en-54
MAINTENANCE
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Owner’s Guide
Establish the acceptable stopping distance by testing a new or ‘known 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 stop-
ping locations or distances recorded.
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. Quickly depress the brake pedal to latch the
parking brake at the line or marker in the test area and
remove foot from pedal. The vehicle should stop aggres-
sively. 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 latched.
The vehicle should stop within the ‘normal’ range of stop-
ping 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 should be tested
again.
If the vehicle fails the second test, it should immediately be
removed from service. The vehicle must be inspected by a
qualified mechanic who should refer to the TROUBLE-
SHOOTING section in the Technician’s Repair and Service
Manual.
LUBRICATION
Do not use more than three pumps of grease in
any grease fitting at any one time. Excess grease
may cause grease seals to fail or grease migration
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.
Latch
parking brake
and take foot
off pedal
Line or Marker
Acceptable
Stopping
Distance
A vehicle requiring
more than 4 ft. (1.2 m)
beyond the ‘acceptable
stopping distance’, or
pulls to one side, must
be removed from service
and inspected by a
qualified mechanic
Accelerate to
maximum speed
4 ft. (1.2 m)
Line or Marker
Dry, Level, Clean, Paved Surface
Lubrication Points
King Pin
King Pin
View from Underside of Vehicle
Rack
Ball
Joint
