Peterbilt recently introduced its Off-Road Calibration and Rock-Free Mode for the PACCAR TX-18 Pro transmission available in Peterbilt Models 579, 567, 589, 389, 367 and 365.
According to the company, the PACCAR TX-18 Pro is paired exclusively with the PACCAR MX-11 and MX-13 engines and the transmission is designed to perform in a variety of vocational applications including heavy haul, dump truck, wreckers and cranes. The combination of the TX-18 Pro transmission and a PACCAR MX engine provides up to 1,850 lb./ft of torque and is rated up to 140,000 lbs. GCWR.
The PACCAR TX-18 Pro transmission features a new secondary mode which comes from the factory with the newly released Off-Road Calibration. The recent press release claims that the system is designed to learn the road terrain, surface conditions and respond automatically, and according to Peterbilt it minimizes unnecessary shifting and maximizes time in gear in challenging terrain.
Rock-Free Mode is now standard on the PACCAR TX-18 Pro transmission for situations where off-road conditions impact maneuverability the Rock-Free Mode. Once engaged, the transmission is designed to quickly shift between drive and reverse to rock free, fully enabling the truck and then automatically returning to its default setting, the company adds.
