C27 ACERT®

Petroleum

Engine

Dry Manifold

CAT® ENGINE SPECIFICATIONS

V-12, 4-Stroke-Cycle-Diesel

Emissions.. . . . . . . . . . . . 2006 EPA and CARB Tier 2, and

EC Stage II Non-Road emissions certified

Peak Torque at Speed.. . . . . . . . . . . . . . . . . . . . . . 2626 lbs-ft

Bore.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137.7 mm (5.4 in.)

Stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152.4 mm (6.0 in.)

Displacement.. . . . . . . . . . . . . . . . . . . . . 27.2 L (1658 cu. in.)

Aspiration.. . . . . . . . . . . . . . . . . . . Turbocharged-Aftercooled

Governor and Protection.. . . . . . . Electronic (ADEMTM A3)

Engine Weight, net dry (approx).. . . . . . . 2895 kg (6382 lb)

Capacity for Liquids

Lube Oil System (refill).. . . . . . . . . . . . . . . 68.1 L (18 gal)

Cooling System.. . . . . . . . . . . . . . . . . . . . . 54.9 L (14.5 gal)

Oil Change Interval.. . . . . . . . . . . . . . . . . . . . . . . . . . 250 hours

Rotation (from flywheel end).. . . . . . . . . Counterclockwise

Flywheel and Flywheel

Housing.. . . . . . . . . . . . . . . . . . . . . SAE No. 0 or SAE No. 1

Flywheel Teeth.. . . . . . 136 (SAE No. 0), 113 (SAE No. 1)

596-782 bkW

(800-1050 bhp)

2100 rpm

LEHW0052-00 Page 1 of 4

Image is a representation only, and

may show optional attachments.

FEATURES

Engine Design

- Proven reliability and durability

- Robust diesel strength design prolongs life and lowers

owning and operating costs

- Broad operating speed range

- High power density — lightweight engine for weightsensitive applications

- PTO drive options provide flexible access to auxiliary

power for pumps and other needs

Advanced Digital Engine Management

ADEM A3 control system providing integrated ignition,

speed governing, protection, and controls, including

detonation-sensitive variable ignition timing. ADEM A3

has improved: user interface, display system, shutdown

controls, and system diagnostics.

Optional Attachments

Optional Turbo Configurations — provides flexibility in

air intake and exhaust installations

Custom Packaging 

For any petroleum application, trust Caterpillar to meet

your exact needs with a factory custom package. Cat®

engines, generators, enclosures, controls, radiators,

transmissions — anything your project requires — can be

custom designed and matched to create a one-of-a kind

solution. Custom packages are globally supported and

are covered by a one-year warranty after startup.

Transmissions

Caterpillar has a full line of engine-transmission packages

that can be fully integrated with your axle, hydraulics, and

operator interface. Cat transmissions deliver continuous

operation under full load, smooth shifting at any speed,

and maximum up time, with unmatched durability and

easy maintenance.

Full Range of Attachments 

Large variety of factory-installed engine attachments

reduces packaging time

Testing

Every engine is full-load tested to ensure proper engine

performance.

Product Support Offered Through Global Cat Dealer 

Network

More than 2,200 dealer outlets

Cat factory-trained dealer technicians service every

aspect of your petroleum engine

Cat parts and labor warranty

Preventive maintenance agreements available for repairbefore-failure options

S•O•SSM program matches your oil and coolant samples

against Caterpillar set standards to determine:

- Internal engine component condition

- Presence of unwanted fluids

- Presence of combustion by-products

- Site-specific oil change interval

Over 80 Years of Engine Manufacturing Experience

Ownership of these manufacturing processes enables

Caterpillar to produce high quality, dependable products.

- Cast engine blocks, heads, cylinder liners, and flywheel

housings

- Machine critical components

- Assemble complete engine

Web Site

For all your petroleum power requirements, visit

www.catoilandgas.cat.com.
C27 ACERT® PETROLEUM ENGINE

596-782 bkW (800-1050 bhp)

LEHW0052-00 Page 2 of 4

standard equipment

Air Inlet System

Dual turbochargers side or rear mounted — inlet

152.4 mm (6 in.) hose connection

Control System

Electronic governing, PTO speed control

Programmable ratings

Cold mode start strategy

Automatic altitude compensation

Power compensation for fuel temperature

Programmable low and high idle and TEL

Electronic diagnostics and fault logging

Engine monitoring and protection system (speed,

temperature, pressure)

