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PL72 Pipelayer

Cat Pipelayers have been the standard of the pipeline industry for decades. A worldwide network of Cat dealers, in tune with the special high production needs of pipeliners, supports these durable and dependable machines. Cat Pipelayers are purpose-built to meet the unique demands of pipeline customers. And like every Cat machine, Pipelayers are designed for long life, serviceability and rebuild capability to help keep owning and operating costs low. The PL72 answers customer needs for increased lift capacity, enhanced slope capability, ease of operation, performance and transportability.


Engine Model

Cat C9.3

Flywheel Power


Net Power - Rated - ISO 9249/SAE J1349


Net Power - Rated - ISO 9249/SAE J1349 (DIN)



U.S. EPA Tier 4 Final/EU Stage V/Korea Tier 4 Final or UN ECE R96 Stage IIIA equivalent to U.S. EPA Tier 3/EU Stage IIIA

Fuel Tank

109.6gal (US)

DEF Tank(1)

4.5gal (US)

Note (1)

Rated speed 2,000 rpm. Net power advertised is the power available at the flywheel when the engine is equipped with fan, air cleaner, muffler, and alternator. Net power is tested per ISO 9249:2007 and SAE J1349:2011.

Note (2)

All non-road Tier 4 Interim and Final, Stage IIIB, Stage IV, Stage V, Japan 2014 and Korea Tier 4 Final diesel engines are required to use only ultra-low sulfur diesel (ULSD) fuels containing 15 ppm (mg/kg) sulfur or less. Biodiesel blends up to B20 (20%

Note (3)

Diesel Exhaust Fluid (DEF) used in Cat Selective Catalytic Reduction (SCR) systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241.


Lift Capacity


Operating Weight


Shipping Weight



6.1 m (20 ft) Boom


7.3 m (24 ft) Boom



Track Gauge


Track on Ground


Ground Contact Area (ISO 16754)


Ground Pressure (ISO 16754)


Shoe Width


Dimensions (Approximate)

Width - Tractor - Standard Shoes


Width - Tractor - Counterweight Extended


Width - Tractor - Counterweight Retracted


Width - Tractor - Counterweight/Boom Removed


Track Gauge


Length - Track on Ground


Machine Height - Top of Counterweight


Height - Machine - Cab and ROPS


Boom Height (at SAE 1.22 m [4 ft] Overhang) 6.1 m (20 ft) Boom


Boom Height (at SAE 1.22 m [4 ft] Overhang) 7.3 m (24 ft) Boom


Air Conditioning System

Air Conditioning

The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 2.5 kg of refrigerant which has a CO2 equivalent of 3.575 metric tonnes.

Standard Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Power Train
    • Cat C9.3 diesel engine: Electronic Unit Injection (EUI) Aftertreatment Meets Tier 4 Final/ Stage V or Tier 3/Stage IIIA equivalent emission standards, depending on region of sale.
    • Aftercooler, air-to-air (ATAAC)
    • High performance single plane cooling system
    • Coolant, extended life with protection to -37 C (-34F)
    • 24V electric start
    • Zero speed hydraulic fan, reversing and hydraulically driven, electronically controlled
    • Filter, air with electronic service indicator
    • Final drives: Four double reduction planetary
    • Fuel priming pump, electric
    • Parking brake, electronic
    • Precleaner, strata-tube dust ejector
    • Prescreener
    • Starting aid, ether
    • Torque divider
    • Transmission, electronically controlled 3-speed Powershift
    • Wastegate turbocharger
    • Water separator
  • Operator Environment
    • Rear Vision Camera
    • Armrest, adjustable
    • Deactivation switch, hydraulic controls
    • Advisor operator interface: Electronic monitoring system, Diagnostic service information, Operator preferences
    • ROPS
    • Decelerator pedal
    • Dual brake pedal
    • Seat belt, retractable
    • Load Moment Indicator (LMI)
    • Heater and ventilation
    • Differential steering control, with touch shift
    • Storage compartment
  • Pipelaying Equipment
    • Block and hook with latch
    • Counterweights, extendible segmented
    • Winches, hydraulic actuated and electronically controlled
  • Electrical
    • Alarm, backup
    • Batteries, four maintenance free heavy duty
    • Converter, 12V, 10 amp with one outlet
    • Horn, forward warning
    • Lights, two front, two rear
    • Starting receptacle
    • Machine disconnect switch
    • Machine diagnostic connector
    • Boom and counterweight limit switch
  • Undercarriage
    • Carrier roller
    • Track roller frames
    • Hydraulic track adjusters
    • Master links, two piece
    • Non-suspended undercarriage
    • Rollers and idlers, lifetime lubricated
    • Sprocket rim segments, replaceable
    • Track guiding guards
    • Medium service grouser 760 mm (30 in) Sealed and lubricated track (48 section)
  • Other Standard Equipment
    • Bumper, front with towing device
    • Drawbar, heavy duty
    • Ecology drains: Engine oil, coolant, hydraulic oil, torque converter, fuel tank, power train case and transmission
    • Enclosures, perforated engine
    • Hood, perforated
    • Bottom guards, hinged
    • Guard, hinged radiator
    • Hydraulics, independent steering and work tool pumps
    • Hydraulic system, electronically activated for hook, boom and counterweight control
    • Oil cooler, hydraulic
    • Product Link ready
    • S-O-S sampling ports
    • Steering, electronically controlled power differential
    • Vandalism protection for fluid compartments

Optional Equipment:

  • Note
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • Operator Environment
    • Cab with air conditioning, heat and 150 amp alternator
    • OROPS with heat and 150 amp alternator
    • Cloth air seat
    • Deluxe seat
    • Vinyl seat
    • Heated seat
  • Undercarriage
    • Arctic rollers
    • Standard rollers
  • Technology Products
    • Product Link
  • Pipelaying Equipment
    • Boom and cables 6.1 m (20 ft)
    • Boom and cables 7.3 m (24 ft)
  • Other Optional Equipment
    • CE Certification

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