Sinotruk Howo Truck Transmission Type - Heavy Truck Parts Store
common rail system
Causes of low pressure in the common rail system
Sinotruk Howo truck
Sinotruk Howo Truck Gear Shift Operation

AMT Transmission

Shifting process is controled by TCU automatically(also driver send out shifting request), it can decrease fatigue strength and increase driving comfortable obviously.

In any processes of shifting, the indication sign of gear position on the instrument panel will flash.

The following information will display on the instrument:
Current operating position of gearbox.

If ▲ flashes in the process of shifting, it means Gear-Up;
If ▼ flashes, it means Gear-Down.
AMT operation state (Auto/Manual operating mode; Dynamic/Economical Mode; Climbing)

The HW20716A-series gearboxes provide two operation:
▼Auto-mode, the control is automatically completed by the control system.
▼Manual-mode,directly under the driver‘s Control.

Auto-mode (A-mode):

The Auto-mode is the operation mode defaulted by the control system. In the auto-mode, the driver selects the startup gear only by the shift lever.

The startup gear position includes the forward gear, reverse gear or neutral gear.

In the process of driving, the gearbox control system will automatically select the most suitable gear position depending on the current situation.

The driver may also interfere with the shifting operation by the handle in the Auto-mode .

Manual-mode (M-mode):

In manual-mode, any of shifting actions has to be delivered by the driver, who decides the shifting moment and gear selection.

But the clutch will complete the relevant actions under the system control, i.e. during the startup, shifting and stop, the clutch coupling and disengagement are performed automatically.

A/M Function selecting

The driver is able to achieve the auto/manual-mode shifting through the handle button. The
screen on the instrument panel will display in realtime, the current operation mode of gearbox.

The operation mode defaulted by the system is the auto-mode.
The driver may switch over the gearbox operating mode anytime during the course of startup and drive.

  • In the auto-mode, the operation method of manual mode shifting is given as below:
    Press the button on the shift lever. When the operation mode displayed on screen is M, it
    indicates a successful shifting.
  • In the manual -mode, the operation method of automode shifting is given as below:
    Press the button on the shift lever. When the operation mode displayed on screen is A, it indicate a successful shifting.
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