J1939 Broadcast (diagnostic, engine status, and control)

Cooling System

Thermostats and housing — outlet LH vertical orientation

Jacket water pump — gear-driven, centrifugal RH

Exhaust System

Exhaust manifold — dry, heat shields

Dual turbo — rear turbo exhaust, full marmon connection

127 mm (5 in.), maximum load 10 kg for direct

connection to turbo

Water-cooled center sections

Flywheels and Flywheel Housings

SAE No. 0 or SAE No. 1

SAE standard rotation

Fuel System

MEUI system

Fuel filter, RH ( 2 micron high performance)

Fuel transfer pump

Fuel priming pump (optional electric priming pump)

Lube System

Crankcase breather — rear mounted

Oil cooler — RH

Side turbo — oil filler in RH front gear case

Rear turbo — oil filler in RH valve cover

Oil level gauge — RH

Oil filter — RH

Oil pan rear sump

Mounting System

Front support — narrow

Power Take-Offs

Crankshaft pulley — 203.2 mm (8 in), 5 grooves

15.9 mm (.63 in) wide; 292.1 mm (11.5 in.) 1 groove

15.9 mm (.63 in.) wide

General

Vibration damper

Paint — Cat yellow

Lifting eyes

Automatic variable timing, electronic

Electronic installation kit 70-pin connector (connectors,

pins, sockets)

OPTIONAL ATTACHMENTS

Air Inlet System

Air lines

Air cleaners

Precleaners

Charging System

Battery chargers

Charging alternators

Alternator mountings

Circuit Breakers

Circuit breaker mounting

Cooling System

Blower fans

Suction fans

Radiators

Exhaust System

Muffler

Flywheel and Flywheel Housings

Fuel Systems

Electric fuel priming pump

Instrumentation

Gauges and instrument panels

Lube System

Lubricating oil

Oil pan

Oil filter

Mounting System

Engine supports

Power Take-Offs

Hydraulic pump drives

Pulley

Auxiliary drive

Starting System

Electric starting motor

Battery sets – 24V

Battery cable

Battery rack

Starting aids

Packaging

Overseas preservation

Storage preservation

Export packaging
C27 ACERT® PETROLEUM ENGINE

596-782 bkW (800-1050 bhp)

LEHW0052-00 Page 3 of 4

PERFORMANCE curves 

Turbocharged-Aftercooled

D Rating — 783 bkW (1050 bhp) @ 2100 rpm*

DM9035-00

BSFC

g/bkW-hr

Engine Power

bk

W

Torque

N•m

Engine Speed - rpm

1300 1400 1500 1600 1700 1800 1900 2000 2100 2200

4798

4386

3973

3561

783

737

691

645

208

206

204

202

BSFC

lb/bhp-hr

Engine Power

bhp

Torque

lb-ft

3539

3235

2930

2626

1050

988

926

865

.342

.339

.336

.333

Heat Rejection Data

Engine Speed Engine Power Rej to JW Rej to Atmos Rej to Exh From Aft Clr

rpm bkW bhp bkW Btu/min bkW Btu/min bkW Btu/min bkW Btu/min

2100 783.0 1050.0 295 16777 144 8189 687 39070 169.0 9611.0

2000 783.0 1050.0 284 16151 143 8132 672 38217 158.0 8985.4

1900 783.0 1050.0 285 16208 139 7905 680 38672 156.0 8871.7

1800 783.0 1050.0 292 16606 138 7848 681 38728 149.0 8473.6

1700 774.6 1038.8 289 16435 139 7905 670 38103 139.0 7904.9

1600 757.9 1016.4 282 16037 140 7962 649 36909 126.0 7165.6

1500 734.9 985.5 281 15980 138 7848 629 35771 115.0 6540.0

1400 703.4 943.3 284 16151 141 8019 609 34634 105.0 5971.3

1300 644.8 864.7 281 15980 129 7336 557 31677 85.0 4833.9

*Other engine ratings are available. Please contact dealer for performance data.
C27 ACERT® PETROLEUM ENGINE

596-782 bkW (800-1050 bhp)

Information contained in this publication may be considered confidential. Discretion is recommended when distributing.

Materials and specifications are subject to change without notice. The International System of Units (SI) is used in this publication.

CAT, CATERPILLAR, their respective logos, ACERT, ADEM, S•O•S, “Caterpillar Yellow” and the “Power Edge” trade dress,

as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without permission.

