The PACCAR TX-18 was built from the ground up to be matched with MX-11 and MX-13 engines while providing capability for demanding applications such as heavy haul. The TX-18 Pro adds enhanced capability and unique features for extreme duty vocational applications and select off-highway applications.
The new 18-speed ratio provides smooth shifting and consistent performance in a wide range of operating applications. The TX-18 has three reverse gears, and TX-18 Pro has six, which pairs well with deep axle ratios. Multiple reverse gears allow for improved maneuverability around job sites.
Both transmissions offer expanded high-capacity PTO functionality with an 8-bolt bottom mount and 4-bolt rear mount for a combined 160-hp capacity at 1,400 RPM.
The PACCAR TX-18 transmission features a high-pressure diecast aluminum casing, one-piece serviceable input shaft, helical gearing, precision lubrication system, extreme duty clutch and an integrated clutch housing. It can be configured with an optional transmission cooler to help keep it operating efficiently in the most demanding of workloads. The transmission features 4 application-specific calibrations and comes standard with two PTO openings capable of a combined 160 hp.
An automotive-style, stalk-mounted shifter with Drive, Neutral, Reverse and Manual modes ensure the operation of the TX-18 is simple and intuitive.
“Drivers will appreciate the versatility of the PACCAR TX-18 and PACCAR TX-18 Pro that deliver excellent low-speed maneuverability. Both seasoned and new drivers will benefit from tailored configurations that help them get the job done, and new performance calibrations that expertly control transmission shift points,” says Jim Walenczak, Kenworth assistant general manager for sales and marketing.
“The integration of the new TX-18 and TX-18 Pro with PACCAR’s line of MX engines further enhances Peterbilt’s ability to provide our customers the lowest cost of ownership, best-performing trucks in the industry. The gains in productivity, efficiency, uptime and the ease of use for drivers make these transmissions a must-have,” says Jacob Montero, Peterbilt general sales manager.
The transmissions are available on Peterbilt Models 567, 389 and 579 equipped with PACCAR MX engines and Kenworth T680, T880 and W990 equipped with the PACCAR MX-13 and PACCAR MX-11 engines.