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Case 621D XT Specifications

The Case 621D XT wheel loader is powered by Case 6BT-590 6-cylinder turbocharged liquid-cooled diesel engine with a rated power of 134 hp (99.3 kW) at 2200 rpm. The Case 621D XT is equipped with a 4x3 powershift transmission, power steering system, hydraulic wet disc brakes, and 20.5x25 standard tires. The hydraulic system has a pump with fluid flow rate of 45.2 gpm (171 lpm). The hydraulic pressure is 3600 psi (248 bar). The wheel loader has a rated operating capacity of 7375 lbs (3345 kg) and tipping load of 14750 lbs (6690 kg). The max lift height is 156.9 inches (3985 mm) to hinge pin, and boom breakout force is 26055 lbs (11820 kg).

Engine Model .................... Case 6BT-590
Engine Type .................... 4-Stroke direct injection liquid-cooled diesel
Number of Cylinders .................... 6
Displacement, cu in (L) .................... 359 (5.90)
Engine Bore, in (mm) .................... 4.02 (102.0)
Engine Stroke, in (mm) .................... 4.72 (120.0)
Aspiration Type .................... Turbocharged
Rated Engine Power, hp (kW) .................... 134.0 (99.3)
Rated Engine Speed, rpm .................... 2200
Low Idle Speed, rpm .................... 920-980
High Idle Speed, rpm .................... 2305-2385
Maximum Torque, Nm (ft-lb) .................... 598 (441)
Torque Speed, rpm.................... 1400
Compression Ratio .................... 17.5:1
Firing Order .................... 1-5-3-6-2-4
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) .................... 16.0 (15.1)
Coolant Capacity, qts (L) .................... 20.2 (19.2)
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 .................... 2.66:1
Oil Capacity, gal (L) .................... 2.0 (7.6)
Maximum Forward Speed, mph (kph) .................... 23.6 (38.1)
Maximum Reverse Speed, mph (kph) .................... 15.4 (24.8)

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) .................... 20.5x25
Rear Tire Size (Std) .................... 20.5x25
Front Tire Size (Opt) .................... 17.5x25-12
Rear Tire Size (Opt) .................... 17.5x25-12

Hydraulic System Type .................... Closed center
Hydraulic Pump Type .................... Variable displacement piston
Pump Capacity, gpm (Lpm) .................... 45.2 (171.0)
System Pressure, psi (Bar) .................... 3600 (248)
Hydraulic Reservoir Capacity, gal (L) .................... 15.0 (56.8)
Hydraulic System Capacity, gal (L) .................... 30.0 (113.6)

Rated Operating Capacity (Straight), lbs (kg) .................... 8935 (4055)
Rated Operating Capacity (Full Turn), lbs (kg) .................... 7375 (3345)
Tipping Load (Straight), lbs (kg) .................... 17870 (8110)
Tipping Load (Full Turn), lbs (kg) .................... 14750 (6690)
Lift Capacity, lbs (kg) .................... 12820 (5815)
Breakout Force, lbs (kg) .................... 26055 (11820)

Maximum Operating Height .................... 204.4 (5190)
Maximum Lift Height To Hinge Pin, in (mm) .................... 156.9 (3985)
Height To Top Of Cab, in (mm) .................... 128.3 (3260)
Length With Bucket On Ground, in (mm) .................... 283.5 (7200)
Width (Tread Center), in (mm) .................... 72.8 (1850)
Width (Over Tires), in (mm) .................... 95.4 (2425)
Wheel Base, in (mm) .................... 114.2 (2900)
Ground Clearance, in (mm) .................... 18.7 (475)
Departure Angle, deg .................... 28
Articulation Angle, deg .................... 40
Bucket Width, in (mm) .................... 102 (2590)
Bucket Capacity, cu.ft (m3) .................... 69.2 (1.96)
Digging Depth, in (mm) .................... 3.5 (89)
Rollback Angle At Ground, deg .................... 41
Rollback Angle At Full Height, deg .................... 55
Dump Angle At Full Height, deg .................... 50
Clearance With Bucket Dumped, in (mm) .................... 115.9 (2945)
Reach At Full Height, in (mm) .................... 45.3 (1150)
Turning Radius (w/Bucket), in (mm) .................... 204.5 (5195)
Operating Weight, lbs (kg) .................... 27600 (12520)

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Wheel Loaders, Skid Steers, and Compact Track Loaders