Caterpillar 623H BROCHURE

623H

Wheel Tractor-Scraper

Engine Scraper Bowl

Tractor Cat
Max. Power 304 kW 407 hp Rated Load 25 038 kg 55,200 lb

®

C13 ACERT™ Heaped Capacity 17.6 m

3

23 yd

3

623H Features

Economical Hauling System

The wheel tractor-scraper, with its ability to load
quickly, haul at high speeds and dump on the go,
has the potential to be the most profitable hauling
system on the job site. This efficiency can result in
fewer machines on the job, reduced operating costs
and jobs delivered in a shorter period of time.

Power Train

Caterpillar designed and manufactured power
train components deliver the power necessary
forfastloading and quick hauls.

Operator Station

Single joystick control of implements, adjustable
arm rests, seat, steering column and room to
maneuver all reduce fatigue and increase operator
comfort and productivity throughout the shift.

Cushion Hitch

The cushion hitch is a Caterpillar proven system
for protecting components of the hitch and improving
ride quality, dampening loads that might otherwise
be carried through the frame tothe operator.
Cushion hitch offers operators a more comfortable
haul portion of the work cycle.

Durability

Cat wheel tractor-scrapers have a history of robust
structural design, tested and validated to last in
the most rugged loading and hauling conditions.

Contents

Operator’s Station ...............................................3

Operator Comfort ................................................4

Power Train – Engine .........................................5

Power Train – Transmission ..............................6

Structures.............................................................7

Scraper Bowl .......................................................8

Elevator .................................................................9

Integrated Technologies ..................................10

Complete Customer Support ...........................11

Safety ..................................................................12

623H Wheel Tractor-Scraper Speci cations ...13

623H Standard Equipment ...............................18

623H Optional Equipment .................................19

Quick loading, high travel speeds and the ability to load
and dump on the run yield fast cycle times, allowing
Cat Wheel Tractor-Scrapers to consistently deliver
highproductivity at the lowest cost per ton.

2

Operator’s Station

Ergonomically designed for all-day comfort, control and productivity.

Ergonomic Layout

The all new H Series operator station is ergonomically designed for total machine control in a comfortable,
productive and safe environment. All controls, levers, switches and gauges are positioned to maximize
productivity and facilitate a reduction in operator fatigue.

Viewing Area

Designed for excellent all-around visibility and clear sight lines to the job site, the large viewing area offers
exceptional visibility to the front of the machine as well as to the cutting edge. The air conditioning unit
has been relocated to beneath the cab, allowing the operator enhanced visibility.

1) Angled Steering Wheel for enhanced comfort while loading. 2) Lunchbox Storage Platform with Strap.

3) Sequence Assist, and Cat® Grade Control Controls (optional). 4) Work Area Vision System (WAVS)
(optional). 5) Cat Messenger Display. 6) Implement Control Lever. 7) CatGrade Control Display (optional).

8) Transmission Controls. 9) Cat Comfort Seat. 10) Coat Hook. 11)DomeCourtesy Light.

12)RearviewMirror. 13) Radio-Ready. 14) Heating and Air Conditioning.

3

Operator Comfort

High productivity from a comfortable, confident operator.

Spacious Cab

With a 21% larger cab, H Series scrapers offer a comfortable
working space. The larger cab and wider door make getting
in and out of the cab easier. The increased glass area enhances
visibility around the machine.

Steering Column

The steering column and pedals have been relocated for
morecomfortable operation when the seat is angled during
machine operation. The telescopic and tilt adjustable steering
column maintains a comfortable driving position regardless
of operator size.

Standard Comfort Features

The H Series cab is equipped with features designed to
maintain operator comfort. Standard comfort features
include: coat hook, lunchbox storage platform with strap,
airconditioning, heat, and radio-ready.

Seat Options

H Series scrapers use the Cat Comfort Seat with additional
travel to allow the operator to position themselves for optimal
comfort and productivity. The seat rotates up to 30 degrees
to the right for a more comfortable position during loading
and 30 degrees to the left to make getting in and out of the
cab easier.

