336 Excavator

  • Specs Summary
  • Minimum Rating
    490 bhp (365 bkW)
  • Maximum Rating
    490 bhp (365 bkW)
  • Peak Torque at Speed
    2161 N•m (1594 lb-ft) @ 1400 rpm
  • Displacement
    893 in3 (14.6 L)

3406C Well Servicing HazPak

When the job takes you into a hazardous location, Cat® HazPak engines are ready. Our complete range of services and engine packages cover both industry standards and your operation with maximum safety.Cat 3406C HazPaks are hazardous location power units that are the ideal solution for specialized and demanding operations in the oilfield. Units are hazardous-location certified from the factory to minimize installation design, time, and cost. HazPaks are certified to operate in potentially explosive environments.Cat hazpaks are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty.Cat 3406C HazPak. Rating: 365 bkW (490 bhp) @ 2100 rpm

Package Specifications

  • Minimum Rating 490 bhp (365 bkW)
  • Maximum Rating 490 bhp (365 bkW)
  • Peak Torque at Speed 2161 N•m (1594 lb-ft) @ 1400 rpm
  • Displacement 893 in3 (14.6 L)
  • Aspiration Turbocharged-Aftercooled
  • Governor and Protection Hydromechanical
  • Weight, Net Dry (approx) 6481.6 lb (2940 kg)
  • Rotation (from flywheel end) Counterclockwise
  • Flywheel and Flywheel Housing SAE 1
  • Stroke 6.5 in (165 mm)
  • Bore 5.4 in (137 mm)
  • Flywheel Teeth 113
  • Emissions Non-certified

Capacity for Liquids

  • Lube Oil System (refill) 40 qt (37.9 l)
  • Cooling System 79.9 qt (72.8 l)

Standard Equipment

Air Inlet System

  • Dry-type two-element air filter with restriction indicator, separate circuit aftercooler with ATEX-approved air shutoff valve, inlet flame arrestor

Control System

  • LH-side remote positive-lock speed control lever, hydromechanical governor, pneumatic or hydraulic shutdown control input for air shutoff valve and fuel shutoff cylinder, mechanical speed and temperature monitoring to provide control of air shutoff valve

Cooling System

  • Cooling package designed for 45°C ambient capability; single cooling circuit for jacket water, exhaust cooler, and aftercooler; offshore-capable radiator is manufactured usingsteel fabrications, galvanized solder dipped cooling elements and all stainless

Exhaust System

  • Exhaust gas cooler, plenum, and outlet box assembly; ATEX compliant – designed to limit the exhaust gas and exhaust duct surface temperatures to T3 (200°C); exhaust gas flametraps suitable for Gas Group IIA; designed and tested in accordance with the reco

Flywheel and Flywheel Housing

  • SAE No. 1 cast iron housing; flywheel for SAE-1 housing, pilot bore for 100 mm diameter bearings; provides LH and RH starter bore location

Fuel System

  • Mechanical fuel injection, fuel priming pump, primary filter and water separator, engine-mounted secondary fuel filter


  • Package ambient capability is -20°C to 45°C designed for Gas Group IIA; all systems meet temperature class T3 (200°C limit); includes a declaration of conformity for the entire package scope; radiator package, engine, and exhaust system fitted to sub-fram

Lube System

  • Oil cooler, LH oil gauge, remote-mounted oil filters for easy service

Optional Equipment

Air Compressor

  • Belt-driven, two-cylinder, single-stage, reciprocating with a rated displacement of 13.2 cfm at 1250 rpm compressor speed; includes two environmental drains

Charging System

  • 24V 35A EX d ATEX compliant alternator for Gas Group IIB, temperature class T3; heavy-duty, brushless. 24V 65A alternator, NEC 500 Class 1 Division 2 for Gas Groups C&D, temperature Class T3; heavy-duty, brushless. 24V 55Ah EX d e II T4 increased safety d

Control System

  • • Air or hydraulic shutdown system input options available
  • • Basic control panel – includes start button, run/stop switch, and emergency stop button.
  • • PCS2 control board – provides supervisory safety system functionality and overspeed shutdown control; includes start button, run/stop switch, emergency stop button, mounting locations for throttle control and messenger display, userconfigurable alarm an
  • • 3GP control panel – provides gas detection, supervisory safety system functionality, and overspeed shutdown control; allows operation without exhaust flame traps; includes start button, run/stop switch, emergency stop button, mounting locations for thro

Fuel System

  • Fuel cooler, installed, maintains acceptable fuel temperature when running from day tank

Starting System

  • Air and hydraulic starters available