Komatsu Utility 4D98E Series User Manual

5. LUBRICATION SYSTEM ........................................................................ 108
5.1 Lubrication System Diagram ............................................................................................... 108
5.2 Trochoid Pump Components ............................................................................................... 109
5.3 Disassembly(Reverse the procedure below for assembly) ................................................. 109
5.4 Servicing Points................................................................................................................... 109
5.5 Parts Inspection and Measurement......................................................................................110
5.5.1 Trochoid pump inspection and measurement.......................................................................110
6. COOLING SYSTEM.................................................................................112
6.1 Cooling Water System ..........................................................................................................112
6.2 Cooling Water Pump Components .......................................................................................112
6.3 Disassembly (Reverse the procedure below for assembly) .................................................113
6.4 Servicing Points....................................................................................................................113
7. FUEL INJECTION PUMP/GOVERNOR...................................................114
7.1 Introduction ...........................................................................................................................114
7.2 Fuel Injection Pump..............................................................................................................114
7.2.1 Fuel system diagram ............................................................................................................114
7.2.2 External view and components
.............................................................................................115
7.2.3 Disassembly proce
dure:.......................................................................................................11
5
7.2.4 Assembly procedure............................................................................................................. 116
7.2.5 Servicing point
s ....................................................................................................................116
8. TURBOCHAGER: Disassembly, inspection and reassembly.....................118
8.1 Structure and Functions........................................................................................................118
8.1.1 Main specifications ...............................................................................................................118
8.1.2 Construction .........................................................................................................................
118
8.1.3 St
ructural and functional outline ...........................................................................................119
8.1.4 Components
.........................................................................................................................120
8.2 Service Standards and Tightening Torque........................................................................... 121
8.2.1 Service standards.................................................................................................................121
8.2.2 Tightening torque
..................................................................................................................122
8.3 Periodic Inspection Procedure............................................................................................. 123
8.3.1 Periodic inspection intervals.................................................................................................123
8.3.2 Inspection procedure............................................................................................................
124
8.3.3 Waste gate valve adj
ustment procedure ..............................................................................125
8.4 Disassembly Procedure....................................................................................................... 127
8.4.1 Preparation for disassembly.................................................................................................127
8.4.2 Inspection before disassembly .............................................................................................
128
8.4.3 Disassembly.........................................................................................................................
128

Komatsu Utility 4D98E Series Specifications

General

Brand	Komatsu Utility
Model	4D98E Series
Category	Engine
Language	English