Case 850D Dozer Specs, Parts, and Serial Numbers (1980-1994)

Description:

Serial Number Location

To identify the production year and order correct parts for your Case 850D Dozer, locate the serial number:

• Stamped on the right side of the machine frame, near the cab or engine mount

• On the operator’s side firewall, typically behind the seat or near the foot pedals on the data plate

Serial numbers may begin with either numeric values or the JAK prefix depending on the production year. Always verify before ordering engine or drivetrain components.

Serial Number Reference by Year

Key Specifications

Key Features

• ✅ Cummins 6-590 or 6T-590 Engine Options – Naturally aspirated or turbocharged for consistent torque

• ✅ Power Shift Transmission – Smooth gear changes and strong drawbar pull in tough terrain

• ✅ Compact Yet Durable Frame – Ideal for site prep, finish grading, and utility construction

• ✅ Reliable Undercarriage – Compatible with a wide range of track and roller parts

• ✅ Support for Both Early & Late Serial Formats – Backed by full-service parts inventory

Maintenance & Common Issues

Routine Maintenance

• Engine Oil & Filters – Replace every 250 hours

• Transmission & Final Drive Oil – Change every 500 hours

• Cooling System Cleaning – Flush annually or semi-annually in dusty zones

• Track Chain & Roller Grease – Weekly under normal use

• Blade Linkage & Cylinder Lubrication – Daily greasing

⚠️ Common Issues & Fixes

• Transmission Slippage – Inspect clutch packs and fluid level – view power shift parts

• Hydraulic Creep on Blade – Repack cylinders or service valve block – hydraulic kits here

• Undercarriage Wear – Replace chains, idlers, and adjusters – shop track parts

• Engine Power Drops – Clean injectors or replace turbo (if equipped) – engine parts