1. Alternator Fault Light - This light monitors the charging current. It should come on if the ignition key is turned to the ON position. It goes out if the alternator is charging. If it does not go out with the engine running, the batteries are not being charged. Determine the cause and correct the problem.
2. Engine Oil Pressure Fault Light - This light monitors the engine oil pressure. After starting the engine and building up sufficient oil pressure, the light goes out. If the light comes on with the engine running, the lubrication system may have developed a fault. Stop the engine immediately. Correct the problem before starting again.
3. Engine Temperature Fault Light - A red light shows that the engine is overheating. Stop engine immediately. When the light comes on, the horn sounds at the same time. Check for loose or broken fan belts.
4. Main Headlight Beam Indicator Light
5. Parking Brake Light - This lights when the track brakes are released. The light extinguishes when the brakes are applied.
6. Service Hour Meter - Use this to determine the service intervals.
7. Fuel Gauge - The fuel gauge monitors the fuel tank contents.
8. Working Beam Switch
9. Windshield Wiper Switch
10. Power Socket - This socket may be used for hand lamps, cigarette lighters or similar devices. Check voltage.
11. Push Button Starter - Push the button to start the engine.
12. Key Switch - Four Positions:
- 0 - Ignition Off
- 1 - No Function
- 2 - Heat-Start Activation
- 3 - Ignition On
- 1 - No Function
NOTE: Directional control must be in NEUTRAL to start engine.
13. Governor Control Lever - Pull back to increase the engine speed. Push lever fully forward to stop the engine.
14. Drive Control - The drive control lever controls the track motors either simultaneously or individually.
- Straight forward - travel forward
- Straight back - travel back
- Straight left - spot turn left
- Straight right - spot turn right
- Diagonal front left - travel forward left
- Diagonal front right - travel forward right
- Diagonal back left - travel drive back right
- Diagonal back right - travel drive back left
- Straight back - travel back
15. Parking Brake Push Button - The neutral position of drive control, locks the track motors hydraulically. In addition to each track motor a multi-plate brake is provided. These brakes are service brakes and must be applied during machine service.
Depress the button for applying brakes, and press again to release brakes. See also "Parking Brake Light."
1. Swing Gear Brake Pedal - The swing brake pedal is used to slow down the rotating upper carriage. Do not brake and use the swing control at the same time.
2. Hydraulic and Undercarriage Lock Lever - This lever is located at the left lower side of the operator's seat. With the lever in the vertical position the undercarriage is locked, and all hydraulic functions are blocked, the operator can enter or leave the cab.
With the lever down, all hydraulic functions are operable.
3. Lift Cylinder Shutoff Valve - While excavating, the shutoff valve is forward (open). While traveling or while waiting with loaded boom, the shutoff valve may be closed (move backward). This prevents the lift cylinder from lowering (due to valve block leakage).
4. Main Boom Cylinder and Swing Control Lever -
- Forward - Extend main boom.
- Backward - Retract main boom.
- Left - Swing to left.
- Right - Swing to right.
- Backward - Retract main boom.
5. Control Lever for Lift Cylinders and Bucket Cylinder -
- Forward - Lower bucket.
- Backward - Raise bucket.
- Left - Fill bucket.
- Right - Empty bucket.
- Backward - Raise bucket.
6. Optional Hydraulic Attachment Push Button - While this push button is depressed, the swing control lever does not swing the machine to the right or the left. The lever then operates a hydraulic attachment (if equipped) move the lever clockwise or counterclockwise with the same rotation of attachment.
7. Independent Heater Switch -
- Turn left - ventilation on.
- Turn right - heater on (indicator light on).
- Neutral position - heater and ventilator off.
- Turn right - heater on (indicator light on).
8. Horn Push Button
9. Heat-Start Indicator Light - Turn key to Heat-Start, when light comes on, start the engine.
Swing Brake Shutoff Valve - The shutoff valve can be used to establish a non-positive connection (temporary) between the upper carriage and the undercarriage. Lever located under left side of operator's seat.
Air Cleaner Indicator (1, Fig. 776) - Progressive choking of the air cleaner filter enlarges the red field in the inspection glass of the indicator and warns that replacement of the filter is necessary. This visual check is possible even with the engine stopped, if the indicator locks in the red position after maximum negative pressure has been reached. After replacing the filter, press the release button. A neutral area will once more appear in place of the red field.
Defroster (1, Fig. 513) - Direct the air flow as required by turning the nozzle.
Fuse Box (2, Fig. 776) - The fuse box is mounted behind the plastic trim panel and is easily accessible after opening the snap fasteners.
Locking the Upper Carriage - Locking bolt for the upper carriage (3, Fig. 776) for transport and long traveling distances.
Locking Latch for the Cab Door in Open Position (Fig. 515) - Press the door against the cab wall for locking. Release by pulling the latch forward.
Cab Light (Fig. 516) - Use switch in the lamp to switch lamp on or off.
Emergency Release of the Lift Cylinders (6, Fig. 574) - If a defect arises in the hydraulic pilot system or a failure of the oil pump or the diesel engine occurs, the attachment can be lowered to the ground by turning the shutoff valve through 90°.
Make sure that nobody is under the boom before operating the emergency release. A baffle installed in the pipe system reduces the lowering speed. Close the shutoff valve again after placing the attachment on the ground (machine service).