Performance Number: DM9035-00 ©2010 Caterpillar

LEHW0052-00 (2-10) All rights reserved.

Engine Dimensions

Length 1918 mm 75.5 in

Width 1463 mm 57.6 in

Height 1321 mm 52 in

Engine Weight (dry) 2895 kg 6382 lb

Note: Do not use for installation design. See

general dimension drawings for detail

(Drawing #282-3892).

RATING definitions and CONDITIONS

Engine Performance is corrected to inlet air standard

conditions of 99 kPa (29.31 in. Hg) dry barometer and

25°C (77°F) temperature. These values correspond to

the standard atmospheric pressure and temperature as

shown in SAE J1995.

Performance measured using a standard fuel with fuel

gravity of 35 degrees API having a lower heating value of

42,780 kJ/kg (18,390 BTU/lb) when used at 29°C (84.2°F)

where the density is 838.9 g/L (7.001 lb/U.S. gal).

The corrected performance values shown for Cat engines

will approximate the values obtained when the observed

performance data is corrected to SAE J1995, ISO 3046-2,

ISO 8665, ISO 2288, ISO 9249, ISO 1585, EEC 80/1269,

and DIN 70020 standard reference conditions.

IND-D

For service where maximum power is required for

periodic overloads.

Right Side View Front View

PETROLEUM ENGINE

1918 mm

75.5 in.

1463 mm

57.6 in.

1321 mm

52 in.
The Cat 3406 is an in-line, six-cylinder diesel built to

last, with major components offering an

exceptionally high strength-to-weight ratio. With

power ratings from 199–392 bkW (267–525 bhp), this

hard-working powerhouse offers reliable power for

a wide range of heavy-duty applications.

Lasting Performance is Built In

The one-piece cylinder heads resist twisting and

flexing that can cause head gasket problems and

coolant leaks. A steel spacer between the head

and block eliminates the need for liner

counterbores, greatly enhancing the strength and

fatigue life of the block.

The forged steel crankshaft is uniquely heat-treated

in a process developed and patented by Caterpillar.

Then it is dynamically balanced and super-finished.

The crankshaft’s high fatigue strength means it can

be reground up to three times.

Hard-faced intake and exhaust valves resist wear

at high heat, while the chrome-plated stems help

guard against seizure. Valves rotate three degrees

each lift, assuring good seating and uniform

temperature distribution.

Simplified Service and Maintenance

The direct injection fuel system uses adjustmentfree injection nozzles. Spin-off fuel and lube filters

and clamp-on air filters speed routine maintenance

procedures.

3406 DIESELS

3406

18

INDUSTRIAL ENGINE RATING GUIDE

Specifications

3406

137 x 165 (5.4 x 6.5)

14.6 (893)

1356 (2990)

1661 (65.4)

901 (35.5)

1336 (52.6)

3406 RATINGS In-Line 6

bkW bhp rpm bkW bhp rpm bkW bhp rpm bkW bhp rpm bkW bhp rpm

T

201 270 1800 224 300 2000 242 325 2100 283 380 2100 291 390 2100

TA

199 267 1300 — — — 199 267 1300 — — — — — —

205 275 1800 242 325 2000 269 360 2100 313 420 2100 336 450 2100

242 325 1800 242 325 2000 242 325 1800 — — — — — —

——— ——— 242 325 2100 — — — — — —

242 325 1800 276 370 2000 298 400 2100 358 480 2100 373 500 2100

257 345 1800 254 340 2000 250 335 2100 — — — — — —

——— ——— 257 345 1800 — — — — — —

——— ——— 269 360 1800 283 380 2100 291 390 2100

268 360 1800 268 360 2000 269 360 2100 298 400 2100 324 435 2100

——— ——— 280 375 2000 — — — — — —

——— ——— 280 375 2100 — — — — — —

——— ——— 298 400 1800 — — — — — —

——— ——— 298 400 2000 — — — — — —

280 375 1800 291 390 2000 298 400 2100 324 435 2100 362 485 2100

——— ——— 321 430 2100 — — — — — —

——— ——— 328 440 1800 — — — — — —

——— ——— 328 440 1900 366 490 2100 — — —

——— ——— 328 440 2000 — — — 384 515 1900

287 385 1800 328 440 2000 343 460 2100 373 500 2100 384 515 2100

313 420 1800 328 440 2000 343 460 2100 384 515 2100 392 525 2100

Abbreviations used:

