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Royal Enfield 350 BULLET 1951 User Manual

Royal Enfield 350 BULLET 1951
102 pages
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ROYAL ENFIELD WORKSHOP MANUAL
WORKSHOP
MAINTENANCE MANUAL
FOR THE
Royal
Enfield
350 BULLET 194955
500 BULLET 195355
MAN 8
www.hitchcocksmotorcycles.com

Table of Contents

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Royal Enfield 350 BULLET 1951 Specifications

General IconGeneral
Displacement346 cc
Bore x Stroke70 mm x 90 mm
IgnitionMagneto
Front BrakeDrum
Rear BrakeDrum
Suspension FrontTelescopic Fork
Wheelbase1370 mm
Engine TypeSingle cylinder, 4-stroke
Transmission4-speed
Fuel SystemAmal Carburettor
BrakesDrum
Front SuspensionTelescopic
Rear SuspensionTwin shock absorbers
Suspension RearTwin shock absorbers
Brakes FrontDrum
Brakes RearDrum

Summary

Technical Data - 350 Bullet (1948-1955)

Technical Data - 500 Bullet Engine (1953-1955)

Engine Specification - 350 and 500 Bullet Models

Engine Overview

General description of the engine's configuration and type.

Cylinder Head Details

Description of the cylinder head construction and materials.

Cylinder Bore and Stroke

Specifies cylinder bore and stroke for 350 and 500cc models.

Piston Specifications

Details piston design, rings, and available compression ratios.

Connecting Rod Material

Describes the connecting rod material and construction.

Crankcase and Oil Tank

Details the crankcase and integral oil tank construction.

Crankshaft and Flywheel Assembly

Explains the construction of the crankshaft and flywheel.

Main Bearing Types

Describes the main bearings used on driving and timing sides.

Camshaft and Cam Pinions

Details the cam construction and material.

Valve Material

Specifies the materials used for inlet and exhaust valves.

Valve Gear Components

Describes the components of the valve gear system.

Timing Drive Mechanism

Explains the timing drive system and its components.

Ignition and Lighting System

Details the ignition and lighting supply via Magdyno.

Carburetter Types and Sections

Refers to specific sections for carburetter details.

Air Filter Type

Describes the air filter used for the carburettor.

Lubrication System Details

Explains the dry-sump lubrication system operation.

Engine Breather System

Details the breather system and its importance for engine performance.

Gearbox Speeds and Ratios

Describes the gearbox, its speeds, and gear ratios.

Clutch Design Differences

Compares clutch designs for 350 and 500 Bullet models.

Service Operations with Engine in Frame

Timing Cover Removal

Procedure for removing the timing cover and its associated parts.

Valve Timing Adjustment

Steps for setting the valve timing with tappet clearance.

Tappet Clearance Adjustment

How to adjust tappet clearances for correct engine operation.

Ignition Timing Setting

Procedure for setting the ignition timing using the magdyno.

Petrol Tank Removal

Steps for removing the petrol tank from the motorcycle.

Cylinder Head Removal

Detailed instructions for removing the cylinder head assembly.

Valve Removal Procedure

Steps for removing the valves from the cylinder head.

Rocker Removal

Instructions for removing the rockers from the cylinder head.

Valve Guide Replacement

How to remove and replace valve guides.

Cylinder Barrel Removal

Steps for removing the cylinder barrel.

Piston Removal from Barrel

Procedure for removing the piston from the cylinder.

Engine Decarbonising Procedure

How to remove carbon deposits from engine components.

Valve Grinding and Seating

Method for grinding valves and ensuring proper seating.

Engine Reassembly Steps

Guidance for reassembling the engine after decarbonising.

Oil Filter Cleaning and Replacement

How to clean and replace the oil filter element.

Oil Pump Overhaul

Steps for overhauling the oil pumps.

Pump Worm and Timing Pinion Removal

Procedure to remove pump worm and timing pinion.

Magdyno Pinion Removal

How to remove the magdyno pinion.

Primary Chain Tension Adjustment

How to adjust the primary chain tension.

Engine Sprocket Removal

Steps for removing the engine sprocket.

Tappet and Guide Removal

Instructions for removing tappets and guides if worn.

Breather Dismantling

How to dismantle the breather assembly.

