Wacker Neuson 28Z3 Service Manual

I-2 SHB 28Z3 EN - Edition 2.0 * 28Z3s20IVZ.fm
Explanation of symbols on the maintenance label ............................................. 3-5
Maintenance plan (overview) ................................................................................... 3-7
Service package .................................................................................................... 3-11
Introduction ............................................................................................................ 3-11
Safety-relevant parts .............................................................................................. 3-11
Fuel system ............................................................................................................ 3-12
Refuelling ......................................................................................................... 3-13
Emptying the fuel tank ..................................................................................... 3-13
Stationary fuel pumps ...................................................................................... 3-14
Diesel fuel specification ................................................................................... 3-14
Bleeding the fuel system .................................................................................. 3-14
Water separator ............................................................................................... 3-15
Replacing the fuel filter .................................................................................... 3-16
Tank for washer system ................................................................................... 3-16
Engine lubrication system ...................................................................................... 3-17
Checking the oil level ....................................................................................... 3-17
Filling up engine oil .......................................................................................... 3-18
Changing engine oil ......................................................................................... 3-19
Replacing the engine oil filter cartridge ............................................................ 3-20
Engine and hydraulics cooling system ................................................................... 3-21
Specific safety instructions .............................................................................. 3-21
Checking/filling up coolant ............................................................................... 3-22
Checking the coolant level ............................................................................... 3-22
Filling up coolant .............................................................................................. 3-23
Draining coolant ............................................................................................... 3-23
Air filter ................................................................................................................... 3-24
Replacing air filter elements ............................................................................ 3-24
Air intake .......................................................................................................... 3-26
Change cab air filter ............................................................................................... 3-27
V-belt ...................................................................................................................... 3-28
Checking V-belt tension ................................................................................... 3-28
Retightening the V-belt .................................................................................... 3-29
Pressure check ...................................................................................................... 3-31
General ............................................................................................................ 3-31
Overview of measuring ports (up to serial number AG02712) ......................... 3-31
Overview of measuring ports (from serial number AG02713) ......................... 3-31
Checking pilot control pressure ....................................................................... 3-32
Pressure check of variable displacement pump P1 ......................................... 3-33
Pressure check of variable displacement pump P2 ......................................... 3-34
Pressure check of gear pump P3 .................................................................... 3-35
Secondary pressure limiting valve of the gear motor ....................................... 3-36
Primary pressure limiting valves ...................................................................... 3-36
Test report ............................................................................................................. 3-37
Hydraulic system .................................................................................................... 3-41
Specific safety instructions .............................................................................. 3-41
Checking the hydraulic oil level ....................................................................... 3-42
Filling up hydraulic oil ...................................................................................... 3-43
Changing hydraulic oil ..................................................................................... 3-44
Monitoring the hydraulic oil return filter ............................................................ 3-44
Replacing the hydraulic oil filter ....................................................................... 3-45
Draining condensation water from the hydraulic oil tank ................................. 3-45
Important information for the use of biodegradable oil .................................... 3-46
Checking hydraulic pressure lines ................................................................... 3-47
Pilot valve ............................................................................................................... 3-48
Travelling drive ....................................................................................................... 3-49
Checking the oil level and filling up oil ............................................................. 3-49

Wacker Neuson 28Z3 Specifications

General

Brand	Wacker Neuson
Model	28Z3
Category	Excavators
Language	English