ADELMAN’S
2000 Waynesburg Dr. SE
Canton, Ohio 44707
Phone: 1-800-643-2001
Phone: 330-456-0206
Fax: 330.456-3959
Phone: 1-773-734-0570
| Stock Number | cat7155-trans |
| Design | It is a 16-speed unit specifically built to handle heavy equipment and light-to-heavy transport duties in 400 HP Cummins-powered trucks. |
| Air Shift Mechanism | Unlike traditional automatics, the Cat 7155 operates using an air-shifted control valve pack mounted on top of the transmission. It requires a clean, dry air supply to shift properly. |
| Clutch Design | The transmission utilizes two clutch packs (one front, one rear) that disengage, shift gears using the air valve, and lock back up almost instantly. |
| Military Classification | It is often identified under Military Part Number MA317-21020 and National Stock Number (NSN) 2520-01-082-8143. |
The Caterpillar 7155 is a 16-speed hydraulic automatic (or power-shift) transmission. It is most notable for being the standard heavy-duty transmission used in the U.S. military’s M-915 through M-920 series of tactical tractor trucks (including the M-916 and M-920).