CAT 637G Motor Scraper

Dimensions

Overall Length 47.78 ft in (14565 mm)
Overall Width 12.92 ft in (3938 mm)
Overall Height 14.07 ft in (4286 mm)
Wheelbase 28.77 ft in (8769 mm)
Tractor Ground Clearance 2.19 ft in (665 mm)
Height To Top Of Cab 12.19 ft in (3715 mm)
Height – Scraper Blade Maximum 21.5 in (546.1 mm)
Height – Top Of Cab 12.2 ft in (0.31 m)
Height – Top Of Scraper 13.71 ft in (4.18 m)
Length – Overall 50.75 ft in (15.47 m)
Length – Overall Machine 573.4 in (14564.36 mm)
Rear Axle – Rear Of Machine 95.75 in (2432.06 mm)
Tread – Scraper 8.07 ft in (2.46 m)
Tread – Tractor 8.07 ft in (2.46 m)
Wheel Base 28.77 ft in (0.74 m)
Width – Inside Of Bowl 134 in (3403.6 mm)
Width – Outside Bowl – Shipping Width 154 in (3911.6 mm)
Width – Outside Rear Tires 143.2 in (3637.28 mm)
Width – Overall 12.93 ft in (3.95 m)
Width – Overall Machine 155 in (3937 mm)
Width – Rear Tire Center Lines 97 in (2463.81 mm)
Axle To Vertical Hitch Pin 21.6 in (548.64 mm)
Width – Tractor 137 in (3479.8 mm)
Bail Length – Maximum (Push-Pull) 195.3 in (4960.62 mm)
Extended Push Block (Push-Pull) 108 in (2743.2 mm)
Front Of Tractor To Front Axle 135.25 in (3435.35 mm)
Ground Clearance – Tractor 26.2 in (665.48 mm)
Height – Overall Shipping 168.75 in (4286.25 mm)

Tractor Engine

Make CAT
Model 3408E
Gross Power 515 hp (384 kw)
Displacement 1099 cu in (18.1 L)

Engine Details

Tractor Engine Cat C18 with ACERT Technology
Flywheel Power – Tractor/Scraper 373 kw (500 hp) / 211 kW (283 hp)

Tractor Engine

Flywheel Power – Tractor/Scraper 336 kW (450 hp) / 186 kW (249 hp)
Net Power – Gears 1-2 450 hp (335.6 kw)
Gross Power – Gears 1-2 480 hp (358 kw)
Bore 5.4 in (137.2 mm)
Stroke 6 in (152.4 mm)
Net Power – Gears 3-8 485 hp (361.7 kw)
Gross Power – Gears 3-8 519 hp (387.1 kw)

Engine Details

Scraper Engine Cat C9 with ACERT Technology

Scraper Engine

Make CAT
Model 3306
Gross Power 270 hp (201 kw)
Displacement 538 cu in (8.9 L)
Bore 4.5 in (112.1 mm)
Stroke 5.9 in (149.1 mm)
Net Power – Gear 1 249 hp (185.7 kw)
Net Power – Gears 2-4 274 hp (204.4 kw)
Gross Power – Gear 1 274 hp (204.4 kw)
Gross Power – Gears 2-4 299 hp (223 kw)

Operational Specs

Fuel Tank Capacity 335 gal (1268 L)
Cooling System Fluid Capacity 52 gal (202 L)
Engine Oil Fluid Capacity 18.9 gal (72 L)
Transmission Fluid Capacity 45.7 gal (176 L)
Differential Fluid Capacity 40.5 gal (153 L)
Hydraulic System Fluid Capacity 50 gal (190 L)
Wheel Coolant Fluid Capacity – Each 39 gal (150 L)
Operating Voltage 24 V
Alternator Supplied Amperage 75 amps
Tire Size 37.50-R35

Transmission

Number Of Forward Gears 8
Number Of Reverse Gears 1
Max Speed Forward 34.1 mph (54.9 km/h)
Max Speed Reverse 6.2 mph (9.9 km/h)
Reverse 6.2 mile/h

Steering

Width – 180 Degrees Turn 40 ft in (12.2 m)
Steering Angle – Right 90 degrees
Steering Angle – Left 85 degrees
Hydraulic Output 100 gal/min

Transmission

1 Forward 3.4 mph (5.5 km/h)
2 Forward 6.2 mph (10 km/h)
3 Forward 7.6 mph (12.3 km/h)
4 Forward 10.3 mph (16.6 km/h)
5 Forward 13.8 mph (22.3 km/h)
6 Forward 18.7 mph (30.1 km/h)
7 Forward 25.2 mph (40.6 km/h)
8 Forward 34.1 mph (54.9 km/h)
Top Speed – Loaded 33 mph (53.2 km/h)

Steering

Width – 180 Degrees Turn – Right 40.1 ft in (12.3 m)

Weights

Total Operating – Empty 114745 lb (52047 kg)
Operating Weight 114743.9 lb (52047 kg)
Front Axle – Empty 67700 %
Rear Axle – Empty 47045 %
Total Operating – Loaded 189745 lb (86067 kg)
Front Axel – Loaded 92975 lb (42173 kg)
Rear Axle – Loaded 96770 %
Operating Weight – Loaded – Approximate 194909 lb (88409.3 kg)
Operating Weight – Empty – Approximate 118909 lb (53936.3 kg)

