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
CHECKS BEFORE START18
BAuto Idle Switch
The switch is used to enable and disable the Auto Idle
control.
BThrottle Potentiometer
1. Sit down on the operator's seat and turn the throttle
potentiometer clockwise (toward the high speed), and
the engine revs up.
2. To stop the engine, turn the throttle potentiometer fully
toward the low speed and keep the engine at the idling
speed. Then set the starter key to the "STOP"
position.
BTravel Speed Switch
Travel speed will increase when this switch is pushed
down.
Switching the dual travel speed:
1. Press the travel speed switch. The buzzer beeps twice
and the travel speed changes from low to high. The
symbol lights up.
2. Press the travel speed switch again, and the buzzer
beeps once and the travel speed changes from high
speed to low. The symbol goes out.
A When activating the travel speed switch, it must be
pushed down completely.
A Each time the travel speed switch is pressed, the
travel speed is switched between low and high.
A Enable: Press the Auto Idle switch. When the
Auto Idle control is on, the Auto Idle lamp
stays on.
A Disable: Press the Auto Idle switch once again.
Now the Auto Idle control is deactivated
(The Auto Idle lamp goes out.)
(1) Auto idle switch
(2) Auto idle lamp
(1) Throttle potentiometer
(1) Travel speed switch
(2) Speed indicator light