How it Works
Milton CAT
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325D FM
User Manual
24 pgs1.15 Mb0
Table of contents
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Milton CAT 325D FM User Manual

®
®
Engine
Engine Model Cat®C7 ACERT™ Net Flywheel Power 152 kW 204 hp
Weights
• Operating weight with front linkage, without bucket or grapple.
325D FM
Forest Machine
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325D FM Forest Machine
The D Series incorporates innovations for improved performance, rugged durability and maximum productivity.
Caterpillar®Grapples
Cat®Log Loading Grapples combined with Cat Forest Machines make the 325D FM flexible, versatile and efficient enough, allowing you to maximize
productivity on your forestry job. pg. 12
Versatility
Designed and purpose-built to meet diverse forestry applications, the 325D FM can help improve productivity in various forestry and millyard
applications. pg. 11
Operator Comfort
Spacious purpose built forestry cab with excellent sightlines to the work area with 8 lights and all scratch resistant polycarbonate windows. Certified FOPS to ISO 8084 and SAE 1084, certified OPS to ISO 8083 and SAE J231, certified FOGS to ISO 10262 and SAE J1356, certified TOPS to OR-OSHA code 437-007-0775 TOPS and WCBG602/
G603/G604/G608 compliant. pg. 6
Hydraulics
Forest Machine hydraulic systems are designed to provide reliability, outstanding controllability and proven performance in various forestry
applications. pg. 5
Power Train
The Cat®C7 with ACERT™ Technology gives the 325D FM exceptional power and fuel efficiency unmatched in the industry. The C7 meets U.S. EPA Tier 3
emissions requirements. pg. 4
Customer Focus
Down time is minimized by the utilization of a worldwide computer network that can help find in-stock parts and minimize your down time. Your Cat dealer can also offer a wide range of other services that can be set up to meet your equipment needs. The dealer will help choose the plan that can cover everything from machine and attachment selection to
replacement. pg. 15
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Serviceability
The new FM cooling package provides easy access to all radiator cores for faster cleanouts. Regularly scheduled maintenance extends machine service life and lowers overall operating costs.
pg. 14
Owning and Operating Costs
Proven fuel efficiency combined with easier access and extended service intervals maximize uptime, reduce operating costs and maximize
productivity. pg. 13
Undercarriage
Heavy Duty link assemblies provide toughness and durability. The FM track will maximize undercarriage life and
minimize operating costs. pg. 10
Guarding
Factory forestry cab guarding, shoe support guards and heavy-duty access doors help extend component life, reduces downtime and helps to protect
your forestry machine investment. pg. 9
Structures
Purpose-built carbody design uses the most advanced manufacturing processes, ensuring durability and reliability in the
most rugged forestry applications. pg. 8
Cat C7 ACERT™. The Cat
®
C7 with ACERT™ Technology gives the 325D FM exceptional power and fuel efficiency unmatched in the industry. The C7 meets U.S. EPA Tier 3 emissions requirements. The forestry designed hydraulics give the 325D FM exceptional power, efficiency and controllability unequaled in the industry for consistently high performance in all forestry applications.
Performance. The 325D FM is
equipped with the C7 ACERT engine, which provides 12% more horsepower as compared to the 3126B ATAAC HEUI engine.
Automatic Engine Speed Control.
The two-stage, one-touch control maximizes fuel efficiency and reduces sound levels.
ADEM™ A4 Engine Controller.
The ADEM A4 electronic control module manages fuel delivery to get the best performance per liter of fuel used. The engine management system provides flexible fuel mapping, allowing the engine to respond quickly to varying application needs. It tracks engine and machine conditions while keeping the engine operating at peak efficiency.
Electronic Control Module.
The Electronic Control Module (ECM) works as the “brain” of the engine’s control system, responding quickly to operating variables to maximize engine efficiency. Fully integrated with sensors in the engine’s fuel, air, coolant, and exhaust systems, the ECM stores and relays information on conditions such as RPM, fuel consumption, and diagnostic information.
Fuel Delivery. The Cat C7 ACERT
features electronic controls that govern the fuel injection system. Multiple injection fuel delivery involves a high degree of precision. Precisely shaping the combustion cycle lowers combustion chamber temperatures, generating fewer emissions and optimizing fuel combustion. This translates into more work output for your fuel cost.
Cooling System. The cooling fan
is directly driven from the engine. An optional programmable reversible fan allows for radiator blowout, to increase service intervals and to maintain engine operational temperatures. The optimum fan speed is calculated based on the target engine speed, coolant temperature, hydraulic oil temperature and actual fan speed. The Cat C7 ACERT delivered a completely new layout that separates the cooling system from the engine compartment.
Air Cleaner. The radial seal air filter
features a double-layered filter core for more efficient filtration and is located in a compartment behind the cab. A warning is displayed on the monitor when dust accumulates above a preset level.
Noise Reduction Technologies.
The engine mounts are rubber-isolating mounts matched with the engine package. Further noise reduction has been achieved through design changes to the isolated top cover, oil pan, multiple injection strategy, insulated timing cover, sculpted crankcase and gear train refinements.
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Power Train

