John Deere 540B Cable Skidder – Parts, Specs & Serial Info

Description:

The John Deere 540B Skidder is a legendary cable skidder known for its rugged durability and straightforward design. Widely used in the forestry industry since the late 1970s, the 540B remains a popular choice due to its reliable engine, simple hydraulic system, and ease of repair in remote locations.

Engine:

• Make: John Deere

• Model: 6414D

• Type: 6-cylinder naturally aspirated diesel

• Displacement: 6.6L (404 ci)

• Horsepower: 100–110 HP

Transmission:

• Type: 4-speed powershift

• Torque converter with high/low range

• Manual gear selection with strong pulling power in all gears

Hydraulic System:

• Open center hydraulic system

• Pressure: ~2,250 psi

• Flow: ~25–30 gpm

• Single-function joystick and lever controls

Key Dimensions & Performance:

• Operating Weight: 18,000–20,000 lbs

• Wheelbase: 108 in (2,743 mm)

• Ground Clearance: 20 in

• Fuel Capacity: 42 gallons

Common Maintenance & Replacement Parts:

• Winch parts (gear sets, clutches) – frequent wear under heavy loads (Shop winch parts)

• Brake rebuild kits – drum brakes often need servicing (540B brake kits)

• Hydraulic seals & cylinders – replace after extended service intervals

• Transmission linkage and filter kits – key for smooth shifting and long transmission life

Common Issues & Quick Fixes:

• Brake failure or fading – usually due to worn shoes or contaminated drums; rebuild kits are available

• Hydraulic leaks at boom cylinders – swap out rod seals with hydraulic seal kits

• Stalling or power loss – commonly tied to fuel system clogs or dirty injectors

Serial Number Info:

• Found stamped on the left frame rail near the front tire

• Also located on a metal tag beneath the operator seat

• Serial numbers begin with “540B” followed by six digits (e.g., 540B123456)

Pro Tip: Use quality diesel fuel filters and keep the injection pump clean—many 540Bs suffer from fuel system neglect leading to power issues.