Komatsu D21A-3 Dozer

Contents

Dimensions
Undercarriage
Engine Details
Operational Specs
Transmission
Standard Blade

Dimensions

Length W/ Blade	11.32 ft in (3450 mm)
Width Over Tracks	5.06 ft in (1540 mm)
Height To Top Of Cab	6.85 ft in (2085 mm)
Length Of Track On Ground	5.5 ft in (1675 mm)
Ground Clearance	1.02 ft in (310 mm)
Length W/O Blade	8.09 ft in (2465 mm)

Undercarriage

Track Gauge	3.91 ft in (1190 mm)
Standard Shoe Size	11.82 in (300 mm)
Number Of Track Rollers Per Side	5
Number Of Shoes Per Side	37
Ground Pressure	4.12 psi (28.41 kPa)
Track Pitch	5.32 in (135 mm)

Engine Details

Number Of Cylinders	4
Engine Make	Komatsu
Engine Model	4D92-1
Gross Power	37 hp (27.6 kw)
Power Measured @	2450 rpm
Displacement	159 cu in (2.7 L)

Operational Specs

Operating Weight	7561.9 lb (3430 kg)
Fuel Tank Capacity	15.9 gal (60 L)
Cooling System Fluid Capacity	3.7 gal (14 L)

Transmission

Transmission Type	HS
Number Of Forward Gears	3
Number Of Reverse Gears	3
Max Speed – Forward	4.3 mph (6.9 km/h)
Max Speed – Reverse	4 mph (6.4 km/h)

Standard Blade

Width	7.6 ft in (2300 mm)
Height	22.3 in (565 mm)
Capacity	1 yd3 (0.8 m3)
Cutting Depth	12.6 in (320 mm)

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