Page 1
308D CR
308D CR SB
Mini Hydraulic Excavators
®
Engine
Engine Model MMC 4M40-TL
Net Power 41.5 kW 55.6 hp
Gross Power 43 kW 57.6 hp
Weights
Operating Weight – 308D CR 7850 kg 17,305 lb
Operating Weight – 308D CR SB 8400 kg 18,519 lb
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308D CR
308D CR SB
Features
Comfortable Cab
Intuitive seat-mounted controls and a
spacious cab with an air suspension seat
keep you comfortable all day.
Compact Radius Design
and Swing Boom Option
Machine fits easier and works well in tight
areas, reducing the risk of machine and
jobsite damage.
Versatility
Machine is configured to operate with a
wide selection of Cat® Work Tools increasing
jobsite versatility.
Performance
High digging forces and fast cycle times
maximize productivity without compromising
controllability.
Contents
Operator Station . . . . . . . . . . . . . . . . . . . . .3
Compact Radius . . . . . . . . . . . . . . . . . . . . .3
Performance . . . . . . . . . . . . . . . . . . . . . . . .4
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Work Tools . . . . . . . . . . . . . . . . . . . . . . . . . .5
Undercarriage . . . . . . . . . . . . . . . . . . . . . . .6
Serviceability. . . . . . . . . . . . . . . . . . . . . . . .7
Customer Support. . . . . . . . . . . . . . . . . . . .7
Specifications . . . . . . . . . . . . . . . . . . . . . . .8
Standard and Optional Equipment. . . . .11
2
The Cat 308D CR and 308D CR SB Mini Hydraulic Excavators
deliver superior performance and comfort while reducing your
operating costs. The large spacious cab provides a comfortable
work area. Intuitive seat-mounted controls are easy to use for
greater job accuracy and efficiency. The compact radius design
allows jobsite work where other machines cannot operate –
significantly impacting your bottom line. The swing boom
version increases the machine and the customer's versatility by
allowing the operator to dig box sections without repositioning
the machine. The swing boom also allows you to accurately
and safely dig along obstacles like fences, walls and buildings.
The 308D CR and 308D CR SB set the standard for excavators in
the eight-ton size class.
Page 3
Operator Station
Simple, easy operation allows the operator to focus on production.
A larger, spacious cab provides operator comfort and improved
visibility. Joystick controlled swing boom and auxiliary switches
clear space on the fl oor giving the operator plenty of foot and
leg room. An intuitive cab layout for ease of operation reduces
operator fatigue. Other cab features include:
• Air conditioning is standard.
• 12V power receptacle for charging cell phones.
• A reclining air suspension seat with adjustable armrests.
• Storage space for literature and cup holder.
• Low effort joystick controls designed to match the operator’s
natural wrist and arm positions. Consoles can be adjusted
independently of the seat for maximum comfort.
• Overhead skylight improves visibility and can be opened
to create air fl ow.
• Upper front windshield opens and easily stores on the roof
above the operator with an automatic latching mechanism.
• All functions are fully pilot operated lowering owning and
operating costs.
• Pattern control changer is located under the fl oor mat.
Monitor Display
Newly designed LCD monitor is located to give a clear view
of the machine’s monitoring system, ensuring fuel level, water
temperature and warning lights are easily seen.
Compact Radius
More versatile in tight areas.
• The compact radius design provides greater versatility and
capability to work within confi ned areas. The radius of the
upper body stays close to the width of the undercarriage
allowing the operator to concentrate on the work at hand,
rather than the tail swing of the machine.
• Cab door is curved and shaped to follow the line of the
cab, it slides open taking up less space than a hinged door.
When working in tight areas this allows for safer ingress
and egress. This design maintains the machine’s compact
dimensions reducing the risk of damage.
• Jobsite fl exibility with a reduced risk of damage and less
stress for the operator add up to higher rates of productivity.
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Page 4
Performance
Powerful digging with precise control.
