Blue Bird TC/2000, Руководство пользователя

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inhibitors within the valve body prevent those harmful shifts when the vehicle is going too fast for the next
lower gear.
If the downshifts are attempted at excessive speeds, the inhibitors prevent the selected downshift until
the vehicle reaches an acceptable speed.
DOWNSHIFT OR REVERSE INHIBITOR FEATURE With/MD3060
Although there is no limitation on upshifting, there is on downshifting and shifts from Neutral into Drive
or Reverse. If a downshift or Neutral-to-Range shift is selected when the engine speed or throttle position is
to high, the ECU will prevent the shift from occurring until a lower speed is reached. If idle speed is to high,
shifts to range are inhibited. A continuous "beep" tone is emitted if reverse is selected during forward move-
ment or a neutral-to-range shift is selected at too high an engine speed.
COLD WEATHER STARTS MD 3060
Most World transmissions are programmed to restrict full operation until specific temperatures are reached.
Refer to the following chart for temperature restrictions.
Sump Oil
Temperature
DO NOT
SHIFT light
Operation
-32 deg.C (-25 deg.F)
and below
-31 deg.C (-24 deg.F)
to -7 deg.C (+20 deg.F)
-7 deg.C (20 deg.F)
and above
ON
OFF
OFF
Neutral only
Neutral, First,
Second, or Reverse
Full operation
in all gears
USING THE ENGINE TO SLOW THE VEHICLE
AT 545 & MT 643
To use the engine as a braking force, shift the range selector to the next lower range. If the vehicle is
exceeding the maximum speed for a lower gear, use the service brakes to slow the vehicle to an acceptable
speed where the transmission may be downshifted safely.
An automatic, compared to a manual, shift transmission has a longer “coast down” time. Until you are
accustomed to this characteristic, you may need to manually downshift to reduce speed.
With a little experience in driving the automatic, you will learn to decelerate a bit sooner, or brake until
automatic downshifts occur. This will reduce the need for manual downshifting.
MD 3060
To use the engine as a braking force, select the next lower gear. If the vehicle is exceeding the maximum
speed for this gear, use the service brakes to slow the vehicle. When a lower speed is reached, the ECU will
downshift automatically the transmission. Engine braking provides good speed control for going down
grades. When the vehicle is heavily loaded, or the grade is steep, it may be desirable to preselect a lower gear
prior to the grade. If engine speed is exceeded, the transmission will upshift automatically to prevent dam-
age to the engine.
TRANSMISSION OIL TEMPERATURE
The transmission oil temperature is indicated in some vehicles by a gauge specifically designed for this
purpose and in some vehicles by the engine coolant temperature indicator. Extended operations at low ve-
hicle speeds with the engine at full throttle can cause excessively high oil temperatures in the transmission.
These temperatures may tend to overheat the engine cooling system as well as cause possible transmission
damage.
If excessive temperature is indicated by the engine coolant temperature gauge. Stop the vehicle and
check the cooling system. If the cooling system appears to be functioning properly, shift to neutral and accel-