Below are the titles and TSB numbers for all the 1973 Technical Service Bulletins for MG and Austin vehicles published by British Leyland.
Category A – Engine #
All 1973 category A, Engine TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-A-1 | Steel Engine Fan Replaced by Plastic Fan | January 1973 | 73-A-1 | MGB & MGB GT |
| 73-A-2 | Gulp Valves | 1973 | 73-A-2 | All |
| 73-A-2A | Amendment to TSB Bulletin 73-B-1 (Gulp Valves) | January 1973 | 73-A-2A | All Models |
| 73-A-3 | Carburetors | March 1973 | 73-A-3 | All Models |
| 73-A-4 | Connecting Rods | March 1973 | 73-A-4 | 1275 cc A Series Engine 1800 cc B Series Engine |
| 73-A-5 | Throttle Cable | March 1973 | 73-A-5 | MGB & MGB GT |
| 73-A-6 | Starter Ring Gear | May 1973 | 73-A-6 | Marina |
| 73-A-7 | Deluxe Oil Filter WDX-177 | May 1973 | 73-A-7 | MGB & MGB GT Spin-on Engine Oil Filter |
| 73-A-8 | Fuel Tank Slow Filling | June 1973 | 73-A-8 | Marina |
| 73-A-9 | Fuel Pump Heat Shield Oil Seepage | June 1973 | 73-A-9 | Marina |
| 73-A-10 | Engine Restraint Cable Kit | July 1973 | 73-A-10 | Marina (Air Conditioned Only) |
| 73-A-11 | Seat Belt/Starter Interlock System | November 1973 | 73-A-11 | All 1974 Models |
| 73-A-12 | Lubrication Specifications | November 1973 | 73-A-12 | All Models |
| 73-A-13 | Oil Filters | 1973 | 73-A-13 | All |
Category B – Electrical Systems/Parts #
All 1973 category B, Electrical systems/parts TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-B-1 | Alternators | July 1973 | 73-B-1 | All |
Category C – Car Body #
All 1973 category C, car body TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-C-1 | Vyback Rear Windows | May 1973 | 73-C-1 | All Convertibles |
| 73-C-2 | Marina Water Leaks | May 1973 | 73-C-2 | Austin Marina |
| 73-C-3 | Preliminary Information 1974 Vehicle Seat Belt Interlock System | 1973 | 73-C-3 | MGB, MGB GT, MG Midget Austin Marina |
Category D – Gearbox (Transmission) #
All 1973 category D, Gearbox (Transmission) TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-D-1 | Inhibitor Switch (Borg-Warner Transmission) | March 1973 | 73-D-1 | Marina |
| 73-D-2 | Rear Band Adjustment – Automatic Transmission | March 1973 | 73-D-2 | Austin Marina |
| 73-D-3 | Borg-Warner Automatic Transmission Fluid Level Check | March 1973 | 73-D-3 | Marina |
| 73-D-4 | Marina Gearbox (Manual) | April 1973 | 73-D-4 | Marina |
| 73-D-4A | Gearbox (Manual) Drain Plug | 1973 | 73-D-4A | Austin Marina |
| 73-D-5 | Automatic Transmission | July 1973 | 73-D-5 | Marina |
| 73-D-6 | Difficult Selection & Disengagement of Reverse Gear | October 1973 | 73-D-6 | Austin Marina |
Category E – Paint/Paintwork #
All 1973 category E, paint/paintwork TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-E-1 | Paint Spotting | November 1973 | 73-E-1 | All Models |
| 73-E-2 | 1974 Paint Codes | December 1973 | 73-E-2 | All 1974 Models |
Category F – Chassis #
All 1973 category F, chassis TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-F-1 | Front End Geometry | July 1973 | 73-F-1 | Marina |
| 73-F-2 | Front Suspension | August 1973 | 73-F-2 | Marina |
Category G – Miscellaneous #
All 1973 category G, miscellaneous TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-G-1 | Dealer Service Equipment Air Pollution Control | February 1973 | 73-G-1 | All Models |
| 73-G-2 | Special Tools Required for Austin Marina | February 1973 | 73-G-2 | Austin Marina |
| 73-G-3 | Marina Quality | February 1973 | 73-G-3 | Marina |
| 73-G-4 | Pre-delivery Inspection All Dealers | March 1973 | 73-G-4 | All 1973 Models |
| 73-G-6 | 1973 Maintenance Schedules – 1,000 Miles (Ref: Passport to Service) | March 1973 | 73-G-5 | All Models |
| 73-G-7 | MG Midget Clutches – Warranty Claims | March 1973 | 73-G-7 | MG Midget |
| 73-G-9A | Repair Operation Time Schedules | April 1973 | 73-G-9A | Midget, MGB, MGB/GT |
| 73-G-10 | Ara Air Conditioning Warranty | April 1973 | 73-G-10 | Austin Marina |
| 73-G-10A | A.R.A Air Conditioning Warranty | June 1973 | 73-G-10A | Austin Marina |
| 73-G-11 | Repair Operation Time Schedule | May 1973 | 73-G-11 | MGB, MGB/GT, Midget |
| 73-G-12 | Bishman Wheel Service Equipment Program | May 1973 | 73-G-12 | All |
| 73-G-13 | Service Schools | May 1973 | 73-G-13 | All Models |
| 73-G-14 | Additional Tools Available Austin Marina | June 1973 | 73-G-14 | Marina |
| 73-G-15 | Environmental protection Agency Interim Policy on Emissions Control System Repairs | August 1973 | 73-G-15 | All |
| 73-G-16 | Time Schedule Amendment | October 1973 | 73-G-16 | MGB and MGB /GT |
| 73-G-17 | Cancelling 100% Return of Marina Warranty Parts | October 1973 | 73-G-17 | Marina |
| 73-G-18 | Exhaust Emission Gas Analyzing Equipment, Infra-red Non Dispersive Type | November 1973 | 73-G-18 | All |
| 73-G-19 | Smith Universal Electrical Test Instrument – BLT.5001 | November 1973 | 73-G-19 | All |
| 73-G-20 | Amendments, Warranty Policy and Procedures Part No. HAC 32 (Section 1-15) | November 1973 | 73-G-20 | All |
| 73-G-21 | Passport to Service / 1974 | December 1973 | 73-G-21 | All |
Category H – Air Conditioning #
All 1973 category H, air conditioning TSBs for Austin & MG.
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-H-1 | Operating Instructions – Marina Air Conditioning | August 1973 | 73-H-1 | Austin Marina |
| 73-H-2 | Marina Air Conditioning Compressor Pulleys | October 1973 | 73-H-2 | Austin Marina |
Category Z – Recall Campaigns #
| TSB Number | Subject | Date | View/Download | Applies To |
|---|---|---|---|---|
| 73-Z-5 | Recall Campaign Closing | 1973 | 73-Z-5 | MGB, Midget, America, Sprite |
| 73-Z-6 | Recall Campaign Closing | October 1973 | 73-Z-6 | MGB/MGB-GT/Midget |
Other Materials #
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