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336 Excavator

  • Specs Summary

3512E Tier 4 Final Well Service Engine

Well stimulation operations in the oilfield are complex and demanding. The 3512E Tier 4 Final engine for well service operations was specifically developed to meet Tier 4 Final emissions and to meet the highest standards in performance, durability, and reliability. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. 3512E engines, with ratings: 1678-1864 bkW (2250-2500 bhp) @ 1800 rpm meet U.S. EPA Non-road Mobile Tier 4 final emission standards.

Standard Equipment

Air Inlet System

  • Air-to-air aftercooled
  • Optional heavy-duty air cleaners (dual element/service indicator with precleaners)
  • Air cleaners (single element w/service indicator)
  • Four front-mounted turbochargers

Cooling System

  • Thermostats and housing, jacket water pump, gear-driven centrifugal (gear-driven centrifugal pumps)
  • Coolant regulator conversion
  • Water level switch gauge
  • Coolant level sensors and coolant conditioner
  • External transmission cooler connections
  • Variable speed hydraulic fan pump

Flywheels & Flywheel Housing

  • Flywheel, SAE No. 0, 151 teeth

Fuel System

  • Secondary/tertiary fuel filters
  • Fuel priming pump (electric)
  • Common rail fuel system
  • Fuel transfer pump

Lube System

  • Crankcase breather — top-mounted
  • Electric prelube
  • Fumes disposal
  • 500- hour deep sump oil pan (rear sump pan)
  • Oil cooler
  • Oil filler and dipstick — LH
  • Oil pump
  • Oil filter — RH spin-on type
  • Rear sump oil pan, 250-hour change interval
  • Oil pan drain valve, 1" NPT female connection
  • Oil scavenger pump

Mounting System

  • Trunion front support

Power Take-Offs

  • Flywheel stub shaft
  • Front Crankshaft Adapter
  • Accessory drive -- Lower LH/upper RH
  • Front housing, two-sided

Protection System

  • Sensors
  • Shutoff controls
  • ADEM A4 ECU system to provide customer programmable engine deration strategies to protect against adverse operating conditions
  • Emergency stop logic inputs provided at 40-pin customer interface connection
  • Dual Air inlet shutoff
  • Oil pressure monitor


  • Air compressor
  • Aftertreatment support package
  • Paint, Cat yellow
  • Vibration damper and guard
  • Lifting eyes
  • Hydraulic valve lash adjusters
  • Power link engine monitoring

Optional Equipment

Charging System

  • Charging alternators

Control System

  • With electronic fuel injector fuel system (10 amp DC power required to drive electronic engine control module)
  • Throttle position sensors
  • Local speed throttle control
  • Governor conversion
  • Variable speed radiator fan control

Emissions Certifications

  • US EPA Tier 4 Final

Exhaust System

  • Land Well Service Engine:
  • Offshore Well Service Engine:
  • Flexible exhaust fitting
  • Elbows, flange, bellows, rain caps
  • Industrial and residential mufflers (painted steel and stainless steel)

Fuel Systems

  • Flexible fuel lines
  • Primary fuel filter/fuel water separator


  • Remote panel display and remote cylinder temperature display

Starting System

  • Hydraulic starter
  • Hydraulic starter - RH
  • Dual hydraulic starter - LHR
  • Manual engine barring device