Brakes

General Description

All models are fitted with the same disc assemblies at the front and assemblies on the rear wheels. The Series 1 is fitted with single circuit system and may be fitted with an 'in-line' servo (optional extra). All other models are fitted with dual-circuit 'brake systems and a Pressure Differential Warning Actuator (PDWA),which operates a 'Brake Fail' indicator on the dash,the circuits being split front and rear. Early Series 2 Vixens had a servo available as an optional extra,but this became standard in early 1969.The Series 3 using the same unit as a standard fitment.The servo fitted to the Series 2 & 3 is of the 'tandem' type, being fitted between the brake pedal and master cylinder and not between the master and slave cylinders as on the Series 1. The location of the brake servo on Series 1 is, to say the least, random; but the servo on the Series 2 & 3 is always on the drivers side of the bulkhead with the master cylinder mounted on it. The handbrake is operated by twin cables leading to the rear drum brakes from the handbrake lever which is centrally mounted on the transmission tunnel adjacent to the gear lever.

Maintenance

The braking system should receive careful and regular service as they can affect the safety of the vehicle. Although the brakes should undergo thorough checking every 6,000 miles this period should be reduced in dusty or wet climates, or if the car is regularly driven very quickly which can cause premature wear of the lining material or corrosion of the smaller mechanical components.

Front Brake Caliper Pad Renewal

When the friction pads are reduced to 1/8" (3 mm.) thickness, or if they are of insufficient thickness to ensure safe braking for a further 6,000 miles (10,000 km.) then they should be renewed. It should be noted that the footbrake should not be depressed whilst the pads are removed or the caliper pistons may be expelled from the calipers and the system require bleeding.
  1. Apply the handbrake firmly, jack up the front of the car and remove the front road wheels.
  2. Release the retaining clips(l) and remove the pad retaining pins(2).
  3. Lift the friction pads(3) and the anti-squeal shims(4) from the caliper. Important. Do not depress the brake pedal with the pads removed.
  4. Clean the exposed faces of the pistons and the recesses into which the pads fit, then very carefully push the pistons back into the calipers. Note. This action will displace fluid back into the master cylinder reservoir. To prevent over-flowing, syphon off surplus fluid.
  5. Fit the pads and anti-squeal shims, ensuring that the arrows on the shims are pointing in the direction of wheel rotation.
  6. Insert the pad retaining pins and secure them with the spring clips.
  7. Pump brake pedal several times until solid reistance is felt and check brake fluid level in reservoir.
  8. Replace the front wheels and remove the jack.

Rear Brakes - Adjusting

Each rear brake is provided with an adjuster which is accessible when the rear road wheel is removed. To adjust the shoes, turn the adjuster clockwise until the shoes are hard against the drum, then slacken the adjuster by one notch increments until the drum is free to rotate. 
Rear Brake Adjustment

Handbrake Adjustment

Adjustment of the rear brake shoes, re-adjust the handbrake mechanism. If cable slacknes remains, re-adjust the handbrake cables. Do not overtighten cables.
Handbrake Adjustment Mechanism


emailwebmaster@ukmotorsport.com