Westerbeke 42B FOUR - Page 110

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Engines & Generators

ATMG-5C

5/98

Table of Contents

Table of Contents7
Introduction9
- Product Software9
- Engine/Generator Model Designations9
- Notes, Cautions and Warnings9
- Ordering Parts/Serial Number Location9
Engine/Generator Specifications11
Testing for Overhaul12
- How to Judge Engine Overhaul Period12
  - Cause of Low Compression12
  - Measuring Compression Pressure12
- Overhaul Conditions12
  - Disassembly12
  - Reassembly13
Service Standards14
Technical Data17
- Tightening Torque17
- General Screws17
- Sealants17
Engine Troubleshooting18
Engine Parts Identification22
Cylinder Head23
- Construction23
Cylinder Head Service24
- Disassembly24
- Inspection24
- Reassembly25
Cylinder Block27
- Construction27
Cylinder Block Service29
- Disassembly29
- Inspection29
- Reassembly32
Governor37
- Description37
- Disassembly37
- Inspection37
- Reassembly and Adjustment37
Engine Shutoff38
- Engine with Manual Stop (Standard)38
- Optional Key Switch Shutoff (38B and 42B Only)38
  - Installing and Adjusting the Key Switch Shutoff Solenoid38
  - Key-Stop Solenoid System Operation Checking Procedure38
Engine Adjustments39
- Tightening the Cylinder Head39
- Adjusting Valve Clearance39
- Adjusting Fuel Injection Timing39
- Adjusting No-Load Engine Speeds40
Lubrication System Service41
- Description41
- Disassembly41
  - Oil Filter and Oil Pump41
- Inspection41
  - Oil Pump41
- Reassembly42
- Testing the Oil Pressure42
- Oil Pressure Switch42
Fuel System43
- Description43
Fuel System Service45
- Disassembly45
- Inspection46
- Reassembly46
Raw Water Cooling Circuit50
- Description50
Raw Water Pump Service51
- Pump Overhaul - Raw Water Pump PN 3363651
- Pump Overhaul- Raw Water Pump PN 2414352
Fresh Water Cooling Circuit53
- Description53
Fresh Water Cooling Service54
- Disassembly54
- Inspection54
  - Water Pump54
  - Thermostat54
- Reassembly54
  - Drive Belt Adjustment54
Admiral Control Panel55
- Description55
Captain Control Panel56
- Description56
Control Panel Troubleshooting57
- Tachometer/Hourmeter57
- Manual Starter Disconnect (Toggle Switches)58
- Troubleshooting Water Temperature and Oil Pressure Gauges58
Control Panel - Early Models59
- Activation by Key Switch59
Starter/Solenoid Service60
- Description60
- Adjustment and Repair60
- Starter Disassembly61
- Starter Inspection62
- Starter Adjustment and Reassembly63
DC Electrical System64
- Description64
  - Engine 12-Volt Control Circuit64
- Charging System64
- Alternator Troubleshooting64
  - Checking for ~Roper Voltage64
- Battery Maintenance65
- Glow Plugs65
Alternator/Regulator Service66
- Description66
- Alternator Troubleshooting66
  - Testing the Charging Voltage66
  - Output Test67
- Disassembly67
- Inspection68
- Regulator69
- Reassembly70
Transmissions71
DC Electrical System72
- Engine Wiring Diagram #2466672
- Engine Wiring Schematic #2466673
- Engine Wiring Diagram #3368574
- Engine Wiring Schematic #3368575
- Engine Wiring Diagram.#3646776
- Engine Wiring Schematic #3646777
- Engine Wiring Diagram #3684478
- Engine Wiring Schematic #3684479
- Engine Wiring Diagram #3914480
- Engine Wiring Schematic #3914481
Standard Hardware Torques82
Metric Conversions83
Generator Information84
- Use of Electric Motors84
- Required Operating Speed84
- Generator Frequency Adjustment84
- Generator Maintenance84
- Generator Troubleshooting84
WMD Generator85
- Description85
- Disassembly85
- Inspection85
- Reassembly85
WMD Generator Troubleshooting86
- No Electrical Output86
- Flash Field Coils86
- Replacement of Field Coij(S)87
- Low Voltage Output87
- High Voltage Output88
- Solenoid with Throttle Linkage88
WMD Generator AC Internal Wiring Diagrams89
WMD Generator DC Electrical System90
- WMD Generator Wiring Diagram #2470090
- WMD Generator Wiring Schematic #2470091
BT Generator92
- Description92
BT Generator Troubleshooting93
- Residual Voltage Check95
- Bridge Rectifier95
  - Testing the Bridge Rectifier for Faults with an Ohmmeter96
- Internal Wiring Diagram96
- Component Resistance Values97
  - Models 11.0 & 12.5(A) BT97
- Component Resistance Checks97
  - Exciter Stator Windings97
- Exciter Rotor/Field98
- Main Stator Windings99
- Compound Transformer99
- Selector Switch99
- Bridge Rectifier Wiring99
- No-Load Voltage Adjustment100
- Voltage/Hertz Connection Bar100
BT Generator AC Voltage Connections101
- Generator Frequency101
BT Generator 6 Terminal Block102
- Wiring Connections102
BT Generator DC Electrical System104
- BT Generator Wiring Diagram #34651104
- BT Generator Wiring Diagram #36412106
- BT Generator Wiring Schematic #36412107

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