John Deere 85 P‑Tier Excavator – Parts, Specs

Description:

Serial Number Location

The serial number plate is located on the right-hand side of the upper frame, beneath the cab entry threshold or adjacent to the operator’s seat. Always verify before ordering parts to ensure correct fitment.

Key Specifications

Model Years: 2021 – Present
Engine: John Deere P‑Tier, 4-cylinder diesel, Tier 4 Final
Net Power: 67 hp (50 kW) @ 2,200 rpm
Operating Weight: 19,600 lb (8,890 kg)
Fuel Tank Capacity: 31 gallons
Hydraulic System Capacity: 30 gallons
Hydraulic Tank Capacity: 14 gallons
Hydraulic Pump Flow: 74 gpm main + 12 gpm auxiliary
Hydraulic Pressure: Up to 3,900 psi
Travel Speed: 2.5 mph (low), 4.4 mph (high)
Swing Speed: 9.0 rpm
Tail Swing: Reduced tail swing
Ground Pressure: Approx. 5.7 psi

Dimensions

Overall Length: 24 ft 8 in
Width: 7 ft 7 in
Transport Height: 9 ft 4 in
Ground Clearance: 14 in
Tail Swing Radius: 3 ft 8 in
Track Width: 18 in
Track Gauge: 5 ft 10 in

Working Range

Max Digging Depth: 12 ft 10 in
Max Reach at Ground: 22 ft 4 in
Max Cutting Height: 20 ft 6 in
Max Dump Height: 14 ft 4 in

Performance & Design Highlights

• Reduced-tail-swing layout for enhanced maneuverability in tight spaces

• Dual travel speeds with auto-shift for efficient driving and grading

• Standard rear-view camera and LED work lights in cab-equipped units

• Integral dozer blade for stability and backfilling tasks

• Quick-coupler ready hydraulic connections for fast attachment changes

• Dual cooling circuits with side-by-side radiators for easy cleaning

• Spacious, climate-controlled cab with ergonomic seating and joystick controls

Routine Maintenance

• Engine Oil & Filter: Every 250 hours

• Fuel Filter: Every 500 hours

• Hydraulic Oil: Replace every 3,000 hours

• Hydraulic Filter: Replace every 1,000 hours

• Cooling System: Clean radiator and cooler fins every 250 hours

• Daily Checks: Grease swing and boom joints, inspect track tension, monitor fluid levels, examine hoses and connections

Common Issues & Fixes

• Hydraulic Hose and Quick-Coupler Wear: Inspect daily; replace worn seals or fittings promptly

• Track Tension Loss: Adjust via grease fitting to prevent track derailment and uneven wear

• Cooling System Blockage: Dust build-up may restrict airflow—clean fins daily in dusty environments

• Slow Boom Travel or Response: Typically caused by dirty filters or insufficient hydraulic fluid

• Joystick Drift or Insensitive Controls: May require recalibration or lubrication at pivot points