Mack F series


The Mack F series was the third generation of cabover trucks from Mack Trucks. Its production began in 1962 and ended in 1981. It was produced primarily as a set-forward axle truck but a setback axle version was shipped overseas. The cab came in a 50 inch day cab. Sleeper models included a 72 inch, 80 inch and later a "bustle back" was added that lengthened the sleeper to 86 inches.

Model range

The F Model offered 5 different diesel engines, Mack's Maxidyne and Thermodyne at 260-375 hp, Cummins - 250-350 hp, Detroit Diesel - 270-430 hp and Caterpillar - 325 hp.
The table shows the Mack diesel engines available in the series.
Chassis ModelEngineDisplacementNo. Of Cyl.HorsepowerTorque
F712TETAZ 673A6@1900@1450
F747TNTC 2906@2100@1300
NTC 2906@2100@1300-
FORMAUL 2906@1900@1300-
FORMAUL 2906@1900@1300-
F785TMAXIDYNE 6756@1700@1000
F786TMAXIDYNE 6766@1800@1000
F795TMAXIDYNE 8658@2100@1350
MAXIDYNE 865C8@2100@1350-

ChassisMack, Trucks, ed. (1970). Owners Manual (1 ed.). Mack

The Mack F series truck uses taper-leaf front springs, which helps to provide a smoother ride. Taper-lead springs practically eliminate the inter-leaf friction, which is common with multi-leaf spring systems. The taper concept uses springs of equal length and different contour, to assure the springs do not slide against one another while in normal operation. This arrangement, accompanied by forged aluminum rear brackets and shackles equate to a comfortable ride.