Kubota WSM 05-E4B Series Workshop Manual page 9

1.1.1 Function of closed breather ...................................................................................................... 4-1
1.2 Half-floating head cover .................................................................................................................... 4-1
1.2.1 Outline of half-floating head cover (for D1305-E4B/E4BG) ...................................................... 4-1
1.3 Governor ...........................................................................................................................................4-1
1.3.1 Structure of three lever type fork lever (for standard type) ....................................................... 4-1
1.3.2 Structure of two lever type fork lever (for BG type)................................................................... 4-3
1.4 Boost compensator ........................................................................................................................... 4-4
1.4.1 Function of boost compensator ................................................................................................ 4-4
SERVICING .......................................................................................................................................................4-5
1. Troubleshooting ........................................................................................................................................4-5
1.1 Troubleshooting for 05-E4, 05-E4BG ................................................................................................ 4-5
2. Servicing specifications ............................................................................................................................ 4-9
2.1 Servicing specification for engine...................................................................................................... 4-9
3. Tightening torques ..................................................................................................................................4-16
3.1 Tightening torques of screws, bolts and nuts for general use ......................................................... 4-16
3.2 Tightening torques of screws, bolts and nuts for special use.......................................................... 4-16
4. Checking and adjusting .......................................................................................................................... 4-17
4.1 Checking compression pressure of cylinder ................................................................................... 4-17
4.2 Checking valve clearance ............................................................................................................... 4-18
4.3 Checking engine oil pressure .......................................................................................................... 4-18
4.4 Checking fan belt tension ................................................................................................................ 4-19
4.5 Checking fan belt damage and wear............................................................................................... 4-20
4.6 Checking radiator cap air leakage................................................................................................... 4-20
4.7 Checking radiator water leakage..................................................................................................... 4-20
4.8 Checking opening temperature of thermostat valve........................................................................ 4-21
4.9 Checking injection timing ................................................................................................................ 4-21
4.10 Checking fuel tightness of pump element ..................................................................................... 4-22
4.11 Checking fuel tightness of delivery valve....................................................................................... 4-23
4.12 Checking injection nozzle spraying condition................................................................................ 4-23
4.13 Checking fuel injection pressure ................................................................................................... 4-24
4.14 Checking nozzle valve seat tightness ........................................................................................... 4-24
4.15 Adjusting injection nozzle .............................................................................................................. 4-25
4.16 Checking battery voltage............................................................................................................... 4-25
4.17 Checking battery specific gravity................................................................................................... 4-26
4.18 Checking starter motor .................................................................................................................. 4-27
4.19 Checking magnetic switch of starter ............................................................................................. 4-28
4.20 Checking magnetic switch continuity ............................................................................................ 4-28
4.21 Checking alternator on unit ........................................................................................................... 4-29
4.22 Checking voltage of glow lead terminal......................................................................................... 4-29
4.23 Checking glow plug continuity ....................................................................................................... 4-30
4.24 Checking engine stop solenoid ..................................................................................................... 4-30
5. Disassembling and assembling .............................................................................................................. 4-31
5.1 Draining oil and coolant................................................................................................................... 4-31
5.2 Removing air cleaner and muffler ................................................................................................... 4-31
5.3 Removing alternator and fan belt .................................................................................................... 4-31
5.4 Removing cylinder head cover ........................................................................................................ 4-31
5.5 Removing injection pipes ................................................................................................................ 4-32
5.6 Removing nozzle holder assembly and glow plug .......................................................................... 4-32
5.7 Removing nozzle heat seal ............................................................................................................. 4-32
5.8 Removing rocker arm and push rod ................................................................................................ 4-33
5.9 Removing cylinder head and cylinder head gasket......................................................................... 4-34
5.10 Removing tappets ......................................................................................................................... 4-34
5.11 Removing valves ........................................................................................................................... 4-35
5.12 Removing thermostat assembly .................................................................................................... 4-35
5.13 Removing oil pan and oil strainer (for extended oil pan) ............................................................... 4-35
5.14 Removing fan drive pulley ............................................................................................................. 4-36
5.15 Removing gear case ..................................................................................................................... 4-36
5.16 Removing boost compensator (equipped with R24 model) .......................................................... 4-37
05-E4B SERIES,05-E4BG SERIES
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KiSC issued 03, 2023 A