For unparalleled ride comfort, H Series scrapers are
equipped with the Cat Advanced Ride Management (ARM)
seat suspension which uses an active suspension to dampen
vibration and minimize end-of-stroke shock loads to
theoperator.

Integrated Technologies

The optional Sequence Assist and Cat Grade Control
automate many repetitive operator tasks.

T-Handle Implement Control Lever

The redesigned control lever puts all of the scraper functions
in the palm of the operator’s hand. The low-effort lever and
convenient push-button and thumb wheel controls are
ergonomically placed for minimum arm movement.

4

Power Train – Engine

The Cat® C13 ACERT™ engine is built for power, reliability and efficiency.

ACERT Technology

The Cat® C13 ACERT™ engine continues the evolutionary, incremental improvements that provide
breakthrough engine technology built on systems and components developed by Caterpillar with
provenreliability. The engine is available with either U.S. EPA Tier 3/EU Stage IIIA equivalent emission
configurations orU.S.EPA Tier 4 Interim/EU Stage IIIB certified emission configurations to meet the
needs ofcontractors around the world.

Emissions

Machines equipped with engines meeting U.S. EPA Tier 4 Interim/EU Stage IIIB emission standards are
equipped with a Cat Clean Emission Module to deliver the performance and efficiency that customers
demand while meeting emission requirements. Machines equipped with the U.S. EPA Tier 3/EU StageIIIA
equivalent engines are equipped with a muffler in place of the Cat Clean Emission Module.

Cat Clean Emission Module (CEM)

CEM is an exhaust aftertreatment package consisting of a diesel particulate filter, and control systems.
The CEM reduces particulate emissions using passive and active regeneration during normal engine operation.

Cat NOx Reduction System (NRS)

The Cat NOx Reduction System (NRS) captures and cools a small quantity of exhaust gas, then routes it
into the combustion chamber where it drives down combustion temperatures and reduces NOx emissions.

Diesel Particulate Filter Regeneration

Regeneration is the removal of soot from the Diesel Particulate Filter (DPF). The Aftertreatment
Regeneration Device (ARD) is used to regenerate the DPF. The DPF traps both particulates and ash,
the ash is removed at regular service intervals.

5

Power Train – Transmission

More power to the ground for greater productivity.

Electronic Transmission

The Cat eight-speed forward one-speed reverse Electronic
Clutch Pressure Controlled (ECPC) transmission features
enhanced shift control logic with anti-hunt shift strategy
forspeed continuity, and to ensure constant shift times.

• Tractor gears 1-2 – converter drive for increased torque,
gears 3-8 – direct-drive for drive train efficiency.

• Transmission Hold maintains converter drive for
maximum rimpull or holds current gear for best control.

• Programmable Top Gear manually sets top gear
available (3rd-8th) to match conditions or speed.

• Neutral Coast Inhibitor prevents transmission shifts
intoneutral while moving.

Smooth Transmission Gear Shifting

The 623H features ECPC Shift Torque Management (STM),
with improved Shift Control Logic (SCL) and Part Throttle
Shifting (PTS). These features allow smoother shifting and
greater acceleration on grades while torque is maintained
through the shift changes. SCL also provides automatic
shiftselection that is more specific to the desired machine
operation, and downshifts when needed for maximum
acceleration when increased throttle is applied. PTS allows
shifting at lower speeds during part throttle operation,
resulting in improved part throttle fuel economy, quieter
machine operation, and better maneuvering in reduced
speedoperating conditions.

Brake Performance

The 623H uses hydraulically-actuated wet disc brakes for
exceptional brake performance. The standard Cat Engine
Brake reduces brake wear and enhances machine control.

6

3

2

1

5

Structures

Superior design and construction delivers long term durability.

Cushion Hitch

Electronically actuated with parallelogram-type linkage for exceptional strength, with two nitrogen
accumulators (4) using free-floating pistons (8) to deliver a smooth ride for enhanced operator comfort
and machine durability.

