Ford F series Owner's Manual page 146

Rear Disc Brakes (F-Super Duty and
F-Series Stripped Chassis Only)
The rear disc brakes are self-adjusting. They do
not require service other than periodic
lubrication of the caliper slide rails and
inspection for pad wear.
Hydraulic Power Brakes
The hydraulic brake system is made up of two
independent hydraulic circuits. One hydraulic
circuit supplies fluid to the front disc brakes and
the other hydraulic circuit supplies fluid to the
rear drum brakes. These two circuits are
supplied by a common hydraulic brake fluid
reservoir, with a fluid level sensor.
The brake light in the instrument cluster will
light for low brake fluid in the common brake
fluid reservoir.
An increase in pedal travel will result in
reduced braking capability. The brake
system should be checked immediately.
Rear Anti-lock Brakes
Except for F-Super Duty and F-Series
Commercial and Motorhome Stripped Chassis,
F-Series Light Trucks are equipped with a Rear
Antilock Brake System. This system prevents at
least one and often both rear wheels from
locking up when the brakes are applied in a
panic stop, for example.
Even with the Anti-lock Brake System, you
should be careful when braking. Front brake
lock up on any surface, even on smooth
pavement causes loss of steering control. Heavy
braking on roads with loose surfaces such as
146
RWARNING