Clutch Removal Procedure

Steps for removing the clutch assembly.

Final Drive Sprocket Removal

How to remove the final drive sprocket.

Pressure Relief Valve Details

Information on pressure relief valves in the oil system.

Magdyno Removal Steps

Procedure for removing the Magdyno unit.

Service Operations with Engine Removed

Engine Removal from Frame

Steps to remove the entire engine from the motorcycle frame.

Gearbox Removal Procedure

How to remove the gearbox from the engine.

Crankcase Dismantling

Procedure for separating the crankcase halves.

Main Bearing Replacement

Instructions for removing and replacing main bearings.

Cam and Idler Spindle Replacement

How to replace cam and idler spindles.

Flywheel Assembly and Crankshaft

Details on dismantling and reassembling the flywheel and crankshaft.

Crankcase Reassembly

Steps for reassembling the crankcase halves.

Gearbox and Clutch Overhaul

Gearbox Removal

Instructions for removing the gearbox unit.

Gearbox Dismantling Procedure

Steps for dismantling the gearbox.

Ball Race Removal from Gearbox

How to remove ball races from the gearbox.

Gear Change Mechanism Adjustment

How to adjust the gear change mechanism.

Gearbox Reassembly

Steps for reassembling the gearbox.

Clutch Dismantling and Reassembly

Procedure for dismantling and reassembling the clutch.

Clutch Control Adjustment

How to adjust the clutch control cable.

Neutral Finder Adjustment

How to adjust the neutral finder mechanism.

Gearbox Oil Level Check

How to check and maintain the gearbox oil level.

Amal Carburetter Specifications

Carburetter Design Variations

Describes two different designs of the Amal carburetter.

Amal Monobloc Carburetter Description

Monobloc Carburetter General Description

General overview of the Amal Monobloc Carburetter.

Carburetter Tuning Procedure

Instructions for tuning the Amal Monobloc carburetter.

Carburetter Dismantling

Steps for dismantling the carburetter.

High Petrol Consumption Causes

Discusses reasons for excessive petrol consumption.

Lucas Magdyno Maintenance

Magdyno Unit General Description

Overview of the Magdyno unit's construction.

Magdyno Routine Maintenance

Daily, weekly, and monthly maintenance tasks for the Magdyno.

Magdyno Lubrication Schedule

Lubrication intervals and procedure for the Magdyno.

Magdyno Adjustments

Instructions for adjusting contact breaker gap and timing control.

Magdyno Cleaning Procedure

How to clean the Magdyno unit.

High Tension Cable Replacement

Steps to replace the high tension cable.

Timing Control Cable Replacement

How to replace the timing control cable.

Contact Breaker Spring Tension

Details on the contact breaker spring pressure.

Magdyno Engine Position Testing

Procedures for testing Magdyno operation on the engine.

Lucas Dynamo Model E3LM Service

Dynamo Unit General Description

Overview of the Dynamo's function and specifications.

Dynamo Lubrication

Lubrication requirements for the dynamo unit.

Commutator and Brush Gear Inspection

How to inspect the commutator and brush gear.

Dynamo Test Data and Specifications

Provides test data including cutting-in speed and output.

Charging Circuit Fault Diagnosis

Procedure to diagnose faults in the charging circuit.

Dynamo Dismantling Procedure

Steps for dismantling the dynamo unit.

Commutator Examination and Cleaning

How to examine and clean the commutator.

Field Coil Testing

Procedure for testing the field coil for resistance and earth.

Armature Testing and Replacement

How to test and handle the armature.

Dynamo Bearing Replacement

Instructions for replacing dynamo bearings.

Dynamo Reassembly Steps

General steps for reassembling the dynamo unit.

Control Box Service (Model RB107)

Control Box General Description

Overview of the control box's internal layout.

Control Box Setting Data

Specifications for cut-out and regulator settings.

Control Box Servicing Procedures

Steps for servicing the control box.

Battery and Regulator Wiring Check

How to check wiring between battery and regulator.

Regulator Electrical Setting Check

Procedure to check the regulator's electrical settings.

Cut-out Electrical Setting Check

How to check the cut-out's electrical settings.

Cut-out Electrical Setting Adjustment

Procedure to adjust the cut-out's electrical settings.