Hydraulics
Smooth responsive hydraulics give the level of control demanded by the
customer in any application, from fi ne grading and dozing to backfi lling.
Powerful bucket and stick digging forces combined with fast cycle times result
in world class productivity and performance. Automatic two speed function
improves jobsite maneuverability with precise control by balancing travel
speed with the torque needed for turning and traveling on inclines. Dozer blade
fl oat function enables easy ground levelling for landscaping and fi nish grade
applications as well as more effi cient jobsite clean-up. Economy mode can be
selected with the in-cab LCD monitor and provides better fuel effi ciency in a
platform well suited for less experienced operators.
Controls
Joystick mounted auxiliary and boom swing control enhances machine
controllability. Intuitive controls give fi ne modulation. The levers and dozer
function ensure “as new” levels of controllability are maintained throughout
the machine life.
Lift Capacity
The new Caterpillar D-Series has industry leading lift capacity matched with
outstanding stability in a compact radius package. This provides the on-site
versatility required to match the diverse and continually changing needs
of the customer.
Stick and Boom
A choice of standard or long, thumb ready sticks enable the customer to match
the machine’s digging envelope to their requirements. The boom options feature
a fi xed boom to maximize stability and lifting and a swing boom design that
maximizes reach. The swing boom also allows the operator to trench parallel
to tracks, dig close to structures and dig a box-section without repositioning
the undercarriage.
Engine
Clean, quiet and effi cient.
• Interim Tier 4 turbocharged engine
gives higher power and maintains strong
performance at high altitude.
• High digging forces give power through
even the most compacted ground with
smooth control and responsive hydraulics
that deliver productivity that our customers
demand.
• Load sensing hydraulics optimize the fl ow
of oil for smooth powerful performance
and increased fuel economy.
• Automatic engine idle lowers engine
revolutions when not in use to conserve fuel
and lower environmental noise/emissions.
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Work Tools
Cat work tools are matched to meet your application needs.
A wide range of tools have been developed and integrated into
the machine design to maximize machine performance and
deliver excellent value through high productivity and long life.
• Heavy Duty Buckets • Shears
• Heavy Duty Rock Buckets • Compactors
• Ditch Cleaning Buckets • Thumbs
• Hydraulic Hammers • Quick Couplers
• Augers
Couplers
To maximize performance, Caterpillar Pin-Grabber Quick
Couplers are compatible with all standard work tools, enabling
the operator to simply release one work tool and pick up another,
maximizing productivity. The couplers are available in hydraulic
and manual versions.
Auxiliary Hydraulics
The combined function high-pressure auxiliary lines and quick
connectors are fi tted as standard. This auxiliary system includes
a diverter valve which provides optimum performance when using
a one-way fl ow (hammer) or two-way fl ow (auger and thumb)
work tool. This feature allows the machine to adapt to a wide
variety of applications without re-confi guring the auxiliary lines.
Versatility is further enhanced with optional hydraulic lines enabling
the use of a hydraulic quick coupler. A secondary auxiliary
supply circuit for work tools utilizing a rotating or other mediumpressure circuit is also available as an optional attachment.
The auxiliary fl ow can be changed through the in-cab
LCD monitor from 64 L/min (16.9 gal/min) to 128 L/min
(33.8 gal/min). This allows the machine and work tool to
provide optimum performance and better match the customer’s
application requirements.
Thumbs
Caterpillar offers three varieties of thumbs: Stiff Link, Hydraulic
and Progressive Link. The stiff link thumb incorporates the
use of a fi xed link between the thumb and the stick, requiring
bucket curl to secure the load. The hydraulic thumb replaces
the stiff link with a cylinder that enables movement by both the
thumb link and the bucket to grab an object. A progressive link
thumb works much like a hydraulic thumb with more thumb
rotation by incorporating an additional link. This additional
rotation provides a better working range when securing material.
