Case 821 Wheel Loader – Parts, Specs

Description:

Serial Number Location:

For Case 821 Wheel Loaders (covering models 821, 821B, 821C, 821E, 821F, and 821G), the serial number plate is typically found on the left side of the machine frame, just behind the front axle or near the articulation joint. Always confirm the serial number when ordering parts, as multiple engine tiers and transmission changes exist across models.

Key Specifications

Years Manufactured: Early 1990s – Present (varies by series)

Engine Model (Original 821): Cummins 6CT8.3 Turbo Diesel

Net Horsepower: 185 – 230 HP (varies by generation)

Displacement: 8.3 L on early models, 6.7 L on later Tier 4 Final units

Transmission Type: Powershift with torque converter, 4-speed or 5-speed depending on series

Hydraulic Flow Rate: 42 – 45 gal/min

Hydraulic Pressure: Up to 3,200 psi

Operating Weight: 33,000 – 39,000 lbs

Bucket Capacity: 3.25 – 4.25 cubic yards

Breakout Force: 32,000 – 38,000 lbs

Top Travel Speed: Up to 24.5 mph

Dimensions (L×W×H): Approx. 28.5 ft × 9 ft × 11.2 ft

Performance & Design Highlights

Heavy-Duty Loading Power: Designed for high-production operations including quarry work, site prep, and bulk material handling.

Tier-Based Engine Efficiency: Earlier models used reliable Cummins powerplants, while later 821F and 821G models feature FPT Tier 4 Final engines with SCR (Selective Catalytic Reduction) and no DPF.

Refined Transmission Control: Powershift and optional 5-speed with lock-up torque converter provide fast cycle times and better roading performance.

Advanced Cooling Design: Later models include mid-mounted cooling modules for easier maintenance and consistent airflow in dusty environments.

Operator Comfort & Visibility: Modern enclosed cabs include electro-hydraulic joysticks, wide-view glass, and ride control for reduced material loss.

Routine Maintenance

• Engine Oil & Filter: Change every 500 hours

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

• Transmission Fluid: Change every 1,000 hours

• Fuel Filters: Replace every 500 hours

• Air Filters: Inspect every 250 hours; replace when restricted

• Axle & Final Drive Oil: Inspect every 500 hours; replace every 1,000 hours

• Cooling System: Clean radiator and replace coolant every 2,000 hours or 2 years

Common Issues & Fixes

Transmission Delay or Harsh Shifts: Caused by worn clutch packs or contaminated fluid—flush system and calibrate shift points.

Hydraulic Lift Lag: Often traced to worn lift cylinder seals or weak main relief valve—reseal cylinders and test hydraulic pressure.

Overheating in Heavy Load Conditions: Clean radiator stack and inspect fan clutch; replace thermostat if engine runs hot under moderate loads.

Brake Fade or Noise: Check for worn brake discs or contaminated hydraulic brake fluid; service wet brake packs as needed.

Electronic Display Glitches (F/G Series): Inspect connectors near ECM and display—clean terminals and reseat harness plugs.

DEF System Warnings (Tier 4 Final): Use only ISO-certified DEF and clean DEF tank screen to avoid sensor and injector faults.