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 (from the USA). The cab came in a 50 inch (1371.6 mm) day cab (no sleeper). Sleeper models included a 72 inch (1828.8 mm), 80 inch (2032 mm) and later a "bustle back" was added that lengthened the sleeper to 86 inches (2184.4 mm).

Mack F series
Overview
ManufacturerMack Trucks
Production1962–1981
Body and chassis
ClassTruck
Body styleCab over engine
Powertrain
TransmissionMack (manual)
Chronology
PredecessorMack H series
SuccessorMack Cruise-Liner (Created 1975)

Model range

  • F6xx
  • F7xx
  • F8xx
  • F9xx

Engines[1]

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.

  • Cat3406 is a big-bore diesel available in both high-torque-rise and conventional torque-rise versions
  • Detroit Diesel 71 series, provided power with a high torque curve.
  • Cummins Formula 350 “Big Cam” engine is governed at 1900RPM and provides 1065 ft-lbs of torque at 1300RPM. The formula 290 is also governed at 1900RPM and provides 930 ft-lbs of torque. The NTC series of engines was also available.

The table shows the Mack diesel engines available in the series.[2][3]

Chassis ModelEngineDisplacementNo. Of Cyl.HorsepowerTorque
F712TETAZ 673A672 cu in (11.0 L)6315 hp (235 kW)@19001,050 lbf⋅ft (1,424 N⋅m)@1450
F747TNTC 290855 cu in (14.0 L)6290 hp (216 kW)@2100930 lbf⋅ft (1,261 N⋅m)@1300
NTC 290855 cu in (14.0 L)6270 hp (201 kW)@2100930 lbf⋅ft (1,261 N⋅m)@1300
FORMAUL 290855 cu in (14.0 L)6290 hp (216 kW)@1900930 lbf⋅ft (1,261 N⋅m)@1300
FORMAUL 290855 cu in (14.0 L)6270 hp (201 kW)@1900930 lbf⋅ft (1,261 N⋅m)@1300
F785TMAXIDYNE 675672 cu in (11.0 L)6237 hp (177 kW)@1700906 lbf⋅ft (1,228 N⋅m)@1000
F786TMAXIDYNE 676675 cu in (11.1 L)6285 hp (213 kW)@18001,080 lbf⋅ft (1,464 N⋅m)@1000
F795TMAXIDYNE 865866 cu in (14.2 L)8322 hp (240 kW)@21001,100 lbf⋅ft (1,491 N⋅m)@1350
MAXIDYNE 865C866 cu in (14.2 L)8317 hp (236 kW)@21001,211 lbf⋅ft (1,642 N⋅m)@1350

Chassis[4]

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.

  • Front axles rated to 18,000 lb (8,200 kg). Constructed from drop-forged I-beam construction.
  • Power steering is available.
  • Rear axles rated to 23,000 lb (10,000 kg)
  • Maximum GCWR 75,000 lb (34,000 kg)

Chassis Equipment[5]

  • 50 Gallon Fuel Tank
  • Automatic reset circuit breakers
  • Back-up Light
  • Break-away safety valve
  • Cab roof vent
  • Combination heater and defroster, 42000 BTU
  • Combination stop, tail, and rear turn signals(2)
  • Engine water conditioner (cummins engine)
  • Engine stop control
  • Horn, electric, single tone
  • I.D. & clearance lamps
  • Low air pressure buzzer
  • Two rear view mirror
  • Undercoating
  • Vertical exhaust

See also

References

  1. http://www.macktrucks.com/powertrain-and-suspensions/
  2. Mack, Trucks, ed. (1970). Owners Manual (1 ed.). Mack.
  3. Forier, Louis C., ed. (1973). Motor’s Truck & Diesel Repair Manual (26 ed.). Motor. pp. 1003–1004, 1107–1109, 1250. ISBN 0-910992-16-9.
  4. Mack, Trucks, ed. (1970). Owners Manual (1 ed.). Mack
  5. Mack, Trucks, ed. (1970). Owners Manual (1 ed.). Mack
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