Mack R series
| Mack R Model | |
|---|---|
| Overview | |
| Manufacturer | Mack Trucks |
| Model years | 1966–2005 |
| Assembly | Allentown, Pennsylvania Hayward, California Iran, Tehran Saipa Diesel (Was known as Iran Kaveh) |
| Body and chassis | |
| Class | Class 8 truck |
| Body style | Truck (bonneted cab) |
| Layout | 4x2, 4x4, 6x4, 6x6, 8x6 |
| Related | Mack U Series Mack DM Series Mack Super-Liner |
| Powertrain | |
| Engine | Turbocharged diesel 200–440 hp (150–330 kW) |
| Transmission | Mack / Fuller (manual) Allison (automatic) |
| Chronology | |
| Predecessor | Mack B Model |
| Successor | Mack Granite |
The Mack R series (also known as the Mack Model R) is a series of trucks that was manufactured by Mack Trucks from 1966 to 2005. The successor of the Mack B series, the R was a heavy-duty truck (Class 8) with a conventional (bonneted) cab configuration. With the exception of the Kenworth W900, the Mack R is the longest-produced commercial truck in history.
As with its predecessor, the R was offered in a wide variety of configurations for a comprehensive array of vocational and transportation applications. In addition, multiple Mack truck lines have shared components with the R, including the SuperLiner and CH/CL conventionals and the F, WR, and MH cabover trucks. Though not the first truck to adopt a forward-tilting hood, the Mack R introduced several innovations, including an air-ride cab, an integral engine compression brake, and a drivetrain that reduced the need for an auxiliary transmission.
The R was produced by Mack in Allentown, Pennsylvania (Lower Macungie Township, Pennsylvania after 1975); several versions (including the SuperLiner) were produced in Hayward, California until Mack closed its assembly facility there in 1980. The series was also produced locally by Mack Australia and in Iran (the latter, license-built, prior to 1979). During the 1990s, Mack began to phase out highway variants of the R in favor of the updated CH/CL, with severe-duty/construction variants lasting through 2005, with the Mack Granite series for those applications.