ELECTRICAL ....................................................................... Polarity. Batteries: Access, Checking, topping-up, Gen- eral, Precautions Type CA. Fuses: Diagram of connec- tions, Line fuses, Blown fuses, Accessories. Headlamps: Light unit, Beam setting. Lamps: Parking and direction indicator, Stop, tail and direction indicator, Number- plate, Side marker, Reverse, Courtesy, Luggage compart- ment (Tourer), Trunk lid or interior (GT), Warning, panel and illumination, Replacement bulbs. Alternator. Wind- screen (Windshield) wiper: Arms, Blades, Washer IGNITION .............................................................................. Ignition timing, Distributor, Sparking plugs ENGINE ................................................................................. Lubrication: Checking, Draining, Filling, Oil filter chang- ing. Drive Belt: Alternator, Oil filter. Valve rocker clear- ance: Checking, Adjusting EMISSION CONTROL SYSTEMS ...................................... General Description, Crankcase emission control, Ex- haust emission control, Fuel evaporative loss control. Malfunction identification: Visual checks, Driving symp- toms. Maintenance Operations: Adsorption canister, Gulp valve, Fuel line filter, Purge line restrictor. Air pump: Drive belt, Air cleaner, Filler caps FUEL SYSTEM ..................................................................... Air cleaners. Carburetors: Air pollution control, Lubri- cation, Tuning GENERAL DATA ................................................................. Complete technical specifications for: Engine, Fuel sys- tem, Cooling system, Ignition system, Clutch, Gearbox and overdrive, Propeller shaft, Rear axle, Steering, Front suspension, Rear suspension, Electrical equipment, Brakes, Wheels, Tires, Fluid capacities, Vehicle dimen- sions, Weights, Torque wrench settings A. THE ENGINE ........................................................................ General description, Lubrication (Oil pressure, oil pump, sump and strainer), Water pump, Manifolds, Rocker as- sembly, Cylinder head assembly, Diagram and key (cyl- inder head components), Valve gear and valves, Diagram and key (cylinder block components), Tappets, Decar- bonizing, Timing gear and chain tensioner, Main and big-end bearings, Pistons and connecting rods (18G/18GA, 18GB), Diagram and key (engine internal components), Piston sizes and cylinder bores, Camshaft, Camshaft bearing renewal, Crankshaft 7 removing and replacing, Flywheel 7 removing and replacing, Flywheel 7 refitting starter rings, Engine and power unit 7 removing and re- fitting, Diagram and key (engine mountings), Controls, Exhaust system, Closed-circuit breathing system, Dis- tributor driving spindle (18G/18_GA, 18GB), Oil cooler, Press fit gudgeon pin, Valve seat inserts B. THE IGNITION SYSTEM .................................................... Lubrication, Ignition coil, Distributor (servicing, remov- ing and replacing, dismantling, examining, assembling), Static ignition timing, High-tension cables, Sparking plugs, Locating the cause of uneven firing, Lowtension circuit (testing, locating a fault) C. THE COOLING SYSTEM .................................................... D. Diagram and key (radiator, grille, and diaphragm com- ponents), General description, Lubrication, Thermostat, Temperature gauge, Draining, ushing, and refilling the cooling system, Diagram and key (fan and water pump components), Fan belt, Radiator and diaphragm, Water pump, Cold weather precautions THE FUEL SYSTEM ............................................................ Lubrication, Fuel tank, Fuel pump, Diagram and key (AUF 300 and HP fuel pump components), Carburetors, Diagram and key (carburetor components), AIr cleaners Da. THE FUEL SYSTEM (EVAPORATIVE LOSS) .................. Fuel tank (12 US. gallons, 45.4 litres), Expansion tank, Leak testing E. THE CLUTCH ....................................................................... Diagram and key (clutch components), General descrip- tion, Clutch assembly, Servicing the clutch, Master cyl- inder, Slave cylinder, Diagram and key (clutch control components), Bleeding the system F. THE GEARBOX .................................................................... Diagram and key (gearbox components), General descrip- tion, Lubrication, Gearbox 7 removing and dismantling, Control tower 7 dismantling and assembling, Rear exten- sion 7 dismantling and assembling, First motion shaft dismantling and assembling, Laygear 7 dismantling and assembling, Third motion shaft (dismantling, examining the components, assembling), Assembling the gearbox, Fitting replacement bushes, Fitting the gearbox front cover 33 35 35 36 38 3 OFFICIAL MGB WORKSHOP MANUAL 47 73 105 113 123 137 139 147 Fa. Fb. Fc. Ha. Ja. TRANSMISSION .................................................................. 