The three varieties come with two lengths, one compatible with
a pin-on bucket and one compatible with a pin-grabber coupler.
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Page 6
Undercarriage
Excellent stability.
The Cat 308D CR and 308D CR SB offer four different
track options to choose from allowing the correct machine
confi guration to suit the job.
Steel Track
The standard track offering is a 450 mm (18 in) triple grouser
track. Grease-lubricated track links, split master link and sealed
track rollers reduce owning and operating costs. Steel tracks
provide optimum stability when lifting over the side. This track
is also offered in a 600 mm (24 in) width that provides additional
stability and reduced ground pressure.
Rubber Belt
New to the D-Series is a 450 mm (18 in) width rubber belt.
This rubber belt is a traditional mini excavator attachment
providing minimal work site damage and the ability to work
on multiple surfaces. Construction of this rubber track consists
of embedded steel shanks which engage the sprocket and steel
cables ensuring rigidity and straight travel.
Segmented Rubber Track
The 450 mm (18 in) wide segmented rubber track incorporates
the best attributes of both the steel track and the rubber belt.
Stability is maximized due to the rigid rubber pads that bolt to
the track chain. The thick rubber pads are individually serviceable,
minimizing work site damage and provide long wear life.
Rubber Pads
Offered through the dealer parts system, the 450 mm (18 in)
wide shoe has four holes that attach rubber pads to the track.
This option will prevent damage to paved road surfaces
minimizing noise and vibration during travel with a standard
steel track system.
Blade Widths
The dozer blade is an important tool used for backfi lling
trenches, levelling, landscaping, lifting and jobsite clean-up.
There are two blade options available. The standard 2320 mm
(91 in) blade comes with a replaceable weld-on dozer wear
edge and the optional 2470 mm (97 in) blade comes with a
replaceable bolt-on dozer wear edge. Both blades are constructed
of hardened steel for longer life and extreme dozing ability.
Tie-down Points
Tie-down points are located on the blade and undercarriage for
easy and safe machine tie down for transportation.
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Page 7
Serviceability
Easy access and minimal maintenance requirements
keep your machine on the job.
Robust, reliable and easily serviceable are the key attributes
of Cat® Mini Hydraulic Excavators. Full steel body work
panels and protected front linkage lines are routed neatly out
of the way of potential damage above the boom. Easy access
to all daily service points are accessed through the rear hood
and side cover. A 500 hour engine oil change period lowers
operating costs and the Cat S•O•SSM points assist easy oil
sampling for preventative maintenance checks.
Product Link
The optional Product Link system simplifi es equipment fl eet
tracking. Using satellite or cellular technology, the system
automatically reports information such as location, machine
hours, active and logged service codes and security alarms.
Machine Security System
An optional Machine Security System (MSS) that utilizes
a programmable key system deters theft, vandalism and
unauthorized usage. MSS uses electronically coded keys
selected by the customer to limit usage by individuals or
time parameters.
Customer Support
Unmatched support makes
the difference.
Your Cat dealer is ready to assist you with your purchase
decision and everything after.
• Make comparisons of machines, with estimates of component
life, preventative maintenance and cost of production.
• Financing packages are fl exible to meet your needs.
• Your Cat dealer can evaluate the cost to repair, rebuild and
replace your machine, so you can make the right choice.
• A worldwide computer network enables the dealer parts
counter to locate nearly all parts.
• For more information on Cat products, dealer services and
industry solutions, visit us at www.cat.com.
