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Westerbeke 6.5 MCG - Service Manual

Westerbeke 6.5 MCG
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SERVICE
MANUAL
6.5
MCG
60HZ
. 5.2
MCG
50HZ
5.0
MCG
60HZ
4.2
MCG
50HZ
/tlu/ti-port
ELECTRONIC
FUEL
INJECTION
MARINE
GASOLINE
GENERATOR
Single
Phase
PUBLICATION.
NO:
055743!
REVISION
1 .
NOVEMBER.
2017.

Table of Contents

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Summary

TESTING FOR OVERHAUL

HOW TO DETERMINE ENGINE OVERHAUL PERIOD

Guide to determining when an engine needs overhaul based on symptoms.

ENGINE OVERHAUL

Detailed information on major engine components and systems for overhaul.

DISASSEMBLY

Instructions for engine disassembly and cleaning prior to overhaul.

TESTING THE ENGINE COMPRESSION

COMPRESSION TEST PROCEDURES

Step-by-step guide for performing engine compression tests.

ENGINE TROUBLESHOOTING

DISASSEMBLY PROCEDURES

PREPARATION FOR DISASSEMBLY

Steps for preparing the engine and components before disassembly.

REMOVE EXTERIOR COMPONENTS

Instructions for removing external engine parts prior to major disassembly.

ENGINE ASSEMBLY

Sealants and Lubricants

Recommended sealants and lubricants for engine assembly.

Bolts and Fasteners

Guidelines for using bolts and fasteners during engine assembly.

GENERATOR;ENGINE DISASSEMBLY

SEPERATING THE GENERATOR FROM THE ENGINE

Step-by-step procedure for separating the generator from the engine.

ENGINE DISASSEMBLY

THERMOSTAT

Instructions for removing and inspecting the thermostat assembly.

OIL FILTER ASSEMBLY

Procedure for removing and cleaning the oil filter assembly.

DISTRIBUTER

Steps for detaching and removing the distributor and spark plugs.

TIMING BELT DISASSEMBLY

INSTRUCTIONS FOR INSPECTING AND REPLACING THE TIMING BELT

Guidelines for timing belt maintenance, inspection, and replacement.

Timing Belt Removal

Procedure for removing the timing belt.

ENGINE TIMING BELT

Timing Belt Installation

Detailed procedure for installing the timing belt.

CYLINDER HEAD AND VALVES

REMOVING THE CYLINDER HEAD FROM THE CYLINDER BLOCK

Step-by-step guide for removing the cylinder head.

VALVE ASSEMBLY INSPECTION

Inspection procedures for valve stems, seats, and springs.

CYLINDER HEAD

Cylinder Head Bolts

Tightening sequence and torque specifications for cylinder head bolts.

CAMSHAFT AND ROCKER ARMS

INSPECTING THE CAMSHAFT

Procedures for inspecting camshaft for cracks, journals, and height.

PISTONS AND CONNECTING RODS

REMOVING THE CONNECTING RODS;PISTONS

Procedure for removing connecting rods and pistons from the engine.

Pistons

Inspection of pistons for wear, seizure, cracks, and bore clearance.

Connecting Rod Bearing

Inspection and oil clearance measurement for connecting rod bearings.

PISTONS AND CONNECTING RODS

Piston Connecting Rod, Piston

Assembly of piston, connecting rod, and piston pin.

PISTONS AND CONNECTING RODS

Installing the Piston Assembly

Steps for installing the piston and connecting rod assembly into the cylinder.

Crankshaft;Bearing Assembly

Guidance on selecting and installing crankshaft and connecting rod bearings.

FRONT CASE; COUNTERBALANCE SHAFT AND OIL PAN

COUNTERBALANCE SHAFT - INSPECTION

Inspection of counterbalance shaft journals and oil clearance.

FRONT CASE; COUNTERBALANCE SHAFT AND OIL PUMP

Front Case Assembly

Steps for installing the front case assembly.

Oil Pump Driven Gear

Installation of the oil pump driven gear.

CRANKSHAFT, BEARING AND OIL SEAL

MEASURE THE CRANKSHAFT OIL CLEARANCE

Using a plastic gauge to measure crankshaft oil clearance.

