Liebherr D934 A7–23, D944 A7–23 EMT (Electronic-Mechanical Turbo) Diesel Engine Operators Manual

Table of Content (D934 A7–23, D944 A7–23 Operators Manual)

Only for the United States

1 Product description
1.1 Technical description
1.1.1 Design
1.1.2 Exhaust gas recycling (EGR)
1.1.3 Engine type itemization
1.1.4 Company nameplate
1.1.5 Firing order, cylinder designation and direction of rotation
1.1.6 Engine control unit type plate
1.2 Technical data
1.2.1 Diesel engine
1.2.2 Valve clearance
1.2.3 Coolant thermostat

2 Safety
2.1 Labeling of warnings
2.1.1 Additional labels
2.2 Target group
2.3 Intended use
2.4 Foreseeable misuse
2.5 General safety instructions
2.6 Preventing personal injuries
2.6.1 Bruises
2.6.2 Burns and scalds
2.6.3 Fires and explosions
2.6.4 Poisoning
2.6.5 High-pressure injection (liquids at high pressure can squirt out)
2.6.6 Electrical energy
2.6.7 Danger due to noise
2.7 Personal protective equipment
2.8 Operating areas and maintenance areas
2.8.1 Safety instructions
2.8.2 Operating areas
2.8.3 Maintenance areas
2.8.4 Secure and release the diesel engine against accidental starting
2.8.5 Emergency stop
2.9 Signage
2.10 Prevent material damages

3 Transport and storage
3.1 Dimensions and weights
3.2 Lifting the engine
3.3 Transport
3.3.1 Transport attachment
3.3.2 Transport device
3.4 Storage
3.4.1 Storage
3.4.2 Storage time

4 Operation
4.1 Preliminary work for the initial commissioning of the engine
4.2 Starting the engine
4.3 Turning off the engine

5 Maintenance
5.1 Maintenance schedule
5.2 Preliminary work
5.2.1 Bringing the engine into maintenance position
5.2.2 As needed
5.3 Diesel engine
5.3.1 Checking the V-ribbed belt
5.3.2 Checking the belt drive
5.3.3 Replacing the belt drive
5.3.4 Checking the engine mount
5.3.5 Checking the intake system for leaks and damage
5.3.6 Checking the exhaust system
5.4 Engine oil system
5.4.1 Checking the engine oil system for leaks and damage
5.4.2 Checking the engine oil level
5.4.3 Changing the engine oil
5.4.4 Replacing the oil separator filter insert
5.5 Cylinder head
5.5.1 Checking and setting the valve clearance
5.6 Cooling system
5.6.1 Checking the cooling system and heating system for leaks and damage
5.6.2 Checking the coolant level
5.6.3 Checking the concentration of the antifreeze agent in the coolant
5.6.4 Replacing the coolant
5.7 Fuel system
5.7.1 Checking the fuel system for leaks and damage
5.7.2 Checking the water separator on the fuel prefilter
5.7.3 Draining the water from the water separator in the fuel prefilter
5.7.4 Draining water and sediment from the fuel tank
5.7.5 Replacing the fuel prefilter
5.7.6 Reducing the pressure in the fuel system
5.7.7 Replacing the fuel fine filter
5.7.8 Ventilating the fuel system
5.8 Air filter
5.8.1 Checking the air filter low pressure indicator
5.8.2 Cleaning the air filter dust discharge valve
5.8.3 Replacing the dry air filter main element
5.8.4 Replacing the dry air filter safety element
5.9 Electrical system
5.9.1 Checking the batteries
5.9.2 Checking the cable connections
5.9.3 Checking the engine control unit bearings for damage
5.9.4 Checking sensors, actuators, cable holders and plugs
5.9.5 Checking the heating flange
5.9.6 Replacing the heating flange
5.10 Exhaust gas recycling
5.10.1 Checking the exhaust gas recycling (EGR) for leaks and damage
5.11 Lubricants and operating fluids
5.11.1 Fill quantities
5.11.2 Engine oil
5.11.3 Coolant
5.11.4 Fuel

6 Malfunctions
6.1 Faults – Cause – Remedy

7 Tools and devices
7.1 Tools
7.1.1 Special tool
7.1.2 Operating material
7.1.3 Diagnostic tools
7.2 Devices
7.2.1 Lifting traverse with three-point-raising (basic version)
7.2.2 Lifting traverse with two-point-raising
7.2.3 Engine assembly stand
7.2.4 Transport device

8 Appendix
8.1 Tightening torques
8.1.1 For hex bolts / cylinder screws / external hex bolts
8.1.2 For locking screws and banjo bolts
8.1.3 Standard torques for metric flange connections
8.1.4 Metric screw connection series L (light) (up to 500 bar/7252 Psi)
8.1.5 Metric screw connection series S (heavy) (up to 800 bar/11603 Psi)
8.1.6 Inch screw connection series L (light) (up to 500 bar/7252 Psi)
8.1.7 Inch screw connection series S (heavy) (up to 800 bar/11603 Psi)
8.1.8 Metric thread unit series L (light) (up to 500 bar/7252 Psi) for aluminum