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DOWNLOAD VOLVOUU I-Shift service manual PDF

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VOLVOUU I-Shift service manual PDF

VOLVOUU Transmission, Design and Function Service Manual – PDF DOWNLOAD

Transmission, Mechanical :
General:
All variants of the VOLVOUU I-Shift have 12 forward speeds and up to 4 reverse speeds depending on programming. It is a single countershaft transmission built up with a splitter section, a main section with three forward and one reverse gear, and a range gear section. It is an automated mechanical transmission and uses synchronizers in its splitter and range gears but not in the main section.
The main section utilizes a countershaft brake to mesh gears and equalize shaft speeds as needed. A single disc automated clutch system is utilized in place of a torque converter. The I-Shift is a “two pedal” transmission and does not require a clutch pedal. The I-Shift uses compressed air and electrical solenoids to perform shift functions, clutch control and countershaft brake functions.
All of these functions are timed and controlled by the transmission control module (TCM). A dedicated air tank is needed on the vehicle to supply air for these components. The air is plumbed to the transmission via a supply line and is distributed to the other components internally. The air control solenoids are housed in the transmission control housing and in the clutch control valve assembly. All VOLVOUU Truck models will be available with this transmission including the VT, VN Series & VHD vocational trucks. Multiple I-Shift models will be offered to support the power ranges of the engines as well as offering different gear arrangements.

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