Case 850K Dozer – Parts, Specs

Description:

Serial Number Location:

For Case 850K models (manufactured from 2004 to 2009), the serial number plate is typically located on the left side of the main frame, just behind the blade lift cylinder or beneath the cab platform. Always verify the serial number when ordering parts, as early and late 850K units may have slight variations in emissions and electronic controls.

Key Specifications

Years Manufactured: 2004 – 2009

Engine Model: Case 6.7L turbocharged diesel (Tier 2 / Tier 3 compliant)

Net Horsepower: 95 HP @ 2,000 rpm

Displacement: 409 cu in (6.7 L)

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

Hydraulic Flow Rate: 23.5 gal/min

Hydraulic Pressure: 2,600 psi

Operating Weight: Approx. 20,000 – 21,000 lbs

Blade Capacity: 2.7 – 3.2 cubic yards

Top Travel Speed: 5.9 mph

Dimensions (L×W×H): Approx. 15.3 ft × 7.6 ft × 9.3 ft

Performance & Design Highlights

Hydrostatic Drive System: Infinitely variable speed control, counter-rotation capability, and simplified maneuverability make the 850K a go-to for grading, clearing, and slope work.

Tier 2/Tier 3 Engine: The 6.7L engine provides more torque with better fuel economy and lower emissions than previous models.

Advanced Electronic Controls: Easy-to-use rocker switches, joystick steering, and diagnostics make operation smoother and maintenance easier.

6-Way PAT Blade: Power-Angle-Tilt blade comes standard and allows precise material control and finish grading.

Cab Enhancements: Optional enclosed cab with HVAC, suspension seat, and improved visibility improves productivity and operator comfort.

Routine Maintenance

• Engine Oil & Filter: Change every 500 hours

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

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

• Fuel Filters: Replace every 500 hours

• Air Filters: Inspect every 250 hours; replace as needed

• Final Drive Oil: Check every 100 hours; replace every 1,000 hours

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

Common Issues & Fixes

Hydrostatic Hesitation or Surge: Typically caused by dirty charge filters or worn swash plate components—replace filters and calibrate system.

Blade Drift or Uneven Lift: Worn or leaking lift cylinder seals—rebuild or replace seals and polish the cylinder rods.

Fuel Delivery Issues: Caused by worn primer bulb, clogged filters, or air intrusion—replace lines and use high-quality fuel.

Engine Overheating: Clean radiator stack regularly; inspect fan belts and check coolant level and thermostat operation.

No Cab Display or Electrical Faults: Inspect main fuse panel, check ground connections, and reseat loose display connectors.

Track Creep or Vibration: Misaligned track chains or worn sprockets—adjust track alignment and replace undercarriage components as needed.