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| Illustration 1 | g00315048 |
Reverse speed, first speed forward and second speed forward are always in torque converter drive. These speeds must be manually selected.
The automatic range for third speed through eighth speed is always in direct drive. For each job condition, the transmission will automatically upshift and the transmission will automatically downshift between second speed and the highest speed that is being used. Move the transmission control (1) in one smooth motion. During load cycles, haul cycles and dump cycles, manual shifting is not recommended.
Use the transmission hold control (2) to prevent unwanted shifts.
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The machine must be stopped and the engine at low idle before changing direction. After moving the transmission control, do not accelerate until after hearing or feeling the transmission clutches engage. |
As the engine is accelerated and the ground speed increases, the transmission will upshift.
As the ground speed continues to increase, the transmission will upshift one speed at a time. The transmission will upshift automatically between second speed and the highest speed that has been selected. The transmission will stop upshifting at the transmission speed that has been selected.
Moving the transmission control lever does not ensure immediate shifting of the transmission. The shifting of the transmission is governed by the machine ground speed.
Use the transmission hold control in order to prevent unwanted upshifts when the machine is approaching an upgrade.
Use the transmission hold control in order to prevent unwanted upshifts when the machine is loading material and dumping material on rough terrain.
If the ground speed is reduced or the engine speed is reduced by an increased load the transmission will automatically downshift in order to select the correct transmission speed.
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The transmission is equipped with a downshift inhibitor. The transmission will not necessarily downshift when the transmission control is moved. This protects against engine overspeed. Do not downshift with the transmission hold control applied. The ground speed could decrease suddenly, or the engine could overspeed, when the transmission hold control is released. |
Accidental downshifting of the transmission control does not mean immediate shifting of the transmission.
If the machine continues to slow, or if the machine is brought to a stop, the transmission will automatically downshift one speed at a time. The transmission always returns to second speed. Move the transmission control to the NEUTRAL position if the machine is stopped.