Technical Articles
our members help you with various tasks.

This section contains technical articles specific to the Austin Seven, extracted from our monthly 'Seven Focus' magazine, which are based on the experiences of our members who found the 'problem' before you!  Unfortunately photos in the earliest articles are b/w, but the information is still there!

Some of the articles may be enhanced by using the cross-reference(s) to more general articles in Technical Advice found in the motoring magazines of the pre- and post-war years.

 

Copyright
The author and Cornwall Austin Seven Club have the right to be identified as the author and publisher within the meaning of the Copyright, Designs and Patents Act 1988

Reproduction of Articles.
Anyone wishing to reproduce an article in an Austin Seven Club magazine may do so provided that the usual acknowledgement of the source of the article, being Cornwall Austin Seven Club website, and the named author are cited.  If you do so please let us know so that we know who has shown interest.  Reproduction for commercial purposes, digital storage, publication in any other format or website is strictly forbidden.Product endorsement.
The mention of a product, or service, in any article published on this website is for the benefit of factual correctness; and does not imply any endorsement nor indicate that that product is the only one available, or that the company that supplied it is the only one able to do so.  It should be accepted that it was the choice made by the author of the article at the time the work was undertaken.

 

Your Technical Questions. 
We are happy to receive questions from Austin Seven enthusiasts anywhere in the world so that you can repair, or restore, your 'Seven' and continue to enjoy owning, and driving, it.  Should you require additional guidance, or further detailed information, arising from one of our technical articles please send your question(s), to the webmaster who will pass them onto the Club member best able to help you.   With respect we are only able to answer questions relating to the Austin Seven (1922-1939).  Also many topics have been discussed on the forum Austin Seven Friends

If you are invited to telephone our member that is because he feels that it would be better to discuss your problem, and perhaps refer to other issues which you have possibly overlooked, rather than answer by e-mail.  It is your responsibility to make the call as our members do not wish to spend time 'chasing' you and leaving messages on answerphones only for there to be no reply.  They do not wish to call mobile phone numbers due to the higher cost of calls. 

Whilst every effort is made to ensure the accuracy of the technical advice and information the Club, its officers and the author(s) accept no liability for loss, damage or injury from persons acting upon the advice given in this publication and from any subsequent answers to questions asked of our members.  Anyone following the advice given by this publication, or answers subsequently provided, shall be deemed to have accepted this statement.

Please note:  Whilst we are pleased to give our time to answer questions, it sometimes involves a lot of effort to prepare the information specific to your request.  The person responding to your question would be pleased to receive your acknowledgment for the reply and feedback as to whether the advice offered to you did meet your needs, or any further questions that might subsequently arise.  Whatever - a 'thank you' would be very appreciated.

 

Articles specific to the Austin Seven are in Austin Seven Handbooks; also sections of The Austin Service Journal  produced by The Austin Motor Company Ltd. and issued to their Agents & Service Depots.  A number of general articles, most of which are not specifically 'Austin Seven', which apply to many pre-war, and early post-war, cars where the advice offered is as relevant now to owners of Austin Sevens as it was when the article was first published, are in Technical Advice.  

You may wish to refer to The Austin Seven Manual.
Fully recommended for the d-i-y enthusiast.  This is an all embracing workshop manual covering 'Seven' models from 1925 to 1939, but does not adequately cover the 'Big Seven'.  The sections deal with the Engine; Fuel System; Gearbox; Prop Shaft; Rear Axle; Front Suspension; Steering; Hubs & Brakes; Road Springs; Chassis; Electrical, and Accessories.  Each section is divided into periods ie 1923-28, 1928-1932, 1932-35, although not always these years.  Within each section are subsections on Dismantling and Assembly.  Diagrams support the step by step easy to follow text, but the only problem is that the text does not cite the letter identifying the part in the diagram, so there is a need to have a reasonable technical knowledge in order to use it,  by the late Doug Woodrow, published by, and available from, Mercury Vintage Services, Rosedale, Station Road, Emneth, Norfolk PE14 8DL.

. . . and The Austin Seven Companion
Another highly recommended book.  This is considered to be the book for technical information on the restoration and maintenance of the Austin Seven comprising articles based on many peoples experiences; covering all models to the Ruby.  Like all books it has a few faults but it is a very useful source of information for the d-i-y enthusiast, published by The 750 Motor Club.