39 Checking the gearbox. Overdrive: Draining, Sump filter, Relief valve filter, Filling. Checking the rear axle, Lubri- cating the propeller shaft STEERING/SUSPENSION .................................................. 39 Wheel alignment, Lubrication GENERAL DATA .......................... 39 Engine, Ignition, Fuel system, Gearbox and overdrive, Fluid capacities, Vehicle dimensions, Wheel types, Tire pressures, Weights MAINTENANCE SUMMARY ............................................. 40 Weekly, 3 months service, 6 months service, 12 months service, 24 months service SERVICE ............................................................................... 41 Service parts and accessories, Identification, Supple- mentary tool kit TUNING MODIFICATIONS ................................................ 41 Engine, Carburetor, Ignition, Transmission, Suspen- sion, Wheels and brakes, Miscellaneous, Address of British-Leyland Special Tuning Department LUBRICATION ............... 1 ..................................................... 42 Lubrication chart, Lubrication schedule: Weekly, 3 months, 6 months, 24 months THE OVERDRIVE (TYPE D) ............................................ 157 Diagram and key (overdrive components), Lubrication, De- scription, Construction, Guide to service diagnosis, Pump non-return valve, Relief valve, Hydraulic lever setting, Op- crating valve, Removing and replacing the unit, Dismantling and reassembling the unit, Drive shaft bearings and seal, Overdrive relay system THE GEARBOX (ALL SYNCHROMESH) ......................... I69 Gearbox assembly, Rear extension, Front cover, Selector rods and forks, Reverse idler gear, First motion shaft, Third motion shaft 7 non-overdrive, Third motion shaft 7 with overdrive, Laygear THE OVERDRIVE (TYPE L.H.) .......................................... 177 Diagram and key (type L.H. overdrive components), Gen- eral description, Fault diagnosis, Hydraulic, pressure test, Lubrication, Filters, Relief and low pressure valve, Solenoid valve, Pump and non-return valve, Overdrive assembly THE PROPELLER SHAFT .................................................. 191 Diagram and key (propeller shaft components), General description, Propeller shaft (lubrication, removal and re- placing, dismantling, examining, assembling, sealed type) . THE REAR AXLE AND SUSPENSION (THREE-QUARTER FLOATING) ............................... I97 Diagram and key (rear axle components), General de- scription, Lubrication, Brake-drum and axle shaft 7 removing and replacing, Hub 7 removing and replacing, Pinion oil seal 7 renewing, Differential pinions remov- ing and replacing, Crown wheel and pinion (dismantling, assembling and setting), Axle removing and refitting, Rear road springs 7 dismantling and assembling, Dia gram and key (rear suspension components) THE REAR AXLE AND REAR SUSPENSION (SEMI-FLOATING TYPE) ........................................... 211 Diagram and key (rear axle components), General de- scription, Lubrication, Axle unit, Hubs and axle shafts, Pinion oil seal renewing, Differential and pinion, Springs THE STEERING GEAR ....................................................... 219 Diagram and key (steering gear components), General description, Lubrication, Front wheel alignment, Steer- ing wheel, Steering column (early cars, later cars, uni- versal joint), Steering gearbox, Rack and pinion, Steer- ing column alignment, Ball joints, Steering lock ignition switch (early cars, later cars) THE STEERING GEAR (ENERGY ABSORBING COLUMN) ............................................. 227 Steering column, Rack assembly, Alignment THE FRONT SUSPENSION ................................................ 231 General description, Lubrication, Front hubs, C011 sprmgs Swivel axles, Diagram and key (front suspension com- ponents), Bushes removing and refitting, Front sus- pension unit, Swivel pins (additional grease nipple), Anti-roll bar THE HYDRAULIC DAMPERS ....................................... 241 Diagram and key (rear hydraulic damper), General description, Maintenance, Removing and replacing the dampers, Testing the dampers