Aston Service Dorset : DB2/4 MkIII Brakes & Pedal Gear
       
      Aston Service Dorset : Aston Martin DB2 + DB2/4 MkI - MkII  
           
    Brakes + Pedal Gear

     Drum Brake (Plate AA)
     Disc Brake (Plate AB)
     Foot Controls (Plate AD)

  Engine

  Fuel, Cooling + Exhausts

  Transmission

  Suspension + Steering

  Electrical + Instruments

  Chassis, Frame, Body, etc.
    For all Parts Catalogues, Workshop Manuals and Instruction Books please follow the link to the technical publications page.

Aston Service Dorset : Front Brake


The front drum brakes are 12in x 2 i/4in Girling.

The shoes are operated by two 1in diameter wheel cylinders of simple construction, located diametrically opposite each other on the back plate.

12" Disc Brakes were fitted as standard to all MkIII's from AM300/3/1401, officially known at the time as MkIIIB's, though only the first car 1401 had 3B on the build sheet documentation.

The 100 cars from AM300/3/1300 were offered with disc brakes on the front after the prototype AM300/3A/1300 having had discs fitted to all four wheels. These were designated 3A's though only 14 ever opted for the discs before they became standard at AM300/3/1400.


Aston Service Dorset : Rear Brake

The rear drum brakes in the early MkIII's are the same as were fitted to the later MkII's from 1201 onwards and have 12in x 1 3/4in drums, hydraulic non-servo, sliding shoe, with internal handbrake mechanism.

These shoes are hydraulically operated by a hydraulic wheel cylinder, which consists of a die cast aluminum housing, two pistons complete with dust covers's, seals, bakelite seal retainers and retaining spring.

The MkIII's retained the 1" hydraulic wheel cylinders up to AM300/3/1400, at which point they change to 3/4" cylinders. At AM300/3/1561 these again changed, this time to 7/8" cylinders.

The Brake Shoe & Lining Assembly remained 1 3/4" until AM300/3/1400, subsequent cars were fitted with 2 1/4" assemblies giving substantially more stopping power.

The following spare parts are currently available for the Brake System, for anything else please contact us for details:




Aston Service Dorset: Brake System

Aston Service Dorset : High Pressure Brake Hoses   55679

55619
  High Pressure Hose Assembly Front

High Pressure Hose Rear
         
Aston Service Dorset : Supply Tank   54550   Dual Supply Tank, Complete
         
Aston Service Dorset : Handbrake Cable MkII   78681   Cable Assembly, Handbrake, Rear
         
Aston Service Dorset : Short Handbrake Cables   55762
  Cable Assembly, Handbrake, Short
         
Aston Service Dorset : Front Handbrake Cables   53302
  Cable Assembly, Handbrake, Front
         
Aston Service Dorset : Handbrake Abutment   55783

55784
  Abutment Link

Block Link
         
Aston Service Dorset : Brake Master Cylinder   70180




55747
  Brake Master Cylinder Complete

Available re-conditioned exchange only!

Stop Lamp Switch
         
Aston Service Dorset : Rear Hydraulic Wheel Cylinders   55706


55707
  Rear Hydraulic Wheel Cylinder 1" N/S

Rear Hydraulic Wheel Cylinder 1" O/S

For use up to Chassis No AM300/3/1400
         
Aston Service Dorset : Front Hydraulic Wheel Cylinders   55651

55665
  Front Hydraulic Wheel Cylinder 1" N/S

Front Hydraulic Wheel Cylinder 1" O/S

For use up to Chassis No AM300/3/1400
         
Aston Service Dorset : Seal Kit Rear   74670   Complete Seal Kit for Rear 1" Hydraulic Wheel Cylinders

Includes 4 x Seals, 4 x Dust Covers and 2 x Bleed Nipple Covers
         
Aston Service Dorset : Seal Kit Rear   74670   Complete Seal Kit for Front 1" Hydraulic Wheel Cylinders

Includes 4 x Seals, 4 x Dust Covers and 2 x Bleed Nipple Covers
         
Aston Service Dorset : Seal Kit Brake Master Cylinder   70183   Seal Kit for the Brake Master Cylinder
         
Aston Service Dorset : Rear Brake Shoe Set   54452/55   Rear Brake Shoe Set, up to Chassis No AM300/3/1400

RE-LINING OF CUSTOMERS OWN SETS ONLY!
         
