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
REGULAR CHECKS AND MAINTENANCE WORK74
4. Retighten the drain plug.
5. Fill oil through the oil filling opening on the top side of
the tank.
6. Let the engine run and operate the boom, arm, bucket
and boom swing device. Then bring the boom to the
highest position, pull the arm, bucket inward and boom
swing left end.
7. Fill oil again up to the center of the gauge.
8. Install the hydraulic tank cover and tighten the oil filling
plug.
BHydraulic Oil Check with Hydraulic
Hammers
The hydraulic oil change after 1000 operating hours in the
operator's manual is based on normal excavator work.
Following inspection measures are valid when hydraulic
hammers are used:
1. Changing and filling up of hydraulic oil
(1) The hydraulic oil must be changed more often
when hammers are used because the machine is
subject to harder conditions than normal
excavating work.
(2) Use only the recommended oils mentioned in the
operator's manual when changing or filling with
oil.
(3) When filling up oil, do not mix oils of different
makes.
2. Changing the return filter and oil
(1) The filter must be changed more often because of
contamination resulting from the frequent
assembly and disassembly of the hoses.
(2) Use the correct replacement filter.
(3) Oil change according to operating hours.
(1) Oil filling plug
(2) Pin
(3) Suction filter
(4) Drain plug
Hydraulic
oil volumes
Hydraulic tank 45 L
Whole oil volumes 79 L
Hydraulic
oil
Return
filter
Suction
Filter
Normal
excavator work
every 1000
Hrs.
every 1000
Hrs.
(250 Hrs.
after first
operation)
every 1000
Hrs.
Hammer
work
portion
20%
every 800
Hrs.
every 800
Hrs.
40%
every 400
Hrs.
every 400
Hrs.
60%
every 300
Hrs.
every 300
Hrs.
more
every 200
Hrs.
every 200
Hrs.