General Engine Specifications—6.8 L Engines

ITEM

UNIT OF MEASURE

6068SFM50

6068SFM75

6068TFM75

6068TFM76

6068AFM75

Number of Cylinders

6

6

6

6

6

Fuel

Diesel

Diesel

Diesel

Diesel

Diesel

Bore

mm (in.)

106.5 (4.19)

106.5 (4.19)

106.5 (4.19)

106.5 (4.19)

106.5 (4.19)

Stroke

mm (in.)

127 (5.00)

127 (5.00)

127 (5.00)

127 (5.00)

127 (5.00)

Displacement

L (cu in.)

6.8 (414)

6.8 (414)

6.8 (414)

6.8 (414)

6.8 (414)

Compression Ratio

17.0:1

17.0:1

17.0:1

17.0:1

16.7 : 1

Rated Speed:

Std. Governor

3—5% Governor

RPM

RPM

2400—2600

2400—2800

2400—2600

1500 or 1800

2300—2600

Fast Idle Speed

RPM

2720

2920

2720

1575 or 1890

2720

Slow Idle Speed:

Propulsion Engines

Gen-Set Engines

RPM

RPM

650

600

650

1150

600

Oil Pressure at Rated Speed

kPa (psi)

385 (56)

415 (60)

350 (51)

345 (50)

345 (50)

Oil Pressure at Slow Idle Speed

kPa (psi)

105 (15)

105 (15)

(100 (15) Minimum)

100 (15)

105 (15)

138 (20)

Flywheel and Housing

SAE No.

2,3

2,3

2,3

2,3

2,3

Injection Nozzles

mm

9.5

9.5

9.5

9.5

9.5

Coolant Temperature (Normal Range)

°C (°F)

80-94 (176-201)

82-94 (180-202)

82-95 (180-203)

82-95 (180-203)

82-94 (180-202)

Coolant Temperature (Maximum) 1

°C (°F)

108 (226)

110 (230)

108 (226)

108 (226)

100 (212)

Coolant Capacity (Including Heat Exchanger)

L (qt)

28 L (30 qt)

38 L (40.2 qt)

28 L (30 qt)

28 L (30 qt)

19 L (20 qt)

Physical Dimensions:

Width

Height

Length

Basic Dry Weight

mm (in.)

mm (in.)

mm (in.)

mm (in.)

kg (lb)

721 (28.4)

946 (37.3)

1183 (46.6)

636 (1399)

776 (1711)

1122 (44.2)

959 (37.7)

1380 (54.3)

700 (1543)

890 (1962)

703(27.7)

882 (34.7)

1141 (44.9)

590 (1298)

730 (1609)

703(27.7)

882 (34.7)

1141 (44.9)

590 (1298)

730 (1609)

703(27.7)

860 (33.9)

937 (36.9)

1021 (40.2)

812 (1790)

1 Engine begins to derate power at this temperature.

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