Case 788, 988 Plus Excavator Service Manual

Table of Contents

1. General Information
2. Engine
3. Fuel System
4. Electrical System
5. Undercarriage
6. Drive Train
7. Undercarriage Hydraulics
8. Upper structure Hydraulics

Manual Extract:

Located near the right-hand control lever, it has a front face covered with a silk-screened plastic film, an electronic circuit board with six momentary-action push-buttons, eight LED type indicator lamps, electronic components and a connector.
The functions of the control panel can be classified under four modes:

– The “Work” mode, consisting of the following push-buttons: “FINE” 1580 to 1620 rpm (low flow work, handling), “ECO” 1880 to 1920 rpm (economical, digging) and “MAX” 2180 to 2220 rpm (maximum power, hard work).
– The “Idle” mode consisting of the following push-buttons: “LOW” 900 to 1000 rpm (low idle) and “AUTO” 1180 to 1220 rpm (automatic idle).
– The “Travel” mode (two-speed excavators only) has two indicator lamps: “POSITION 1” (low speed) and “POSITION 2” (high speed).
– The “Pre-heat” mode has an indicator lamp: a flashing lamp shows the machine has not yet reached its normal operating temperature. When that lamp goes out the machine is ready to work.