Case 921C Wheel Loader – Parts, Specs

Description:

Serial Number Location:

For the Case 921C Wheel Loader (produced from the early 2000s through the mid-2000s), the serial number plate is located on the left-hand side of the machine, just below the cab on the front frame near the articulation point. Always confirm the serial number when ordering replacement parts—this model includes several variations in transmission and hydraulic configurations based on build year.

Key Specifications

Years Manufactured: 2001 – 2005 (approximate)

Engine Model: Cummins QSM11, 6-cylinder turbocharged diesel

Net Horsepower: 248 HP @ 2,100 rpm

Displacement: 661 cu in (10.8 L)

Transmission Type: Full powershift, 4 forward / 3 reverse

Hydraulic Pressure: 2,850 psi

Hydraulic Flow Rate: 38 gal/min

Operating Weight: Approx. 50,621 lbs

Bucket Capacity: 4.75 – 5.5 cubic yards (heaped)

Breakout Force: Approx. 50,275 lbs

Top Travel Speed: 24 mph

Dimensions (L×W×H): Approx. 28.1 ft × 9.7 ft × 11.7 ft

Performance & Design Highlights

High-Torque Cummins Power: The QSM11 engine offers consistent performance with electronic fuel control, ideal for load-and-carry or stockpiling.

Precision Powershift Transmission: Electronic control module adjusts shift points for smooth engagement under heavy loads.

Load-Sensing Hydraulics: Provides efficient power distribution between lift, tilt, and steering functions for smoother operation.

Comfortable Cab: Features include air suspension seat, ergonomic joystick-style controls, full climate control, and wide visibility.

Robust Axles and Frame: Heavy-duty center pin, high ground clearance, and standard limited-slip front differential for maximum site performance.

Routine Maintenance

• Engine Oil & Filter: Replace every 250 hours

• Fuel Filters: Replace every 250 hours

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

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

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

• Coolant System: Inspect every 250 hours; flush every 2,000 hours

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

Common Issues & Fixes

Powershift Slipping or Harsh Shifting: May indicate a faulty shift solenoid or worn clutch pack—run diagnostic on shift controller and replace affected components.

Hydraulic Lag or Lift Delay: Often caused by a clogged return filter or bypassing valve—replace filters and test main relief pressure.

Fuel System Trouble: Check for dirty or water-contaminated fuel—replace both primary and secondary filters and inspect lift pump.

Coolant Overheating: Caused by dirty radiator fins or a weak thermostat—flush system and pressure test cooling components.

Axle Noise or Vibration: Inspect planetary hubs and driveshaft u-joints—replace worn bearings or shaft splines.

Cab Display Malfunctions: Typically caused by loose grounds or corroded connectors—inspect all dash harness connections and clean grounds.