• controlled oil flow (6) dampens rebound oscillation

• leveling valve (7) applies pressure via an orifice (5) to automatically center the piston in load
cylinder (1)

• steel castings are used to eliminate many welded joints and increase strength

• double-kingbolt design (2, 3) withstands high external forces, simplifies installation and removal

4

4

8

7

8

6

Lockout Switch

An operator-selectable lockout switch, located on the joystick, locks the cushion hitch down for
improved control of the cutting edge during loading and dumping.

Nitrogen Accumulator

Vertically mounted hydraulic cylinder transfers road shocks to nitrogen accumulators.
Nitrogenaccumulator absorbs and dampens road shocks, thus preventing the loads from
beingtransmitted to the hitch components or to the operator.

Non-Metallic Fenders and Fuel Tank

The new fuel tank is made of recyclable roto-milled polyethylene and keeps the fuel cleaner with
controlled filtration and cleanout access ports. The new capacity of the new fuel tank has been
increased, providing operators with 10 plus hour shifts depending on engine load factors.

The new tractor fenders are made of the same highly durable, roto-milled polyethylene.
The non-metallic fenders prevent material buildup when operating in sticky materials.

7

Scraper Bowl

Caterpillar designed and built for rugged performance and reliability.

Redesigned Bowl

The structure of the bowl sidewalls, ejector and floor have been improved for improved durability.
Newfloor door rollers are used for longer life. The bowl uses a low profile design offering low resistance
to incoming materials.

Ejection System

The powerful ejection system provides constant spreading control while minimizing carryback material.
The floor of the bowl retracts as the ejector moves forward, allowing the operator to precisely control
the flow of material.

Cutting Edges and Cat Ground Engaging Tools (GET)

A variety of Ground Engaging Tools (G.E.T.) options are available to optimize the machine for
different material typesand loading conditions. GET options include standard, serrated, and Abrasion
Resistant Material (ARM). Most are reversible to provide long life and reduced operating costs.
Contactyour Cat dealer to learn more about the best tools for your applications.

Material Application

The 623H is ideal for windrowing, blending material as wellas breaking up vegetation in
strippingoperations.

8

Elevator

The stronger elevator makes the 623H capable of far more than finish work.

Material Handling

The elevator lifts material off of the cutting edge and carries
it to the top of the elevator and then dumps the material into
the bowl. Blending the material helps eliminate voids in the
bowl for consistent payloads and uneven loading.

Closed Loop Elevator Hydraulic System

The 623H elevator power has been increased by a new
variable displacement piston pump and fixed displacement
motor in a closed-loop circuit. The increased power enables
the operator to take deeper cuts and load in a shorter
distance with less elevator stall.

Redesigned Elevator Structures

The 623H elevator and chain life has been improved through
structural improvements to the elevator structure. Wear plates
are used in place of rollers for reduced chain stretch.

New Elevator Controls

The elevator is engaged with a thumb roller on the joystick.
The operator can choose one of seven forward and four reverse
speeds to match the speed that best matches the material.

Chain Adjustment

Serviceability is enhanced through a new chain adjustment
mechanism. The new scissors-style chain adjuster uses a
simple tool to tighten the chain in 2.54 cm (1.0 in) increments.

Elevator Flights

The life of the 15 elevator flights is improved in abrasive
materials through the addition of high-strength, wear-resistant
steel on the face of each flight.

9

Integrated Technologies

Technology options to improve operator comfort and increase productivity.

Sequence Assist

Sequence Assist uses integrated software and position-sensing
cylinders to automate many of the tasks an operator performs
when loading, hauling and dumping. The operator simply
sets preferences for bowl and apron height and subsequently
pushes a button to ready the machine for loading, then
hauling, then dumping, and then the return to cut. The system
automatically sets the cushion hitch, bowl height, ejector and
elevator. Sequence Assist comes with a convenient load
counter for tracking material moved.

