John Deere 848G Skidder – Specs, Parts & Common Repairs

Description:

The John Deere 848G Skidder is a high-horsepower, dual arch grapple skidder designed for maximum pulling power and durability in heavy-duty logging operations. With its rugged drivetrain, responsive hydraulics, and reinforced boom structure, the 848G is built to perform in steep slopes, muddy conditions, and high-production timber harvesting. The comfortable, spacious cab and straightforward service access make it a reliable choice for long working hours in the woods.

Engine Specs:

• Make: John Deere

• Model: 6068T

• Type: 6-cylinder, turbocharged diesel

• Displacement: 6.8 Liters

• Power Output: 200 HP (149 kW)

• Cooling System: High-efficiency radiator with side-by-side cooling layout

Transmission & Axles:

• Type: Powershift

• Gears: 6 forward / 3 reverse

• Differentials: Front and rear locking

• Final Drives: Outboard planetary

• Brakes: Enclosed wet disc brakes

Hydraulic System:

• Pump Flow: Approx. 45–50 GPM

• System Pressure: Up to 2,800 psi

• Control: Manual or electrohydraulic (varies by build)

• Grapple Type: Dual arch with rotating grapple

Dimensions & Weight:

• Operating Weight: ~39,500 lbs

• Length: 25.6 ft

• Width: 10.5 ft

• Height (Cab): 11.2 ft

• Ground Clearance: 23.5 in

Performance Highlights:

• Powerful torque for pulling large log bundles

• Strong dual arch reach and grapple stability

• Cab designed for comfort, visibility, and reduced noise

• Simple layout for easy daily maintenance checks

Maintenance & Common Issues:

• Frequent Maintenance Parts:

  • Grapple Cylinder Seal Kits

  • Wet Brake Discs & Components

  • Transmission & Clutch Packs

• Common Issues:

  • Hydraulic leaks at the arch pivot – resolved with updated seal kits

  • Transmission gear slipping – often due to worn clutch discs or low pressure

  • Overheating – typically caused by clogged coolers or worn fan belts

Pro Tips:

• Flush and refill hydraulic fluid at recommended intervals to prevent valve wear

• Inspect grapple bushings and replace if excessive play is detected

• Monitor transmission pressure during heavy loads to prevent gear wear

Serial Number Location:
Serial number is located on the right side of the frame near the front axle or behind the cab. Serial number prefix is DW848G followed by a 6-digit unit number.