 

Most Austin Seven Clubs include Technical Articles on their website, so if you are unable to find what you are looking for in this section have a look at other Club's websites.

There are some useful 'Quick Tips' that may help.

Appearance:    Brakes;    Breakdown Assistance;      Chassis and Bodywork;    Cooling System;   
 Clutch;    Dashboard Instruments;    Electrical and Ignition:    Engine;    Fuel System;
Gearbox and Transmission;    Indicators;    Lighting;    Miscellaneous;   
Roadworthiness;   Steering and Suspension;  Upholstery;   Wheels and Tyres

Austin Seven Technical Data
Specifications, Lubrication Chart and Wiring Diagrams
for the following models are available:
The AC TourerRP Saloon;  ARR Ruby & Variants;
CRV & CRW Big Seven.

See also:  Austin Seven Handbooks
NB: Handbooks are listed at www.a7ca.org  select Historic Information,
then see Documentation > Handbooks; some can be downloaded.


Workshop & Garage safety tips & advice
For some common sense suggestions on garage safety
when working on your car go to:
www.oldclassiccar.co.uk/classic_car_article6.htm


Appearance

        Ruby MK1 or Ruby MK2 ? How do you tell the difference? by Doug Castle, Seven Focus in October 2016 pp22-24..

          
The differences in our 'Sevens'  by Doug Castle, appeared in Seven Focus,Aug 2008 pp18-20.


Brakes

           Big Seven Brakes by Trevor Sharp, Seven Focus in Mar 2004 p12-15.

Brake Lever Fouled   by Mike Davies, Seven Focus in December 2015 p15.

Brake shoe problems by Andrew Jarmin, Seven Focus, March 2013 p25.

 

Breakdown Spares and Tools by Andrew Jarmin,  Seven Focus in Mar 2004 pp8-9 and April 2004 p8.

Roadside Electrical Breakdown by Andrew Jarmin,  Seven Focus in Jun 2006 pp16-18

Fuel starvation - Cause of Breakdown

see also Breakdown in Europe - what happened next by Geoff Hardman,Seven Focus in Oct 2009 pp13-15.

 
Chassis and bodywork

Bending Ash Frames by Steve Martin, Seven Focus in Feb 2008 pp 16-18.

Crackle Finish Paint (Dashboard) by Malcolm Watts,  Seven Focus Feb 2004 pp8-9.

Forming a Sheet Metal Flange by Malcolm Watts, Seven Focus in Aug 2002 pp 22-23.

Nifty Luggage Rack by Mike Davies, Seven Focus in Feb 2007 pp24-25.

 

 
Clutch

Clutch Pedal Adjustment by Sandy Croall, Seven Focus, May 2012 pp24-26.

Clutch Overhaul by Mike Davies, Seven Focus in Dec 2004 pp6-10.

Jamming Clutch by Geoff Hardman, Seven Focus in June 2010 pp18-19.

 
Cooling System

Radiator Repair by Malcolm Watts, Seven Focus in Jun 2006 pp6-7.

 
Dashboard Instruments

Lucas 'Magmo' speedometer overhaul  by Mike Davies, Seven Focus in Feb 2009 pp 16-19.

Restoration of the Lucas SM5 Switchboard  by Peter Kemp, Seven Focus in May 2002 pp 10-13.

 
Electrical and Ignition

The Austin Seven Charge Circuit   by Ian Leaver, Seven Focus in Dec 2009, pp 23-25.

Electrical System Explained  prepared by Andrew Jarmin as the subject of a Teach-In.

The Lead Acid Battery by Ian Leaver, Seven Focus in February 2011pp18-21.

A Charging Refresher by Geoff Hardman, Seven Focus in Oct 2007 pp 17-22.

Armoured Wiring - unexpected hazards  by Geoff Hardman, Seven Focus in Nov 2006 pp14-15.

Bosch Distributor Conversion  by Mike Davies, Seven Focus in Sept 2004 pp8-9.

Charging Fault Finding   by Geoff Hardman, Seven Focus in May 2006 pp13-15.


Conversion to 12v  by Malcolm Watts, Seven Focus in Mar 2001 pp20-24.

Early 12v Conversions  by Malcolm Watts, Seven Focus in Feb 2007 p16.

