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Wacker Neuson 50Z3 Track excavator Service Manual and Parts List Manual
Content:
OPERATION
Important information on this service manual
Identification of warnings and dangers
Designated use and exemption from liability
Type labels and component numbers
Machine: overview
Cab overview
Cab (legend)
Instrument panel up to serial no. AC02877: overview
Instrument panel up to serial no. AC02877: legend
Instrument panel from serial no. AC02893 to serial no. AD07125: overview
Instrument panel from serial no. AC02893 to serial no. AD07125: legend
Control elements 50Z3 (from serial no. AH00579)
Engine compartment up to serial no. AD07125: overview
Engine compartment (from serial no. AH00579): overview
Chassis overview
Tilting the cab
Summer/winter operation
Preheated fresh air
Turning the auxiliary hydraulics/boom swivel pedal around
SPECIFICATIONS
Chassis
Engine
Fuel injection pump
Engine capacities
Engine tightening torques
Hydraulic system
Auxiliary hydraulics oil flow
Screwable hose burst valve
Undercarriage and swivel unit
Stabiliser blade
Electric system
Fuse box in instrument panel
Main fuse box with relays underneath the cab
Relays
Noise levels
Vibration
Coolant compound table
Model-specific tightening torques
General tightening torques
Tightening torques for hydraulic screw connections (dry assembly)
Tightening torques for high-resistance screw connections
Dimensions model 50Z3
Lift capacity table 50Z3
Lift capacity table 50Z3 with long stick
Lift capacity table 50Z3 with counterweight
Lift capacity table 50Z3 with long stick and counterweight
Kinematics
Attachments
MAINTENANCE
Fluids and lubricants
Additional oil change and filter replacement (hydraulics)
Maintenance label
Explanation of symbols on the maintenance label
Maintenance plan (overview)
Service package
Up to serial no.: AD07125
From serial no.: AH00579
Introduction
Fuel system
Specific safety instructions
Refuelling
Stationary fuel pumps
Diesel fuel specification
Bleeding the fuel system
Emptying the fuel tank
Fuel prefilter with water separator
Replacing the fuel filter
Engine lubrication system
Checking the oil level
Filling up engine oil
Changing engine oil
Replacing the engine oil filter cartridge
Cooling system
Specific safety instructions
Checking/filling up coolant
Draining coolant
Air filter
Replacing the filter
Functional check once a week of the dust valve
V-belt
Checking V-belt tension
Retightening the V-belt
Checking the V-belt of the air conditioning system
Tightening the V-belt of the air conditioning system
Pressure check
General
Checking pilot control pressure
Pressure check of variable displacement pump P1
Pressure check of variable displacement pump P2
Pressure check of gear pump P3
Secondary pressure limiting valve of the gear motor
Measuring ports: overview
Primary pressure limiting valves
Test report
Hydraulic system
Specific safety instructions
Checking the hydraulic oil level
Filling up hydraulic oil
Changing hydraulic oil
Monitoring the hydraulic oil reflux filter
Checking hydraulic pressure lines
Travelling drive
Checking the oil level and filling up oil
Draining oil
Chains
Checking chain tension
Setting the chains
Lubrication work
Stabiliser blade
Lubrication points on the swivelling console
Boom lubrication points
Lubrication points on the stick
Lubrication strip
Maintenance of attachments
Electric system
Specific safety instructions
Service and maintenance work at regular intervals
Instructions concerning specific components
Alternator
Battery
Cab
Replacing the cab filter
General maintenance work
Cleaning
General instructions for all areas of the machine
Inside the cab
Exterior of the machine
Engine compartment
Screw connections and attachments
Pivots and hinges
ENGINE
Engine 4TNV88-PNS (up to serial no. AD07125): overview
Fuel system
Checking and adjusting valve clearance
Tightening order for cylinder head bolts
Checking the injection nozzles
Pressure check
Checking the nozzle jet
Injection time
Checking injection time
Setting injection time
Replacement of fuel injection pump
Adjusting engine revs
Compression
Checking the coolant thermostat
Checking the thermal switch
Oil pressure switch
Checking the coolant circuit
Engine 4TNV88-PNS (from serial no. AH00579): overview
Fuel system
Removing the valve cover
Checking and adjusting valve clearance
Tightening order for cylinder head bolts
