Caterpillar

Caterpillar D7G SA Special Application

The Caterpillar D7G SA Special Application is an agricultural crawler tractor produced from 1980 to 1986. It features a Caterpillar 3306 turbocharged aftercooled 6-cylinder diesel engine with 250 hp (186.4 kW) output. The tractor has a 6-speed gear transmission with 4 reverse gears and a wet disc clutch. It is equipped with crawler drive and offers ROPS with an optional air-conditioned cab. The D7G SA has a fuel capacity of 155 gallons and a hydraulic system capacity of 24 gallons. Its dimensions include a length of 179 inches, width of 103 inches, and operating weight up to 40,700 lbs. The tractor uses 22-inch tracks with options for 24 and 26 inches. Electrical system includes a 12-volt battery and alternator charging. The D7G SA was originally priced at $166,210 in 1985 and has a bulldozer variant. It is related to the Caterpillar D8L SA model.

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ModelD7G SA

Caterpillar D7G SA Special Application tractor

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Technical Specifications

Detailed specifications and technical data for Caterpillar D7G SA Special Application

Power

Engine	250 hp (186.4 kW)
Drawbar (claimed)	200 hp (149.1 kW)

Engine

Type	turbocharged aftercooled diesel
Model	Caterpillar 3306
Power	250 hp (186.4 kW)
Cooling	liquid-cooled inline
Starter	electric
Cylinders	6-cylinder
Rated RPM	2000
Bore/Stroke	4.75x6.00 inches (121 x 152 mm)
Displacement	638 ci (10.5 L)
Oil capacity	29 qts (27.4 L)
Starter volts	24
Coolant capacity	48 qts (45.4 L)

Height

Hood	85 inches (215 cm)
ROPS	126 inches (320 cm)
Exhaust	129 inches (327 cm)
Steering wheel	89 inches (226 cm)

Tracks

Width	22 inches (55 cm), 24 inches (60 cm), 26 inches (66 cm)
Area on ground	4704 in² (3.0 m²)
Length on ground	107 inches (271 cm)

Capacity

Fuel	155 gal (586.7 L)
Hydraulic system	24 gal (90.8 L)

Variants

D7G	bulldozer

Dimensions

Gauge	78 inches (198 cm)
Width	103 inches (261 cm)
Length	179 inches (454 cm)
Shipping weight	39500 lbs (17917 kg)
Ground clearance	13.75 inches (34 cm)
Operating weight	40700 lbs (18461 kg)

Electrical

Battery volts	12
Charging system	alternator

Hydraulics

Type	open center
Valves	3
Capacity	24 gal (90.8 L)
Pressure	2250 psi (155.1 bar)
Pump flow	32 gpm (121.1 lpm)

Mechanical

ROPS	ROPS. Cab available with air-conditioning.
Drive	crawler

Production

Type	Agricultural Crawler tractor
Original price	$166,210 in 1985
Years produced	1980 - 1986

References

1	Tracteurs Caterpillar d4E, d5B, D6D, D7G Applications Speciales published in 1980
2	Special Application Tractors published in 1982, by Caterpillar
3	Implement Matching for Cat Tillage Tractors published in 1983, by Caterpillar

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