CYLINDER BLOCK INSPECTION AND PISTON CLEARANCE

BORING THE CYLINDER

Procedure for boring the cylinder to match oversize pistons.

COOLANT CIRCULATING PUMP

REINSTALLING THE COOLANT PUMP

Procedure for reinstalling the coolant pump with a new gasket.

EXHAUST MANIFOLD; HEAT EXCHANGER

EXHAUST MANIFOLD

Inspection and assembly of the exhaust manifold and elbow.

HEAT EXCHANGER

Inspection and servicing of the heat exchanger during overhaul.

DISTRIBUTOR

DISTRIBUTOR CAP INSPECTION

Points to check for distributor cap cracks, wear, and damage.

RAW WATER PUMP (PN.042026)

Disassembly

Step-by-step procedure for disassembling the raw water pump.

Reassembly

Procedure for reassembling the raw water pump.

TIGHTENING TORQUE SPECIFICATIONS

SPECIAL TOOLS - ENGINE

SERVICE DATA; STANDARDS AND LIMITS - BCG ENGINE;GENERATOR

ENGINE ADJUSTMENTS

SPEED SENSOR (Hall Effect) #054723

Adjustment procedure for the speed sensor.

IGNITION TIMING

Procedure for setting the ignition timing using a timing light.

VALVE CLEARANCE ADJUSTMENT

Steps for adjusting valve clearances.

ENGINE ADJUSTMENTS

SPARK PLUGS

Maintenance and inspection of spark plugs.

DRIVE BELT ADJUSTMENT

Procedure for adjusting the drive belt tension.

BLEEDING THE FUEL SYSTEM

OIL PRESSURE

TESTING THE OIL PRESSURE SENDER

Procedure for testing the oil pressure sender's resistance.

MEASURING EXHAUST BACK PRESSURE

Procedure for measuring exhaust back pressure.

TESTING THE IGNITION COIL

TESTING THE IGNITER

Procedure for testing the igniter's resistance.

TESTING THE PICK-UP COIL

Resistance test for the pick-up coil.

TESTING THE BATTERY CHARGING CIRCUIT

Testing the Battery Charger

Procedure for testing the battery charger output voltage.

Testing the Battery Charging Circuit

Testing the bridge rectifier and AC winding resistance.

STARTER MOTOR

TROUBLESHOOTING;INSPECTION

General troubleshooting and inspection tips for the starter motor.

TESTING WITH AN ELECTRICAL JUMPER

Using a jumper to test the starter motor.

STARTER MOTOR SERVICE

ARMATURE COIL

Testing the armature coil for continuity.

STATOR

Measuring stator coil resistance and checking continuity.

OVER-RUNNING CLUTCH

Inspecting the over-running clutch for wear and damage.

STARTER MOTOR SERVICE

COMMUTATOR AND MICA

Checking commutator wear, O.D., and mica undercut.

ELECTRONIC CONTROL UNIT (ECU)

Setting;Changing Engine Speed

Procedure for setting engine speed for 50Hz or 60Hz operation.

REPLACING THE ECU

Steps for removing and replacing the Electronic Control Unit.

COMPONENT STATIC TESTING

MAP SENSOR

Testing the Manifold Absolute Pressure sensor's voltage output and resistance.

STEPPER MOTOR

Resistance test for the stepper motor coils.

COMPONENT TESTING

TESTING THE OIL PRESSURE SENSOR

Procedure for testing the oil pressure sensor's resistance.

TESTING THE EXHAUST TEMPERATURE SWITCH

Testing the exhaust temperature switch for continuity.

HIGH;LOW RPM SHUTDOWN

How the ECU monitors and reacts to engine over/underspeed.

TESTING THE OXYGEN SENSOR

Resistance test for the Wide Band O2 Sensor.

COMPONENT TESTING

SPEED SENSOR (Hall Effect)

Checking AC voltage output and coil windings of the speed sensor.

TESTING THE FUEL PRESSURE PUMP

Static testing of fuel pumps for winding integrity and pressure.

COMPONENT TESTING

AIR AND COOLANT TEMPERATURE SENSORS

Testing air and coolant temperature sensors for resistance.

