Chevrolet Light Duty Truck 1973, Service Manual

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5 -5 0 BRAKES
the vehicle to a complete stop each time. Do not repeat
stops within two miles of each other to avoid high brake
temperatures. Observe the effort required to make each
stop. Is it too light (grabby), satisfactory or too hard?
Check for pulls. Unequal brakes will cause pulls in the
direction of the brake doing the most work. Check for
noise to determine the type and the wheel from which it
is coming.
High Speed Test for Fade
NOTE: Fade is a temporary reduction of
brake effectiveness resulting from heat.
Make three hard stops (just short of skid) from 60 MPH
at 1/2 mile increments or just as fast as possible. Check
for pulls and observe the effort required to make the
stops. These should be made without strenuous effort.
Check pedal reserve after each stop.
High Speed Test for Delayed Fade
After making previous fade test, let the vehicle stand for 10
minutes. Then, accelerate quickly to 60 MPH and make one
hard stop, just short of a skid. Check for pulls and observe the
effort required to make the stop. Check pedal reserve.
LIGHT DUTY TRUCK SERVICE MANUAL