US
Metric

Overview

Cat’s 637 Wheel Tractor-Scraper is engineered to conquer challenges operators face worldwide. With its strength and durability, it works in some of the most difficult conditions and materials one can find.

General

Scraper Capacity - Struck
24.00 yd³
18.30 m³
Width - Cut
11.50 ft
3.51 m
180° Curb-to-Curb Turning Width
40.12 ft
12.23 m
Fuel Tank Refill Capacity - Scraper
370.00 gal (US)
1400.00 l
Scraper Capacity - Heaped
34.00 yd³
26.00 m³
Overall Width
12.93 ft
3.94 m
Top Speed - Loaded
34.70 mile/h
55.80 km/h
Overall Shipping Height
13.62 ft
4.15 m
Maximum Depth of Cut
17.70 in
450.00 mm
Tires - Tractor
37.25R35**E3
Maximum Depth of Spread
21.10 in
535.00 mm
Tires - Scraper
37.25R35**E3
Rated Load
37 200 kg (82,200 lb); 37.2 tonnes (41.1 tons)

Engine

Rated Engine RPM - Tractor
1900.00 r/min
1900.00 r/min
Engine Model - Scraper
Cat C9.3
Engine Model - Tractor
Cat C18
Flywheel Power - Scraper
290.00 hp
216.00 kW
Rated Engine RPM - Scraper
2150.00 r/min
2150.00 r/min
Flywheel Power - Tractor
570.00 hp
425.00 kW
Emissions
Cat C9.3 and C18 engines meet U.S. EPA Tier 4 Final/EU Stage IV emission standards.

Tractor Engine

Flywheel Power - Tractor/Scraper
570.00 hp
425.00 kW

Scraper Bowl

Scraper Capacity - Heaped
34.00 yd³
26.00 m³

Transmission

Top Speed - Loaded
34.70 mile/h
55.80 km/h

Service Refill Capacities

Hydraulic System
37.50 gal (US)
142.00 l
Crankcase - Tractor
13.70 gal (US)
52.00 l
Diesel Exhaust Fluid - Tractor
8.00 gal (US)
30.50 l
Diesel Exhaust Fluid - Scraper
5.80 gal (US)
22.00 l
Transmission System - Scraper
12.90 gal (US)
49.00 l
Fuel Tank
370.00 gal (US)
1400.00 l
Cooling System - Scraper
16.10 gal (US)
61.00 l
Crankcase - Scraper
6.50 gal (US)
24.50 l
Cooling System - Tractor
19.80 gal (US)
75.00 l
Transmission System - Tractor
29.00 gal (US)
110.00 l

Dimensions

Front of Tractor to Front Axle
142.20 in
3612.00 mm
Axle to Vertical Hitch Pin
20.00 in
509.00 mm
Wheel Base
346.80 in
8808.00 mm
Rear Axle - Rear of Machine
90.20 in
2292.00 mm
Length - Maximum (Push-Pull)
655.10 in
16640.00 mm
Width - Overall Machine
155.00 in
3937.00 mm
Width - Rear Tire Centers
96.90 in
2462.00 mm
Extended Push Block (Push-Pull)
108.00 in
2744.00 mm
Width - Outside Rear Tires
143.20 in
3636.00 mm
Width - Inside of Bowl
134.00 in
3404.00 mm
Height - Scraper Blade Maximum
20.00 in
510.00 mm
Ground Clearance - Tractor
26.10 in
664.00 mm
Width - Tractor
137.80 in
3499.00 mm
Length - Overall Machine - Standard
597.00 in
15164.00 mm
Height - Overall Shipping
163.20 in
4145.00 mm
Height - Top of Cab
147.00 in
3733.00 mm

Non Push-Pull

Operating Weight - Empty
114950.00 lb
52140.00 kg
Overall Length
49.34 ft
15.04 m

Push-Pull

Overall Length - With Bail Down
54.59 ft
16.64 m
Operating Weight - Empty
119060.00 lb
54005.00 kg

Cab

Exterior Sound Level
The exterior sound power level for the standard machine (ISO 6393) is 116 dB(A).
ROPS/FOPS
ROPS/FOPS meet “ISO Standards.”

Safety Criteria Compliance Standards

Reverse Alarm
ISO 9533:2010
Brakes
ISO 3450:2011
Falling Object Protective Structure (FOPS)
ISO 3449:2005 Level II
Rollover Protection Structure (ROPS)
ISO 3471:2008 for up to 21 282 kg (46,919 lb)
Seat Belt
SAE J386:FEB2006
Steering System
ISO 5010:2007

Travel Speeds - Runout

Transmission Gear - Reverse
6.20 mile/h
9.90 km/h
Transmission Gear - Second
6.20 mile/h
10.00 km/h
Transmission Gear - First
3.40 mile/h
5.50 km/h
Transmission Gear - Seventh
25.70 mile/h
41.95 km/h
Transmission Gear - Sixth
19.00 mile/h
30.60 km/h
Transmission Gear - Fourth
10.50 mile/h
16.90 km/h
Transmission Gear - Third
7.70 mile/h
12.40 km/h
Transmission Gear - Fifth
14.10 mile/h
22.70 km/h
Transmission Gear - Eighth
34.70 mile/h
55.80 km/h

Implement Cycle Times

Bail Lower
2.10 s
2.10 s
Apron Lower
3.80 s
3.80 s
Apron Raise
4.00 s
4.00 s
Bowl Lower
3.50 s
3.50 s
Bowl Raise
3.50 s
3.50 s
Ejector Retract
8.50 s
8.50 s
Bail Raise
1.50 s
1.50 s
Ejector Extend
8.50 s
8.50 s
Features