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Page 8
308D CR/308D CR SB Specifications
Engine
Engine Mitsubishi 4M40 TL
Net power 41.5 kW 55.6 hp
Gross power 43 kW 57.6 hp
Meets U.S. EPA Interim Tier 4 emission
•
requirements
Net power rating per ISO 9249 and
•
EEC 80/1269
Weights
Operating weight
with cab
Operating weight with
cab (308D CR SB)
Weight with counterweight, rubber tracks,
•
bucket, operator, full fuel and auxiliary lines
Weight varies depending on machine
•
confi guration
7850 kg 17,306 lb
8400 kg 18,519 lb
Engine Dimensions
Bore 95 mm 3.7 in
Stroke 100 mm 3.9 in
Displacement 2.83 L 173 in
3
Hydraulic System
Operating pressures
– equipment
Operating pressure
– travel
Operating pressure
– swing
Auxiliary circuit
– primary
Auxiliary circuit
– secondary
Digging force
– stick (standard)
Digging force
– stick (long)
Digging force
– bucket
280 bar 4,061 psi
320 bar 4,641 psi
240 bar 3,481 psi
128 L/min 33.8 gal/min
64 L/min 16.9 gal/min
39 kN 8,768 lb
35 kN 7,868 lb
60 kN 13,489 lb
Swing System
Machine swing speed 10 rpm
Boom swing – right 50 Degrees
Boom swing – left 56 Degrees
Centralized lubrication
•
Automatic swing brake, spring applied,
•
hydraulic release
Electrical System
Type
35-amp alternator
•
24-volt, Heavy Duty Batteries
•
Sealed electrical connectors
•
Service Refi ll Capacities
Cooling system 15.7 L 4.1 gal
Engine oil 12.5 L 3.3 gal
Fuel tank 125 L 33 gal
Hydraulic tank 83 L 21.9 gal
Hydraulic system 94 L 24.8 gal
Travel System
Travel speed – high 5 km/h 3.1 mph
Travel speed – low 3.1 km/h 1.9 mph
Max traction force 64.6 kN 14,523 lb
Max traction force
(308D CR SB)
Gradeability (max)
– high
•
Each track is driven by one independent
2-speed motor
•
Drive modules are integrated into the roller
frame for total protection
•
Straight line travel when tracking and
operating the front linkage simultaneously
64 kN 14,388 lb
35 Degrees
Sound Levels
Exterior Cab 98 dB(A)
Interior Cab 79 dB(A)
•
Operator sound pressure levels measured per
ISO 6396 (dynamic)
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Page 9
Dimensions
5
6
7 8
20
2
1
3
4
Standard Stick Long Stick Standard Stick Long Stick
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
Note: All working dimensions are with OSJ bucket.
Without shoe lug.
4090 mm 13'5" 4630 mm 15'2" 4180 mm 13'9" 4730 mm 15'6"
3650 mm 12'0" 4160 mm 13'8" 2990 mm 9'10" 3580 mm 11'9"
6190 mm 20'4" 6710 mm 22'0" 6900 mm 22'8" 7430 mm 24'5"
6340 mm 20'10" 6840 mm 22'5" 7100 mm 23'4" 7610 mm 25'0"
7340 mm 24'1" 7760 mm 25'6" 6610 mm 21'8" 6960 mm 22'10"
