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Caterpillar 631G Scraper

Bowl

Heaped Capacity31 cu yds (24 m)
Max Depth of Cut17.2 in (44 cm)
Rated Payload75000 lbs (34,020 kg)
Struck Capacity21 cu yds (16 m)
Width of Cut11.6 ft (4 m)

Dimensions

Axle to Vertical Hitch Pin21.6 in (55 cm)
Height - Overall Shipping167.8 in (426 cm)
Height - Scraper Blade Maximum21.5 in (55 cm)
Height - Top of Cab12.2 ft (4 m)
Length - Overall Machine573.4 in (1,456 cm)
Overall Height14.1 ft (4 m)
Overall Length47.8 ft (15 m)
Overall Width13 ft (4 m)
Tractor Ground Clearance2.2 ft (1 m)
Wheelbase28.8 ft (9 m)
Width - Inside of Bowl134 in (340 cm)
Width - Outside Rear Tires143.2 in (364 cm)
Width - Tractor137 in (348 cm)

Engine

Tractor Engine3408E

Hydraulic System

Apron Cylinder Bore8.2 in (21 cm)
Apron Cylinder Stroke28.6 in (73 cm)
Bowl Cylinder Bore7.2 in (18 cm)
Bowl Cylinder Stroke34.4 in (87 cm)
Compensator Settings - Cushion Hitch Circuit2320 psi
Cushion Hitch Circuit9 gal/min (34 l/min)
Ejector Cylinder Bore8.3 in (21 cm)
Ejector Cylinder Stroke74 in (188 cm)
Relief Valve - Implement Circuit2030 psi
Relief Valve - Steering Circuit1987 psi
Scraper Circuit91 gal/min (344 l/min)
Secondary Steering Circuit77 gal/min (291 l/min)
Steering Circuit103 gal/min (390 l/min)

Operating Specifications

Alternator Supplied Amperage75 A
Cooling System Fluid Capacity32 gal (121 l)
Differential Fluid Capacity36 gal (136 l)
Engine Oil Fluid Capacity11.7 gal (44 l)
Fuel Capacity215.1 gal (814 l)
Hydraulic System Fluid Capacity50.2 gal (190 l)
Operating Voltage24 V V
Tire Size37.50-R35
Transmission Fluid Capacity33 gal (125 l)
Wheel Coolant Fluid Capacity - each19.8 gal (75 l)

Scraper Bowl

Apron Closure Force38250 lbs (17,350 kg)
Apron Opening79 in (201 cm)
Capacity - Struck21 cu yds (16 m)
Capacity Heaped34 cu yds (26 m)
Cutting Edge Thickness1.7 in (4 cm)
Depth of Spread - Maximum18.9 in (48 cm)
Ground Clearance - Maximum21.5 in (55 cm)
Hyd. Penetration Force - 621G57375 lbs (26,025 kg)
Rated Load75000 lbs (34,020 kg)
Scraper Capacity - Heaped31 cu yds (24 m)

Service Refill Capacities - Scraper

Wheel Coolant - Each19.8 gal (75 l)

Service Refill Capacities - Tractor

Cooling System32 gal (121 l)
Crankcase11.7 gal (44 l)
Differential36 gal (136 l)
Final Drive - Each7 gal (27 l)
Hydraulic Reservoir50 gal (189 l)
Transmission33 gal (125 l)
Wheel Coolant - Each19.5 gal (74 l)
Windshield Washer6 gal (23 l)

Standards

BrakesMeets ISO 3450: 1996 standard

Steering System

Ground-Driven Secondary Steering System51 gal/min (193 l/min)
Hydraulic Output96.2 gal/min (364 l/min)
Steering Angle - Left85 °
Steering Angle - Right90 °
Width - 180 degrees Turn40.1 ft (12 m)

Tractor Engine

Caterpillar Net Power490 hp (365 kw)
Displacement1099 cu in (0 m)
EEC 80/1269490 hp (365 kw)
Flywheel Power - Tractor/Scraper373 kW (500)
Gross Power515 hp (384 kw)
Gross Power - Gears 3-8515 hp (384 kw)
ISO 9249490 hp (365 kw)
MakeCaterpillar
Model3408E
Net Power - Gears 1-2450 hp (336 kw)
Net Power - Gears 3-8490 hp (365 kw)
Net Power - Tractor/Scraper336 kW (450)
SAE J1349490 hp (365 kw)

Transmission

1 Forward2.9 mph (5 kph)
2 Forward5.2 mph (8 kph)
3 Forward7.4 mph (12 kph)
4 Forward10 mph (16 kph)
5 Forward13.4 mph (22 kph)
6 Forward18.2 mph (29 kph)
7 Forward24.5 mph (39 kph)
8 Forward33.2 mph (53 kph)
Max Speed Forward33.2 mph (53 kph)
Max Speed Reverse6.2 mph (10 kph)
Number of Forward Gears8
Number of Reverse Gears1
Reverse6.2 mph (10 kph)
Top Speed - Loaded33 mph (53 kph)
Transmission Type8-speed automatic Powershift with Electronic Control

Weights

Front Axel - loaded94054 lbs (42,663 kg)
Front Axle - empty68647.5 lbs (31,138 kg)
Operating Weight102460 lbs (46,476 kg)
Rear Axle - empty33812.3 lbs (15,337 kg)
Rear Axle - loaded83406 lbs (37,833 kg)
Total Operating - empty102459.8 lbs (46,476 kg)
Total Operating - Loaded177460 lbs (80,495 kg)

Weights - Standard, Tandem

Front Axle68648 lbs (31,139 kg)
Front Axle Weight - Loaded94054 lbs (42,663 kg)
Rear Axle33812 lbs (15,337 kg)
Rear Axle - Weight - Loaded83406 lbs (37,833 kg)
Scraper Shipping54004 lbs (24,496 kg)
Total Operating - Empty102460 lbs (46,476 kg)
Total Operating - Loaded177460 lbs (80,495 kg)
Total Shipping100006 lbs (45,362 kg)
Tractor Shipping46002 lbs (20,866 kg)
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    39.04690 \\ -77.49030 \\ 50.243.58.82 \\ Ashburn \\ VA