12v Conversion - another way  by Steve Martin, Seven Focus in Mar 2007 p16-17.

Converting 6v Cut-out to 12v  by Lee Webster, Seven Focus in Mar 2007 pp24-25.

 A 6v to 12v Converter (if you wish to fit a Sat-Nav or other accessories!)  by Geoff Hardman, Seven Focus in Jul 2008 pp25-26. 

 

Cut-out Repair and Re-winding  by Geoff Hardman, Seven Focus in Jan 2007 pp18-20.

Distributor Set Up  by Geoff Hardman and Andrew Jarmin, Seven Focus in July 2009 pp22-24, and Aug 2009 pp23-26.

Distributor Maintenance  by Anon, Seven Focus Mar 2002, pp21-23.

Dynamo - How it Works, Servicing and Repairs by Malcolm Watts, Seven Focus in Nov 2000 pp12-17.

 

How it Works - Ignition Coil  by Geoff Hardman, Seven Focus in Apr 2007 pp24-25.

How it Works - the Cut-out  by Geoff Hardman, Seven Focus in Nov 2006 pp6-8.

 

Ignition Timing Marks  by Sandy Croall, Seven Focus in Oct 2004 pp24-25.

 

No Charge - Batteries  by Geoff Hardman, Seven Focus in Aug 2005 pp20-21.

No Charge - Dynamo Testing  by Geoff Hardman, Seven Focus in Sep 2005 pp20-22.

No Charge - the Cut-out  by Geoff Hardman, Seven Focus in Oct 2005 pp16-18.

 

Repairing and Servicing a Rist Horn  by Steve Baldwin, Seven Focus in Dec 2002 pp 16-18.

Repairing a PLC Switch  from the wartime issue of "Automobile Electricity" 1940.

Retuning the horn button   by Geoff Hardman, Seven Focus in May 2017 pp 20-22.

 

Sparking Plugs  by Mike Davies, Seven Focus in Dec 2008 pp22-25.

Sparking Plugs - curing heat range problems by Geoff Hardman, Seven Focus,  April 2015 pp16-18.

Starter Motors  by Anon, Seven Focus December 2000,p14.

 

Testing Electrics on an Historic Car by Geoff Hardman, Seven Focus, August 2015 pp25-27.


Wiper Motor Adjustment  by Malcolm Watts, Seven Focus in May 2001 pp 10-11.

Wiper Motor Restoration by Lee Webster, Seven Focus in Apr 2007 p20.

DW3 Wiper Motor Improvements  by Sandy Croall, Seven Focus in Mar 2006 pp 13-15.

Wiring, Thick and Thin  by Geoff Hardman, Seven Focus, March 2012 pp28-29

 

Back

 

Engine
Austin Seven Engine Stand   by Andrew Jarmin, Seven Focus March 2013 pp22-23.


Box Saloon Fan Pulley and Belt Tension  by Sandy Croall, Seven Focus April 2010 p21 and August 2010 pp 24-25.

Box Saloon Nose Cones  by Sandy Croall, Seven Focus April 2004 pp 6-7.

 

Camshaft Bearings - Ruby  3-bearing engine by Bob Kneale, Seven Focus April 2016, pp24-25
  
Camshaft Bush Modification  by Mike Davies, Seven Focus in Mar 2006 pp16-17.

Crankshaft Conversion 1½" (pressurised)  by Mike Davies, Seven Focus in Mar 2006 pp16-17.

Crankcase Front Bearing Housing Repair by Malcom Watts, appeared in Seven Focus in Feb 2014 pp16-17.

. . . .   and Front Main Bearing Retaining Lip  by Malcolm Watts, originally appeared in Seven Focus.

Do Not Use Silicone Sealer - a warning  by 'Techno', Seven Focus in Nov 2006 pp22-23.

Every Piston Tells a Story  by Malcolm Watts, Seven Focus in Jan 2006 pp16-18.

Good Sump Joints  by Malcolm Watts, Seven Focus in Feb 2007 p23.

How to Replace Core Plugs  by Andrew Jarmin, Seven Focus in Feb 2001 pp 20-23.


Leaky Camshaft Bolt  by Steve Baldwin, Seven Focus in Dec 2003 pp16-17.

Leaks - dealing with different problems  by Vince Leek, Seven Focus Jan 2003 p18; Feb 2003 p25; Mar 2003 p25; Apr 2003 p25; May 2003 p24 and Jun 2003 p24.

