MS1055 Vanguard 3-Cylinder OHV LC Diesel BRIGGS & STRATTON.pdf

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The information, procedures and specifications provided in this repair manual are current as of the date of

publication and subject to change without notice. Appropriate changes will be included in the next revision of this

manual.

Mnsd9 Manufacturing standards may vary from service specifications. Always refer to the service procedures and

specifications in this manual when engine service is required.

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Before attempting a B&SD engine overhaul or a tune-up, it is necessary that your shop be equipped with proper tools,

equipment and mechanics who are thoroughly familiar with Briggs & Stratton engine design and construction. With

your shop thus equipped, this book will serve as a guide in performing the various steps necessary to do a complete

and satisfactory job. Use only genuine replacement parts. Always use recommended service tools.

This engine is designed and manufactured using metric dimensions. The English equivalents provided may have been

rounded up or down to the closest numerical interpretation of the metric dimension.

The terms Inspect, Check, Test and Replace are used as follows:

INSPECT Visual inspection look for signs of wear, scoring, cracks, stripped threads, etc.

CHECK Measure by means of plug gauges, micrometer, feeler gauges, scale, etc.

TEST Analyze with proper test equipment.

REPLACE This usually means to take off the old part and reassemble it or replace it with a new one.

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As engine is being disassembled, mark parts which are part of an assembly, to prevent interchanging. Arrange parts in

an orderly manner, keeping parts which are an assembly together.

Visually inspect each part as it is removed look for signs of wear, scoring, cracks, stripped threads, etc.

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Carefully check parts that can be reconditioned and/or reused.

Replace any parts that are not within specification.

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Clean or wash disassembled parts.

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Use a torque wrench to torque bolts and nuts to required specifications.

Replace all gaskets, cotter pins, oil seals and O-rings.

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Abbreviation

Meaning

Abbreviation

Meaning

ASSY

Assembly

Outside Diameter

BDC

Bottom Dead Center

OPT

Optional

Diesel Turbocharger

O/S

Oversize

Exhaust

Right Hand

Inside Diameter

SAE

Society of Automotive

Engineers

Intake

T/C

Turbocharger

Left Hand

TDC

Top Dead Center

Multi-purpose

U/S

Undersize

transmitted, in any form or by any means, electronic or mechanical,

including photocopying, recording or by any information storage

and retrieval system, without permission in writing from Briggs &

Stratton Corporation.

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SECTION CONTENTS

Section 1

Section 6

GENERAL INFORMATION

Engine Identification

In The Interest Of Safety

Engine Views

Engine Specifications And Data

Fastener Specifications

Briggs & Stratton Numerical Number System

Maintenance Schedule

CYLINDER BLOCK INSPECTION AND

REPAIR

Checking Cylinder Block

Replacing Camshaft Bearing

Replacing Camshaft Plug

Section 7

CRANKSHAFT, CAMSHAFT AND BEARINGS

Checking Crankshaft

Checking Main Bearing Clearances

Checking Connecting Rod Bearing Clearances

Checking Crankshaft End Play

Checking Camshaft

2 Section 2

CYLINDER HEAD AND VALVES

Remove Cylinder Head

Disassemble Cylinder Head

Inspect And Repair

Cylinder Head

Valve Guides

Valves

Disassemble Rocker Arm Shaft

Assemble Rocker Arm Shaft

Assemble Cylinder Head

Install Cylinder Head

Adjust Valves

Section 8

PISTON, RINGS AND CONNECTING ROD

INSPECTION AND ASSEMBLY

Disassemble Piston And Connecting Rod

Checking Piston And Rings

Checking Piston Pin And Connecting Rod

Assemble Piston And Connecting Rod

Assemble Piston Rings To Piston

Section 3

Section 9

TIMING GEARS AND GEAR CASE

Remove Timing Gear Cover And Gears

Checking Gears

Remove Gear Case

Replace Timing Gear Cover Oil Seal

Assemble Timing Gear Case And Gears

CYLINDER BLOCK ASSEMBLY

Install Crankshaft

Install Pistons And Connecting Rods

General Assembly

Oil Pickup Tube

Rear Seal Retainer And Starter Motor

Flywheel

Install Timing Gear Case, Camshaft And

Gears

Install Oil Pan

Install Alternator

Section 4

FLYWHEEL AND REAR SEAL RETAINER

Removing Flywheel And Rear Seal Retainer

Replacing Oil Seal

Installing Rear Seal Retainer And Flywheel

Install Oil Pan

10 Section 10

FUEL SYSTEM AND RELATED

COMPONENTS

General Information

Injector Pump Timing Specifications

Checking Injector Pump Timing

Section 5

CYLINDER BLOCK DISASSEMBLY

Engine Stand Fixture

Cylinder Block Disassembly

SECTION CONTENTS (contd)

Adjusting Injector Pump Timing

Injectors

Remove Injectors

Checking Injectors

Install Injectors

Fuel Filter General

Draining Water Collector

Change Fuel Filter

Fuel Shut-Off Solenoid

Checking Fuel Shut-Off Solenoid

Wiring

Injector Pump Identification

Engine Speed Identification Chart

Adjust Idle Speed

Adjust Top No Load Speed

Test Equipment

Testing Starter

Starter Current Draw Test No Load

Testing Starter (No Load)

Starter Solenoid

Equipment To Test Solenoid

Testing Solenoid

Remove Solenoid

Check Pinion And Clutch Assembly

Assemble Pinion And Clutch Assembly

Install Solenoid

Install Solenoid Contacts And Plunger

Disassemble Starter Motor

Inspect Armature Commutator

Inspect Brushes

Replace Brushes

Assemble Starter Motor

Wiring Diagrams

40 Amp Wiring Diagram

14 Amp Wiring Diagrams

Section 11

ELECTRICAL SYSTEMS

Electrical System Components

Glow Plug System

Glow Plug Specifications

Remove Glow Plugs

Test Equipment

Testing Glow Plug

Preheat Timer And Glow Relay

Testing Preheat Timer

Testing Glow Relay

Keyswitches

Charging Systems

14 Amp Charging System

Test Equipment

Testing Alternator AC Output

Testing Regulator-Rectifier DC

Output

Testing Charge Indicator Bulb And

Wiring

40 Amp Charging System

Test Equipment

Testing Alternator DC Output

Disassemble Alternator

Checking Bearings

Install Ball Bearing

Check Brushes

Check Regulator

Check Rectifier

Assemble Alternator

Starter System

Starter Current Draw Test Installed

Section 12

LUBRICATION SYSTEM

Description

Change Oil

Change Oil Filter

Check Oil Pressure

Disassemble Gear Case

Remove Oil Pump

Assemble Gear Case

Install Oil Pump

Section 13

COOLING SYSTEM

General Information

Checking Cooling System

Pressure Testing Cooling System

Testing Radiator Cap

Changing Coolant

Thermostat

Removing Thermostat

Checking Thermostat

Installing Thermostat

Water Pump

Inspecting Water Pump

Removing Water Pump

Installing Water Pump

III

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