Aston Service Dorset : Front Brake Shoe Set   55664/44   Front Brake Shoe Set, up to Chassis No AM300/3/1400

RE-LINING OF CUSTOMERS OWN SETS ONLY!
         
Aston Service Dorset : Brake Shoe Springs   55670

55726

55727
  Front Shoe Return Spring

Top Rear Shoe Return Spring

Bottom Rear Shoe Return Spring

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Aston Service Dorset : Disc Brake System

Aston Service Dorset : Rear Brake Shoe Set   54452


54455
  Shoe and Lining Assembly, Rear Brake, Leading - RE-LINING ONLY

Shoe and Lining Assembly, Rear Brake, Trailing - RE-LINING ONLY


         
Aston Service Dorset : Pedal Pad Rubbers   90292


90291
  Rear Hydraulic Wheel Cylinder 7/8" O/S

Rear Hydraulic Wheel Cylinder 7/8" N/S

From Chassis No AM300/3/1561
         
Aston Service Dorset : Seal Kit Rear   90300   Complete Seal Kit for Rear 7/8" Hydraulic Wheel Cylinders

Includes 4 x Seals, 4 x Dust Covers and 2 x Bleed Nipple Covers

From Chassis No AM300/3/1561
         
Aston Service Dorset : Seal Kit Rear   90069   Complete Seal Kit for Rear 3/4" Hydraulic Wheel Cylinders

Includes 4 x Seals, 4 x Dust Covers and 2 x Bleed Nipple Covers

From Chassis No AM300/3/1401 to 1560
         
Aston Service Dorset : Seal Kit Rear   54885   Master Cylinder, Clutch
         
Aston Service Dorset : Seal Kit Rear   53339   Clutch Master Cylinder Seal Kit
         
Aston Service Dorset : Seal Kit Rear   73370   Slave Cylinder, Clutch
         
Aston Service Dorset : Seal Kit Rear   54914   Clutch Slave Cylinder Seal Kit
         
Aston Service Dorset : Brake Master Cylinder   70180




55747
  Brake Master Cylinder Complete

Available re-conditioned exchange only!

Stop Lamp Switch
         
Aston Service Dorset : Brake Master Cylinder   70183




  Seal Kit for the Brake Master Cylinder
         
Aston Service Dorset : Pedal Pad Rubbers   54864   Disc, Front Brake
         
Aston Service Dorset : Pedal Pad Rubbers   21-28-112   Lining Pad Assembly
         
Aston Service Dorset : Pedal Pad Rubbers   21-28-707

21-28-708

21-28-709
  Piston, Stainless Steel

Boot, Piston

Ring Seal



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Aston Service Dorset : Pedal Gear

The following pedal gear replacement parts are available:


Aston Service Dorset : Pedal Pad Rubbers   20-29-141   Pedal Pad Rubbers
         
Aston Service Dorset : Brake Pedal Bushes   113465   Bush, Pedal Assembly, Brake and Clutch
         
Aston Service Dorset : Pedal Gaiter   72574   Pedal Gaiter
         
Aston Service Dorset : Pedal Return Spring   55583   Pedal Return Spring
         
Aston Service Dorset : Accelerator Cable RHD   77309   Cable, Accelerator, Right Hand Drive
         
Aston Service Dorset : Accelerator Cable LHD   77310   Cable, Accelerator, Left Hand Drive
         
Aston Service Dorset : Brake Master Cylinder   70180




55747
  Brake Master Cylinder Complete

Available re-conditioned exchange only!

Stop Lamp Switch
 
           
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