CAT 637E Series II Motor Scraper


Dimensions

Overall Length 47.77 ft in (14560 mm)
Overall Width 12.93 ft in (3940 mm)
Overall Height 14.08 ft in (4290 mm)
Wheelbase 28.78 ft in (8770 mm)
Height – Top Of Cab 12.19 ft in (0.31 m)
Length – Overall Machine 573.5 in (14566.9 mm)
Rear Axle – Rear Of Machine 95.75 in (2432.06 mm)
Wheel Base 28.78 ft in (0.74 m)
Width – Inside Of Bowl 134 in (3403.6 mm)
Width – Outside Rear Tires 143 in (3632.2 mm)
Width – Overall Machine 155 in (3937 mm)
Width – Rear Tire Center Lines 97 in (2463.81 mm)
Bail Length – Maximum (Push-Pull) 76 in (1930.4 mm)
Width – Tractor 137 in (3479.8 mm)
Front Of Tractor To Front Axle 132.25 in (3359.15 mm)
Height – Overall Shipping 168.75 in (4286.25 mm)
Height – Scraper Blade Maximum 21.5 in (546.1 mm)

Fuel Tank

Fuel Tank Capacity Scraper 335 gal (1268.2 L)

Tractor Engine

Model 3408TA
Gross Power 490 hp (365.4 kw)
Net Power 450 hp (335.6 kw)
Displacement 1099 cu in (18.1 L)

Engine Details

Tractor Engine Cat 3408E
Flywheel Power – Tractor/Scraper 365 kW (490 hp)/186 kW (250 hp)

Tractor Engine

Net Power – Gears 1-2 450 hp (335.6 kw)
Gross Power – Gears 1-2 475 hp (354.3 kw)
CAT Net Power 490 hp (365.4 kw)
Iso 9249 490 hp (365.4 kw)
Eec 80/1269 490 hp (365.4 kw)
Sae J1349 485 hp (361.7 kw)
Bore 5.4 in (137.2 mm)
Stroke 6 in (152.4 mm)
Net Power – Gears 3-8 490 hp (365.4 kw)
Gross Power – Gears 3-8 515 hp (384.1 kw)

Engine Details

Scraper Engine 3306
Gross Power Tractor Gears 1-2 475 hp (354.3 kw)
Gross Power Tractor Gears 3-8 515 hp (384.1 kw)
Gross Power Tractor 475 hp (354.3 kw)
Gross Power Scraper 270 hp (201.4 kw)
Net Power Tractor Gears 1-2 450 hp (335.6 kw)
Net Power Tractor Gears 3-8 490 hp (365.4 kw)

Scraper Engine

Model 3306TA
Gross Power 250 hp (186.5 kw)
Displacement 638 cu in (10.5 L)
Bore 4.8 in (120.7 mm)
Stroke 6 in (152.4 mm)
Net Power – Gear 1 250 hp (186.5 kw)
Gross Power – Gear 1 270 hp (201.4 kw)
Iso 9249 250 hp (186.5 kw)
CAT Net Power 250 hp (186.5 kw)
Eec 80/1269 250 hp (186.5 kw)
Sae J1349 247 hp (184.2 kw)

Operational Specs

Fuel Tank Capacity 335 gal (1268 L)
Tire Size 37.25R35 E2/E3

Transmission

Max Speed Forward 33 mph (53 km/h)
Reverse 6.2 mile/h

Steering

Width – 180 Degrees Turn 40.1 ft in (12.3 m)
Steering Angle – Right 90 degrees
Steering Angle – Left 85 degrees
Hydraulic Output 96.2 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)

Steering

Ground-Driven Secondary Steering System 52 gal/min

Weights

Total Operating – Empty 112413.8 lb (50990 kg)
Operating Weight 112670 lb (51106.3 kg)
Operating Weight – Loaded – Approximate 113580 lb (51519.1 kg)

Bowl

Rated Payload 75001.3 lb (34020 kg)
Heaped Capacity 31 yd3 (23.7 m3)
Struck Capacity 21.1 yd3 (16.1 m3)
Max Depth Of Cut 17.3 in (437 mm)
Width Of Cut 11.6 ft in (3510 mm)

Operating Specifications

Top Speed – Loaded 34.1 mph (54.9 km/h)
Rated Load 75000 lb (34019.5 kg)
Scraper Capacity – Struck 41 yd3 (31.4 m3)
Scraper Capacity – Heaped 50 yd3 (38.3 m3)

Hydraulics

Bowl Cylinder Bore 7.2 in (182.9 mm)
Bowl Cylinder Stroke 34.4 in (873.8 mm)
Steering Circuit 103 gal/min
Scraper Circuit 91 gal/min
Cushion Hitch Circuit 9 gal/min
Relief Valve – Steering Circuit 1960 psi
Relief Valve – Implement Circuit 2000 psi
Compensator Settings – Cushion Hitch Circuit 2300.01 psi
Ejector Cylinder Bore 8.2 in (208.3 mm)
Ejector Cylinder Stroke 74 in (1879.6 mm)
Secondary Steering Circuit 77 gal/min
Apron Cylinder Bore 8.2 in (208.3 mm)
Apron Cylinder Stroke 28.6 in (726.5 mm)

Scraper Bowl

Width – Cut – To Router Bits 138.3 in (3511.6 mm)
Rated Load 75000 lb (34019.5 kg)
Capacity – Struck 21 yd3 (16.1 m3)
Depth Of Cut – Maximum 17.2 in (436.9 mm)
Ground Clearance – Maximum 21.5 in (546.1 mm)
Cutting Edge Thickness 1.7 in (42 mm)
Depth Of Spread – Maximum 18.9 in (480.1 mm)
Scraper Capacity – Heaped 31 yd3 (23.8 m3)
Hyd. Penetration Force – 621g 81000 lb (36741 kg)
Apron Closure Force 38250 lb (17350 kg)
Apron Opening 79 in (2006.6 mm)

Service Refill Capacities – Tractor

Transmission 33 gal (125 L)
Differential 36 gal (136.3 L)
Final Drive – Each 7 gal (26.5 L)
Cooling System 33 gal (125 L)
Hydraulic Reservoir 50 gal (189.3 L)
Crankcase 11.7 gal (44.3 L)
Wheel Coolant – Each 19.5 gal (73.9 L)

Weights – Standard, Tandem

Total Shipping 110686 lb (50206.4 kg)
Tractor Shipping 44274 lb (20082.4 kg)
Scraper Shipping 66412 lb (30124 kg)
Total Operating – Empty 112670 lb (51106.3 kg)
Front Axle 66475 lb (30152.6 kg)
Rear Axle 46195 lb (20953.8 kg)
Total Operating – Loaded 187670 lb (85125.7 kg)
Front Axle Weight – Loaded 91958 lb (41711.5 kg)
Rear Axle – Weight – Loaded 95712 lb (43414.3 kg)
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