Battery Model PUZ7E Service

Battery General Description

Description of the PUZ7E battery and its dry-charged state.

Battery Preparation for Service

Steps for filling and preparing the battery.

Battery Routine Maintenance

Routine checks for electrolyte level and terminals.

Battery Servicing and Charging

Servicing the battery and methods for recharging.

Head and Tail Lamp Service

Headlamp Unit Description

Description of the headlamp assembly and Lucas Light Unit.

Lucas Light Unit Details

Specifics of the Lucas Light Unit construction and bulb fitting.

Light Unit and Bulb Replacement

Procedure for replacing the headlamp unit and bulb.

Parking Light Service

Instructions for servicing parking lights.

Tail Light Service and Bulb Types

Details on tail light service and bulb specifications.

Frame Construction and Servicing

Frame Construction Details

Description of the frame's basic construction and materials.

Steering Head Race Adjustment

How to adjust the steering head races.

Rear Suspension Unit Removal

Procedure for removing the rear suspension units.

Rear Suspension Unit Servicing

How to service proprietary and Royal Enfield rear suspension units.

Swinging Arm Chain Stays Removal

How to remove swinging arm chain stays.

Centre Stand Removal and Adjustment

Procedure for removing and adjusting the centre stand.

Wheel Alignment Check

How to check and ensure correct wheel alignment.

Frame Component Lubrication

Lubrication points for frame components like steering head races.

Front Fork with Casquette and Alloy Bottom Tubes

Front Fork Description

Description of the telescopic fork with casquette.

Front Fork Operation

How the front fork's movement and damping system works.

Fork Dismantling for Parts Replacement

Steps to dismantle the fork for replacing parts.

Front Fork Spring Details

Information on front fork springs.

Fork Parts Reassembly

Guidance for reassembling fork components.

Steering Head Race Adjustment

How to adjust the steering head races.

Complete Fork Removal

Procedure for removing the entire front fork assembly.

Front Fork Lubrication

How to maintain oil level in the front fork.

Front Fork Air Vent Details

Information regarding air vents in the front fork.

Front Fork with Facia Panel and Alloy Bottom Tubes

Front Fork Description (Facia Panel)

Description of the front fork with facia panel.

Front Fork Operation (Facia Panel)

How the front fork operates with facia panel.

Fork Dismantling for Parts Replacement

Steps to dismantle the fork for part replacement.

Steering Head Race Adjustment

How to adjust steering head races.

Facia Panel Fork Head Removal

Procedure for removing the facia panel fork head.

Main Tube Removal from Fork

Steps to remove the main tubes from the fork assembly.

Fork Parts Reassembly

Guidance for reassembling fork components.

Front Fork Lubrication Details

Information on lubricating the front fork.

Front Fork with Facia Panel and Steel Bottom Tubes

Front Fork Description (Steel Bottom Tubes)

Description of the front fork with steel bottom tubes.

Fork Dismantling for Parts Replacement

Steps to dismantle fork for part replacement.

Front Fork Spring Details

Information on front fork springs.

Steering Head Race Adjustment

How to adjust steering head races.

Facia Panel Fork Head Removal

Procedure for removing the facia panel fork head.

Main Tube Removal from Fork

Steps to remove the main tubes from the fork assembly.

Fork Parts Reassembly

Guidance for reassembling fork components.

Front Fork Lubrication Details

Information on lubricating the front fork.

Front Wheel with Dual 6-inch Brake

Front Wheel Removal from Fork

Steps for removing the front wheel from the fork.

Brake Cover Plate Assembly Removal

Procedure for removing brake cover plate assemblies.

Brake Shoes and Springs Removal

How to remove brake shoes and springs.

Brake Lining Replacement

Instructions for replacing brake linings.

Hub Spindle and Bearing Removal

Steps for removing the hub spindle and bearings.

Hub Bearing Specifications

Details on hub bearing types and part numbers.

Bearing Fitting Tolerances for Hub

Specifies tolerances for fitting bearings into the hub.

Ball Bearing Refitting Procedure

How to refit ball bearings into the hub.

Brake Shoe Reassembly to Cover Plates

Steps for reassembling brake shoes to cover plates.

Floating Cam Housing Operation

Explanation of the floating cam housing's function.

