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
88 LONG STORAGE
Periodic replacement of important component parts
To ensure safety in operation, you are strongly requested to inspect and service the machine at regular intervals. For added
safety, ask your KUBOTA dealer to replace the following important component parts.
These parts are prone to degradation in material or subject to wear and tear with time. It is difficult to judge how much they
have been affected at regular inspection. It is therefore necessary to replace them with new ones, whether wear is visible
or not after a specified time of use.
If any of them is found worn even before the specified use, it must be repaired or replaced the same way as other parts.
If any of the hose clamps is found deformed or cracked, the hose clamp must also be replaced.
For the hydraulic hoses other than the ones to be replaced periodically, inspect them for the following points. If found
unusual condition, tighten them up, replace them.
When replacing the hydraulic hoses, change their O rings and sealings with new ones.
For replacement of the important parts, contact your KUBOTA dealer.
A At the following periodic inspections, check the fuel hoses and hydraulic hoses as well.
List of important component parts
To prevent serious damage to the hydraulic system, use only a KUBOTA genuine hydraulic hose.
Inspection Interval Check points
Daily Checks Oil leak at fuel and hydraulic hose connections and points
Every month
Oil leak at fuel and hydraulic hose connections and points
Damages at fuel and hydraulic hose (cracks, chafing)
Every year
Oil leak at fuel and hydraulic hose connections and points
Interference, deformation, degradation, twist and other damages (cracks, chafing) of fuel and hydraulic hoses
No. Component parts Used place Q'ty Period
1 Fuel hose
Fuel tank - Water separator 1
Every 2 years or
4000 hours
Water separator - Fuel pump 1
Fuel pump - Fuel filter 1
Fuel filter - Fuel nozzle 1
Fuel nozzle - Fuel cooler 1
Fuel cooler - Fuel tank 1
2 Hydraulic hose (suction)
Tank - Pipe, Suction 1
Pipe, Suction - Main Pump
1
3 Hydraulic hose (delivery)
Main pump - Control valve 3
Main pump - Pilot filter 1
Pilot filter - Unload valve 1
4 Hydraulic hose (Boom cylinder) Control valve - Boom cylinder 2
5 Hydraulic hose (Arm cylinder)
Control valve - Pipe, Boom 2
Pipe, Boom - Arm cylinder 2
6 Hydraulic hose (Bucket cylinder)
Control valve - Pipe, Boom 2
Pipe, Boom - Bucket cylinder 2
7 Hydraulic hose (Swing cylinder) Control valve - Swing cylinder 2
8 Hydraulic hose (Dozer cylinder)
Control valve - Rotary joint 2
Rotary joint - Pipe 2
Pipe - Dozer cylinder 2
9 Hydraulic hose (Service port)
Control valve - Pipe, Boom 4
Pipe, Boom - Pipe, Boom 4
Pipe, Boom - Pipe, Arm 4
10 Hydraulic hose (Swivel motor) Control valve - Swivel motor 2
11 Hydraulic hose (Travel motor)
Control valve - Rotary joint 4
Rotary joint - Travel motor 4
12 Hydraulic hose (Angle cylinder)
Control valve - Rotary joint 2
Rotary joint - Pipe 2
Pipe - angle cylinder 2