Caterpillar 3408C Industrial Diesel Engine
Part Number: 169-3690 Model: 3408C |
Engine Type: 4?stroke, 65° V?8, turbocharged & jacket?water aftercooled diesel |
Displacement: 18.0 L (1099 cu in) |
Emissions: EPA Tier 2 / EU Stage II |
Power Range: 302–443 bkW (405–594 bhp) @ 1800–2300 rpm
Product Overview
The Caterpillar 3408C is a heavy?duty, electronically controlled industrial diesel engine built for continuous?duty, high?load applications in construction, mining, oil & gas, marine, and power generation. Derived from Cat’s proven 3400?series platform, it delivers exceptional torque, fuel efficiency, and durability under extreme operating conditions. Engineered for maximum uptime and low total cost of ownership, the 3408C combines robust mechanical design with advanced electronic control for precise performance and reliable operation.
Core Design & Engineering Features
Engine Architecture
- Cylinder Configuration: 65° V?8, 4 valves per cylinder (2 intake, 2 exhaust) | Bore × Stroke: 137.2 mm × 152.4 mm (5.40 in × 6.00 in) | Compression Ratio: 14.5:1
- Aspiration: Twin?series turbocharged + jacket?water aftercooled (JWAC) for consistent power density and low?speed torque
- Combustion System: Direct fuel injection (DI) with optimized combustion chamber geometry for efficient fuel burn and reduced emissions
- Crankshaft & Lubrication: Forged steel crankshaft with dual viscous dampers; full?pressure lubrication with gear?driven oil pump; 750?hour oil change interval
- Block & Heads: Heavy?duty cast?iron block and cylinder heads for structural rigidity and extended service life
- Flywheel & Housing: SAE No. 0 flywheel housing; 136?tooth flywheel for standard industrial/marine mounting
Electronic Control & Fuel System
- Engine Control Module (ECM): Cat ADEM™ electronic control for real?time fuel delivery, timing, and load management
- Fuel Injection: High?pressure mechanical?electronic unit injectors for precise fuel metering and optimal combustion
- Governor: Electronic speed control for stable operation across variable loads and speeds
- Diagnostics: On?board diagnostics (OBD) for fault code detection, performance monitoring, and simplified service
Technical Specifications
表格
| Parameter |
Standard Value |
Metric / Imperial |
| Net Power (SAE J1349) |
302–443 bkW (405–594 bhp) |
@ 1800–2300 rpm |
| Displacement |
18.0 L |
1099 cu in |
| Bore × Stroke |
137.2 mm × 152.4 mm |
5.40 in × 6.00 in |
| Compression Ratio |
14.5:1 |
Direct injection optimized |
| Aspiration |
Turbocharged + jacket?water aftercooled |
JWAC configuration |
| Rotation |
Counterclockwise (flywheel end) |
Standard industrial/marine |
| Dry Weight |
~1814 kg |
~4000 lb |
| Firing Order |
1?8?4?3?6?5?7?2 |
V?8 injection sequence |
| Valve Lash (Cold) |
Intake: 0.38 mm; Exhaust: 0.76 mm |
0.015 in; 0.030 in |
| Oil System Capacity |
37.9 L |
10.0 US galCat |
| Cooling System Capacity |
54.9 L |
14.5 US galCat |
| Max Combustion Pressure |
~180 bar |
Heavy?duty operation |
| Idle Speed |
600–800 rpm |
Adjustable via ECM |
Emissions & Compliance
- Emissions Standard: EPA Tier 2 / EU Stage II certified for industrial and marine applications
- Combustion Efficiency: Direct injection + electronic control minimizes unburned fuel and particulate matter
- Aftertreatment Compatibility: Ready for retrofit with Cat exhaust aftertreatment systems for higher emission standards
- Global Certification: Compliant with international emissions regulations for non?road mobile machinery
Application Compatibility
Primary Industrial Uses
- Construction: Bulldozers (D9R), wheel loaders, excavators, and heavy haul trucks
- Mining: Underground loaders, haulage trucks, and stationary mining equipment
- Oil & Gas: Well service, fracturing rigs, gas compression, and offshore support vessels
- Marine: Propulsion for tugboats, push boats, fishing vessels, and auxiliary power for ships
- Power Generation: Prime/standby generator sets (300–450 kVA)
- Industrial: Pumping stations, compressors, and heavy industrial machinery
Mounting & Interface
- SAE No. 0 Flywheel Housing: Standard interface for direct?drive or gear?drive attachments
- Left/Right Hand Service: Configurable for dual?engine installations or space?constrained applications
- Width: 1220 mm (48 in) for compact oilfield service rig integration
Installation & Service Guidelines
Pre?Installation
- Verify foundation rigidity and alignment per Cat installation specifications
- Inspect fuel, lubrication, and cooling systems for compatibility with 3408C requirements
- Confirm electrical system (12V/24V) and instrumentation match engine control requirements
Commissioning
- Perform pre?start checks: oil level, coolant, fuel pressure, and ECM connections
- Calibrate fuel injection and speed control via Cat Electronic Technician (ET) software
- Conduct load?bank testing to validate performance across 0–100% load
Maintenance Best Practices
- Follow Cat 750?hour oil change interval with Cat DEO CJ?4 or equivalent diesel engine oil
- Inspect turbocharger, injectors, and valve lash every 1500 hours
- Monitor exhaust temperature, oil pressure, and ECM fault codes for early issue detection
- Replace air filters, fuel filters, and coolant per scheduled maintenance intervals
Standard Equipment & Options
Standard Features
- Cat ADEM™ electronic control system
- Twin?series turbocharger + JWAC assembly
- Forged steel crankshaft with dual viscous dampers
- SAE No. 0 flywheel & housing
- Full instrumentation panel (temperature, pressure, speed, alarms)
- Integrated safety shutdowns (overtemp, overpressure, low oil pressure)
Factory Options
- High?output performance calibration (up to 443 bkW / 594 bhp)
- Marine?grade corrosion protection for saltwater environments
- Cold?start kit for sub?zero ambient conditions
- Sound?attenuated enclosure for noise?sensitive sites
- Remote monitoring & telematics (Cat Product Link™)
- Dual?fuel conversion capability (diesel + natural gas)
Quality & Warranty
- OEM Manufacturing: Built to Caterpillar’s ISO 9001 global quality standards
- Endurance Testing: Validated via 10,000+ hour continuous?duty field trials
- Warranty: 12?month / 2000?hour standard warranty; extended service coverage (ESC) available
- Genuine Cat Parts: Full line of replacement components for minimal downtime and long service life
Why Choose Cat 3408C?
- Unmatched Durability: Heavy?duty design for 24/7 operation in extreme conditions
- Superior Torque: Low?speed torque for heavy?load starting and acceleration
- Fuel Efficiency: Electronic control + direct injection optimize fuel consumption
- Low TCO: Extended service intervals and reliable design reduce lifecycle costs
- Global Support: Cat dealer network for parts, service, and technical support worldwide
- Proven Platform: 3400?series engines with millions of hours in industrial service
