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 WORK72
BReplacing Fuel Filter Cartridge
To avoid personal injury:
A Keep fire away.
1. Remove the filter with the filter wrench.
2. Apply a light film of fuel to the seal of the new filter and
turn in tightly by hand.
3. Open the cock of the fuel filter again.
A After exchange of the filter, the fuel system must be
purged of air.
BReplacing Breather Filter
See "Replacing Hydraulic Return Filter Element" in
"EVERY 1000 SERVICE HOURS" section.
EVERY 1000 SERVICE HOURS
Do all 50, 100, 200, 250 and 500 hour servicing at the
same time.
BReplacing the Hydraulic Pilot Filter
Element
To avoid personal injury:
A Before replacing the element, wait long enough
for the hydraulic fluid to cool down.
1. Open the side cover.
2. Remove the pilot filter case from the head cover.
3. Wrench and pull out the element downward.
4. Replace the O-ring with a new one.
5. Apply a light coating of clean hydraulic oil to the O-ring
and fit it to the case firmly. Be careful not to scratch the
O-ring.
6. Attach the case to the head cover firmly.
7. Let the engine run for approx. 3 minutes.
8. Check the oil level of hydraulic oil tank, then tighten the
oil filling plug.
(1) Fuel filter cartridge
(1) Rear right cover