Marcus Vance, PE
Senior Heavy Machinery & Fleet Maintenance Engineer
Marcus Vance is a Licensed Professional Engineer with 18+ years of fleet management and heavy machinery diagnostics experience across major civil infrastructure projects.
Editorial Role
What Marcus Vance, PE Covers
Marcus Vance, PE contributes practical heavy equipment guidance focused on specs, maintenance intervals, diagnostic workflows, fleet operating costs, and model-to-model comparison decisions. Pages credited here are intended for equipment owners, fleet managers, mechanics, estimators, and buyers who need clear numbers before checking the final OEM manual or dealer documentation.
Technical pages are written to separate verified specification fields from editorial planning estimates such as fuel burn and hourly operating cost. Critical values such as lift capacity, transport dimensions, fluid specifications, torque values, and safety procedures should always be verified against the exact serial range and configuration.
Machine Coverage
Equipment Profiles Referenced by This Author
Published Technical Guides
Maintenance, diagnostics, fleet economics, and equipment comparison articles by Marcus Vance, PE.
CASE 580 Super N WT Brake and Stabilizer Troubleshooting: Roading Pull, Drift, Leaks and Digging Instability
A CASE 580 Super N WT troubleshooting workflow for brake pull, roading vibration, stabilizer drift, hydraulic leaks, backhoe instability and loader-end wear.
Volvo EC220E 500-Hour Maintenance Checklist: Hydraulics, Undercarriage, Cooling and Service Records
A Volvo EC220E 500-hour maintenance checklist for hydraulic oil condition, filters, undercarriage, cooling airflow, boom and stick pins, attachments and records.
Volvo EC220E Hydraulic Overheating Troubleshooting: Hot Oil, Slow Boom, Pump Noise and Weak Travel
Troubleshoot Volvo EC220E hot hydraulic oil, slow boom response, weak travel, pump noise, cooler restriction, low oil, foaming and attachment heat.
Komatsu WA320-8 Hydraulic and Steering Troubleshooting: Slow Lift, Brake Heat, Articulation Play and Loader Drift
Troubleshoot Komatsu WA320-8 slow lift, weak curl, hydraulic heat, steering wander, articulation play, brake heat, tire pull and loader drift.
Cat 305 CR 500-Hour Maintenance Checklist: Rubber Tracks, Blade, Aux Hydraulics and Compact Jobsites
A Cat 305 CR 500-hour maintenance checklist for rubber tracks, blade wear, auxiliary hydraulics, filters, cooling airflow, attachments and compact jobsite records.
Volvo L90H 500-Hour Maintenance Checklist: Tires, Brakes, Linkage, Cooling and Snow Duty
A Volvo L90H 500-hour maintenance checklist for loader tires, brakes, linkage, cooling airflow, hydraulic checks, bucket wear, snow duty and service records.
Komatsu WA320-8 Winter and Snow Prep: Tires, Chains, DEF, Cooling and Salt Exposure
Prepare a Komatsu WA320-8 wheel loader for winter snow work with tire checks, chains, DEF handling, coolant, batteries, cutting edges, salt cleanup and records.
Volvo L90H Hydraulic, Brake and Steering Troubleshooting: Slow Lift, Tire Pull and Loader Drift
Troubleshoot Volvo L90H slow lift, weak curl, hydraulic heat, brake pull, steering wander, tire issues, articulation play and loader drift before parts replacement.
Compact Excavator Auxiliary Hydraulic Attachment Guide: Flow, Pressure, Couplers, Case Drain and Heat
Match compact excavator attachments by auxiliary flow, pressure, couplers, return routing, case drain, backpressure, oil temperature, duty cycle and tool weight.
Mini Excavator 500-Hour Maintenance Checklist: Tracks, Blade, Hydraulics, Attachments, Filters and Cooling
A practical 500-hour mini excavator maintenance checklist for rubber tracks, blade, auxiliary hydraulics, bucket pins, filters, oil sampling, cooling airflow, final drives and attachments.
Cat 336 500-Hour Maintenance Checklist: Hydraulics, Fluids, Filters and Undercarriage
A Cat 336 maintenance checklist for 500-hour service planning, hydraulic contamination control, fluid sampling, cooling package inspection, filters, grease points, tracks, and work-order documentation.
Cat 336 Hydraulic Overheating Troubleshooting: High Oil Temperature, Slow Functions and Pump Noise
A Cat 336 hydraulic overheating diagnostic workflow for high oil temperature, slow boom or stick response, pump noise, cooler restriction, contamination, relief leakage, and heavy attachment duty.