With Sequence Assist, up to 14 individual implement and
machine commands are replaced by four touches of a button,
allowing the operator additional time to prepare for the
loading cycle and observation of the job site.

Cat Grade Control

Cat Grade Control is an automatic system that helps you
control costs by moving the maximum amount of material
with the prime earthmover which often provides the lowest
cost per unit of material moved. Using satellite positioning
technology, the automatic system ensures cut protection by
limiting how deep the scraper will dig. The optional system
isavailable from the factory and fully integrated into the
machine and works seamlessly with Sequence Assist.

Additional benefits of Cat Grade Control include putting the
site plan in front of the operator for increased efficiency and
elimination of rework and using the scraper for site mapping.

10

Work Area Vision System (WAVS)

Cameras on the machine provide views of the cutting edge,
right side and rear. The system enhances safety and provides
a new way to see the cutting edge during loading and to see
to the rear of the machine when performing push-load or
push-pull work with another scraper.

Complete Customer Support

Cat® dealer services help you operate longer with lower costs.

Selection

Make comparisons of the machines you are considering before you buy. Your Cat® dealer can help.

Purchase

Consider the resale value, compare productivity and day-to-day operating costs and fuel consumption.

Operation

For the best operating techniques to increase productivity and your profit, turn to your Cat dealer for
the latest training literature and trained staff.

Maintenance

SM

Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as S·O·S
and Technical Analysis help you avoid unscheduled repairs.

Replacement

Repair or rebuild? Your Cat dealer can help you evaluate the costs so you can make the right choice.

Product Support

Your local Cat dealership will be with you every step of the way with its unsurpassed worldwide parts
support, trained technicians and customer support agreements.

cat.com

For more complete information on Cat products, dealer services and industry solutions, visit us on the
web at www.cat.com

11

Safety

Safety is an integral part of all machine and system designs.

Powered Access Ladder

A new powered access system option significantly reduces the effort required to climb into the cab.
Thesystem is a solid, stable angled ladder that folds out from underneath the cab. It is activated from a
keypad located behind a service door at ground level. Controls are also located in the cab on a keypad.

The ladder provides a rigid and angled base of support for easier climbing and descent. For added safety,
the steps are illuminated by LED lights.

An actuator under the cab operates the step. When not in use, the ladder retracts under the cab. An audible
alarm sounds if the machine moves while the ladder is down. If power fails on the machine, the operator
can raise or lower the steps manually using a lever inside the cab or outside next to the ladder’s top step.

Access and Egress

Handrails and grab irons are provided for safe and secure entrance and exit of the cab as well as for
performing daily maintenance.

Work Area Vision System (WAVS)

Cameras on the machine provide views of the cutting edge, right side and rear. The system enhances
safety and provides a new way to see the cutting edge during loading and to see to the rear of the
machine when performing push-load or push-pull work with another scraper.

12

623H Wheel Tractor-Scraper Specifications

Tractor Engine – U.S. EPA Tier 4 Scraper Bowl Hydraulics Interim/EU Stage IIIB

Tractor Engine Cat® C13 ACERT™

Max. Power 304 kW 407 hp
(AllGears)
(ISO14396)

Max. Power 1,700 rpm
Reference
EngineSpeed

Displacement 12.5 L 763 in

Bore 130 mm 5.1 in

Stroke 157 mm 6.2 in

• Max. power advertised is the max. power

available at max. power reference engine
speed of 1,700 rpm, measured at the  ywheel
when the engine is equipped with air cleaner,
alternator, and exhaust losses.

3

Tractor Engine – Prior U.S.EPA
Tier 3/EU Stage IIIA configuration*

Tractor Engine Cat® C13 ACERT™

Max. Power 304 kW 407 hp
(AllGears)
(ISO14396)

Max. Power 1,700 rpm
Reference
EngineSpeed

Displacement 12.5 L 763 in

Bore 130 mm 5.1 in

Stroke 157 mm 6.2 in

• Max. power advertised is the max. power

available at max. power reference engine
speed of 1,700 rpm, measured at the
ywheel when the engine is equipped with
air cleaner, alternator, and exhaust losses.