FUEL INJECTOR

Testing the fuel injector coil resistance and electrical function.

TESTING SYSTEM FUEL PRESSURE

Procedure for testing system fuel pressure.

ENGINE TROUBLESHOOTING;SOFTWARE DIAGNOSTICS

PC INTERFACE SOFTWARE (EC 11)

Overview of the PC interface software for diagnostics and monitoring.

SOFTWARE DIAGNOSTICS

ENGINE WARNINGS IDLE STATE

Logged warnings when the generator is in idle state.

SOFTWARE DIAGNOSTICS

ENGINE SHUTDOWNS RUN STATE

Engine shutdowns logged when the generator is running.

SOFTWARE DIAGNOSTICS

ENGINE WARNINGS RUN STATE

Warnings logged when the generator is started and running.

ON-BOARD DIAGNOSTICS 1 PC INTERFACE SOFTWARE

ENGINE CONDITIONS

Monitoring engine operating conditions via PC interface.

WIDEBAND 02 SENSOR CONTROL

Monitoring Wideband O2 sensor states and heater status.

ON-BOARD DIAGNOSTICS 1 PC INTERFACE SOFTWARE

EMISSIONS RECORDS DISPLAY

Displaying and clearing emissions records stored in the ECU.

BC GENERATOR SINGLE PHASE

MOTOR DATA

Information on motor starting current requirements.

AC TERMINAL CONNECTIONS

Diagram of AC terminal connections for different voltage configurations.

Generator Maintenance

General maintenance tips for the generator.

BC GENERATOR SINGLE PHASE

GENERATOR OUTPUT

Procedure for confirming generator output capacity.

INTRODUCTION TO TROUBLESHOOTING

Overview of basic troubleshooting procedures for BC generators.

BC GENERATOR COMPONENTS

CONTROL BOX INTERNAL COMPONENTS TYPICAL ASSEMBLY

Diagram of typical internal components within the control box.

BC GENERATORS TROUBLESHOOTING

NO AC VOLTAGE OUTPUT

Troubleshooting steps for generators with no AC voltage output.

EXCITING THE GENERATOR

Procedure for exciting the generator using 12 VDC.

BC GENERATORS TROUBLESHOOTING

TESTING THE DIODES

Procedure for testing generator diodes using an ohmmeter.

AC;HERTZ CONVERSION

Steps for converting generator from 60Hz to 50Hz operation.

BC GENERATORS TROUBLESHOOTING CHART

BC GENERATORS TROUBLESHOOTING

TESTING THE EXCITER WINDINGS

Measuring AC voltage across capacitor connections for exciter winding integrity.

BC GENERATORS TROUBLESHOOTING

TESTING CONTINUITY

Quick field check for capacitor continuity.

TESTING THE CAPACITOR(S)

Verifying capacitor ratings and replacement guidelines.

BC GENERATORS TROUBLESHOOTING

TESTING THE BC ROTOR

Testing the BC rotor's field windings and continuity.

SHORE POWER TRANSFER SWITCH

SINGLE LINE 120 VOLT SYSTEM

Wiring diagram for a single line 120 volt system.

230 VOLT;50 HERTZ TWO WIRE CONFIGURATION

Wiring configuration for 230V/50Hz two-wire systems.

Switching Shore Power to Generator Power

Guidance on switching between shore power and generator power.

WIRING DIAGRAM #55536

IGNITION SYSTEM COMPONENTS

Wiring diagram for ignition system components.

WIRING DIAGRAM #55536

ECU CONNECTIONS

Wiring connections for the Electronic Control Unit (ECU).

DC AUXILLIARY POWER ADAPTER

REMOTE OIL FILTER (OPTIONAL) PN.040078

INSTALLATION

Instructions for installing the optional remote oil filter kit.

MCG GENERATOR SPECIFICATIONS

ENGINE SPECIFICATIONS

Key specifications for the generator's engine.

COOLING SYSTEM

Specifications for the generator's cooling system.

FUEL SYSTEM

Specifications for the generator's fuel system.

ELECTRICAL SYSTEM

Specifications for the generator's electrical system components.

AC GENERATOR (Single Phase)

Specifications for the single-phase AC generator output.

