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.
Cat D6 500-Hour Maintenance Checklist: LGP VPAT Blade, Powershift, Fluids and Undercarriage
A Cat D6 500-hour maintenance checklist for LGP VPAT dozers covering fluids, filters, cooling airflow, 4-speed powershift, blade linkage, tracks, ripper prep and service records.
Cat D6 Powertrain and Undercarriage Troubleshooting: Track Slip, Steering Pull, Blade Drift and Heat
Cat D6 troubleshooting workflow for steering pull, poor pushing power, track slip, blade drift, hot transmission, final drive leaks, packed tracks and stop-work symptoms.
Cat D6 Seasonal Maintenance Guide: Winter Starts, Summer Cooling, LGP Tracks and Blade Wear
A Cat D6 seasonal maintenance guide for winter starts, fuel, DEF, powershift warm-up, summer cooling, dusty grading, LGP tracks, blade wear, storage and return-to-service checks.
DEVELON DX225LC-7 500-Hour Maintenance Checklist: Hydraulics, Undercarriage and Service Records
A DEVELON DX225LC-7 maintenance guide for 500-hour service planning, hydraulic oil condition, filters, cooling airflow, undercarriage checks and Doosan-to-DEVELON record keeping.
Liebherr R 936 Compact Radius Excavator Guide: Tight-Site Work, Transport and Lift Planning
A Liebherr R 936 Compact guide for compact-radius excavator selection, urban utility work, tail swing limits, lift planning, transport checks and jobsite fit.
Hitachi ZX350LC-7H Hydraulic Overheating Troubleshooting: Hot Oil, Weak Travel and Slow Cycle Times
A Hitachi ZX350LC-7H troubleshooting workflow for hydraulic oil overheating, weak travel, slow boom cycle times, pump noise, cooler restriction and attachment heat.
CASE 650M 500-Hour Maintenance Checklist: Small Dozer Tracks, Blade, Cooling and Fluids
A CASE 650M 500-hour maintenance checklist for track tension, undercarriage wear, blade linkage, cooling airflow, hydraulic oil, filters, final drives and service records.
DEVELON DX225LC-7 Slow Boom and Weak Travel Troubleshooting: Hydraulics, Pilot Response and Tracks
A DEVELON DX225LC-7 troubleshooting workflow for slow boom response, weak travel, hot oil, pilot control issues, track drag, pump noise and attachment fade.
CASE 650M Steering, Tracking and Blade Troubleshooting: Pulling, Drift, Overheating and Grading Problems
A CASE 650M troubleshooting guide for dozer pulling, steering complaints, blade drift, track issues, overheating, hydraulic leaks and poor finish grading.
Komatsu WA320-8 500-Hour Maintenance Checklist: Loader Linkage, Tires, Brakes and Cooling
A Komatsu WA320-8 500-hour maintenance checklist for loader linkage, tires, brakes, cooling airflow, hydraulics, bucket wear, filters and service records.
CASE 580 Super N WT 500-Hour Maintenance Checklist: Brakes, Stabilizers, Loader Pins and Backhoe Hydraulics
A CASE 580 Super N WT maintenance checklist for brakes, stabilizers, loader pins, backhoe boom, hydraulic leaks, tires, cooling, filters and service records.
Cat 305 CR Hydraulic and Track Troubleshooting: Weak Thumb, Hot Oil, Track Drift and Blade Issues
A Cat 305 CR troubleshooting workflow for weak thumb force, slow auxiliary hydraulics, hot oil, track drift, rubber track damage, blade drift and attachment setup.