5310 mm 17'5" 5730 mm 18'10" 4640 mm 15'3" 4980 mm 16'4"
1670 mm 5'6" 2230 mm 7'4" 2880 mm 9'5" 3350 mm 11'0"
1290 mm 4'3" 1290 mm 4'3" 1310 mm 4'4" 1310 mm 4'4"
380 mm 1'3" 380 mm 1'3" 380 mm 1'3" 380 mm 1'3"
360 mm 1'2" 360 mm 1'2" 360 mm 1'2" 360 mm 1'2"
2590 mm 8'6" 2590 mm 8'6" 2590 mm 8'6" 2590 mm 8'6"
735 mm 2'5" 735 mm 2'5" 735 mm 2'5" 735 mm 2'5"
2910 mm 9'7" 2910 mm 9'7" 2910 mm 9'7" 2910 mm 9'7"
5810 mm 19'1" 5830 mm 19'2" 6450 mm 21'2" 6410 mm 21'0"
450 mm 1'6" 450 mm 1'6" 450 mm 1'6" 450 mm 1'6"
2320 mm 7'7" 2320 mm 7'7" 2320 mm 7'7" 2320 mm 7'7"
1760 mm 5'9" 1760 mm 5'9" 1760 mm 5'9" 1760 mm 5'9"
2630 mm 8'8" 2740 mm 9'0" 2270 mm 7'5" 2240 mm 7'4"
450 mm 1'6" 450 mm 1'6" 450 mm 1'6" 450 mm 1'6"
180° 180° 180° 180°
130 mm 5" 130 mm 5" 150 mm 6" 150 mm 6"
————1010 mm 3'4" 1010 mm 3'4"
————635 mm 2'1" 635 mm 2'1"
18
9
19
10
14
22
23
308D CR 308D CR SB
11
17
12
13
21
16
15
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Page 10
308D CR/308D CR SB Specifications
Lift Capacities
2.0 m (6.56 ft) 3.0 m (9.84 ft) 4.0 m (13.12 ft)
308D CR
STICK –
Standard
SHOES –
450 mm (18")
308D CR
STICK –
Standard
SHOES –
600 mm (24")
308D CR
STICK –
Long
SHOES –
450 mm (18")
308D CR
STICK –
Long
SHOES –
600 mm (24")
308D CR SB
STICK –
Standard
SHOES –
450 mm (18")
308D CR SB
STICK –
Standard
SHOES –
600 mm (24")
308D CR SB
STICK –
Long
SHOES –
450 mm (18")
308D CR SB
STICK –
Long
SHOES –
600 mm (24")
* Limited by hydraulic capacity rather than tipping load.
The above loads are in compliance with hydraulic excavator lift capacity rating standard SAE J1097 DEC2005 and do exceed 87% of hydraulic lifting capacity or 75%
of tipping load. Blade down.
Weight of all lifting accessories must be deducted from the above lifting capacities.
Lifting capacities are based on the machine standing on a firm, uniform supporting surface.
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3.0 m
9.84 ft
Ground
Line
–3.0 m
–9.84 ft
3700 kg*
8,157 lb*
2250 kg*
4,960 lb*
3700 kg*
8,157 lb*
2250 kg*
4,960 lb*
3250 kg*
7,165 lb*
3250 kg*
7,165 lb*
6800 kg*
14,991 lb*
6800 kg*
14,991 lb*
6650 kg*
14,661 lb*
6650 kg*
14,661 lb*
3700 kg*
8,157 lb*
2250 kg*
4,960 lb*
3700 kg*
8,157 lb*
2250 kg*
4,960 lb*
3250 kg*
7,165 lb*
3250 kg*
7,165 lb*
5750 kg
12,677 lb
6300 kg
13,889 lb
5500 kg
12,125 lb
6050 kg
13,338 lb
2650 kg*
5,842 lb*
3700 kg*
8,157 lb*
1600 kg*
3,527 lb*
2650 kg*
5,842 lb*
3700 kg*
8,157 lb*
1600 kg*
3,527 lb*
2250 kg*
4,960 lb*
3650 kg*
8,047 lb*
2350 kg*
5,181 lb*
2250 kg*
4,960 lb*
3650 kg*
8,047 lb*
2350 kg*