IGNITION SYSTEM

Specifications for the generator's ignition system.

STANDARD HARDWARE TORQUES

DECIMAL TO METRIC EQUIVALENT CHART

Summary

TESTING FOR OVERHAUL

HOW TO DETERMINE ENGINE OVERHAUL PERIOD

Guide to determining when an engine needs overhaul based on symptoms.

ENGINE OVERHAUL

Detailed information on major engine components and systems for overhaul.

DISASSEMBLY

Instructions for engine disassembly and cleaning prior to overhaul.

TESTING THE ENGINE COMPRESSION

COMPRESSION TEST PROCEDURES

Step-by-step guide for performing engine compression tests.

ENGINE TROUBLESHOOTING

DISASSEMBLY PROCEDURES

PREPARATION FOR DISASSEMBLY

Steps for preparing the engine and components before disassembly.

REMOVE EXTERIOR COMPONENTS

Instructions for removing external engine parts prior to major disassembly.

ENGINE ASSEMBLY

Sealants and Lubricants

Recommended sealants and lubricants for engine assembly.

Bolts and Fasteners

Guidelines for using bolts and fasteners during engine assembly.

GENERATOR;ENGINE DISASSEMBLY

SEPERATING THE GENERATOR FROM THE ENGINE

Step-by-step procedure for separating the generator from the engine.

ENGINE DISASSEMBLY

THERMOSTAT

Instructions for removing and inspecting the thermostat assembly.

OIL FILTER ASSEMBLY

Procedure for removing and cleaning the oil filter assembly.

DISTRIBUTER

Steps for detaching and removing the distributor and spark plugs.

TIMING BELT DISASSEMBLY

INSTRUCTIONS FOR INSPECTING AND REPLACING THE TIMING BELT

Guidelines for timing belt maintenance, inspection, and replacement.

Timing Belt Removal

Procedure for removing the timing belt.

ENGINE TIMING BELT

Timing Belt Installation

Detailed procedure for installing the timing belt.

CYLINDER HEAD AND VALVES

REMOVING THE CYLINDER HEAD FROM THE CYLINDER BLOCK

Step-by-step guide for removing the cylinder head.

VALVE ASSEMBLY INSPECTION

Inspection procedures for valve stems, seats, and springs.

CYLINDER HEAD

Cylinder Head Bolts

Tightening sequence and torque specifications for cylinder head bolts.

CAMSHAFT AND ROCKER ARMS

INSPECTING THE CAMSHAFT

Procedures for inspecting camshaft for cracks, journals, and height.

PISTONS AND CONNECTING RODS

REMOVING THE CONNECTING RODS;PISTONS

Procedure for removing connecting rods and pistons from the engine.

Pistons

Inspection of pistons for wear, seizure, cracks, and bore clearance.

Connecting Rod Bearing

Inspection and oil clearance measurement for connecting rod bearings.

PISTONS AND CONNECTING RODS

Piston Connecting Rod, Piston

Assembly of piston, connecting rod, and piston pin.

PISTONS AND CONNECTING RODS

Installing the Piston Assembly

Steps for installing the piston and connecting rod assembly into the cylinder.

Crankshaft;Bearing Assembly

Guidance on selecting and installing crankshaft and connecting rod bearings.

FRONT CASE; COUNTERBALANCE SHAFT AND OIL PAN

COUNTERBALANCE SHAFT - INSPECTION

Inspection of counterbalance shaft journals and oil clearance.

FRONT CASE; COUNTERBALANCE SHAFT AND OIL PUMP

Front Case Assembly

Steps for installing the front case assembly.

Oil Pump Driven Gear

Installation of the oil pump driven gear.

CRANKSHAFT, BEARING AND OIL SEAL

MEASURE THE CRANKSHAFT OIL CLEARANCE

Using a plastic gauge to measure crankshaft oil clearance.

CYLINDER BLOCK INSPECTION AND PISTON CLEARANCE

BORING THE CYLINDER

Procedure for boring the cylinder to match oversize pistons.

COOLANT CIRCULATING PUMP

REINSTALLING THE COOLANT PUMP

Procedure for reinstalling the coolant pump with a new gasket.

