John Deere 903M Tracked Feller Buncher – Parts, Specs & Serial Info

Description:

The John Deere 903M Tracked Feller Buncher is a high-horsepower forestry machine designed for tough, uneven terrain and large-scale timber harvesting. This purpose-built, tracked unit offers exceptional stability, operator visibility, and cutting power with robust hydraulics and advanced leveling technology.

Engine:

• Make: John Deere PowerTech™

• Model: 6090H

• Type: 9.0L 6-cylinder turbocharged diesel

• Horsepower: 330 HP (246 kW) net

Transmission & Undercarriage:

• Dual-path hydrostatic drive

• Electronically controlled variable displacement pumps

• Steel tracks with optional single or double grouser pads

• Slope-leveling capability up to 26°

Hydraulic System:

• Closed-center, load-sensing system

• Pressure: 5,000 psi (345 bar)

• Flow: 134 gpm (507 L/min)

• Multi-function joystick controls for smooth simultaneous operations

Key Dimensions & Performance:

• Operating Weight: Approx. 74,000 lbs (33,565 kg)

• Ground Pressure: 7.1 psi (varies by track width)

• Swing Torque: 95,900 ft-lb

• Reach (Boom+Arm): Up to 29 ft (8.8 m)

Common Maintenance & Replacement Parts:

• Track rollers and idlers – wear with time, especially in rocky terrain (Shop undercarriage parts)

• Hydraulic cylinder seal kits – regular maintenance item due to high pressure

• Rotary manifold and swing motor seals – frequent leak points needing inspection

• Cab leveling sensors and components – vital for machine stability on slopes

Common Issues & Quick Fixes:

• Hydraulic overheating or pressure loss – usually caused by clogged filters or worn main pumps

• Cab leveling errors – check for faulty tilt sensors or broken wiring

• Track tension problems – adjust with grease cylinder; replace worn adjusters if necessary

Serial Number Info:

• Located on a plate inside the operator’s cab door and stamped on the frame behind the cab

• Starts with “1DW903MX…”

Pro Tip: To avoid expensive downtime, inspect the track tension weekly and grease all swing and boom pivot points daily, especially during wet conditions.