Crown C48-2+2 Owner's Manual And Service Manual page 25

OPERATION AND SERVICE INFORMATION
NOTE
Over time, a subtle loss of performance may take place , therefore, it is important to establish the
standard with a new vehicle.
The Periodic Brake Performance Test should be performed regularly ( Ref. Fig. 16 ) as an evaluation of
braking system performance. It is useful as a method of identifying subtle loss of performance over time.
Periodic Brake Test for Mechanical Brake
The purpose of this test is to compare the braking performance of vehicle to the braking performance of new
or "known to be good" vehicle or to an established acceptable stopping distance. Actual stopping distances
will be influenced by weather conditions, terrain, rod surface condition, actual vehicle weight (accessories
installed) and vehicle speed. The test is conducted by latching the parking brake to eliminate different pedal
pressures and to include the affects of linkage misadjustment.
Establish the acceptable stopping distance by testing a new or "know to be good" vehicle and recording the
stopping location or stopping distance. For fleets of vehicles, several vehicles should be tested when new and
the range of stopping locations or distances recorded.
NOTE
Over time, a subtle loss of performance may take place; therefore, it is important to establish the
standard with a new vehicle.
Drive the vehicle at maximum speed on a flat, dry, clean paved surface ( Ref. Fig 10).Quickly depress the
brake pedal to latch the parking brake at the line or
22
Owner's Manual and Service Guide