir. Loosen the
top covers and remove the drain plug(s) at the bottom of the reservoir. Allow sufficient
time for the reservoir to drain thoroughly.
3.
Remove the return filters, clean springs, bypass valves and inspect cover gasket for
damage and deterioration. Replace gasket if necessary.
A good lubrication program requires that all normal wear points be lubricated according to
a set schedule with specific types of lubricants. Refer to the lubrication chart and the
special items covered in this section for the recommended lubricants, time intervals and
lubrication procedures. Where components such as the engine, transmission and axles are
not manufactured by this company, the original manufacturer’s recommendations take
precedence should any discrepancy occur. If there is any doubt about the proper
lubricants, intervals or lubrication procedures, refer to the original manufacturer’s manual.
The lubrication intervals recommended in this section assume normal operating conditions.
161
P/N 12261-319 REVISED: August 2012
Summary of Contents for RT200-1
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