5,181 lb*
3350 kg*
7,385 lb*
3700 kg*
8,157 lb*
3350 kg*
7,385 lb*
3700 kg*
8,157 lb*
3200 kg*
7,055 lb*
4700 kg*
10,362 lb*
3200 kg*
7,055 lb*
4700 kg*
10,362 lb*
2650 kg*
5,842 lb*
2850 kg
6,283 lb
1600 kg*
3,527 lb*
2650 kg*
5,842 lb*
3050 kg
6,724 lb
1600 kg*
3,527 lb*
2250 kg*
4,960 lb*
2850 kg
6,283 lb
2350 kg*
5,181 lb*
2250 kg*
4,960 lb*
3050 kg
6,724 lb
2350 kg*
5,181 lb*
2450 kg
5,401 lb
2650 kg
5,842 lb
2700 kg
5,952 lb
2850 kg
6,283 lb
2450 kg
5,401 lb
2500 kg
5,512 lb
2650 kg
5,842 lb
2750 kg
6,063 lb
2200 kg*
4,850 lb*
2700 kg*
5,952 lb*
2200 kg*
4,850 lb*
2700 kg*
5,952 lb*
1950 kg*
4,299 lb*
2650 kg*
5,842 lb*
1950 kg*
4,299 lb*
2650 kg*
5,842 lb*
1850 kg*
4,079 lb*
3700 kg*
8,157 lb*
1850 kg*
4,079 lb*
3700 kg*
8,157 lb*
3450 kg*
7,606 lb*
3050 kg*
6,724 lb*
3450 kg*
7,606 lb*
3050 kg*
6,724 lb*
2050 kg
4,519 lb
1850 kg
4,079 lb
2200 kg
4,850 lb
1950 kg
4,299 lb
1950 kg*
4,299 lb*
1800 kg
3,968 lb
1950 kg*
4,299 lb*
1950 kg
4,299 lb
1850 kg*
4,079 lb*
1600 kg
3,527 lb
1850 kg*
4,079 lb*
1700 kg
3,748 lb
1550 kg
3,417 lb
1600 kg
3,527 lb
1700 kg
3,748 lb
1700 kg
3,748 lb
850 kg*
1,874 lb*
1050 kg*
2,315 lb*
1350 kg*
2,976 lb*
850 kg*
1,874 lb*
1050 kg*
2,315 lb*
1350 kg*
2,976 lb*
900 kg*
1,984 lb*
1100 kg*
2,425 lb*
900 kg*
1,984 lb*
900 kg*
1,984 lb*
1100 kg*
2,425 lb*
900 kg*
1,984 lb*
1150 kg*
2,535 lb*
1500 kg*
3,307 lb*
3000 kg*
6,614 lb*
1150 kg*
2,535 lb*
1500 kg*
3,307 lb*
3000 kg*
6,614 lb*
1100 kg*
2,425 lb*
1400 kg*
3,086 lb*
2100 kg*
4,630 lb*
1100 kg*
2,425 lb*
1400 kg*
3,086 lb*
2100 kg*
4,630 lb*
Max Load Radius
Front Side
850 kg*
1,874 lb*
1050 kg*
2,315 lb*
1350 kg*
2,976 lb*
850 kg*
1,874 lb*
1050 kg*
2,315 lb*
1350 kg*
2,976 lb*
900 kg*
1,984 lb*
900 kg
1,984 lb
900 kg*
1,984 lb*
900 kg*
1,984 lb*
950 kg
2,094 lb
900 kg*
1,984 lb*
750 kg
1,653 lb
800 kg
1,764 lb
2150 kg
4,740 lb
850 kg
1,874 lb
850 kg
1,874 lb
2350 kg
5,181 lb
650 kg
1,433 lb
650 kg
1,433 lb
1600 kg
3,527 lb
700 kg
1,543 lb
700 kg
1,543 lb
1750 kg
3,858 lb
Maximum
ReachFront Side Front Side Front Side
5.94 m
19.49 ft
5.77 m
18.93 ft
3.26 m
10.70 ft
5.94 m
19.49 ft
5.77 m
18.93 ft
3.26 m
10.70 ft
6.46 m
21.19 ft
6.31 m
20.70 ft
3.96 m
12.99 ft
6.46 m
21.19 ft
6.31 m
20.70 ft
3.96 m
12.99 ft
6.73 m
22.08 ft
6.44 m
21.13 ft
3.40 m
11.15 ft
6.73 m
22.08 ft
6.44 m
21.13 ft
3.40 m
11.15 ft
7.25 m
23.79 ft
7.00 m
22.97 ft
4.10 m
13.45 ft
7.25 m
23.79 ft
7.00 m
22.97 ft
4.10 m
13.45 ft
10
Page 11
308D CR/308D CR SB Standard Equipment
Standard equipment may vary. Consult your Caterpillar dealer for details.
