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MAINTENANCE
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Periodic Brake Test
The REFRESHER unit must be empty, all drawers
and doors secured, and passenger side countertop
removed prior to performing the periodic brake test.
This test compares the brake performance of the vehicle to the
brake performance of new or 'known to be good' vehicles or to an
established acceptable stopping distance. Actual stopping dis-
tances are influenced by weather conditions, terrain, road surface
condition, actual vehicle weight (accessories installed) and vehi-
cle speed. No specific braking distance can be reliably specified.
The test is conducted by latching the park brake to eliminate dif-
ferent pedal pressures and to include the affects of linkage mis-
adjustment.
Establish the acceptable stopping distance by testing a new or
'known to be good' vehicle and recording the stopping location or
stopping distance. Several vehicles should be tested when new
and the range of stopping locations or distances recorded.
Over time, a subtle loss of performance may occur; 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.
Quickly press the brake pedal to lock the parking brake at the line or marker in the test area and remove foot from pedal.
The vehicle must stop fast. The wheel brakes may or may not lock.
Observe the vehicle stopping location or measure the vehicle stopping distance from the point at which the brakes were
locked. The vehicle must stop within the 'normal' range of stopping distances. If the vehicle stops more than 4 ft. (1.2 m)
beyond the acceptable stopping distance or pulls to one side, the vehicle has failed the test and must be tested again.
If the vehicle fails the second test, it must immediately be removed from service. The vehicle must be inspected by a
qualified mechanic who should refer to the TROUBLESHOOTING section in the Technician's Repair and Service Man-
ual.
LUBRICATION
Do not use more than three pumps of grease in a
grease fitting at any one time. Excess grease can
cause grease seals to fail, or grease spreading
into areas that could damage components.
Putting more than three pumps of grease in a grease
fitting could damage grease seals and cause prema-
ture bearing failure.
56
Dry, Level, Clean, Paved Surface
Accelerate to
maximum speed.
Latch park
brake and take
foot off pedal.
Acceptable
4 ft. (1.2 m)
Stopping
Distance
King Pin
Rack
Ball
Joint
View from Underside of Vehicle
Owner's Guide
Line or Marker
Line or Marker
Normal Range of
Stopping Distance
If the vehcile requires
more than 4 ft. (1.2 m)
more than the acceptable
stopping distance or
pulls to one side, remvoe
it from service and have
it inspected by a
qualified mechanic.
Lubrication Points
King Pin
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