Make AJS
Model TWINS
Year 1949-1955
Pages 150
Item MAINTENANCE MANUAL

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CONTENTS
Chapter I. T H E ENGINE · · · · · · · Page 9
Lubrication System—Cleaning Crankshaft Sludge Traps—O.H.V. Rocker Adjustment—IgnitionTiming—Removing and Replacing Timing Gear—Decarbonising—Engine Noises—Engine Overhaul —Removing Engine from Frame—Dismantling Engine—Centre Web—Crankshaft Assembly— Main Bearings—Inspection—Reassembly—Crank-case and Crankshaft—Connecting-rods—CentreWeb—Installing Engine in Frame—Crankshaft Balance—Crankshaft Modification.
II. CARBURATION · · · · · · · 58
Carburetter Function—1950-54 Types—Faults—Pilot-jet Modification—Excessive Petrol Consump-tion—Mixture Bias—Monobloc Carburetter— Faults—Engine Fails to Idle—Heavy Fuel Con-sumption—Carburetter Flooding.
III. TRANSMISSION · · · · · · · 66
Chain Adjustment—Rivet Extractor—Chain Lubri-cation—Gearboxes—C.P. Gearbox Faults—B.52 Gearbox Faults—Dismantling and Reassembling C.P. Gearbox in the Frame—Dismantling and Reassembling B.52 Gearbox in the Frame— Clutches—Operation—Adjustment—Clutch Slip— Removing the Clutch.
IV. FRAME AND FORKS · · · · · · 89
Steering-head Adjustment—Steering Troubles— Wheel Alignment—Teledraulic Suspension—Faults in the Front Forks—Dismantling the Forks —Changing the Fork Springs—Replacing the Oil Seal—Checking the Oil Content—Removing the Front-fork Assembly—Removing a Fork Inner Tube—Rear-suspension Service—Checking Oil Content—Complete Dismantling—Removing the Oil Tank and Battery Carrier.
V. WHEELS AND BRAKES · · · · · · 109
Adjusting Front-wheel Bearings—Dismantling Wheel Bearings—Removing and Refitting Rear Wheel—Dismantling Rear Brake Drum—Backlash in the Driving Studs—Adjusting Rear Wheel

CONTENTS vii
Chapter Bearings—Brakes—Removing and Replacing BrakeLiners—Fitting New Liners—Brake-shoe Adjust-ment—Ineffective Brakes—Brake Squeal. Page
VI. ELECTRICAL AND IGNITION EQUIPMENT Magneto — Lubrication — Adjustment — Cleaning — Removal — Dynamo — Testing — Removal — Regulator — Testing — Cleaning — Cut-out Testing and Adjustment — Burnt Contacts — Sparking-plugs — Ammeter Testing — Battery— Lamp Bulbs Blowing—Removing the Headlamp— Focusing the Main Driving Beam—Wiring Diagrams. · · 119
VII. TUNING FOR SPEED Valve Timing—Valve Springs—Rocker Clearances—Carburation—Exhaust System—Dismantling theEngine—Frame Adjustments—Wheels and Tyres —Chains. · · · · · · 135
APPENDIX I · · · · · · · 140
Periodic Maintenance—Recommended Lubricants.
APPENDIX 2 Technical Data—Spring Data—Gearbox and ChainData. · · · · · · · 142
INDEX · · · · · · · 148·



As motor bikes and or vehicles are made in generations, these manuals are suitable for other years of manufacture

YOUR LOCAL DEALERSHIP TECHNICIANS ARE USING THE SAME TYPE OF MANUAL TO SERVICE, MAINTAIN, DIAGNOSE AND REPAIR YOUR BIKE.

System requirements for installation

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