Gradall 544D-10 (9136-4142) Operation Manual - Manual (Page 20)

To be performed at beginning of each work shift.
The safety, efficiency and service life of your handler will be increased by
performing the operational checks listed below. If any of the items in the
following checks are not operating properly, have them repaired prior to the
machine being placed into service. Items preceded by an asterisk (*) are
optional and may not be furnished on a standard machine.
Before entering the operator’s cab, check:
1. Air Filter Restriction Indicator. If needle is in red area, filter is clogged
and element must be changed.
During warm-up period, check:
* 2. Heater, defroster and windshield wiper.
* 3. Operating lights and rotating beacon.
4. Voltmeter - should show 13.5 to 14 volts.
When engine warms to operating range, check:
5. Service brake and parking brake.
6. Forward and reverse travel.
7. Steering (stop to stop in both directions) with engine at low idle.
8. “Inching” travel-should be smooth through full pedal travel.
9. Horn and back-up alarm.
10. All boom and attachment functions - operate fully and correctly.
11. Hydraulic level sight gauge, level handler, retract all cylinders and check
sight gauge for hydraulic fluid level - refill as required.
12. Hydraulic Filter Condition Indicator - observe engine coolant temperature
gauge after starting normal operation. When needle has been in operating
range for an hour or so, stop handler in a safe area, apply parking
brake, lower attachment fully, shift forward/reverse lever to “Neutral”
position and block wheels. With engine running at full throttle, have an
assistant check the Hydraulic Filter Condition Indicator. When needle is
in red area, filter is clogged and hydraulic oil is bypassing filter. Filter
element must be changed before needle reaches red area.
Complete all required maintenance before operating unit.
5.0
Continued operation with hydraulic
fluid bypassing the filter may cause
severe damage to hydraulic system
components.
CAUTION !
WARM-UP & OPERATIONAL CHECKS