Triumph TR6 PI Operation Manual page 485

ELECTRICAL
BRAKE LINE FAILURE AND OIL PRESSURE
WARNING SYSTEM
- Description
Left hand steer vehicles only.
86.59.00
The brake line failure indication system consists of a
warning light mounted on the fascia panel and a switch
which is a component part of the pressure differential
warning actuator incorporated in the brake system.
The oil pressure indication system consists of a
warning light housed in the tachometer and a switch fitted
to the cylinder block. The switch is in communication with
the main oil gallery.
The brake line failure indication circuit is
amalgamated with the oil pressure indication circuit so that
when the ignition circuits are energised both warning lights
will illuminate faintly to indicate no bulb filament failure.
When the engine Is started the oil pressure will rise
causing the oil pressure switch diaphragm to be actuated
outwards. The contact plate is isolated from earth. Both
warning lights will extinguish.
Should pressure loss occur in either front or rear
brake lines the brake line failure switch will actuate. The
'BRAKE' warning light will illuminate brightly.
Should the oil pressure fall below the saft operating
pressure while the engine is running the oil pressure switch
will actuate. Both the 'OIL' and the 'BRAKE' warning
lights will illuminate faintly.
BRAKE AND OIL WARNING LIGHT SUMMARY
'BRAKE' 'OIL'
Condition warning
warning
light light
Ignition on - Engine not running
ON FAINT ON FAINT
Engine running OFF OFF
Engine running - Brake line pressure low ON BRIGHT OFF
Engine running - Oil pressure low
ON FAINT ON FAINT
86.59.00 Sheet I
Triumph TR6 Manual. Part No.
S4S217
lasue I