The Cat®C7 has exceptional power and fuel efficiency unmatched in the industry for consistently high performance in both forestry and millyard applications.
Component Layout. The 325D FM
hydraulic system and component locations have been designed to provide a high level of system efficiency. The main pumps, control valves and hydraulic tank are located close together to allow for shorter tubes and lines between components that reduce friction loss and pressure drops in the lines. The layout further provides greater operator comfort by placing the radiator on the cab side of the upper structure.
This allows incoming air to enter the engine compartment from the operator side and hot air and corresponding engine sound to exit on the opposite side away from the operator. This reduces engine compartment heat and sound being transmitted to the operator.
Pilot System. The pilot pump is
independent from the main pumps and controls the front linkage, swing and travel operations.
Hydraulic Cross Sensing System.
The hydraulic cross sensing system improves productivity with faster implement speeds and quicker, stronger pivot turns.
Boom and Stick Regeneration Circuit.
Boom and stick regeneration circuit saves energy during boom-down and stick-in operation which increases efficiency, reduces cycle times and pressure loss for higher productivity, lower operating costs and increased fuel efficiency.
Fine Swing Control. Standard fine swing
control cushions start and stop for better implement control.
Controllability. The hydraulic system
offers precise control to the 325D FM reducing operator fatigue, improving operator effectiveness and efficiency, which ultimately translates into enhanced performance.
Auxiliary Hydraulic Valve. The auxiliary
valve is standard on the 325D FM. Control Circuits are available as attachments, allowing for operation of high and medium pressure tools such as grapples.
Hydraulic Cylinder Snubbers.
Snubbers are located at the rod-end of the boom cylinders and both ends of the stick cylinders to cushion shocks, reduce sound and increase cylinder life, increasing uptime and productivity.
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Hydraulics

Cat®hydraulics provide the power and control needed for a variety of applications.
Operator Station. The workstation
is spacious, quiet and comfortable, assuring high productivity during a long work day. Controls, joysticks and an ergonomically designed seat reduces operator fatigue.
Pre-Start Check. Prior to starting the
machine, the system will check for low fluid levels for the engine oil, hydraulic oil and engine coolant and warn the operator through the monitor in the event display area.
Monitor. The monitor is a full color
400
⳯ 234 pixels Liquid Crystal Display
(LCD) graphic display. The monitor angle can be adjusted to minimize sun glare and has the capability of displaying information 27 different languages.
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The purpose built forestry cab interior layout maximizes operator space, provides exceptional comfort, provides excellent sightlines and reduces operator fatigue.

Operator Comfort

Gauge Display. Three analog gauges,
fuel level, hydraulic oil temperature and coolant temperature, are displayed in this area.
Event Display. Machine information
is displayed in this area with the icon and language.
Multi-Information Display. This area
is reserved for displaying various information which is convenient for the operator. The “Cat” logo is displayed when no information is available to be displayed.
Seat. Seat provides a variety of
adjustments to suit the operator’s size and weight including fore/aft, height and weight. Wide adjustable armrests and a retractable seat belt are also included.
Joystick Control. Joystick controls
have low lever effort and are designed to match the operator’s natural wrist and arm position. The operator can operate joystick controls with an arm on the armrest and the horizontal and vertical strokes have been designed to reduce operator fatigue. Exclusive proportional control and push buttons are programmable to operator personal preferences, allowing maximum productivity.
Hydraulic Activation Control Lever.
For added safety, this lever must be in the operate position to activate the machine control functions.
Console. Redesigned consoles feature
a simple, functional design to reduce operator fatigue, ease of switch operation and excellent visibility.
Skylight. An enlarged skylight with
sunshade provides excellent upwards visibility.
Viewing. Cab design optimizes
post structures, and scratch-resistant polycarbonate window placement to provide excellent operator visibility to front, sides and rear. Forestry cab is designed with heavy-duty guarding, meeting FOPS/OPS/FOGS/TOPS and CB requirements.
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Rugged main frame design maximizes durability.
• Outer frame utilizes curved side
rails, which are di-formed for excellent uniformity and strength.
• Box-section channels improve upper
frame rigidity under the cab.
• Inverted U-channels span the width
of the main frame and are formed, rather than fabricated, for superior strength and reduced weight.
• Boom tower and main rails are
constructed of solid, high-tensile strength, steel plates.
• Boom foot and engine mount areas are reinforced for additional strength.
• Sheet metal supporting structure is improved by integrating the mounting into the upper frame structure.
Carbody Design. Advanced, reinforced,
purpose-built carbody design stands up in the toughest forest applications.
Carbody Structure. Wide, tall, and thick
carbody structure provides operating stability and durability while improving operation’s effectiveness.
• Upper structure weight and stresses are distributed evenly across the full length of the track roller frame.
• Smooth transitions and long welds help reduce stresses at the carbody­to-roller frame junctions for excellent durability.
• Robot welding helps ensure consistent, high-quality welds throughout the manufacturing process.
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Structures

Purpose-built forest applications with reinforced carbody, rugged swing bearing, heavy doors and extra guarding.
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