* For jurisdictions other than the U.S.

andthe European Union.

3

Heaped Capacity 17.6 m

Rated Load 25 038 kg 55,200 lb Bowl Cylinder 845 mm 33.3 in

Struck Capacity 14.4 m

Maximum Depth
ofCut

Width of Cut, 3136 mm 123.5 in
Outside Router Bits Ejector Cylinder 110 mm 4.3 in

Maximum Ground 529 mm 20.8 in
Clearance at Ejector Cylinder 1213 mm 47.8 in
CuttingEdge Stroke

Thickness of 22 mm 0.9 in
CuttingEdge

Maximum Hydraulic 590 kN 132,640 lbf
Penetration Force

Maximum Depth 465 mm 18.3 in
ofSpread

3

3

262 mm 10.3 in

Transmission

1 Forward

2 Forward

3 Forward

4 Forward

5 Forward

6 Forward

7 Forward

8 Forward

Reverse

5.0 km/h

8.9 km/h

12.1 km/h

16.3 km/h

21.9 km/h

29.6 km/h

39.9 km/h

53.9 km/h

9.2 km/h

3

23.0 yd

3

18.8 yd

3.1 mph

5.5 mph

7.5 mph

10.1 mph

13.6 mph

18.4 mph

24.8 mph

33.5 mph

5.7 mph

Bowl Cylinder Bore 140 mm 5.5 in

Stroke

Bowl Floor Cylinder
Bore

Bowl Floor Stroke 1353 mm 53.3 in

Bore

Steering Cylinder 127 mm 5.0 in
Bore

Steering Cylinder 1128 mm 44.4 in
Stroke

Cushion Hitch 140 mm 5.5 in
Cylinder Bore

Cushion Hitch 251 mm 9.9 in
Cylinder Stroke

Steering Circuit 234 61.8
Flow L/min gal/min

Secondary Steering 39.0 10.3
Circuit Flow L/min gal/min

Scraper Circuit 192 50.7
Flow

Elevator Circuit 257 67.9
Flow L/min gal/min

Cushion Hitch 40.1 10.6
Circuit Flow L/min gal/min

Steering

Steering Angle – 85º
Right

Steering Angle – 82º
Left

130 mm 5.1 in

L/min gal/min

13

623H Wheel Tractor-Scraper Specifications

Weights Service Refill Capacities – Tractor Standards

Machines meeting U.S. EPA Tier4 Interim/
EU Stage IIIB emission standards

Shipping Weight – 39 259 kg 86,259 lb
10% Fuel

Operating Weight – 39 937 kg 88,046 lb
full fuel tanks

Loaded, based 64 975 kg 143,245 lb
onarated load

Machines achieving prior U.S. EPA Tier 3/
EU Stage IIIA emissions levels

Shipping Weight – 39 011 kg 86,004 lb
10% Fuel

Operating Weight – 39 689 kg 87,499 lb
full fuel tanks

Loaded, based 64 728 kg 142,701 lb
onarated load

Engine Crankcase 33 L 8.75 gal

Transmission 70 L 18.5 gal

Differential 173 L 45.8 gal

Final Drive (perside) 19 L 5.0 gal

Cooling System 64 L 17.0 gal

Hydraulic Reservoir 83 L 22.0 gal

Windshield Washer 5 L 1.3 gal
Reservoir

Service Refill Capacities – Scraper

Non-Powered Wheel 4 L 1.1 gal

Fuel Tank 763 L 201.6 gal

• Steering System meets ISO 5010:2007
foruptoa maximum approved
operatingweight

• Brakes meet ISO 3450:1996 for up to a
maximum approved operating weight

• Rollover Protective Structure (ROPS) is
certied to a tractor only mass of 18800kg
(41,447 lb) as tractor portion of tractor­scrapers per Table 1 of ISO 3471:2008.
Thisexcludes scraper weight and payload.

