Navistar WorkStar Series, Operator'S Manual

Page: 134 / 258

Operation
• Depress the clutch pedal immediately and shift into the
desired gear.
• Release the clutch pedal to engage the clutch.
Clutch Precautions
Maintain specified clutch adjustment. Regularly inspect clutch
control linkage for tightness.
When adjustment of the clutch is necessary, it is extremely
important that the work be properly performed; otherwise, early
failure of the clutch will result and a costly clutch overhaul
becomes necessary.
To avoid needless delay and expense, allow only competent and
experienced mechanics to perform these operations.
Shifting with Synchronized Transmission
With the clutch released (pedal depressed), use second speed
gear synchronizer to stop clutch disc rotation. This will allow
smooth engagement of first or reverse gear selection. In order
to complete gear engagement, it may be necessary to apply
light pressure to the shift lever during initial engagement of
the clutch. It takes one to two seconds to match gear speeds.
Steady pressure on shift lever will help the synchronizer perform
its job quicker. If the shift lever is forced into gear it is possible to
override a blocker and defeat the purpose of the synchronizer,
causing gear clash.
Shifting with Nonsynchronized Transmission
Refer to Clutch Brake (vehicles with nonsynchronized
transmission) and Double Clutch Procedures in this section
(above).
Operation of the Eaton AutoShift® Transmission and Shifter
WARNING
To prevent unexpected vehicle movement, hold
the brake pedal down while you move the
gearshift from position to position. Hold down
both brake and clutch pedal while pushing the
“R” or “D” button. If you do not hold the brake
pedal down, your vehicle may move unexpectedly
and cause property damage, personal injury, or
death.
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