Citroën 2cv Cammionette History

© Copyright: J.Cats.


1951
March: The AU is introduced. Differences with the A are 7x31 crownwheel pignon (normally 8x31), speedo gear with 18 teeth, 10mm plate between chassis and rear axle mountings, fueltank fitted to the right side of the body, 135x400 tyres, spare wheel is fitted to the left of the body. On the rear, the panels next to the doors are flat without reinforcements. Topspeed 60 km/h.
October: Suspension; No rubber protector on the bottom of the rear batteur any more.
November: Bonnet; The edge of the grill now has visible screws.

1952
The panels next to the rear doors on the AU are no longer flat.
February: Gearbox; gets a 28mm input shaft.
March: Speedo; is replaced by one made by E.D.
April: Accellerator; the accellerator rod gets ball pivots.
May : Gearbox; the clutch pressure plate now has 3 springs instead of 6.
June: Brakes; backplates are steel instead of aluminium, the front brake drums get 4 ridges instead of 3, new handbrake cables.
September: Engine; the cupper seal between the head and the barrel is left out.
Suspension; the front axle tube is now 65.5mm diameter instead of 64.5mm due to an increased diameter steering rack.
October: A grey steeringwheel and scottish plaid, plastic covered upholstery.
November: Electric; dynamo is now fixed with 2 bolts instead of 3, this also means engine mods.

1953
March: Bonnet; the oval around the chevrons on the bonnet dissapears.
May: Bonnet; the welding seams on sides of the bonnet change, top to bottom becomes front to rear.
Bonnet; is now opened with a turning handle instead of the pull handle.
Suspension; arms front and rear get 25.5mm bearings instead of 28.5mm.
June: Engine; now has a 4 blade fan, different airfilter and strengthened crankshaft.
Doors; door edges are turned instead of welded. The opening mechanism on the front sidescreens is modified.
The bonnet gets a central rod support instead of the tubular frame.
July : Steering; the steering tube is modified.

1954
January: Electric; the Paris Rhone dynamo is improved.
March: The PO version is available. This has modified chassis, suspension, airfilter and other things to make it suitable for rough terrain and the overseas territories.
April: Electric; the voltage regulator is moved from the left to the right of the firewall.
Fueltank; the fuel filler pipe is reduced in diameter from 55 to 45mm, so is the hole in the rear wing.
Doors; the doors get a rubber to keep the windows in the upright position.
June: Headlights; the clip on the Cibie headlights is no longer screw on.
July: Electric; the rectangular metal coil is replaced by a round one, completely covered in rubber, headlight support modified for this.
September: New model, the AZU. 425cc engine, 12hp, 6 blade fan, 6.2:1 compression, 70 km/h, 8x31 crownwheel pignon. Electric; AZ rear lighting now has 2 rear lights with 1 integrated brake light. Also indicators on the C post doubling as position lights. For this a plate is fitted to the dash with the indicator switch and parking light switch.
Electric; the battery is no longer secured with a U profile but with a V one with two pullrods spring loaded. Gearbox; gets an 8 tooth primary shaft.
Dashboard; the handbrake lever is increased in diameter from 12mm to 13mm.
October: Headlights; apart from the Cibie also Marchal Equilux headlights are fitted, identifiable by the steel edge on the lense.
December: Dashboard; the starter cable is modified.
Suspension; The AZU gets visible springs. For this the chassis is adapted.

1955
The AU is no longer in the pricelist and is only rarely sold any more.
January: Electric; Indicators sides of the luggae compartment and the AU gets the same lights and electrical equipment as the AZU.
April: Electric; the wiring gets 4mm connectors instead of 2.5mm ones.
Production is transfered to the Panhard factory at l'avenue d'Ivry, Paris.
Dashboard; the speedo gets a light.
May: Suspension; the AZU gets the normal suspension again.
June: Suspension; the springs on either end of the spring retainer tube are replaced by rubber doughnuts, 2 on the front and 1 on the rear of the pot. September: Electric; the Dynamo is modified.
Headlights; there is an alu edge on the lense/reflector on the Cibie headlights.
November: Engine; compression on the AZU is raised from 6.2 to 7:1 by using domed pistons. Also new carburettor.
December: Gearbox; the clutch plate and primary shaft now have 10 teeth instead of 8.
Dashboard; gearlever ball is now gray instead of black.
Interior; seat frames are dark gray.

1956
January: Electric; a second horn is fitted.
May: Body; there is a hole on either side of the windscreen to let out water.
April; Doors; seal fitted to the top of the opening front window.
July: Dashboard; apart form the Jaeger and E.D. speedos an O.S. one is now also availbale.
September: Electric; the Paris Rhone starter is modified.
December: The wheels, bumpers, steeringwheel, seat frames and gearlever ball are all light gray.
Body; rear roof is one piece instead of 3 piece so no welding seams front to back, opening for the indicators in the ripples and a potruding edge on the front of the roof with aditional profiling on the front of the luggage compartment.
Doors; Flexarmit door covers.