• Falling Object Protective Structure (FOPS)
meets ISO 3449:2005 Level II

• Seat Belts meet SAE J386 June 1985

• Forward and Reverse Alarms meet
ISO9533:1989

• Optional Information

• The dynamic operator sound pressure level
is76 dB(A) when “ISO 6396:2008” is used
tomeasure the value for an enclosed cab.
Themeasurement was conducted at 100%
ofthe maximum engine cooling fan speed.
Thesound level may vary at different
engine cooling fan speeds. Thecab was
properly installed and maintained.
Themeasurement was conducted with
thecab doors and the cab windows closed.
Thecab was properly installed and
maintained. Hearing protection may
beneeded when the machine is operated
with an open operator station for extended
periods or in a noisy environment.
Hearingprotection may be needed when
themachine is operated with a cab that
isnot properly maintained or when the
doors and windows are open for extended
periods or in a noisy environment.

• The average exterior sound pressure level
is80dB(A) when the “SAE J88 FEB06–
Constant Speed Moving Test” procedure is
used to measure the value for the standard
machine. The measurement was conducted
under the following conditions: distance of
15m (49.2 ft) and “the machine moving
forward in an intermediate gear ratio.”

• The exterior sound power level is 113 dB(A)
when the value is measured according
tothestatic pressure test procedures
andtheconditions that are speci ed
in“ISO6393:2008.”

14

Dimensions

All dimensions are approximate.

1 32

6

5

4

8 9

7

12

mm in mm in

Width – overall machine 3565 140.4

1

Width – tractor (ladder down) 3688 145.2

2

Width – tractor 3381 133.1

3

Width – rear tire centers 2290 90.2

4

Width – inside bowl 3048 120.0

5

Width – outside rear tires 3165 124.6

6

Height – overall shipping 4037 158.9

7

Height – top of cab 3714 146.2

8

10

11

Height – top of elevator 3768 148.3

9

Ground clearance, tractor 557 21.9

10

Front of tractor to front axle 3119 122.8

11

Axle to vertical hitch pin 540 21.3

12

Height – scraper blade maximum 520 20.5

13

Wheelbase 8370 329.5

14

Length – overall machine 13 767 542.0

15

Rear axle to rear of machine 2278 89.7

16

13

14 16

15

15

623H Wheel Tractor-Scraper Specifications

623H Rimpull

GROSS WEIGHT

lb X
1000

110

kg X
1000

50

0

0

20

10

40

20

60 80 100 120

30 40 50

140

60

160

70

lb X 1000

kg X 1000

80

100

90

80

70

60

50

RIMPULL

40

30

20

10

45

40

35

30

25

20

15

10

E

1

L

30%

25%

2

3

4

5

5

6

7

8

20%

15%

10%

5%

(Grade Plus Rolling)

TOTAL RESISTANCE

16

0 5 10 15 20 25 30 35 40 45 50 55

0 5 10 15 20 25 30

SPEED

km/h

mph

623H Retarding*

GROSS WEIGHT

0 20 40 60

0 10 20 30 40 50 60 70 80

80 100 120 140 160

lb X 1000

kg X 1000

E

3

4

5

6

7

30%

L

25%

20%

15%

10%

Effective Grade

(Grade minus Rolling Resistance)

5%

8

0 5 10 15 20 25 30 35 40 45 50 55 60

0 5 10 15 20 25 30 35

*at sea level on high setting

SPEED

km/h

mph

17

623H Standard Equipment

Standard equipment may vary. Consult your Cat dealer for details.

