John Deere 1270D Harvester – Parts, Specs & Key Maintenance Info

Description:

The John Deere 1270D Harvester is a dependable mid-size wheeled harvester designed for high-production thinning and clear-cut applications. Known for its smooth operation, fuel efficiency, and precise cutting capabilities, the 1270D combines power and maneuverability for demanding forestry operations. It features the rugged Timbermatic™ control system and excellent all-terrain performance through its 6-wheel drive configuration.

Engine Specs:

• Make: John Deere

• Model: 6081H

• Type: 6-cylinder, turbocharged diesel

• Displacement: 8.1 Liters

• Power Output: 190 HP (142 kW)

• Emissions Tier: Tier II

Transmission & Drive:

• Drive Type: 6-wheel hydrostatic drive

• Max Speed: 12.4 mph (20 km/h)

• Axles: Heavy-duty bogie axles with differential lock

• Terrain Capability: Excellent for soft and sloped ground

Hydraulic System:

• Pump Flow: 220 L/min (58 GPM)

• System Pressure: 3,770 psi (260 bar)

• Control System: Timbermatic™ control system for boom and harvester head

Key Dimensions & Weight:

• Operating Weight: ~39,700 lbs (18,000 kg)

• Length: 28.5 ft

• Width: 9.5 ft

• Height (Cab): 12 ft

• Ground Clearance: 24 in

Performance Highlights:

• Advanced Timbermatic system for productivity tracking and precision control

• Smooth and responsive hydraulics for accurate felling and delimbing

• Optional rotating and leveling cab for operator comfort on slopes

• Available with H754 or H480C harvester head for various log sizes

Maintenance & Common Issues:

• Frequent Maintenance Parts:

  • Hydraulic Cylinder Seal Kits

  • Harvester Head Parts

  • Electrical Components & Sensors

• Common Issues:

  • Boom hydraulic lag – inspect cylinder seals and check fluid levels

  • Sensor failure – typically due to wiring wear or moisture ingress

  • Cooling system clogging – regular cleaning of radiators and screens advised

Pro Tips:

• Use Timbermatic diagnostics to track early signs of hydraulic or sensor faults

• Clean harvester heads daily in resin-heavy environments to prevent wear

• Replace delimbing knives before excessive dulling to maintain cut quality

Serial Number Location:
The serial number is located on a plate under the cab door on the right side of the machine. Prefix for the 1270D is WJ1270D followed by a six-digit unit number.