Westerbeke W-27 Service Manual

TABLE OF CONTENTS
Reassembly .......................................................................... 48 Engine Wiring Diagram.#36467 .......................................... 70
Drive Belt Adjustment ................................................ .48 Engine Wiring Schematic #36467 ....................................... 71
Admiral Control Panel ...................................................... .49
Description ...........................................................................
49
Captain Control Panel ................... ................................... .50
Description ........................................................................... 50
Control Panel Troubleshooting ......................................... .51
Tachometer/Hourmeter ........................................................ 51
Engine Wiring Diagram #36844 .......................................... 72
Engine Wiring Schematic #36844 ....................................... 73
Engine Wiring Diagram #39144 .......................................... 74
Engine Wiring Schematic #39144 ....................................... 75
Standard Hardware Torques .............................................. 76
Metric Conversions ............................................................ 77
Hourmeter Inoperative .................................................
51
Generator Information ....................................................... 78
Tachometer Inoperative ................................................
51 Use of Electric Motors ......................................................... 78
Tachometer Sticking ....................................................
51
Required Operating Speed ................................................... 78
Tachometer Inaccurate .................................................
51 Generator Frequency Adjustment ........................................ 78
Manual Starter Disconnect (Toggle Switches) ...................
52
Generator Maintenance ........................................................ 78
Troubleshooting Water Temperature
Generator Troubleshooting .................................................. 78
and
Oil Pressure Gauges ................................................... .52
WMD Generator .................................................................. 79
Control Panel - Early Models . .......................................... 53 Description ........................................................................... 79
Activation by Key Switch ....................................................
53
Disassembly ......................................................................... 79
Starter/Solenoid Service ................................................... 54
Description ........................................................................... 54
Adjustment and Repair ........................................................ 54
Inspection ............................................................................. 79
Reassembly .......................................................................... 79
WMD Generator Troubleshooting ...................................... 80
Pinion Gap Inspection .................................................. 54
No Electrical Output ............................................................ 80
No-Load Test. ............................................................... 54
Flash Field Coils .................................................................. 80
Solenoid ........................................................................ 55 Replacement of Field CoiJ(s) ............................................... 81
Starter Disassembly .............................................................. 55
Low Voltage
Output ............................................................. 81
Starter Inspection ................................................................. 56 High VOltage Output ............................................................ 82
Solenoid ........................................................................
56
Solenoid with Throttle Linkage ........................................... 82
Inspecting the Armature ............................................... 56
Brush and Brush Holder Inspection ............................. 56
Field Coil Inspection ................................................... .57
Starter Adjustment and Reassembly .................................... 57
DC Electrical System .. ....................................................... 58
Description ........................................................................... 58
Engine 12- Volt Control Circuit. ................................... 58
Charging System .................................................................. 58
Alternator Troubleshooting .................................................. 58
Checking for ~roper Voltage ........................................ 58
Battery Maintenance ............................................................ 59
WMD Generator AC Internal Wiring Diagrams .. ................ 83
WMD Generator DC Electrical System .............................. 84
WMD Generator Wiring Diagram
#24700 .......................... 84
WMD Generator Wiring Schematic
#24700 ....................... 85
BT Generator .................................................................. .... 86
Description ........................................................................... 86
BT Generator Troubleshooting ............................................. 87
Residual Voltage Check ....................................................... 89
Bridge Rectifier .................................................................... 89
Testing the Bridge Rectifier for Faults with
Glow Plugs ........................................................................... 59
Alternator/Regulator Service ............................................ 60
Description ........................................................................... 60
Alternator Troubleshooting .................................................. 60
Testing the Charging Voltage ....................................... 60
Output Test ................................................................... 61
Disassembly ......................................................................... 61
Inspection ............................................................................. 62
Diode ............................................................................ 62
Checking for
Short Circuit.. ......................................... 62
Checking for
Open Circuit ........................................... 62
Checking Diode Trio .................................................... 62
Stator ............................................................................ 63
an Ohmmeter .............................................................. 90
Internal Wiring Diagram ...................................................... 90
Component Resistance Values ............................................. 91
Models 11.0 & 12.5(A) BT .......................................... 91
Component Resistance Checks ............................................ 91
Exciter Stator Windings ............................................... 91
Exciter Rotor/Field ............................................................... 92
Main Stator Windings .......................................................... 93
Compound Transformer ....................................................... 93
Selector Switch .................................................................... 93
Bridge Rectifier Wiring ........................................................ 93
No-Load Voltage Adjustment. .............................................. 94
Voltage/Hertz Connection Bar ............................................. 94
Field Coil (Rotor) ......................................................... 63
BT Generator AC Voltage Connections ................................ 95
Checking Brush and Brush Spring .............................. 63
Generator Frequency ............................................................ 95
Checking the
Slip Ring ................................................ 63
BT Generator 6 Terminal Block .............................................. 96
Regulator .............................................................................. 63
Reassembly .......................................................................... 64
Transmissions . ................................................................... 65
Wiring Connections ............................................................. 96
BT Generator DC Electrical System ...................................... 98
BT Generator Wiring Diagram #34651 ............................... 98
DC Electrical System ......................................................... 66
BT Generator Wiring Diagram #36412 ............................
.100
Engine Wiring Diagram #24666 .......................................... 66
BT Generator Wiring Schematic #36412 ........................... 101
Engine Wiring Schematic #24666 ....................................... 67
Engine Wiring Diagram #33685 .......................................... 68
Engine Wiring Schematic #33685 ....................................... 69
Engines & Generators
2

Westerbeke W-27 Specifications

General

Brand	Westerbeke
Model	W-27
Category	Engine
Language	English