Be More Productive

Work in Comfort

Designed for Safety

Easy to Operate

Integrated Cat Technologies

Execute Efficiency

Standard Equipment
  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • POWER TRAIN – TRACTOR
    • Cat C18 engine with MEUI™
    • Compression engine brake
    • Electric start, 24V
    • Air cleaner, dry type with precleaner
    • Fan, hydraulic
    • Ground level engine shutdown
    • Radiator, aluminum unit core, 9 fins per inch
    • Guard, crankcase
    • Starting aid, ether
    • Braking system:
      • Primary and secondary, wet disc, hydraulic actuated
      • Parking, hydraulic-released, spring-applied
    • Throttle lock
    • Transmission:
      • 8-speed planetary power shift
      • ECPC control
      • APECS software
      • Programmable top gear selection
      • Transmission hold
      • Differential lock
      • Guard, power train
      • Standard tire spin reduction
      • Ground speed control
      • Machine speed limit
      • Differential lock protection
  • POWER TRAIN – SCRAPER
    • Cat C9.3 engine:
      • High pressure common rail fuel
      • Constant lift engine brake
    • Electric start, 24V
    • Air cleaner, dry type with precleaner
    • Fan, mechanical driven
    • Ground level engine shutdown
    • Radiator, aluminum unit core, 9 fins per inch
    • Starting aid, either
    • Braking system:
      • Primary and secondary, dry caliper, hydraulic actuated
    • Transmission:
      • 4-speed (torque converter drive)
      • Planetary power shift
  • ELECTRICAL – TRACTOR
    • Alternator, 150 Amp
    • Batteries (4), 12V, 1,000 CCA, maintenance free, high output
    • Electrical system, 24V
    • Lighting system:
      • Headlights, LED
      • Turn signals with hazard function, LED floodlights, (2) cutting edge (1) bowl, halogen side vision (2)
    • Starting/charging receptacle
  • ELECTRICAL – SCRAPER
    • Alarm, backup
    • Batteries (4) 12V, 1,000 CCA, maintenance free, high output
    • Alternator, 65 Amp
    • Electrical system, 24V
    • Lighting system:
      • Brake lights, LED
      • Turn signals with hazard function, LED
  • OPERATOR ENVIRONMENT – TRACTOR
    • HVAC system, heat, AC, defrost
    • Thermostat control of HVAC system
    • Coat hook
    • Lunchbox platform with holding strap
    • Diagnostic connection (2)
    • 12V power ports (2)
    • Differential lock (1)
    • Dome courtesy light
    • Horn, electric
    • T-Handle implement control
    • Mirror, rearview
    • Radio ready
    • ROPS/FOPS cab, pressurized
    • Keypad switches:
      • Throttle lock
      • Wipers/washers
      • Hazard lights
      • Retarding level select
      • Work lights on, off
      • Information mode on Messenger Display
    • Safety tab rocker switches
    • Seat belt, static two-piece
    • Seat, Cat Advanced Ride Management (ARM), Cat Comfort Series 3, rotates 30 degrees
    • Steering wheel, tilt, telescoping, padded
    • Windows, right side emergency egress
    • Windows, sliding
    • Windows, laminated, zipped in
    • Windshield wipers, front and rear windows, includes washers
    • Door lock
    • Messenger Display
    • Gauges, warnings include:
      • Coolant temperature
      • Engine oil temperature
      • Hydraulic oil temperature
      • Diesel Particulate Filter (DPF) temperature
      • Fuel level
      • Park brake
      • Implement lockout
      • Brake system
      • Regeneration required
      • Throttle lock
      • System voltage
      • Secondary steering
      • Bail down
      • Ejector auto
      • Differential lock
      • Apron float
      • Transmission hold
      • Cushion hitch
      • High beam lights
      • Action lamp
      • Engine speed, rpm
      • Gear selection
      • DEF fill levels
  • FLUIDS
    • Extended Life Coolant to –37° C (–34° F)
  • OTHER STANDARD EQUIPMENT – TRACTOR
    • Advanced cushion hitch
    • Accumulators (cushion hitch) with Canadian Registration Number (CRN)
    • Fast oil change
    • Fenders, non-metallic
    • Heater, engine coolant 120V
    • Rims (2)
    • Tow hooks, front
    • Vandalism locks
    • Heater, engine coolant 120V
    • Steering locks
  • OTHER STANDARD EQUIPMENT – SCRAPER
    • Bowl:
      • 18.3 m3 (24 yd3), struck
      • 26 m3 (34 yd3), heaped
    • Vandalism locks
    • Scraper fenders
    • Overflow guard
    • Fast oil change
    • Rims (2)
    • Hydraulic position sensing cylinders (bowl lift and apron)
Optional Equipment
  • NOTE
    • Standard and optional equipment may vary. Consult your Cat dealer for details.
  • STEERING ARRANGEMENTS
    • Secondary Steering Arrangement
  • INTEGRATED TECHNOLOGIES
    • Sequence Assist Arrangement with Payload Estimator
    • Load Assist
    • Cat Grade Control with Load Assist
    • Advanced Tire Spin Reduction
  • OTHER ATTACHMENTS
    • Camera arrangement – Work Area Vision System (WAVS)
    • Cab beacon
    • Air horn
    • Air horn and beacon
    • Wiring group
    • Push Pull
  • SERVICE INSTRUCTIONS
    • Film arrangement – U.S. (ANSI)
    • Film arrangement – International (ISO)