Braking system

The braking system is of the dual circuit hydraulic type with disc brakes at the front and drum brakes at the rear. A diagonally split dual circuit hydraulic system is employed in which each circuit operates one front and one diagonally opposite rear brake from a tandem master cylinder. Under normal conditions both circuits operate in unison; however, in the event of hydraulic failure in one circuit, full braking force will still be available at two wheels. A pressure regulating valve on Saloon and Estate models, and a light laden valve on Van models is incorporated in the rear brake hydraulic circuit. The valve regulates the pressure applied to each rear brake and reduces the possibility of the rear wheels locking under heavy braking.

See also:

Deceleratio sensitive valve (all models with conventional braking system) - removal and refitting
Caution: Refer to the precautions in Section 1. Removal 1 The deceleration sensitive valve is located on the left-hand side of the engine compartment (see illustrations). 23.1a Early type decele ...

Engine/automatic transmission assembly - removal and separation
Note: Refer to the warning in Section 8 before proceeding. A suitable hoist and lifting tackle will be required for this operation. Any suspected faults in the automatic transmission should be ref ...

Oil filler cap cleaning - OHVand HCS engines (Every 6000 miles or 6 months)
1 Simply pull the oil filler cap from the rocker cover and, where applicable, disconnect the hose(s) from the cap. 2 Inspect the filler cap, and if necessary clean the cap using clean petrol to re ...