Milton CAT Feller Bunchers User Manual
511/521/522/532
®
Track Feller Bunchers &
Track Harvesters - ZTS (Zero Tail Swing)
511/521/522/532
Engine Model Cat
Gross Power @ 1800 rpm:
511 247 hp / 184.2 kW
521/522 284 hp / 211.8 kW
532 284 hp / 211.8 kW
®
C9 ACERT™ Tier II
Operating weights (w/o head):
511 24362 kg/53710 lb* 23790 kg/52440 lb**
521 27084 kg/59710 lb* 26050 kg/57440 lb**
522 30410 kg/67040 lb* 29806 kg/65710 lb**
532 31620 kg/69710 lb* 31450 kg/69340 lb**
* Track Feller Bunchers ** Track Harvesters
Cat® 511/521/522/532 Track Feller
Buncher/Track Harvester
Power Train
The Cat® C9 ACERT™ Tier II high torque engine
provides excellent power, fuel economy,
serviceability and durability. With 5% greater
fuel efficiency than its predecessor, and
meeting the Tier II emission standards, the Cat
C9 ACERT is a dependable performer.
Hydraulics
Closed Center hydraulic system with electronic
programmable controls that produces excellent
multi-function capability; dedicated pilot,
travel, implement and saw pumps.
Operator Comfort
The Cat 500 Series has a purpose built forestry
cab with heavy-duty guarding, meeting FOPS/
ROPS/OPS requirements. Designed with
operator friendly controls and ergonomics,
the cab gives excellent front, side and rear
visibility. Isolation mounted cab and engine
reduce sound levels and vibration for quiet and
comfortable operation.
Leveling System
The most reliable tilt mechanism in the
industry provides stability and productivity
even in the steepest applications for the 522
and 532 models.
Undercarriage
Cat track machines feature a rugged
undercarriage custom designed for reliable
operation in tough harvesting conditions, from
wet bottomlands to steep rocky slopes.
Contents
Powertrain 3
Hydraulic Packages 4
Operator Comfort 5
Leveling System 6
Undercarriage 7
Boom and Stick 8
Owning and Operating Costs 9
Serviceability 10
Customer Focus 11
Cat 511/521/522/532 Specifications 12
Standard and Optional Equipment 16
2
2
Versatility
Cat machines are available with factoryinstalled felling heads to meet your application
needs. Cat 500 series machines utilize high
pressure hydraulics and proven components.
All models are available with hot saw
intermittent or harvesting linkage fronts.
Serviceability
The hydraulically actuated clam-shell service
door provides full service access to daily
service points simplifying maintenance.
Regularly scheduled maintenance extends
machine service life and lowers overall
operating costs.
ForestPro Consulting
Cat’s ForestPro Consulting Services provides
application consulting, training, market
development and leading forestry system
solutions to meet dealer and customer needs.
Boom and Stick
Harvester and Feller Buncher Linkage
Arrangements are available for all models.
All boom and stick structures are stress
relieved for extended service life.
Owning and Operating Costs
Proven fuel efficiency combined with
easier access and extended service
intervals maximize uptime, reduce
operating costs and maximize productivity.
Customer Focus
Your Cat dealer offers a wide range of
services that can be set up to meet your
equipment needs. The dealer will help you
choose a plan that can cover everything
from machine and attachment selection,
service and maintenance, to replacement.
A robust undercarriage utilizes proven components, customized
for demanding forestry conditions. The unique boom design
provides industry leading lift capacity throughout full reach
range, a benefit in large timber.
Four models are available with just the right horsepower, track
size and hydraulic configurations to fit your application needs.
Powertrain
Built for power, reliability, low maintenance,
excellent fuel economy and low emissions.
Powerful Performance
The Cat® C9 electronically controlled ACERT delivers power
while meeting all current Tier II emission standards. All
models contain a fuel/water separator, engine air intake heater
and a dual-stage combination air cleaner with pre-cleaner.
High Capacity Cooling System
The side-by-side radiator/oil cooler gives excellent cooling
capacity for high production bunching and harvesting. The
optional on-demand Flexxaire™ fan activates only when
required and allows the cooling fan to purge debris from the
radiator area, keeping a cleaner cooling system. The IQAN
control system infinitely controls blade pitch angle to reduce
horsepower demand from the cooling package, and lower
operating costs..
Engine Oil
Caterpillar® engine oil is formulated to optimize engine life and
performance and is recommended for use in Cat diesel engines.
The engine oil change interval has been increased to 500 hours.
Service
The clamshell engine compartment provides easy access to
oil filters, oil dipstick, hydraulic fill pump and hoses reducing
maintenance time.
Low Exhaust Emissions
The Cat C9 ACERT engine is a low emission engine designed
to meet US EPA off-road Tier II emission regulations.