1957
January: Electric; the rear lights are changed again.
May: Brakes; all 2cvs get a glass lockheed brake fluid resevoir.
August: Engine; Some engines get forged ribs on the cylinders.
October: Bonnet; a rubber is fixed to the bottom of the bonnet.

1958
Suspension; the spring retainers are lighter and have a smaller diameter.
January: Gearbox; the rear mount is changed and will remain like this to the end.
February: Brakes; the front brakedrums lose 2 ridges and are now completely smooth.
July: Suspension; front batteur modified, now left and right are different.
September: Engine; all engines get forged ribs on the cylinders.
November: Interior; the sun visor is fixed with 2 screws instead of 4.

1959
May: Dashboard; new heating system with small windscreen demister on the left of the dashboard.
Gearbox; some cars fitted with constant velocity driveshafts.
July: Suspension; only one rubber doughnut on the front of the spring tube instead of 2.
Interior: cardboard sun visor replaced by plastic one.
September: Suspension; new fully closed 125x380 wheels and tyres. Kingpins are also modified.

1960
January: Electric; new horn fitted.
June: Electric; New starter.
Doors; new doorlocks with 4 digits on the key instead of 3.
July: Interior; the seats are now secured to the chassis at the back as well.
September: Interior; top of the seat frame and dashboard edge covered, metal knob with rubber cover for shutter, everything that is not the body colour is light gray.
November: Electric; hard plastic coil replaces rubber covered one.
Body; windsreen rubber is curved instead of hollow.
Engine; the AU 375cc version is discontinued.
November: Gearbox; constant velocity driveshafts discontinued.
December: Bumper; new bumper shared with the berline.
Dashboard; new position light switch with plastic handle instead of steel one.

1961
Additional profiling next to the rear license plate.
Through Citroën several side windows made by Glaçauto are available.
April; Engine; oilcooler is modified.
July 10th: Body; new 5 ripple bonnet with detachable grille.
October: Engine; the compression is raised to 7.5:1 giving 13.5 hp. Topspeed is now 85km/h.
Dashboard; speedo runs up to 100km/h instead of 90.
November: Dashboard; the ampere meter is replaced by a red warning light.
Electric; the connections for the headlights are now on the left side of the headlight bar.

1962
February: Brakes; a new master cylinder is fitted, similar to the Ami 6 one, brake hoses are also changed.
Bonnet; the grille now has countersunk screws 371mm apart instead of 426mm.
April: Engine; the carburetor is upgraded and more heater ducts enclosing the sparkplug.
May: Dashboard; Radioën option is discontinued.
July: Electric; improved dynamo and starter, one horn with double function.
September: Dashboard; integrated dashbord with fuel gauge, speedo and total distance counter fitted behind the steering wheel. Dashboard; windscreen wipers are now electric. Heating is modified. Steering tube is larger diameter.
Green cloth for interior.

1963
January: Oilpump and the gearbox is modified with 8x31 crownwheel pignon.
February: Engine; 18hp, identified by 4 manifold bolts on each side instead of 3, 95 km/h topspeed.
Ami 6 wheels, the brake linings are glued instead of rivited, plastic door covers stapled to cardboard, new bigger bumpers.
March: Body; bigger square windows in the rear doors, the sides of the rear body get a flat piece with a window in them.
Doors; rear view mirror moved from wing to door.
Headlights; Chrome trim on the Cibie and Marchal units.
April: Electric; red plastic indicators replacing steel covered ones.
May: The AK appears. This is a 20cm longer version of the AZU with the Ami 6 602cc engine, 350kg load capacity.
June: AK available with glacauto "week-end" or "break" fittings.
September: Suspension; the AK gets for telescopic shockabsorbers.
October: Dashboard; the indicators are now operated by a lever on the steering tube.

1964
January: Body; dents in the roof over the driver and passenger on all types.
Interior; seatbelts are optional. For this the chassis and body have been modified.
March: Electric; rear lights with integrated licenseplate light???.
April: A round plate with the colour number placed on the firewall.
June: Wheels; tubeless tires and modified rims.
July: Brakes; reduced diameter line from 6mm to 4.5mm.
November: New gearbox ratios for the AZU.
December: Doors; front doors are no longer suicide but open at the rear.

1965
January: Suspension; the AK gets shockabsorbers all round.
May: Interior; round interior light is replaced by a rectangular one with switch.
Mai: Steering; on the AK the steering rods are secured by nyloc nut and no longer with split pins.
June: Steering; the steering rods are secured by nyloc nut and no longer with split pins.
July: Lights; Parking light through rear light and no longer through indicator.
September: Body; optional opening panel above the rear doors, licenseplate fitted below the bumper.
Grille; one piece grille is replaced by 3 horizontal bar grille, chevrons mounted on the bonnet.
Bumper; new bumpers with black nylon in the center.
Suspension; on the AZU the frotteurs at the rear are replaced by telescopic shockabsorbers. At the front the frotteurs are protected by extra rubber.
Gearbox; optional constant velocity driveshafts.

