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
28 EXCAVATOR OPERATION
EXCAVATOR OPERATION
RUNNING-IN OF THE NEW EXCAVATOR
The operation and care of the new excavator influences
its life span. Your new excavator has been carefully
checked and tested before leaving the factory. In spite of
this, all movable components must run-in during the first
50 work hours. Do not work with full rpm's and full loads
during this period. It is very important to run-in your
excavator properly in order to achieve its full performance
and longevity. During the running-in, the following points
should be adhered to in all cases.
BDo not Work with Full Engine Rpm's or
Full Loads during the First 50 Working
Hours
A Let the engine warm up sufficiently in the cold season.
A Do not let the engine rev-up more than necessary.
BOil Change in the Run-in Stage
The lubrication oil plays a specific and important role
during the run-in phase of the excavator. The numerous
movable parts are not yet run-in, so many fine metal
particles are generated, which can cause damage and
shorten the life of many components. Pay attention to the
oil-change intervals and complete them sooner than later.
See "REGULAR CHECKS AND MAINTENANCE WORK"
section for more details on the oil-change intervals.
BAdjusting the Operator's Seat
To avoid personal injury:
A Make sure that the seat is completely secured
after each adjustment.
C Tilt adjustment
Pull the backrest tilt adjust lever in the direction of [A]
and move the backrest to the desired angle.
C Travel adjustment
Pull the travel adjust lever in the direction of [B] and
slide the seat backward or forward, as required. The
seat will lock in position when the lever is released.
C Weight adjustment
Turn the weight adjust lever to achieve the optimum
suspension setting.
C Height adjustment
Lift the seat to the desired height of the three available
positions. Adjust the seat to the desired position after
lifting the seat to the highest position in the case of
lowering the seat.
(1) Backrest tilt adjust lever
(2) Travel adjust lever
(3) Weight adjust lever
(A) "UNLOCK"
(B) "UNLOCK"
(C) "TO INCREASE TENSION"
(D) "TO DECREASE TENSION"