Brake Cover Plate Reassembly

Procedure for refitting brake cover plates.

Wheel Rim Specifications

Details on wheel rim types and specifications.

Spoke Specifications

Details on spoke types, lengths, and threads.

Wheel Building and Truing

Procedure for building and truing wheels.

Tyre Fitting and Removal

Instructions for fitting and removing tyres.

Tyre Pressure Recommendations

Recommended tyre pressures for different loads.

Hub Barrel Lubrication

Lubrication of the hub barrel.

Rear Wheel (Detachable Type) Service

Detachable Rear Wheel Description

Description of the detachable rear wheel type.

Main Wheel Portion Removal for Tyre Repairs

How to remove the main wheel portion for tyre work.

Complete Rear Wheel Removal for Brake Access

Procedure to remove the complete rear wheel for brake access.

Brake Shoe and Lining Replacement

Steps for removing brake shoes and fitting new linings.

Brake Lining Replacement Procedure

Instructions for replacing brake linings.

Brake Cam and Pivot Pin Removal

How to remove the brake operating cam and pivot pin.

Cush Drive Mechanism

Description of the cush drive mechanism and its rubbers.

Rear Wheel Ball Bearing Removal

Steps for removing ball bearings from the rear wheel hub.

Rear Wheel Hub Bearing Specifications

Details on rear wheel hub bearing types.

Bearing Fitting Tolerances for Hub

Specifies tolerances for fitting bearings into the hub.

Ball Bearing Refitting Procedure

How to refit ball bearings into the rear wheel hub.

Brake Assembly Reassembly into Cover Plate

Steps for reassembling brake parts into the cover plate.

Centering Cam Housing Adjustment

How to center the cam housing for brake adjustment.

Final Hub Reassembly Before Wheel Fitting

Steps for final hub reassembly before fitting the wheel.

Wheel Rim Specifications

Details on wheel rim types and specifications.

Spoke Specifications

Details on spoke types and lengths.

Wheel Building and Truing Procedure

Procedure for building and truing wheels.

Tyre Fitting and Removal

Instructions for fitting and removing tyres.

Tyre Pressure Recommendations

Recommended tyre pressures.

Hub Barrel Lubrication

Lubrication of the hub barrel.

Rear Wheel (Non-Detachable Type) Service

Non-Detachable Rear Wheel Description

Description of the non-detachable rear wheel.

Rear Wheel Removal and Replacement

Steps for removing and replacing the rear wheel.

Brake Shoe and Lining Replacement

Steps for replacing brake shoes and linings.

Brake Lining Replacement Procedure

Instructions for replacing brake linings.

Hub Spindle and Bearing Removal

Steps for removing the hub spindle and bearings.

Hub Bearing Specifications

Details on hub bearing types and part numbers.

Bearing Fitting Tolerances for Hub

Specifies tolerances for fitting bearings into the hub.

Ball Bearing Refitting Procedure

How to refit ball bearings into the hub.

Brake Cam and Pivot Pin Removal

How to remove the brake operating cam and pivot pin.

Cush Drive Mechanism

Description of the cush drive mechanism.

Brake Assembly Reassembly into Cover Plate

Steps for reassembling brake parts into the cover plate.

Centering Cam Housing Adjustment

How to center the cam housing for brake adjustment.

Final Hub Reassembly Before Wheel Fitting

Steps for final hub reassembly before fitting the wheel.

Wheel Rim Specifications

Details on wheel rim types and specifications.

Spoke Specifications

Details on spoke types and lengths.

Wheel Building and Truing Procedure

Procedure for building and truing wheels.

Tyre Fitting and Removal

Instructions for fitting and removing tyres.

Tyre Pressure Recommendations

Recommended tyre pressures.

Hub Barrel Lubrication

Lubrication of the hub barrel.

Special Tools for Bullet Models

Special Tools for Section C2

List of special tools for Section C2 procedures.

Special Tools for Section D2

List of special tools for Section D2 procedures.

Special Tools for Section H1

List of special tools for Section H1 procedures.

Special Tools for Section I

List of special tools for Section I procedures.

Special Tools for Section J3

List of special tools for Section J3 procedures.

Special Tools for Section J4

List of special tools for Section J4 procedures.

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