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
-5SAFE OPERATION
7. Do not use the hooks on the roof of CAB for lifting the
excavator.
Before doing maintenance work on the excavator, place
the machine on a firm, flat and level surface, lower the
attachments to the ground, stop the engine, release
pressure trapped in the hydraulic system, lock all control
levers and remove the key. When dismantling hydraulic
parts, make sure that the hydraulic oil has cooled down
sufficiently to avoid burns.
Start maintenance work carefully, e.g. loosen plug slowly
so that oil will not squirt out.
1. Before doing work on the engine, the exhaust system,
the radiator and the hydraulics, let the excavator cool
down sufficiently.
2. Always turn off the engine when filling the fuel tank.
Avoid spilling and over-filling of fuel.
3. Smoking is prohibited while refueling or handling the
battery. Keep sparks and fire away from the fuel tank
and battery. Flammable gases escape from the
battery, especially during charging.
4. Do not use or charge a refillable type battery if the fluid
level is below the LOWER (lower limit level) mark.
Otherwise, the battery component parts may
prematurely deteriorate, which may shorten the
battery's service life or cause an explosion. Check the
fluid level regularly and add distilled water as required
so that the fluid level is between the UPPER and
LOWER levels.
5. Read and follow the directions "STARTING WITH AN
AUXILIARY BATTERY" in "OPERATION OF THE
ENGINE", when starting with an auxiliary battery.
6. Keep a first-aid box and a fire extinguisher at hand at
all times.
7. Do not open the radiator cap before the radiator has
cooled down sufficiently
First loosen the cap to the first stop and allow the
system enough time to release the remaining
pressure. Then loosen the cap completely.
8. To avoid short-circuiting the battery, always remove
the ground cable first and attach the positive cable
first.
9. Oil under high pressure can penetrate the skin and
may be harmful to your health if not treated
immediately.
10.Leaking hydraulic fluid has enough pressure to
penetrate the skin and cause serious injuries.
Leakages from pin holes can be totally invisible. Do
not use hands for checking for leaks. Always use a
piece of wood or cardboard. It is strongly
recommended that you use a face mask or eye
protection.
Should injuries occur with leaking hydraulic fluid,
contact a doctor immediately. This fluid can cause
gangrene or serious allergic reactions.
11.To avoid environmental damage from acid and heavy
metals, dispose of the battery appropriately.
12.Observe all laws and regulations concerning the
disposal of used oil, coolants, solvents, hydraulic
fluids, battery acids and batteries.
Max. drawbar pull at
coupling hook
116.9 kN (11920 kgf)
Max. vertical load at
coupling hook
12.1 kN (1234 kgf)
5. MAINTENANCE