G3408

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Overview

Tough and durable, built on the industry-standard G3400 platform bring maximum uptime and low operating cost to your operation. G3408 engines meet the most demanding continuous duty gas compression applications with virtually no unscheduled downtime.Ideal applications for G3408 engines include gas lift, gas gathering, and wellhead gas compression. Cat G3408 gas engine. Ratings: 190-298 bkW (255-400 bhp) @ 1800 rpm are NSPS site compliant capable with customer-provided air-fuel ratio control and aftertreatment or available for non-regulated areas.

Engine Specifications

Units:
Minimum Rating 255.0 bhp 190.0 bkW Less
Maximum Rating 400.0 bhp 298.0 bkW Less
Emissions NSPS Site Compliant Capable or non-regulated NSPS Site Compliant Capable or non-regulated Less
Displacement 1099.0 in3 18.0 L Less
Compression Ratio 9.7:1 9.7:1 Less
Aspiration Naturally Aspirated or Turbocharged-Aftercooled Naturally Aspirated or Turbocharged-Aftercooled Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less
Flywheel and Flywheel Housing SAE No. 0 SAE No. 0 Less
Flywheel Teeth 136 136 Less
Weight (dry) 3700.0 lb 1678.0 kg Less
Oil Change Interval 750 hours 750 hours Less
Ignition, Protection Altronic III Altronic III Less
Stroke 6.0 in 152.0 mm Less
Bore 5.4 in 137.0 mm Less

Capacity for Liquids

Cooling System 14.5 gal 54.9 L Less
Lube Oil System (refill) 12.2 gal 46.2 L Less

Engine Design

- Improved reliability and durability - Ability to burn a wide spectrum of gaseous fuels - Robust diesel strength design prolongs life and lowers owning and operating costs- Broad operating speed range

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.

Gas Engine Rating Pro

GERP is a PC-based program designed to provide site performance capabilities for Cat® natural gas engines for the gas compression industry. GERP provides engine data for your site’s altitude, ambient temperature, fuel, engine coolant heat rejection, performance data, installation drawings, spec sheets, and pump curves.

Product Support Offered Through Global Cat Dealer

More than 2,200 dealer outletsCat factory-trained dealer technicians service every aspect of your petroleum engineCat parts and labor warrantyPreventive maintenance agreements available for repairbefore-failure optionsS•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

Over 60 years of natural gas engine productionOwnership 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.catoilandgasinfo.com

G3408 Standard Equipment

Air Inlet System
  • Air cleaner — single element with service indicator

Control System
  • Governor — Woodward PSG mechanical
  • Governor control — positive locking

Cooling System
  • Thermostats and housing
  • Jacket water pump
  • Aftercooler water pump
  • Aftercooler core

Exhaust System
  • Watercooled exhaust manifolds
  • Dry exhaust elbow

Flywheel & Flywheel Housing
  • SAE No. 0 flywheel
  • SAE No. 0 flywheel housing
  • SAE standard rotation

Fuel System
  • Gas pressure regulator
  • Natural gas carburetor

Ignition System
  • Digital ignition system

Instrumentation
  • Service meter

Lube System
  • Crankcase breather — top mounted
  • Oil cooler
  • Oil filter — RH
  • Auxiliary oil reservoir
  • Rear sump oil pan
  • Oil filler in valve cover and dipstick — RH

Mounting System
  • Engine supports

Protection System
  • Shutoffs

General
  • Paint — Cat yellow
  • Crankshaft vibration damper and drive pulleys
  • Lifting eyes

G3408 Optional Equipment

Air Inlet System
  • Air cleaner — dual element
  • Air inlet adapter
  • Precleaner
  • Air cleaner rain cap

Charging System
  • Battery chargers
  • Charging alternators
  • Ammeter gauge
  • Ammeter gauge and wiring
  • Control mounting

Control System
  • EG3P/2301A speed control governor
  • PSG electric governor
  • PSG pneumatic governor

Cooling System
  • Radiators
  • Non-sparking blower fan
  • Blower fan and fan drives for customer suppliedradiators
  • ATAAC conversion
  • Aftercooler
  • Expansion tank
  • Heat exchanger

Exhaust System
  • Flexible fittings
  • Elbows
  • Flanges
  • Rain caps
  • Mufflers
  • Exhaust manifold

Fuel System
  • Dual gas regulator
  • Low energy fuel carburetor
  • Low pressure gas conversion
  • Propane and natural gas valve and jet kits
  • Fuel filter

Ignition System
  • CSA ignition
  • Ignition ground wiring harness
  • Power supply — digital ignition system

Instrumentation
  • Gauges and instrument panels

Lube System
  • Auxiliary oil reservoir removal
  • Lubricating oil

Mounting System
  • Vibration isolators

Power Take-Offs
  • Auxiliary drive pulleys
  • Enclosed clutch
  • Clutch support
  • Front stub shaf
  • Flywheel stub shaft
  • Pulley removal

Protection System
  • Gas valves

Starting System
  • Air starting motor
  • Electric air start control
  • Air pressure regulator
  • Air silencer
  • Electric starting motor — single 24-volt
  • Starting aids
  • Battery sets (24-volt dry), cables, and rack

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