OPERATOR STATION
Cab fully glazed
Interior light
Pillar mounted windshield wiper and washer
Air conditioning, heater and defroster
Bolt-on FOGS capability
Openable upper front windshield
Removable lower front windshield
Openable skylight
Right and rear windows, polycarbonate
Sliding door window, tempered glass
Rear window, emergency exit
Seat, high back suspension, fabric covered,
4 way adjustment
Armrest, adjustable
Seatbelt 75 mm (3 in)
Coat hook
Cup holder
Literature compartment
Floor mat
Mirrors
AM/FM radio
Monitoring system, gauges and indicators
Neutral lever hydraulic lockout
Joystick pilot operated controls
Auxiliary control, joystick
(proportional control)
Travel control pedals with hand levers
Power supply, 12V
Dial type accelerator
Work light, cab-mounted
Cat HD batteries, (cold weather start)
Alternator 35 amp
Warning horn
24-volt electric starting
Boom swing control, joystick – mounted
(308D CR SB)
HYDRAULICS and POWER TRAIN
MMC 4M40-TL Diesel Engine
Certified to meet U.S. EPA Interim Tier 4
Extended life coolant –37° C (–34° F)
Variable displacement load sense hydraulics
Combined function auxiliary hydraulic circuit
Quick disconnect fittings
Automatic swing parking brake
Control pattern changer
Travel alarm
Straight line travel
Boom check valve
Two speed auto-shift travel
Automatic engine idle
Boom lowering device (accumulator)
Reverse swing damping valve 1500 m
(5,000 ft) altitude capability
UNDERCARRIAGE, BLADE and TRACK
Steel tracks, 450 mm (18 in)
Dozer blade with float function
Blade, weld on cutting edge
Grease lubricated track seals
Idler end track guiding guards
Hydraulic track adjusters
OTHER
Caterpillar Corporate “One Key” System
Fuel cap, lockable
Doors, lockable
Stick, standard, thumb ready
Bucket linkage with lifting eye
Additional counterweight
Toolbox
Antenna
Pictograph films
Boom with offset swing post (308D CR SB)
308D CR/308D CR SB Optional Equipment
Optional equipment may vary. Consult your Caterpillar dealer for details.
OPERATOR STATION
Headrest for KAB 528P/C, T8P/C
Cab fan
Sun visor
Light, boom-mounted
HYDRAULICS and POWER TRAIN
Cooling package, high ambient
Starting kit, cold weather
Coolant, extended life –50° C (–58° F)
Medium pressure auxiliary lines
Hydraulic quick coupler lines
UNDERCARRIAGE, BLADE and TRACK
Rubber tracks, 450 mm (18 in)
Segmented rubber track, 450 mm (18 in)
Bolt on rubber pads
Steel tracks, 600 mm (24 in)
Blade, bolt on cutting edge
OTHER
Stick, long
Guard – Front screen cab and canopy
Guard – Vandalism
Guard – Falling objects
Guard – Swivel
Rain protector, cab front
WORK TOOLS
Quick Couplers: Mechanical, Hydraulic,
Pin Lock and Wedge Style
Buckets: Heavy Duty, Heavy Duty Rock,
Ditch Cleaning and Pin Lock
Thumbs: Hydraulic, Full Rotation
and Stiff Link
Auger
Hammer
Shear
Compactor
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308D CR/308D CR SB
For more complete information on Cat products, dealer services, and industry solutions,
visit us on the web at www.cat.com
2008 Caterpillar Inc.
All rights reserved
Printed in the U.S.A.
Materials and specifi cations are subject to change without notice. Featured machines
may include additional equipment. See your Caterpillar 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,
16
are trademarks of Caterpillar and may not be used without permission.
AEHQ5959 (04-2008)
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