Little End Bolt Failure  by Mike Davies, Seven Focus Nov 2002 pp21-22. 

Little End Bolt Failure (Second Thoughts)  by Malcolm Watts, Seven Focus Nov 2002 pp22-24.

Locating the Starting Handle  by Malcolm Watts, Seven Focus in Mar 2005 pp20-21.

 

Oil Feed Pipe - Ruby MK2 three-bearing engine  by Mike Davies, Seven Focus  Dec 2012 p22;  Ian Leaver, Seven Focus Jan 2013 pp 14-16. and Ron Hayhurst, Seven Focus March 2013 pp18-19.


Pressure Feed Nose Cone Modification  by Mike Davies, Seven Focus in Apr 2008 p25.

Repairing a Cracked Head  by Malcolm Watts, Seven Focus Jan 2004 pp16-20.

Repairing Stripped Threads with Thread Inserts by Anon, Seven Focus in Oct 2002 pp16-17.

Repairs to the Front Main Bearing Housing  by Malcolm Watts, Seven Focus.

 

Sealing a Valve Chest Cover  by Sandy Croall, Seven Focus, June 2012 p18.

Tapping a Hole  by Malcolm Watts,Seven Focus Mar 2002 pp24-25.

Transmission Noise  by Malcolm Watts, Seven Focus Aug 2004 pp26-29.

 
Fuel System

AC Mechanical Petrol Pump  by Anon, Seven Focus Sept 2007 pp19-20

 

Carburettor compensation  by Paul Newman, Seven Focus in March 2011, pp28-29.

Carburettor Jet  Author unknown, but a member of CA7C.

Carburettor Throttle Spindles (Zenith 26VA)  by Steve Martin, Seven Focus in Jun 2005 pp21-22.

 

Electric Fuel Pump  by Andrew Jarmin, Seven Focus in March 2010 pp 19 - 21.

 

Fuel Additives  by Geoff Hardman, Seven Focus, July 2007 pp13-14.

Fuel Gauge working or not?  by Malcolm Watts, Seven Focus Sept 2001 pp20-23.

Fuel Pump Notes  by Sandy Croall, Seven Focus June 2009 p19.

Fuel System Explained  by Andrew Jarmin, as the subject of a Teach-In.

 

How it Works - carburettors (part 1)  by Malcolm Watts, Seven Focus Dec 2006 pp16-18.

How it Works - carburettors (part 2)  by Malcolm Watts, Seven Focus Jan 2007 pp13-15.

 

Oil from the Fuel Pump  by Malcolm Watts Seven Focus  May 2014 pp20-21.

Replacing Petrol Pump Diaphragm  by Andrew Jarmin, Seven Focus Jan 2001 pp21-26.

Sealing a Fuel Tank  by Malcolm Watts, Seven Focus Apr 2002 pp7-10.

Stale Fuel   by Doug Castle, Seven Focus in Oct 2008 pp24-25, Apr 2009 pp18-19 and Dec 2009 p22.

 

Gearbox and transmission

           Austin Seven Rear Axle - Light or Heavy?  by Doug Castle and Andrew Jarmin, October 2016

1st Gear Jumps Out  by Doug Castle and Andrew Jarmin, Seven Focus Oct 2009 pp21-23.

Does your Austin jump out of gear?  by Chris Gill, Seven Focus May 2013 pp26-28.

Flywheel Oil Seal Improvement  by Malcolm Watts, Seven Focus Apr 2007 pp18-19.

Flywheel Oil seals  by Steve Martin, Seven Focus Nov 2010 pp16-19.

Gearbox Oil Seals  by Malcolm Watts, Seven Focus Apr 2007 pp16-17.

Gearbox Overhaul  by Dai Barnes, Seven Focus in Feb 2016 pp12-18.

Hardy Spicer Propshaft Overhaul  by Mike Davies, Seven Focus  May 2007 pp22-24.  

Mechanical Failures (Half Shafts)  by Anon, Seven Focus.

Propshaft Howl - cause and cure  by Geoff Hardman, Seven Focus Sept 2008 pp 22-24.

Removing the Differential Bearings by Bob Kneale, Seven Focus in Oct 2015 pp 22-24.

