Case 921B Wheel Loader – Parts, Specs

Description:

Serial Number Location:

For the Case 921B Wheel Loader (produced from the mid-1990s through the late 1990s), the serial number plate is typically located on the left side of the machine near the articulation joint—on the front frame below the cab. Always verify the serial number when ordering parts, as engine and hydraulic configurations may vary slightly by production year.

Key Specifications

Years Manufactured: Approx. 1994 – 1998

Engine Model: Cummins M11-C, turbocharged 6-cylinder diesel

Net Horsepower: 260 HP @ 2,100 rpm

Displacement: 661 cu in (10.8 L)

Transmission Type: Full powershift, 4 forward / 3 reverse

Hydraulic System Pressure: 2,850 psi

Hydraulic Flow Rate: 38 gal/min

Operating Weight: Approx. 50,000 – 52,000 lbs

Bucket Capacity: 4.75 – 5.5 cubic yards

Breakout Force: 48,000 lbs (approximate)

Top Travel Speed: 24 mph

Dimensions (L×W×H): Approx. 28 ft × 9.7 ft × 11.7 ft

Performance & Design Highlights

Cummins M11 Power: Delivers strong low-end torque and consistent performance under heavy load cycles.

Heavy-Duty Axles: Limited-slip differentials improve traction in poor underfoot conditions.

Spacious Cab: Features include full glass coverage, tilt steering, analog gauges, and pilot assist hydraulics.

Reinforced Loader Frame: Dual lift arms and cross-frame support allow consistent performance with large heaped loads.

Ease of Service: Ground-level access to filters, fluids, and grease points improves daily maintenance efficiency.

Routine Maintenance

• Engine Oil & Filter: Replace every 250 hours

• Transmission Fluid & Filter: Replace every 1,000 hours

• Hydraulic Oil & Filters: Change every 1,000 hours

• Fuel Filters: Replace every 250 hours

• Air Filters: Inspect every 100 hours; replace as needed

• Differential/Final Drive Oil: Change every 1,000 hours

• Cooling System: Inspect and flush every 2,000 hours

Common Issues & Fixes

Hydraulic Lift Slow or Jerky: Check main control valve for bypass leakage—replace lift spool seals if worn.

Transmission Hesitation or Harsh Shifting: May indicate solenoid or clutch pack wear—perform clutch calibration and inspect valve body.

Cab Electrical Faults: Loose ground wires under dash are common—clean terminals and inspect fuse connections.

Overheating Under Load: Clogged radiator fins or low coolant—pressure test system and clean cooling module.

Wheel Slippage in Muddy Conditions: Inspect differential lock engagement and replace faulty switch or sensor if needed.

Brake Pedal Fade: Worn internal brake seals—rebuild brake cylinders and flush fluid.