637G

Overview & Specifications

Engine

Tractor Engine

3408E

3408E

Scraper Engine

C-9

C-9

Tractor Engine

Flywheel Power: Tractor/Scraper

336 kW (450 hp) / 186 kW (249 hp)

336 kW (450 hp) / 186 kW (249 hp)

Gross Power - Gears 1-2

480 hp

358 kW

Gross Power - Gears 3-8

519 hp

387 kW

Net Power - Gears 1-2

450 hp

336 kW

Net Power - Gears 3-8

485 hp

362 kW

Bore

5.4 in

137 mm

Stroke

6 in

152 mm

Displacement

1099 in3

18 L

Scraper Engine

Gross Power - Gear 1

274 hp

204 kW

Gross Power - Gears 2-4

299 hp

223 kW

Net Power - Gear 1

249 hp

186 kW

Net Power - Gears 2-4

274 hp

204 kW

Bore

4.41 in

112 mm

Stroke

5.87 in

149 mm

Displacement

538 in3

8.8 L

Scraper Bowl

Scraper Capacity: Heaped

34 yd3

26 m3

Rated Load

82260 lb

37285 kg

Capacity Struck

24 yd3

18 m3

Depth of Cut - max.

17.2 in

437 mm

Width of Cut, to Router Bits

138.3 in

3512 mm

Ground Clearance - max.

21.5 in

545 mm

Hyd. Penetration Force - 621G

81000 lb

360 kN

Depth of Spread - max.

18.9 in

480 mm

Apron Opening

79 in

2007 mm

Apron Closure Force

38250 lb

170 kN

Transmission

1 Forward

3.4 mph

5.5 km/h

2 Forward

6.2 mph

10 km/h

3 Forward

7.6 mph

12.2 km/h

4 Forward

10.3 mph

16.6 km/h

5 Forward

13.8 mph

22.2 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

Reverse

6.2 mph

9.9 km/h

Hydraulics

Bowl Cylinder Bore

7.25 in

184 mm

Bowl Cylinder Stroke

34.4 in

873 mm

Apron Cylinder Bore

8.3 in

210 mm

Apron Cylinder Stroke

28.6 in

727 mm

Ejector Cylinder Bore

8.3 in

210 mm

Ejector Cylinder Stroke

74 in

1880 mm

Steering Circuit

100 gal/min

379 L/min

Scraper Circuit

91 gal/min

344 L/min

Cushion Hitch Circuit

9 gal/min

34.5 L/min

Secondary Steering Circuit

100 gal/min

379 L/min

Relief Valve - Steering Circuit

1987 psi

13700 kPa

Relief Valve - Implement Circuit

2030 psi

14000 kPa

Compensator Setting - Cushion Hitch Circuit

2320 psi

16000 kPa

Steering

Width - 180° Turn

40 ft

12.2 m

Steering Angle – Right

90°

90°

Steering Angle – Left

85°

85°

Service Refill Capacities – Tractor

Crankcase

11.9 gal

45 L

Transmission

29 gal

110 L

Differential

39 gal

148 L

Final Drive (per side)

6.1 gal

23 L

Cooling System

29 gal

110 L

Hydraulic Reservoir

50.2 gal

190 L

Wheel Coolant (each)

19.8 gal

75 L

Windshield Washer

1.5 gal

6 L

Dimensions

Width - overall machine

155 in

3938 mm

Width - tractor

137 in

3481 mm

Width - rear tire center lines

97 in

2464 mm

Width - inside of bowl

134 in

3405 mm

Width - outside rear tires

143.2 in

3636 mm

Height - overall shipping

168.75 in

4286 mm

Height - top of cab

146.25 in

3715 mm

Ground Clearance, Tractor

26.2 in

665 mm

Front of Tractor to Front Axle

135.25 in

3359 mm

Axle to Vertical Hitch Pin

21.6 in

548 mm

Height - scraper blade max.

21.5 in

545 mm

Wheelbase

345.25 in

8769 mm

Length - overall machine

573.4 in

14565 mm

Rear Axle to Rear of Machine

95.75 in

2437 mm

Bail Length - max. (push-pull)

195.3 in

4960 mm

Extended Push Block (push-pull)

108 in

2744 mm

Weights - Standard, tandem

Total Shipping

112760 lb

51147 kg

Tractor Shipping

66529 lb

30177 kg

Scraper Shipping

46231 lb

20970 kg

Total Operating - empty

114744 lb

52047 kg

Front Axle

67700 lb

36708 kg

Rear Axle

47044 lb

21339 kg

Total Operating - loaded

196944 lb

89332 kg

Front Axle Weight - loaded

96503 lb

43773 kg

Rear Axle Weight - loaded

100441 lb

45559 kg

Weights - Push-Pull

Total Shipping

116100 lb

52662 kg

Tractor Shipping

68499 lb

31071 kg

Scraper Shipping

47601 lb

21591 kg

Total Operating - empty

118084 lb

53562 kg

Front Axle

69670 lb

31602 kg

Rear Axle

48414 lb

21960 kg

Total Operating - loaded

200284 lb

90874 kg

Front Axle - loaded

98139 lb

44515 kg

Rear Axle (Loaded)

102145 lb

46332 kg

Weights

Operating Weight

114743.86 lb

52047 kg

Standards

Cab

Meets ANSI, SAE

Meets ANSI, SAE

ROPS / FOPS

Meets SAE, ISO

Meets SAE, ISO

Brakes

Meets ISO

Meets ISO