BL Technical Service Bulletins 1970s Section A

Technical Service Bulletins

Index 1970s

Section A Engine

Bulletin Number Date Model Range Subject
3_A_1 2nd issue 1 February 1970 Austin America Crankshaft Connecting Rod Journal Diameters
3_A_2 1 February 1970 All “A” Series Engines Equipped with Manual Transmission Crankshaft Primary Gear Oil Leakage
3_A_3 1 March 1970 All 1275cc Engines Valve Stem Seals
3_A_4 1 March 1970 Austin America Radiator Shroud Rubber
3_A_5 1 March 1970 Sprite and Midget Accelerator Sticking
3_A_6 May, 1970 Series A Engines Loose Manifolds
3_A_7 May, 1970 Austin America Cooling System Expansion
3_A_8 July, 1970 Austin America Automatics Equipped with Air Conditioning Oil Filter Replacement
3_A_9 24 October 1970 MG and Austin America Gulp Valves
71-A-10 May, 1971 Austin America Choke Setting
71-A-11 July, 1971 Austin America Choke Cable Failure
71-A-12 July, 1971 All Models Gulp Valves
71-A-13 July, 1971 All Austin Americas Correct Operation of Choke Control
71-A-14 August, 1971 MGB Valve Rocker Gear Lubrication
71-A-15 August, 1971 Austin America, Automatic Oil Pump Driveshafts and Couplings
71-A-16   MGB Connection Rod Nuts
72-A-1 March, 1972 MGB and MGB/GT 18 V Engines Tappets & Push Rods
72-A-2 April, 1972 MGB H.I.F. Carburetor
72-A-3 April, 1972 1972 MGB and MGB/GT Choke ‘O’ Ring H.I.F. Carburetor
72-A-4   All Oil Consumption
72-A-5     Anti Run-On Valve
72-A-6 January, 1973 MGB Engine Oil Capacity
72-A-7      
72-A-8      
72-A-9   All 1973 Models Anti Run-On Valve
73-A-1 January, 1973 MGB & GT Steel Engine Fan Replaced by Plastic Fan
73-A-1A August, 1973 MGB & GT Steel Engine Fan Replaced by Plastic Fan
73-A-2     Gulp Valves
73-A-2A January, 1973 All Models Amendment to 73-A-2 – Gulp Valves
73-A-3 March, 1973 All Models Carburetors
73-A-4     Connecting Rods
73-A-5 March, 1973 MGB & MGB/GT Throttle Cable
73-A-6 May, 1973 Marina Starter Ring Gear
73-A-7 May, 1973 MGB & MGB/GT Spin-on Engine Oil Filter Deluxe Oil Filter
73-A-8 June, 1973 Marina Fuel Tank Slow Filling
73-A-9 June, 1973 Marina Fuel Pump Heat Shield Oil Seepage
73-A-10 July, 1973 Marina (air conditioned only) Engine Restraint Cable
73-A-11 November, 1973 All 1974 Models Seat Belt / Starter Interlock System
73-A-12 November, 1973 All Models Lubrication Specifications
73-A-13   All Oil Filters
75-A-1      
75-A-2      
75-A-3      
75-A-4      
75-A-5      
75-A-6 August, 1975 Midget 1500 CC Midget 1500 CC Overheating
       
76-A-1      
76-A-2      
76-A-3      
76-A-4 June, 1976 All Cross Reference European to U.S. Wire Sizes
76-A-5      
76-A-6 October, 1976 Marina and MGB Engine Oil Starvation
76-A-7 October, 1976 MGB Automatic Choke Assembly