T..................Turbocharged

TA...............Turbocharged/Aftercooled

PC...............Precombustion Chamber

3406 FIRE PUMP RATINGS In-Line 6

1460 rpm 1750 rpm 1900 rpm 2100 rpm 2200 rpm 2300 rpm

bkW bhp bkW bhp bkW bhp bkW bhp bkW bhp bkW bhp

T

183 247 218 292 233 312 246 330 — — 261 350

242 325 276 370 280 375 280 375 — — — —

TA

224 300 313 420 317 425 321 430 — — 339 455

— — 343 460 343 460 360 483 — — — —

Bore x Stroke mm (in)

Displacement liter (cu. in)

Ship Weight (TA) kg (lbs)

Approximate Dimensions:

Length mm (in)

Width mm (in)

Height mm (in)

A Rating B Rating C Rating D Rating E Rating

(Continuous) (Intermittent)
914. 

44 - 149 kW 

These are th

Air-cooled 3, 4, 5

3, 4, 6-cylinder t

Displacement: 1

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Advanced inject

Electronic gover

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Only few maint

Compact power

Your benefi

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u Technical data

1) Power ratings without deduction fan power requirement, incl. cooling system.

2) At optimal operating point without cooling fan, based on diesel fuel with a specific 

gravity of 0.835 kg/dm3 at 15°C.

3) Without starter motor/alternator, radiator and liquids, but with flywheel and flywheel 

housing and complete integrated cooling system. Characteristics based on max. 

possible torque.

The values given in this data sheet are for information purposes and are not binding.

The information given in the offer is decisive.

Engine type F 3 L 914 F 4 L 914 F 5 L 914 F 6 L 914 BF 3 

Number of cylinders 3 4 5 6 3 

Bore/stroke mm | inch 102/132 | 4.01/5.19 102/132 | 4.01/5.19 102/132 | 4.01/5.19 102/132 | 4.01/5.19 102/

Displacement l | cu. inch 3.2 | 197 4.3 | 263 5.4 | 329 6.5 | 395 3.2 

Compression ratio 20 20 20 20 18 

Max. rated speed rpm 2500 2500 2500 2500 250

Mean piston speed m/s | ft/sec 11 | 36 11 | 36 11 | 36 11 | 36 11 | 

Power ratings for construction equipment engines 1)

Power ratings kW | hp net 44.0 | 59.0 59.0 | 79.1 71.7 | 96.1 89.0 | 119.3 51.0 

kW | hp gross 46.2 | 61.9 61.5 | 82.5 74.9 | 100.4 92.2 | 123.6 53.4 

At speed rpm 2500 2500 2500 2500 230

Mean effective pressure bar | psi 6.53 | 94.6 6.56 | 95.0 6.41 | 92.8 6.60 | 95.6 8.01 

Power ratings for engines

highly intermittent operation kW | hp net 44.0 | 59.0 59.0 | 79.1 71.7 | 96.1 89.0 | 119.3 51.0 

kW | hp gross 46.2 | 61.9 61.5 | 82.5 74.9 | 100.4 92.2 | 123.6 53.4 

At speed rpm 2500 2500 2500 2500 230

Mean effective pressure bar 6.53 | 94.6 6.56 | 95.0 6.41 | 92.8 6.60 | 95.6 8.01 

Intermittent operation kW | hp net 42.0 | 56.3 56.0 | 75.1 70.0 | 93.9 85.0 | 114.0 – 

kW | hp gross 44.2 | 59.3 58.5 | 78.4 73.2 | 98.2 88.2 | 118.3 – 

At speed rpm 2500 2500 2500 2500 – 

Mean effective pressure bar 6.23 | 90.2 6.33 | 91.7 6.23 | 90.2 6.30 | 91.3 – 

Max. torque Nm | lb-ft 202 | 149.0 270 | 199.1 333 | 245.6 400 | 295.0 257 

At speed rpm 1500 1500 1500 1500 160

Minimum idle speed rpm 650 650 650 650 650 

Specific fuel consumption 2) g/kWh | lb/hp-hr 215 | 0.348 215 | 0.348 215 | 0.348 220 | 0.356 220 

Weight to DIN 70020, part 7A 3) kg | lb 277 | 610.7 307 | 676.8 380 | 837.7 430 | 948.0 312