EXHAUST MANIFOLD; HEAT EXCHANGER

EXHAUST MANIFOLD

Inspection and assembly of the exhaust manifold and elbow.

HEAT EXCHANGER

Inspection and servicing of the heat exchanger during overhaul.

DISTRIBUTOR

DISTRIBUTOR CAP INSPECTION

Points to check for distributor cap cracks, wear, and damage.

RAW WATER PUMP (PN.042026)

Disassembly

Step-by-step procedure for disassembling the raw water pump.

Reassembly

Procedure for reassembling the raw water pump.

TIGHTENING TORQUE SPECIFICATIONS

SPECIAL TOOLS - ENGINE

SERVICE DATA; STANDARDS AND LIMITS - BCG ENGINE;GENERATOR

ENGINE ADJUSTMENTS

SPEED SENSOR (Hall Effect) #054723

Adjustment procedure for the speed sensor.

IGNITION TIMING

Procedure for setting the ignition timing using a timing light.

VALVE CLEARANCE ADJUSTMENT

Steps for adjusting valve clearances.

ENGINE ADJUSTMENTS

SPARK PLUGS

Maintenance and inspection of spark plugs.

DRIVE BELT ADJUSTMENT

Procedure for adjusting the drive belt tension.

BLEEDING THE FUEL SYSTEM

OIL PRESSURE

TESTING THE OIL PRESSURE SENDER

Procedure for testing the oil pressure sender's resistance.

MEASURING EXHAUST BACK PRESSURE

Procedure for measuring exhaust back pressure.

TESTING THE IGNITION COIL

TESTING THE IGNITER

Procedure for testing the igniter's resistance.

TESTING THE PICK-UP COIL

Resistance test for the pick-up coil.

TESTING THE BATTERY CHARGING CIRCUIT

Testing the Battery Charger

Procedure for testing the battery charger output voltage.

Testing the Battery Charging Circuit

Testing the bridge rectifier and AC winding resistance.

STARTER MOTOR

TROUBLESHOOTING;INSPECTION

General troubleshooting and inspection tips for the starter motor.

TESTING WITH AN ELECTRICAL JUMPER

Using a jumper to test the starter motor.

STARTER MOTOR SERVICE

ARMATURE COIL

Testing the armature coil for continuity.

STATOR

Measuring stator coil resistance and checking continuity.

OVER-RUNNING CLUTCH

Inspecting the over-running clutch for wear and damage.

STARTER MOTOR SERVICE

COMMUTATOR AND MICA

Checking commutator wear, O.D., and mica undercut.

ELECTRONIC CONTROL UNIT (ECU)

Setting;Changing Engine Speed

Procedure for setting engine speed for 50Hz or 60Hz operation.

REPLACING THE ECU

Steps for removing and replacing the Electronic Control Unit.

COMPONENT STATIC TESTING

MAP SENSOR

Testing the Manifold Absolute Pressure sensor's voltage output and resistance.

STEPPER MOTOR

Resistance test for the stepper motor coils.

COMPONENT TESTING

TESTING THE OIL PRESSURE SENSOR

Procedure for testing the oil pressure sensor's resistance.

TESTING THE EXHAUST TEMPERATURE SWITCH

Testing the exhaust temperature switch for continuity.

HIGH;LOW RPM SHUTDOWN

How the ECU monitors and reacts to engine over/underspeed.

TESTING THE OXYGEN SENSOR

Resistance test for the Wide Band O2 Sensor.

COMPONENT TESTING

SPEED SENSOR (Hall Effect)

Checking AC voltage output and coil windings of the speed sensor.

TESTING THE FUEL PRESSURE PUMP

Static testing of fuel pumps for winding integrity and pressure.

COMPONENT TESTING

AIR AND COOLANT TEMPERATURE SENSORS

Testing air and coolant temperature sensors for resistance.

FUEL INJECTOR

Testing the fuel injector coil resistance and electrical function.

TESTING SYSTEM FUEL PRESSURE

Procedure for testing system fuel pressure.

ENGINE TROUBLESHOOTING;SOFTWARE DIAGNOSTICS

PC INTERFACE SOFTWARE (EC 11)

Overview of the PC interface software for diagnostics and monitoring.

