The Volvo I-Shift is an automated manual transmission developed by Volvo subsidiary Volvo Powertrain AB for Volvo Trucks and Volvo Buses, with 12 forward gears and 4 reverse gears. It became available for trucks in 2001 and later buses in 2004.
4000-07-04-01 Transmission replacement. Also when it is installed 4320-07-03-01 Transmission, Clutch, Engagement. If you look up the manuals under function group 431 you will find manual 431-03-02-03, Transmission TEU replacement manual. Also 431-02-01-01 Transmission Install. For identification). Lifting the transmission from the control housing will cause the rails to slip out of position causing additional down time! Lift the Transmission using only lift points on Transmission Main Box using the approved Volvo Part# - 9990031 & 9996905 lifting device. Transmission consists of three (3) main components TECU Top Cover. I think the problem lies with Volvo & the manufacturer of the I shift. If they cannot design a transmission that can be moved out of the roadway for safety when a unit goes down, or cannot even be pulled 50ft. Out from under a trailer for a rear hook up, then they should be held responsible for their design. At the right time is what transmission technology is all about. And it’s what makes Volvo I-Shift the most advanced — and most fuel efficient — automated manual transmission on the road today.
Design[edit]
Technically the I-Shift is an unsynchronised manual gearbox, with an electronic control unit, responsible for operating the pneumatic system that handles the clutch and shifts. It constantly receives information about vehicle speed, acceleration, weight, road grade, torque demand and more, and can adjust revs and engine brake effect. The I-Shift uses different software for different type of application.
The I-Shift has no clutch pedal. It is controlled either by a gearstick mounted on the driver's seat or by buttons on the dashboard, just like a standard automatic gearbox. With the gearstick, the driver can use buttons to manually select gear, although this feature is disabled on some vehicles (where the gearstick has no buttons).
The different versions of the I-Shift are named AT (Automatic Transmission) or ATO, where the O stands for overdrive. The standard versions have a gear ratio of 1:1, while the overdrive has a ratio of 0.78:1, suitable for long distance use. The numbers show maximum torque in Newton metres, plus 12 for the number of gears.[1] The last part of the name is a letter showing its generation, with C for Euro III and IV, D for Euro V and EEV, and E and F for the Euro VI version.
- Known versions
- AT2412C, AT2512C, AT2812C, ATO2512C, ATO3112C[1]
- AT2412D, AT2612D, AT2812D, ATO2612D, ATO3112D, ATO3512D[2]
- AT2412E, AT2612E, AT2812E, ATO2612E, ATO3112E, ATO3512E[3]
I-Shift Dual Clutch[edit]
In June 2014,[4] Volvo Trucks presented a new dual-clutch version of the I-Shift, known as SPO2812, with overdrive and a maximum torque of 2800 N·m.[5] The dual-clutch version is only available for trucks up to 540 hp.
The I-Shift Dual Clutch has two input shafts which are alternatively connected to the engine through two clutches. When driving, the first gear is engaged by one input shaft while the other one pre-selects the next gear. At the actual gear change, the previously engaged clutch is disengaged as the idling clutch is engaged at the same time. This results in a Powershift and seamless transfer of power.
I-shift Transmission Images
I-Shift with Crawler Gears[edit]
In 2016, Volvo launched a new member of the I-Shift family, the I-Shift with Crawler Gears. The new gears, which are added to the automated transmission, provides exceptional startability for trucks carrying heavy loads and can start from standstill for up to 325 tonnes of GVW.
The I-Shift with Crawler Gears adds 1 or 2 Crawler Gears as optional, the first one has a low crawler gear with a 19.38 to 1 ratio and the second one has an ultra low crawler gear with a 32.04 to 1 ratio, they also enable to drive as slowly as 0.5 km/h.
I-shift Transmission Fluid
References[edit]
- ^ abLennartsson, Richard (30 May 2010). 'Automatic diagnostic system for I-shift transmission using vibration analysis'(PDF). Retrieved 30 July 2015.
- ^'I-Shift'. Volvo Trucks Great Britain & Ireland. Archived from the original on 18 September 2012. Retrieved 30 July 2015.
- ^'I-Shift'. Volvo Trucks Great Britain & Ireland. Retrieved 30 July 2015.
- ^'Volvo Trucks launches a unique gearbox for heavy vehicles'. Volvo Trucks. 17 June 2014. Retrieved 30 July 2015.
- ^'SP2812 - Fact Sheet'(PDF). Volvo Trucks. 16 June 2014. Retrieved 30 July 2015.
I Shift Transmission Oil
I Shift Transmissions