Replacing a 3-speed Gearbox with a 4-speed  by Malcolm Watts, Seven Focus Oct 2002 pp14-17.

Synchromesh Set-up  by Geoff Hardman & Mike Davies, Seven Focus Feb 2008 pp12-15.

Torque Tube Pinion Removal  by Malcolm Watts, Seven Focus Mar 2007 pp20-21.

 

Indicators

6 Volt Semaphores  by Geoff Hardman, Seven Focus in Feb 2006 pp17-19.

Fitting Flashers - but keeping the semaphore signals  by Geoff Hardman, Seven Focus in Apr 2005 pp13-15.

LED Lights for Trafficators  by Geoff Hardman, Seven Focus in Jan 2007 pp16-17.

Lucas TCS34 Self-cancelling Indicator Assembly Repair  by Mike Davies, originally appeared in Seven Focus, August 2016 pp16-23

Optional Flashing Indicators - Legal Requirements (UK)  by Doug Castle, Seven Focus in Mar 2004 pp21-23.
(Flashing indicators; Rear retro-reflectors and Rear fog lamp)

 

Lighting

Dipping Solenoids  by Geoff Hardman, Seven Focus in July 2010 pp15-17.

Improving the Quality of Austin Seven Headlights by Anon, Seven Focus in Jan 2001 pp18-20.

LED 6v Sidelights and Headlights by Geoff Hardman, Seven Focus in Dec 2013 pp24-25. 

Stop/Tail Lights  by Sandy Croall, Seven Focus Mar 2005 pp16-19.

 
Miscellaneous

Austin Seven Tool Kits  by Doug Castle for the CA7C website, August 2015.

Austin Seven Tool Roll aka Tool Wrap  by Doug & Janet Castle for the CA7C website, August 2015.

Crackle Finish Paint by Malcolm Watts, originally appeared in Seven Focus Feb 2004 pp8-9.

 

Old Style Number Plates  by Anon, Seven Focus Jan 2001 pp16-17.

Paint Your Plates  by Sandy Croall, Seven Focus May 2006 pp22-23.

Paint Your Own Number Plates  by Sandy Croall, Seven Focus Aug 2006 pp24-25.

Temporary High Reflective number plates for 'Sevens'  Original author of this idea unknown.

 

Rust removal by electrolysis  by Roger jelbert, appeared in Seven Focus June 2016 pp 26-28

 

SatNav as a Speedometer  by Geoff Hardman, Seven Focus May 2008 p26.

What? a Sat Nav in your Austin Seven !!??!!!    by Eddie Angell, Seven Focus April 2009 pp20-21.

 

Tool Box Covers  by Sandy Croall, Seven Focus.

Wood Grain Effect  by Malcolm Watts, Seven Focus.

 

Roadworthiness

Austin Seven Check-up (DIY MoT) by Geoff Hardman and Mike Davies, Seven Focus in April 2015 p11-16.

 
Steering and Suspension

Adjusting the play in the Steering Drag Link  by Malcolm Watts,  Seven Focus Sept 2000 pp12-13.

Renewing the front spring shackles  by Andrew Jarmin, Seven Focus Sept 2000 pp5-6.

Steering Arm Joint  by Bob Kneale, Seven Focus April 2016, pp26-27.

Steering Box Overhaul  by Malcolm Watts,Seven Focus Apr 2008 pp22-24.

Steering Box and Track Rod  by Alan Moore, Seven Focus February 2009 pp13-15.

 

Upholstery

Austin Seven Rear Blind  by Doug Castle, August 2015.

Care  for Your Leather Upholstery  by Regi Jarmin, Seven Focus Feb 2007 pp24-25.

 
Wheels and Tyres

New Spokes in a 19" Wheel  by Malcolm Watts, Seven Focus Jan 2003 pp23-25.

Wheels a follow up  by Malcolm Watts, Seven Focus Mar 2003 pp14-16.

Salvaging Wheel Centres  by Geoff Hardman, Seven Focus March 2010 pp22 - 23.

 

Fitting an Inner Tube  by Andrew Jarmin, appeared in Seven Focus in Nov 2015 pp10-14

Tyre Ageing and the DOT Code  by Doug Castle, Seven Focus Feb 2007 pp18-19 and January 2010 pp 20-22.

Tyre Sizes   by Mike Easton, Seven Focus Mar 2004 p9.

 

Back