Model Number :
C4.2 ACERT
Engine Model :
Cat C4.2 ACERT (excavator variant for Cat 311D/312D/314D/315D)
Engine Type :
Vertical, inline 4-cylinder, 4-stroke, water-cooled, turbocharged & air-to-air aftercooled (ATAAC) diesel engine with ADEM A4 electronic control module
Bore × Stroke :
102mm × 130mm (4.02in × 5.12in)
Displacement :
4.25L (4250cc/259 cu·in)
Compression Ratio :
17.5:1 (standard excavator variant)
Rated Power :
98kW (131HP) @ 2200rpm (high power variant), 91kW (122HP) @ 2000rpm (standard power variant)
Maximum Torque :
500-540Nm (369-398lb-ft) @ 1400rpm (depending on power variant)
Fuel System :
High Pressure Common Rail (HPCR) Fuel System, electronic control with advanced ACERT technology
Cooling System :
Mechanical/Electric fan drive, forced water cooling with aluminum radiator + aftercooler + closed crankcase ventilation (CCV)
Lubrication System :
Gear pump, force-lubrication with full-flow filtration + bypass filtration
Oil Capacity :
16L (16.9qts) including oil filter
Fuel Consumption :
≤190g/kW·h (at rated power, excellent fuel efficiency for mid-size excavator)
Starter Type :
Electric starter, 24V/7.0kW × 1 (single starter with cold start aid system, -25°C cold start capability)
Alternator :
24V/90A (120A optional)
Dry Weight :
Approx. 400-450kg (depending on variant and emissions package)
Dimensions (L×W×H) :
1350mm × 850mm × 1050mm (engine only)
Emission Standard :
EPA Tier 3, EU Stage IIIA (without DPF/SCR system, reliable performance in global markets)
Key Features :
Robust cast iron engine block, replaceable wet cylinder liners, forged steel crankshaft, single cylinder head with 4 valves per cylinder, ACERT technology for optimal performance and low emissions, excellent low-speed torque, 12000+ hours major overhaul pe
Application :
Caterpillar 311D/311D2/312D/312D2/314D/314D2/315D/315D2 hydraulic excavators, 11-15 ton class construction/mining excavators, wheeled excavators (M312D/M315D)
Common Part Numbers :
324-4039 (engine assembly), 324-3964 (engine assembly), 305-4922 (turbocharger), 305-4766 (cylinder head), 296-4710 (crankshaft)