POWER TRAIN

TRACTOR:

C13 ACERT engine with MEUI
Cat Engine Brake
Electric start, 24 Volt
Air cleaner, dry type with precleaner
Fan, hydraulic
Diesel Particulate Filter (DPF)

aftertreatment (for engine meeting
U.S.EPA Tier 4 Interim/EU Stage IIIB

emission standards)
Ground level engine shutdown
Radiator, aluminum unit core,

9 ns per inch
Guard, crankcase
Mufer (for engines achieving U.S. EPA

Tier 3/EU Stage IIIA emission levels)
Starting aid, ether
Braking system:

Primary and Secondary, wet disc,

hydraulic

Parking, hydraulically-released,

spring-applied
Throttle Lock
Transmission:

8-speed planetary powershift
ECPC Control
APECS software
Programmable top gear selection
Transmission hold
Differential lock
Guard, power train

SCRAPER:

C9.3 ACERT engine with high pressure

common rail fuel
Cat Engine Brake
DPF aftertreatment module (for engine

meeting U.S. EPA Tier 4 Interim/

EUStage IIIB emission standards)
Electric start, 24 volt
Fan, driveline
Ground engine shutdown
Mufer (for engines achieving prior

U.S.EPA Tier 3/EU Stage IIIA

emissionlevels)
Starting aid, ether
Braking system:

Primary and Secondary, wet disc, hydraulic

Parking, hydraulically-released,

spring-applied

4-speed (torque converter drive)

transmission, planetary powershift

ELECTRICAL

TRACTOR:

Alternator, 150 Amp
Batteries (4), 12 Volt, 1,000 CCA,

maintenance free, high output
Electrical system, 24V
Lighting system:

Headlights, halogen

Turn signals with hazard function

LED Floodlights, halogen (2), cutting

edge (1), bowl (2), side vision (2)

Starting/charging receptacle

SCRAPER:

Alarm, backup
Alternator, 65 Amp
Batteries (4), 12 Volt, 1,000 CCA,

maintenance free, high Output
Lighting system:

Brake lights, LED

Turn signals with hazard function, LED
Starting/charging receptacle

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, 12V
ROPS/FOPS cab, pressurized
Keypad switches
Safety tab rocker switches
Parking brake
Seat belt, static two-piece
Seat, air suspension, Comfort Series 3,

rotates 30 degrees
Steering wheel, tilt, telescoping, padded
Storage in dash if WAVS or Cat Grade

Control is not equipped
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 temp
Engine oil temp
Hydraulic oil temp
DPF temp
Fuel level
Park brake
Implement lockout
Brake system
Regeneration required
Throttle lock
System voltage
Secondary steering
Bail down
Differential lock
Apron  oat
Transmission hold
Cushion hitch
High beam lights
Action lamp
Engine speed, rpm
Gear selection out
DPF  ll levels

FLUIDS

Extended Life Coolant to –37° C (–34° F)

OTHER STANDARD EQUIPMENT

TRACTOR:

Cushion hitch
Accumulators (cushion hitch) with

Canadian Registration Number (CRN)
Fast oil change
Fenders, non metallic
Heater, engine coolant 120V
Tow pin, front
Vandalism locks

SCRAPER:

Quick drop bowl valve
Vandalism locks
Elevator with 15  ights

18

623H Optional Equipment

Optional equipment may vary. Consult your Cat dealer for details.

Sequence Assist HID Work lights Cab precleaner
Cat Grade Control Low ambient uids –51° C (–61° F) Cab rotating beacon
Secondary Steering Work Area Vision System (WAVS) – three Air horn
Powered access ladder
Cat Active Ride Management (ARM) seat
Fast fuel  ll

cameras showing right side, cutting edge
and directly behind machine, display in cab

External steering lock

Fender extension, scraper

19

623H Wheel Tractor-Scraper

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All rights reserved

Materials and specications are subject to change without notice. Featured machines
in photos may include additional equipment. See your Cat dealer for available options.

CAT, CATERPILLAR, SAFETY.CAT.COM, their respective logos, “Caterpillar Yellow”
and the “Power Edge” trade dress, as well as corporate and product identity used herein,
are trademarks of Caterpillar and may not be used without permission.

AEHQ6715 (03-2012)