Pony Tank
An optional add on fuel tank is available for all 500 ZTS track
feller buncher and track harvester models. The additional
90 gallon fuel capacity allows for increased work hours and
productivity by reducing work stoppages needed for refueling
machines.
Batteries
An optional starting aid for colder climates is available for all
500 ZTS track feller buncher and harvester models. This option
provides two (2) additional batteries, a HD starter, and HD
battery cables.
3
Hydraulic Packages
Powerful hydraulic system combined with a powerful boom and
stick maximize productivity in any felling or harvesting job.
Electric Hydraulic Oil fill Pump
The hydraulic oil site gauge provides easy visibility to know
when hydraulic oil needs to be added. An easy accessible
service wand allows hydraulic oil to be pumped through the
hydraulic filtering system and into the tank. This reduces
maintenance time and helps to maintain oil cleanliness
requirements.
Variable Displacement Pump
Cat® 511 ZTS Track Feller Bunchers and Harvesters contain
a dedicated variable displacement pump for travel circuit and
implement functions, and a dedicated variable displacement
pump for felling attachments. Cat 521/522/532 ZTS Track
Feller Bunchers and Harvesters contain a dedicated 200 cc
variable displacement pump for travel circuit, a 190 cc variable
displacement pump for boom and implement functions, and
a dedicated 55 cc variable displacement pump for felling and
processing attachments. Optional hydraulic configurations
for dangle harvesting heads and intermittent saw heads are
available for all ZTS models.
Caterpillar® Hydraulic Oil
Provides maximum protection against mechanical and corrosive
wear in all hydraulic systems. It’s high zinc content reduces
wear, and extends pump life. Provided certain requirements are
met (e.g. S-O-SSM analysis every 500 hours), the hydraulic oil
change interval is extended from 2,000 hours to 4,000 hours.
Biodegradable Hydraulic Oil
The optional biodegradable hydraulic oil (HEES) is formulated
to provide excellent high-pressure and high-temperature
characteristics and is fully compatible with the all hydraulic
components. HEES is fully decomposed by soil or water
microorganisms, providing a more environmentally-sound
alternative to mineral-based oils.
ToughGuard Hoses
Abrasion resistant hoses along the boom and stick provide
strength and flexibility, increasing hydraulic hose service life.
The ToughGuard cover consists of a thin layer of UHMW
polyethylene bonded to the rubber cover, providing exceptional
abrasion resistance. In many applications, it eliminates the need
for external guarding.
4
™
Operator Comfort
The interior layout maximizes operator space, provides
exceptional comfort and reduces operator fatigue.
IQAN
IQAN display allows the operator
to continuously monitor the
operating systems of the machine.
This provides early warning for
potential problems, and allows the
operator to adjust control parameters maximizing performance
and productivity.
Control Convenience
Each control is placed within easy
reach of the operator. Joysticks
control the implement and
attachment functions, providing
Viewing
Cab design optimizes post structures and window placement
to provide excellent operator visibility to front, sides and rear.
Standard 1.25" thick “Margard” front window maximizes
operator protection. All purpose
built forestry cabs are designed
with heavy-duty guarding, meeting
FOPS/ROPS/OPS requirements.
Fresh Air
Large sliding side window with
screen to allow fresh air into cab.
easy operation.
Foot Pedals
Ergonomically located pedals with
side-by-side foot rests provide for
maximum operator comfort while
operating machine travel.
Skylight
A unique large polycarbonate
skylight provides excellent
upward visibility, and acts as an
alternate escape hatch.
Interior Operator Station
The operator station is
quiet with conveniently
placed controls, joysticks
and an ergonomically
designed seat reducing
operator fatigue.
Quiet Operation
Isolation mounted cab and engine reduces sound levels and
vibration for quiet and comfortable operation.
Large Storage Compartment
A large storage space behind the seat, provides
sufficient room for a lunch box, hard hats and work tools.
Electrical System
24-volt electrical system with
in-cab 24-12 volt converter,
dual in-cab 12 volt power points and one 24 volt power point.
Power is provided by two 12 volt maintenance free batteries and
95 amp alternator. An optional cold weather starting attachment
may be selected to provide two additional batteries, a HD starter,
and HD cables.
5
Leveling System
Tilting mechanism provides stability and
comfort in steep slope conditions.
Tilt Mechanism
With the most robust tilt mechanism in the industry, the ZTS
tilting models (522 and 532) have a patented 3-cylinder tilt
mechanism with simultaneous tilting forward and side-to-side.
Trunion cylinders are mounted on 2” (51 mm) steel plates and
transfer vertical loads down to the interface of the track frames
and carbody, putting the load into the track and ground.
Cylinders
Three-cylinder tilt mechanism with simultaneously
20 degree forward tilt and 11 degree side-to-side tilt.
Ground Clearance
ZTS machines have excellent ground clearance and
open carbody design. This provides increased mobility
by eliminating debris interference and other obstacles
encountered in rugged working conditions.
6
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