1966
February: Electric; 12V instalation with alternator on the AK.
March: Suspension; constant velocity driveshafts on the AK.
May: Dashboard; steering lock is optional.
Gearbox; fine splines on the primary shaft of the AZU.
April: Option; heater running on fuel from the fuel tank, it has a inlet on the front wing and runs on 12V electrics.
September: The handbrake now has a plastic handle.
Doors: new securing clips for keeping the front side windows open.
Engine: the AK gets sound deadening on the engine shrouding.
Handbrake: the AK gets a new handbrake lever.
December: Engine; the valvecovers are now secured with a conical base nut.

1967
May: Bonnet; the bonnet securing mechanism is simplified to one piece operated underneath the bumper.
August: The AZU gets an uprated 21hp 425cc engine.
October: The AK350 gets a fully new gearbox, modern type.

1968
March: Gearbox; AZU gets new gearbox ratios.
May: The AK350 gets an uprated 33hp engine, hanging pedals and a modified heating system.
September: Brakes; the return springs on the rear brake shoes are replaced by U shaped rods.
October: Electric; twin rear brake lights, orange indicators replacing red ones.
Engine; ignition box is modified.

1969
March: Engine; alloy valve covers are replaced by steel ones.
April: Brakes; rear flexibel brake hoses replaced by spirale shaped lines 3.5mm inside the rear axle on the AK.
July: Supension: AZU, the plates under the rear axle are removed, the spring cylinders are changed and the height of the chassis is readjusted.
September: Dashboard; steering lock and windscreen washer.
Headlights; Marchal and Ducellier headlights are discontinued.

1970
February: 12V electrics, hanging pedals, modified heating, Ami 6 rear lights on a modified rear body panel, front square indicators on the wings, front side windows in stainless steel, new black plastic 2 spoke steeringwheel and big dashboard.
April: Interior; 2 point seatbelts standard.
June: Brakes; the diameter of all brakelines is changed 3.5mm on the AZU.
Lights; the front square indicators are replaced by round ones.
Brakes; The rear flexible brakehoses are replaced by spring shaped brakelines in the rear axle.
July: AK is replaced by AKS, wide ripples on rear wings, covers and rear doors, 12cm raised roof, big berline dashboard, plastic berline steering wheel, interior light, no side indicators.
September: Engine; the AKS engine gets a 9 blade ventilator.
October: Body; the rounded rubber profile on the bumpers is replaced by a gray one with different shape.
November: Engine; the AKS engine gets an external oil filter.
Suspension; telescopic shockabsorber replace rear frotteurs and batteurs on the AZU.
December: Interior; black plastic rear view mirror.

1971
September: Interior; the diameter of the brake and clutch pedal pivot is enlarged.
Dashboard; AZU gets plastic steering wheel to replace steel one.
Suspension; telescopic shockabsorber replace rear frotteurs and batteurs on the AKS.
October: Suspension; some AZU get special Rzeppa driveshafts.

1972
January: Body; AZU gets wide ripples, no side indicators, hanging pedals, officially called 250.
AZU serie A with 425cc engine 6V, serie A for big corperations only.
AZU serie B with 435cc engine 12V.
August: Engine; new carburettors for all cars.
September: Interior; strengthened hinges.
Suspension; eyes on spring pull rods are no longer round but now hexagonal.
AZU serie A is discontinued.
October: Engine; hardened bolt for fixing ventilator.

1973
July: Brakes; bigger master brakecylinder.
Lights; position lights discontinued, along with 3 position switch on dashboard.
Dashboard; ashtray fitted into plastic cover for wiper motor and ventilation deflector.
Dashboard; brown plastics replacing gray-blue.
Dashboard; 250 gets big speedo.
Electric; voltage regulator fitted to the battery.
Electric; AKS get start button to replace pull starter.

1974
January: Body; no side windows.
March: Engine; hardened toothed belt on the flywheel.
September: Body; square headlights, plastic grille with chrome edge and chevrons inside, bigger rear bumper, black rubber protector replaces gray one.
Dashboard; starting button replaced by starting with the ignition key, choke moved from left to right.

1975
January: Engine; the airfilter gets a black plastic cover.
March: Engine; AKS exhaust modified to reduce noise levels.
September: Suspension; front telescopic shockabsorbers replace batteurs and frotteurs.
Body; the rubbers on the bumpers are replaced by black tape.
Steering; new steering ratio and a smaller 2 spoke hard plastic steering wheel.
Dashboard; Steering lock standard.

1976
March: Engine; new crankshaft seals.
August: All plastic interior parts are black again. The speedo backplate remains brown.
September: Brakes; dual feed brake resevoir, brake fluid level sensor, warning light and light test button.
Suspension; fixed Ami suspension tubes on the AKS.
October: Body; The type plate on the bootlid is now a plastic sticker.

1977
February: Body; side windows again.
July: Interior; 3 point fixed safety belts, piramids on the inner wings.

1978
March: 250 and AKS replaced by Acadiane.


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