10 Operation

from Liebherr R 9150 E Hydraulic Excavator Operating Manual 38120 - PDF DOWNLOAD

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Operating Manual

Greasing system – Cabin Location

For more details:

Information regarding the operation of the control unit are available in the respective manual.

Refer to Data Sheet 93EN-98002-xxx for the Electronic Controller

System P1: Automatic lubrication

CAUTION!

Operation by authorized and instructed personnel only! Never exceed the admissible system pressures! Refill clean lubricant on time!

CAUTION!

Do not interrupt the power supply (main switch of battery) while the pump is operating.

When starting the excavator, the centralized lubrication systems are connected to the power supply automatically. Each lubrication pump then starts a full lubrication cycle and is stopped during the preset pause time only, etc.

The pump P1 delivers lubricant via a single-line system to the lubrication points according to Chapter 9.2 Configuration.

Regarding the control and monitoring of the system refer to: Chapter 9.2. Cabin greasing module U41 or Electronic Controller

If required, the operator can force the greasing cycle: for details refer to the respective data sheets.

See the characteristics of each lubrication points: Characteristics of lubrication points on the excavator.

For more details:

Chapter 9.2 Greasing cycle

Pump P3 CAUTION!

Operation by authorized and instructed personnel only! Never exceed the admissible system pressures! Refill clean lubricant on time!

CAUTION!

Do not interrupt the power supply (main switch of battery) while the pump is operating.

When starting the excavator, the centralized lubrication systems are connected to the power supply automatically. The lubrication pump starts a full lubrication cycle and stops during the preset pause time only, etc.

The pause time is factory-set to 6 minutes.

In normal working condition, no actions are required from the operator.

The only useful information is the low level quantity of the pump P3 reservoir.

If required, the operator can force the greasing cycle: for details refer to the respective data sheets. NOTE!

DAILY: DO A VISUAL CHECK OF THE RESERVOIR FOR GREASE LEVEL

For more details:

Chapter 9.3 Greasing cycle

11 Inspection and Maintenance

DANGER!

– Do not carry out any repair works while the system is pressurized

– Grease: Relieve system from pressure by carefully opening a fitting and/or the manual vent valve(s) if installed (option)

– Hydraulic Oil: Relieve hydraulic system from pressure as described in the Operator Manual

– Warning: Lubricant may spurt out while system is under pressure.

NOTE!

Regular inspection and maintenance intervals are prerequisites for the proper functioning of the centralized lubrication system over a longer period of time. Any claim for warranty or liability will be null and void, if the prescribed maintenance intervals are not adhered to.

Please observe the following regular inspections and maintenance works:

Daily:

Visually check the lubrication points with regard to leaking lubricant

Visually check the hose connections with regard to leaks and abrasions

Check movement of indicator pins: During the lubrication time the pins have to retract, in the pause time all pins have to be extracted.

Weekly:

Visually check of tube fittings with regard to leaks

Determine the time required for one lubrication cycle. If the determined time deviates much from the usual lubrication time, check each single component (pumps, metering devices, tube lines).

Every 1000 operating hours:

Clean or replace strainer assembly

Clean or replace lubricant filter (refilling)

Check the oil level in the crankcase of the pump model FlowMaster (if applicable) at the dip stick

Every 2000 operating hours:

Change the oil in the crankcase of the pump model FlowMaster.

Use SAE 10W30 motor oil in all units used in an ambient temperature between –40° to 65°C. For ambient temperatures between 10° to 21°C uses Mobil Aero HFA low temperature oil.

12 Troubleshooting

In the following, only malfunctions of the system as a whole are described. You will find detailed remedies for malfunctions of the individual units in the respective User’s Information.

Malfunction: No pressure build-up in the system

Cause: Remedy:

Malfunctions of the pump See Troubleshooting: Pump

Leakage in the main line Check main lines, eliminate leaks, tighten threaded connections, replace defective hoses

Air trapped in the main line De-aerate the line

Injectors leaky or worn See Troubleshooting: Injectors

Malfunction: No pressure relief or too slow pressure relief in the main line (automatic option only)

Cause: Remedy:

Pressure control device faulty Replace pressure control device, check electric cable

Hydraulic vent valve faulty Replace valve, check fluid supply

Grease too hard or not suitable for low temperatures Change lubricant

Motor of pump does not run

Possible cause

Fault in the superior machine or external control unit.

Motor circuit breaker has tripped

Motor runs, but pump does not supply lubricant

Possible cause

Reservoir empty

Air pockets in the lubricant bubbles in the lubricant

Suction bore of pump element is clogged. After disassembling the pump element Disassemble and clean the pump elements.

Defective or dirty system check valve After disassembly of the check valve Replace check valve.

Worn pump element Little pressurization Check pump element and replace, if necessary.

Defective pressure relief valve or fault at the lubrication point

Blockade in the downstream lubrication system

Lubricant leaking from the pressure relief valve

Grease leaking from the pressure relief valve

Determine cause. Replace pressure relief valve

Determine cause and eliminate it.

If the fault cannot be determined and remedied, contact our Customer Service.

Please follow the instructions of the respective product.

For more details:

Regarding error codes (fault indications)

Refer to 4.4DE_EN-68610-xxx or Refer to 93EN-98002-xxx

Fault indications (error codes)