Bowl

Rated Payload 75000 lb (34020 kg)
Heaped Capacity 31 yd3 (23.7 m3)
Struck Capacity 21 yd3 (16.1 m3)
Max Depth Of Cut 17.2 in (437 mm)
Width Of Cut 11.6 ft in (3512 mm)

Operating Specifications

Top Speed – Loaded 33 mph (53.2 km/h)
Rated Load 76000 lb (34473.1 kg)
Scraper Capacity – Struck 41 yd3 (31.4 m3)
Scraper Capacity – Heaped 50 yd3 (38.3 m3)
180 Degrees Curb-To-Curb Turning Width 45 ft in (13.8 m)

Standards

Brakes Meets ISO
Rops/Fops Meets SAE, ISO
Cab Meets ANSI, SAE

Hydraulics

Bowl Cylinder Bore 7.3 in (184.2 mm)
Bowl Cylinder Stroke 34.4 in (873.8 mm)
Steering Circuit 100 gal/min
Scraper Circuit 91 gal/min
Cushion Hitch Circuit 9 gal/min
Relief Valve – Steering Circuit 1987 psi
Relief Valve – Implement Circuit 2030 psi
Compensator Settings – Cushion Hitch Circuit 2320 psi
Ejector Cylinder Bore 8.3 in (210.9 mm)
Ejector Cylinder Stroke 74 in (1879.6 mm)
Secondary Steering Circuit 100 gal/min
Apron Cylinder Bore 8.3 in (210.9 mm)
Apron Cylinder Stroke 28.6 in (726.5 mm)

Scraper Bowl

Width – Cut – To Router Bits 138.3 in (3512.9 mm)
Rated Load 82260 lb (37312.6 kg)
Capacity – Struck 24 yd3 (18.4 m3)
Depth Of Cut – Maximum 17.2 in (436.9 mm)
Ground Clearance – Maximum 21.5 in (546.1 mm)
Cutting Edge Thickness 1.2 in (28.5 mm)
Depth Of Spread – Maximum 18.9 in (480.1 mm)
Scraper Capacity – Heaped 34 yd3 (26 m3)
Hyd. Penetration Force – 621g 81000 lb (36741 kg)
Apron Closure Force 38250 lb (17350 kg)
Apron Opening 79 in (2006.6 mm)
Hyd. Penetration Force – 637g 81000 lb (36741 kg)

Service Refill Capacities – Scraper

Transmission 19 gal (72 L)
Differential 3.2 gal (12.2 L)
Final Drive – Each 5 gal (19 L)
Cooling System 20 gal (75.8 L)
Crankcase 7.9 gal (30 L)
Wheel Coolant – Each 19.8 gal (75 L)
Fuel Tank – 637g 335 gal (1268.2 L)

Service Refill Capacities – Tractor

Transmission 29 gal (109.8 L)
Differential 39 gal (147.7 L)
Final Drive – Each 6.1 gal (23.1 L)
Cooling System 29 gal (109.8 L)
Hydraulic Reservoir 50.2 gal (190.1 L)
Crankcase 11.9 gal (45.1 L)
Wheel Coolant – Each 19.8 gal (75 L)
Windshield Washer 1.5 gal (5.7 L)
Fuel Tank – 637g 335 gal (1268.2 L)

Weights – Standard, Tandem

Total Shipping 112760 lb (51147.1 kg)
Tractor Shipping 66529 lb (30177.1 kg)
Scraper Shipping 46231 lb (20970.1 kg)
Total Operating – Empty 114744 lb (52047.1 kg)
Front Axle 67700 lb (30708.3 kg)
Rear Axle 47044 lb (21338.9 kg)
Total Operating – Loaded 196944 lb (89332.4 kg)
Front Axle Weight – Loaded 96503 lb (43773.1 kg)
Rear Axle – Weight – Loaded 100441 lb (45559.3 kg)

Weights – Push-Pull

Total Shipping 116100 lb (52662.1 kg)
Tractor Shipping 68499 lb (31070.7 kg)
Scraper Shipping 47601 lb (21591.5 kg)
Total Operating – Empty 118084 lb (53562.1 kg)
Front Axle 69670 lb (31601.8 kg)
Rear Axle 48414 lb (21960.3 kg)
Total Operating – Loaded 200284 lb (90847.4 kg)
Front Axle – Loaded 98139 lb (44515.2 kg)
Rear Axle – Loaded 102145 lb (46332.2 kg)

Transmission – 637g

1 Forward 3.4 mph (5.5 km/h)
2 Forward 6.2 mph (10 km/h)
3 Forward 7.6 mph (12.3 km/h)
4 Forward 10.3 mph (16.6 km/h)
5 Forward 13.8 mph (22.3 km/h)
6 Forward 18.7 mph (30.1 km/h)
Reverse 6.2 mph (10 km/h)
7 Forward 25.2 mph (40.6 km/h)
8 Forward 34.1 mph (54.9 km/h)
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