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  Wheel Loaders

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  • Case 521E
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Case 521D XT Specifications

The Case 521D XT wheel loader is powered by Case 4TA-390 4-cylinder direct injection turbocharged diesel engine with a rated power of 110 hp (82 kW) at 2000 rpm. The Case 521D XT is equipped with a 4x3 powershift transmission, power steering system, hydraulic wet disc brakes, and 17.5x25 standard tires. The hydraulic system has a pump with fluid flow rate of 35.4 gpm (134 lpm). The hydraulic pressure is 2755 psi (190 bar). The wheel loader has a rated operating capacity of 5860 lbs (2655 kg) and tipping load of 11715 lbs (5313 kg). The maximum lift height is 148.4" (3770 mm) to hinge pin, and breakout force is 23190 lbs (10520 kg).

Engine Model .................... Case 4TA-390
Engine Type .................... 4-Stroke direct injection liquid-cooled diesel
Number of Cylinders .................... 4
Displacement, cu in (L) .................... 238 (3.90)
Engine Bore, in (mm) .................... 4.02 (102.0)
Engine Stroke, in (mm) .................... 4.72 (120.0)
Aspiration Type .................... Turbocharged
Rated Engine Power, hp (kW) .................... 110.0 (82.0)
Rated Engine Speed, rpm .................... 2000
Low Idle Speed, rpm .................... 1020-1080
High Idle Speed, rpm .................... 2220-2280
Maximum Torque, Nm (ft-lb) .................... 468 (345)
Torque Speed, rpm.................... 1400
Compression Ratio .................... 17.0:1
Firing Order .................... 1-3-4-2
Fuel System .................... Injection pump
Fuel Filter Type .................... Full flow spin-on cartridge
Governor Type .................... Mechanical
Lubricating System .................... Positive pressure
Cooling System .................... Liquid-cooled
Air Cleaner Type .................... Dry element
Fuel Tank Capacity, gal (L) .................... 50.0 (189.0)
Oil Capacity, qts (L) .................... 12.0 (11.3)
Coolant Capacity, qts (L) .................... 19.1 (18.2)
Electrical System Rating, Volts .................... 12
Charging System .................... Alternator
Alternator Rating, Amps .................... 45

Transmission Type .................... Powershift
Gearbox Type .................... 4F/3R
Number of Forward Gears .................... 4
Number of Reverse Gears .................... 3
Torque Converter Type .................... Single stage
Torque Converter Ratio .................... 2.55:1
Oil Capacity, gal (L) .................... 2.0 (7.6)
Maximum Forward Speed, mph (kph) .................... 24.1 (38.8)
Maximum Reverse Speed, mph (kph) .................... 15.6 (25.1)

Drive System Type .................... Four-wheel drive (4WD)
Steering Configuration .................... Articulated frame
Steering System .................... Hydrostatic power
Service Brakes Type .................... Hydraulic wet disc
Front Tire Size (Std) .................... 17.5x25
Rear Tire Size (Std) .................... 17.5x25
Front Tire Size (Opt) .................... 15.5x25
Rear Tire Size (Opt) .................... 15.5x25

Hydraulic System Type .................... Closed center
Hydraulic Pump Type .................... Variable displacement piston
Pump Capacity, gpm (Lpm) .................... 35.4 (134.0)
System Pressure, psi (Bar) .................... 2755 (190)
Hydraulic Reservoir Capacity, gal (L) .................... 15.0 (56.8)
Hydraulic System Capacity, gal (L) .................... 30.0 (113.6)

Rated Operating Capacity (Straight), lbs (kg) .................... 7030 (3190)
Rated Operating Capacity (Full Turn), lbs (kg) .................... 5860 (2655)
Tipping Load (Straight), lbs (kg) .................... 14060 (6380)
Tipping Load (Full Turn), lbs (kg) .................... 11715 (5313)
Lift Capacity, lbs (kg) .................... 11765 (5335)
Breakout Force, lbs (kg) .................... 23190 (10520)

Maximum Operating Height .................... 194.5 (4940 )
Maximum Lift Height To Hinge Pin, in (mm) .................... 148.4 (3770)
Height To Top Of Cab, in (mm) .................... 124.9 (3175)
Length With Bucket On Ground, in (mm) .................... 270 (6855)
Width (Tread Center), in (mm) .................... 72.8 (1850)
Width (Over Tires), in (mm) .................... 92.1 (2340)
Wheel Base, in (mm) .................... 108.3 (2750)
Ground Clearance, in (mm) .................... 14.9 (375)
Departure Angle, deg .................... 34
Articulation Angle, deg .................... 40
Bucket Width, in (mm) .................... 97 (2460)
Bucket Capacity, cu.ft (m3) .................... 52.8 (1.50)
Digging Depth, in (mm) .................... 3.1 (77)
Rollback Angle At Ground, deg .................... 40
Rollback Angle At Full Height, deg .................... 54
Dump Angle At Full Height, deg .................... 50
Clearance With Bucket Dumped, in (mm) .................... 113 (2870)
Reach At Full Height, in (mm) .................... 54.5 (1385)
Turning Radius (w/Bucket), in (mm) .................... 194.8 (4945)
Operating Weight, lbs (kg) .................... 21670 (9830)

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Wheel Loaders, Skid Steers, and Compact Track Loaders