OPERATOR'S MANUAL
Table Of Contents
- OPS - Excavator U48-4 (RD45881312)
- Abbreviation List
- General Symbols
- Foreword
- Safety First
- Contents Page
- Safe Operation
- Dealer Service
- Technical Data
- Description of Machine Parts
- Instrument Panel and Control Elements
- Checks Before Start
- Daily Checks
- Checking the Devices
- Starter Switch
- Display Selector Switch
- LCD Display for Normal Operation
- Warning Lamp
- LCD Display for Warning
- Setting the Clock
- Reordering the year/month/day and Changing the AM/PM System to the 24 hour one
- Log Record
- Periodic Check
- If all the Check Points are not Displayed at a Glance on a Single Screen
- When the Checkup is Completed
- Horn Switch
- Working Light Switch
- AUX Port Flow Rate Limit Switch
- Auto Idle Switch
- Throttle Potentiometer
- Travel Speed Switch
- CAB Type Machines
- Air Conditioner
- Handling the Safety Devices
- Operation of the Engine
- Excavator Operation
- Running-In of the New Excavator
- Starting
- Driving
- Turns
- Up and Downhill Driving
- Parking on a Slope
- Operation of the Dozer
- Two Pattern Selection System (TPSS)
- Operation of the Boom
- Operation of the Arm
- Operation of the Bucket
- Unit Swing and Boom Swing Operation
- Auxiliary Port Operation
- How to Release Pressure Trapped in the Hydraulic System
- 1 Way or 2 Way Circuit Selection Valve Operation
- Auto Idle (AI) Operation
- Important Information on Excavator Operation
- Transporting the Excavator on a Vehicle
- Lifting of the Excavator
- Maintenance
- Maintenance Intervals
- Opening and Closing of Covers
- Daily Checks
- Checking Coolant Level
- Checking Fuel Level
- Checking Engine Oil Level
- Checking Hydraulic Oil Level
- Checking V-Belt
- Checking Radiator and Oil Cooler
- Checking Washer Liquid
- Cleaning Pre-Cleaner
- Checking and Cleaning Engine and Electrical Wiring
- Greasing Boom Swing Fulcrum
- Washing Whole Machine
- Greasing Front Attachments (without Bucket Pin and Boom Swing Fulcrum)
- Greasing Bucket Pin and Bucket Link Pin
- Regular Checks and Maintenance Work
- Other Adjustments and Replacements
- Troubleshooting
- Operation Under Cold Weather Conditions
- Long Storage
- Recommended Oils
- Appendices
- Lifting Capacity
- List of Screens
25OPERATION OF THE ENGINE
4. Set the starter key to the "RUN" position. Hold the key
at this position until the " " mark on the display panel
disappears.
5. Now make sure the " " and " " marks appear
onscreen. If not, the system has malfunctioned.
Contact your local dealer for repairs.
6. Turn the key to the position "START" and release
after the engine has started.
7. Check if all warning lamps have gone out. Should a
warning lamp still be lit up, stop the engine then
remove the key and check for the cause.
A The starter motor draws a large current. Avoid running
it longer than 10 seconds continuously.
If the engine fails to start within 10 seconds, set the
key to the "STOP" position, wait for 20 seconds or
longer, and repeat the above steps 5 thru 7.
A If the battery is dead and must be connected to
another battery with jumper cable, be sure to use a
12V battery. Never use a 24V batteries.
A If you keep the pilot control lock lever at "UNLOCK"
and try to start the engine, "Up Lever Lock" appears
on the meter panel and the engine cannot be started.
Before staring the engine, make sure the pilot control
lock lever is set at the "LOCK" position.
A When the engine starts, the meter may momentarily
turn off and a beep may sound. This is not a problem.
STARTING THE ENGINE UNDER COLD
CONDITIONS
To avoid personal injury:
A Make sure that the lock lever is in the lock
position during warm up.
Start the engine in the following manner;
1. Make sure the auto idle switch is at the "OFF" position
(lamp off).
2. Pull the lock lever all the way back. (Lock position)
3. Insert the starter key into the starter switch.
4. Turn the throttle potentiometer toward " " (high
speed) position.
5. Set the starter key to the "RUN" position. Hold the key
at this position until the " " mark on the display
panel disappears.
6. Turn the starter key to the "START" position.
7. Once the engine starts, release your hand from the
key. The key will return back to the "RUN" position.
8. If the engine fails to start, set the starter key to the
"STOP" position, and repeat the above steps 5 thru 7.
A Let the engine warm up after start-up for approx. 10
minutes under no load conditions. If the hydraulic fluid
temperature is too low, the operation will be affected.
Do not operate the excavator under full load until the
engine has sufficiently warmed up.
(1) Starter switch (A) "STOP"
(B) "RUN"
(C) "START"