SOFTWARE DIAGNOSTICS

ENGINE WARNINGS IDLE STATE

Logged warnings when the generator is in idle state.

SOFTWARE DIAGNOSTICS

ENGINE SHUTDOWNS RUN STATE

Engine shutdowns logged when the generator is running.

SOFTWARE DIAGNOSTICS

ENGINE WARNINGS RUN STATE

Warnings logged when the generator is started and running.

ON-BOARD DIAGNOSTICS 1 PC INTERFACE SOFTWARE

ENGINE CONDITIONS

Monitoring engine operating conditions via PC interface.

WIDEBAND 02 SENSOR CONTROL

Monitoring Wideband O2 sensor states and heater status.

ON-BOARD DIAGNOSTICS 1 PC INTERFACE SOFTWARE

EMISSIONS RECORDS DISPLAY

Displaying and clearing emissions records stored in the ECU.

BC GENERATOR SINGLE PHASE

MOTOR DATA

Information on motor starting current requirements.

AC TERMINAL CONNECTIONS

Diagram of AC terminal connections for different voltage configurations.

Generator Maintenance

General maintenance tips for the generator.

BC GENERATOR SINGLE PHASE

GENERATOR OUTPUT

Procedure for confirming generator output capacity.

INTRODUCTION TO TROUBLESHOOTING

Overview of basic troubleshooting procedures for BC generators.

BC GENERATOR COMPONENTS

CONTROL BOX INTERNAL COMPONENTS TYPICAL ASSEMBLY

Diagram of typical internal components within the control box.

BC GENERATORS TROUBLESHOOTING

NO AC VOLTAGE OUTPUT

Troubleshooting steps for generators with no AC voltage output.

EXCITING THE GENERATOR

Procedure for exciting the generator using 12 VDC.

BC GENERATORS TROUBLESHOOTING

TESTING THE DIODES

Procedure for testing generator diodes using an ohmmeter.

AC;HERTZ CONVERSION

Steps for converting generator from 60Hz to 50Hz operation.

BC GENERATORS TROUBLESHOOTING CHART

BC GENERATORS TROUBLESHOOTING

TESTING THE EXCITER WINDINGS

Measuring AC voltage across capacitor connections for exciter winding integrity.

BC GENERATORS TROUBLESHOOTING

TESTING CONTINUITY

Quick field check for capacitor continuity.

TESTING THE CAPACITOR(S)

Verifying capacitor ratings and replacement guidelines.

BC GENERATORS TROUBLESHOOTING

TESTING THE BC ROTOR

Testing the BC rotor's field windings and continuity.

SHORE POWER TRANSFER SWITCH

SINGLE LINE 120 VOLT SYSTEM

Wiring diagram for a single line 120 volt system.

230 VOLT;50 HERTZ TWO WIRE CONFIGURATION

Wiring configuration for 230V/50Hz two-wire systems.

Switching Shore Power to Generator Power

Guidance on switching between shore power and generator power.

WIRING DIAGRAM #55536

IGNITION SYSTEM COMPONENTS

Wiring diagram for ignition system components.

WIRING DIAGRAM #55536

ECU CONNECTIONS

Wiring connections for the Electronic Control Unit (ECU).

DC AUXILLIARY POWER ADAPTER

REMOTE OIL FILTER (OPTIONAL) PN.040078

INSTALLATION

Instructions for installing the optional remote oil filter kit.

MCG GENERATOR SPECIFICATIONS

ENGINE SPECIFICATIONS

Key specifications for the generator's engine.

COOLING SYSTEM

Specifications for the generator's cooling system.

FUEL SYSTEM

Specifications for the generator's fuel system.

ELECTRICAL SYSTEM

Specifications for the generator's electrical system components.

AC GENERATOR (Single Phase)

Specifications for the single-phase AC generator output.

IGNITION SYSTEM

Specifications for the generator's ignition system.

STANDARD HARDWARE TORQUES

DECIMAL TO METRIC EQUIVALENT CHART

Westerbeke 6.5 MCG Specifications

General IconGeneral
Power Output6.5 kW
Voltage Output120/240V
Frequency60 Hz
Cylinders2
Starting SystemElectric

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