Caterpillar power backed by repeatable quality
Caterpillar engines drive the toughest oilfield, marine, and industrial assets. Miller Engine rebuilds CAT platforms with strict adherence to OEM specifications, ensuring horsepower, fuel efficiency, and uptime targets are achieved. Our technicians follow controlled procedures with calibrated tooling and document every critical measurement. The result is a diesel engine ready to drop into production with confidence.
Beyond the rebuild bench, we engineer integration plans that align fuel systems, control panels, and auxiliary equipment with your site’s electrical and mechanical architecture. Each engine package includes cradle-to-crate documentation: teardown reports, parts lists, torque logs, dyno curves, and emission summaries so environmental teams, reliability engineers, and financiers can audit the process. With inventory staged in Louisiana and strategic partners across North America, we can mobilize engines, generators, and ancillary hardware within your outage window.
Supported CAT families and applications
- Industrial prime movers: 3300/3400/3500 series for pumping, gas compression drivers, and mechanical drive systems.
- Generator sets: QST-level emission compliance and tailored switchgear integration for continuous or standby power.
- Marine and offshore: Auxiliary engines and main propulsion with ABS or Coast Guard documentation when required.
Rebuild workflow engineered for uptime
- Inspection & engineering plan: Ultrasonic, magnetic particle inspection, and dimensional verification of major components.
- Precision machining: Line boring, counterbore restoration, crankshaft grinding/polishing, and head surfacing per CAT tolerances.
- Assembly sequencing: Torque-angle fasteners, piston ring gap checks, and bearing clearances logged for QA.
- Dyno validation: Full load, part load, and transient performance recorded with oil, temperature, and exhaust data.
- Factory acceptance & site support: Engines receive load-bank documentation, oil analysis, and optional condition-based monitoring packages. Commissioning teams can manage alignment, exhaust tuning, and operator training onsite.
Customization and upgrade packages
- Emissions & regulatory compliance: Configure Tier 2/Tier 3 conversions, DPF systems, and SCR solutions to operate in strict jurisdictions without derating horsepower.
- Control modernization: Integrate CAT ECMs, Cummins PowerCommand, or third-party PLC/SCADA for remote monitoring, automatic transfer switches, and predictive maintenance analytics.
- Electrical system tailoring: Fabricate switchgear, bus ducting, paralleling gear, and protective relays to match existing plant infrastructure or mobile configurations.
- Extreme environment prep: Add arctic/heater packages, marine coatings, or high-altitude turbo and aftercooler adjustments to ensure dependable starts under challenging conditions.
Integration and commissioning support
We provide radiator systems, control panels, wiring harnesses, and ancillary equipment to match your site requirements. Commissioning technicians can travel to your facility to oversee installation, start-up, and operator training. Ongoing maintenance partnerships include oil analysis, remote monitoring, and rapid-response field service to keep CAT assets producing.
Our lifecycle services include preventative maintenance agreements, spare parts staging, and emergency failure response with guaranteed SLA windows. Customers receive quarterly performance reviews with fuel burn metrics, emissions status, and recommended upgrades to stay ahead of production demands.
Proven performance examples
- Offshore platform: Rebuilt CAT 3516 generator packages with ABS certification and redundant controls, reducing unscheduled outages by 37%.
- Mining operation: Delivered 3408 prime movers with new cooling packages and vibration monitoring, enabling a 20% increase in conveyor throughput.
- Municipal utility: Supplied 3512 generator set with grid-synchronization controls and remote dispatch, achieving under 5 second transfer times during peak events.
Ready to deploy CAT diesel engines
Connect with our applications team to discuss horsepower, voltage, duty cycle, and delivery timing. We will align in-stock engines or plan a rebuild window that meets your outage schedule.