Checking the injection nozzles
Pressure check
Checking the nozzle jet
Injection time
Checking injection time
Setting injection time
Replacement of fuel injection pump
Adjusting engine revs
Compression
Checking the coolant thermostat
Checking the thermal switch
Oil pressure switch
Checking the coolant circuit
Engine trouble
HYDRAULIC SYSTEM
Hydraulic pump PVD-2B-44BP-16G5-4713F (up to AD07125)
PVD-2B-41BP-16G5-4713F (from AH00579)
Pump unit: exploded view
Pilot oil supply unit
Main valve block
Ports
Legend
Main valve block diagram
Pressure limiting valves
Pump assignment
Drive counterbalancing system
Pump assignment for drive counterbalancing
Drive counterbalancing system with boom and right-hand side drive activation
Regeneration - stick section
Bucket pre-tension
Flow rate adjustment of auxiliary hydraulics
Pilot valves
Joystick
Pilot valve (driving)
Pilot valve for auxiliary hydraulics
Pilot valve for stabiliser blade
Valves
7/2 directional valve (changeover valve)
4/3 directional valve
Shuttle valve block
Changeover valve for SAE/ISO controls (option)
Travelling drive
Function
2nd speed range function
Swivel unit
Parking brake/multidisc brake function
Swivel joint
Breather filter
Troubleshooting in the hydraulic system
Hydraulics diagram A4
Hydraulics diagram (legend)
Hydraulics diagram 50Z3 A3
Options diagram 1
Options diagram 2
Main valve block diagram 50Z3 A3
ELECTRIC SYSTEM
Ohms Law (current, voltage, resistance); power
Measuring equipment, measuring methods
Cable colour coding
Relays
Use, mode of function
Electric units
Fuse box in instrument panel
Main fuse box with relays
Relays
Socket
Joystick tip switches
Joystick (left)
Joystick (right)
Instrument panel overview
Switch overview (up to serial no. AD07125)
Switch overview (from serial no. AH00579)
Alternator
Starter
Wiring diagram A4 legend up to serial no. AC02889
Wiring diagram A4 up to serial no. AC02889
Wiring diagram A4 legend from serial no. AC02890
Wiring diagram A4 from serial no. AC02890
Engine - chassis wiring harness A4 (legend)
Engine - chassis wiring harness A4
Wiring harness 1000109630 switches A4 up to serial no. AC02889: legend
Wiring harness 1000109630 switches A4 up to serial no. AC02889
Wiring harness switches A4 from serial no. AC02890 (legend)
Wiring harness switches A4 from serial no. AC02890
Cab roof wiring harness
Armrest wiring harness
Boom working light wiring harness
Wiring diagram A3 up to serial no. AC02889 (legend)
Wiring diagram A3 up to serial no. AC02889
Wiring diagram A3 legend from serial no. AC02890
Wiring diagram A3 from serial no. AC02890
Engine - chassis wiring harness A3 (legend)
Engine - chassis wiring harness A3
Wiring harness 1000109630 switches A3 up to serial no. AC02889 (legend)
Wiring harness 1000109630 switches A3 up to serial no. AC02889
Wiring harness switches A3 from serial no. AC02890 (legend)
Wiring harness switches A3 from serial no. AC02890
Cab roof wiring harness A3
Armrest wiring harness A3
Boom working light wiring harness A3
OPTIONS
Air conditioning
Specific safety instructions
Specifications
Installation overview
Components
Filling up the air conditioning system
Maintenance
Troubleshooting
Air-suspension seat
Ports
Counterweight
Specifications
Long stick
Specifications
Control circuit (pipework) connections for grab
3rd control circuit connections
Auxiliary hydraulics connections
Quickhitch couplings
Attachments
Fuel-filling pump
Ports
Central lubrication system
Position
Ports
Function
Adjusting breaks and lubrication times
Repair in case of clogging
Service valve
Function
Safe load indicator D (safety valve for boom)
Position
Function
Wiring diagram
Safe load indicator F (safety valves for boom and stick)
Position
Function
Wiring diagram
3rd control circuit
Function
Diagram
Electric auxiliary hydraulics
Function
Auxiliary hydraulics shock cartridge
3rd control circuit shock cartridge
Drive interlock (antitheft protection)
Position
Disabling the drive interlock
Enabling the drive interlock
Programming
Quickhitch
Automatic idling speed feature
Function
Diagram
Wiring harness
Proportional controls
Function
Ports
Overview
Wiring harness
Control unit
Control valve plug assignment
Safety features
Measures to be taken in case of malfunctions
Diagnosis display
Automatic revs setting (Tier 3A from AH00579)
Function
Installation
& Parts List Manual
File Data
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