Case 850H Dozer – Parts, Specs

Description:

Serial Number Location:

For Case 850H models (manufactured from 2000 to 2003), the serial number plate is typically mounted on the left-hand side of the main frame, just behind the blade lift cylinder or beneath the front step. Always verify the serial number before ordering parts—this model introduced electronic transmission control and key hydraulic upgrades over the 850G.

Key Specifications

Years Manufactured: 2000 – 2003

Engine Model: Case 6T-590, turbocharged 6-cylinder diesel

Net Horsepower: 95 HP @ 2,000 rpm

Displacement: 359 cu in (5.9 L)

Transmission Type: Hydrostatic drive with electronically controlled dual-path pumps

Hydraulic Flow Rate: Approx. 23.5 gal/min

Hydraulic Pressure: 2,500 psi

Operating Weight: Approx. 19,000 – 20,000 lbs

Blade Capacity: 2.7 – 3.2 cubic yards

Top Travel Speed: 5.9 mph

Dimensions (L×W×H): Approx. 15.2 ft × 7.5 ft × 9.3 ft

Performance & Design Highlights

Hydrostatic Transmission: Delivers infinitely variable speed and smooth directional control without gear shifting, making the 850H excellent for fine grading and slope work.

Turbocharged Power: The 6T-590 provides increased torque and better performance under heavy load compared to previous models.

Electronic Controls: Integrated diagnostics, push-button direction change, and cruise modes improve operator control and reduce fatigue.

Blade Versatility: Standard 6-way PAT (Power-Angle-Tilt) blade allows flexible dozing in confined or angled workspaces.

Comfort Cab Option: Optional enclosed cab with HVAC, suspension seat, and sound insulation enhances comfort during long workdays.

Routine Maintenance

• Engine Oil & Filter: Change every 250 hours

• Hydraulic Fluid & Filters: Replace every 1,000 hours

• Hydrostatic Fluid: Inspect every 250 hours; change every 1,000 hours

• Fuel Filters: Replace every 250 hours

• Air Filters: Inspect every 100 hours; replace when restricted

• Cooling System: Flush every 2,000 hours or 2 years

• Track Tension: Inspect and adjust daily with grease tensioner

Common Issues & Fixes

Hydrostatic Lag or Surge: Usually due to dirty charge filters or worn pump components—replace filters and check swash plate operation.

Blade Drift or Sag: Caused by worn cylinder seals—rebuild the lift or tilt cylinders using a Case-compatible seal kit.

Hard Cold Starts: Check glow plugs and fuel heater—ensure diesel is clean and lines are free of air.

Noisy Travel or Creep: Often a result of worn track rollers or misaligned sprockets—inspect and replace undercarriage components.

Cab Display Faults (if equipped): Inspect wiring behind dash panel and reset diagnostic system if the display flickers or goes blank.

Brake or Parking Lock Malfunctions: Check electronic solenoids and cable linkages—adjust or replace as needed.