938G Series II^Non-Current

Powerful Performance

The 3126B ATAAC engine delivers net power of 119 kW (160 hp), and meets EPA Tier 2 emissions standards. Its advanced system keeps fuel at low pressure in the fuel lines until it is injected into the cylinder. Fuel pressure is created hydraulically in response to a signal from the ADEM III™ Electronic Control Module.

Electronic Control Module

The Advanced Diesel Engine Module (ADEM III) fuel system is a proprietary electronic control module, which provides improved engine response and fuel efficiency, plus advanced diagnostics and reduced emissions. Altitude capability is increased to 3050 meters (10,000 feet) without derating. ADEM III allows full electronic integration of the engine and transmission for maximum power train efficiency.

Turbocharged, ATAAC

Turbocharging packs dense air into the cylinders for more complete combustion and lower emissions. Air-to-air aftercooling (ATAAC) provides a separate cooling system for intake manifold air. The ATAAC system reduces smoke and emissions by providing cooler inlet air for more efficient combustion.

Constant Net Horsepower

The 938G II's electronic engine is integrated with an on-demand cooling fan. The engine compensates for varying fan loads and provides constant net horsepower, regardless of operating conditions. A consistent level of “working” horsepower is provided and fuel consumption is reduced.

Oil Change Intervals

The engine oil change interval is increased to 500 hours (with CH-4 oil), reducing costs and downtime.

Electronic Power Shift Transmission

The electronic power shift transmission with automatic shift capability is a countershaft design built by Caterpillar. It is electronically controlled and allows full power shifts and directional changes. Fully modulated gear shifts contribute to operator comfort and increase component life.

Electronic Clutch Pressure Control (ECPC)

Senses input from both the transmission and the operator controls in the cab to modulate each individual clutch through a proportional electro-hydraulic valve. This results in smoother gear changes and improved shift quality. Energy is modulated into the clutches, resulting in longer clutch life.

Integrated Braking System

New for G Series II, IBS integrates downshifting and transmission neutralization into the left-hand brake pedal. IBS provides smooth, optimized transmission neutralizer performance with a greater range of adjustability. The Integrated Braking System also lowers owning and operating costs by reducing axle oil temperatures, which can extend service brake life.

Easy Service

Daily transmission oil level check is done from the ground through a well-protected sight gauge. An oil sampling valve allows quick, clean access to the transmission for S•O•SSM oil analysis.

Variable Shift Control

New transmission feature which allows the operator to select one of three different shift patterns based on the application and operating preferences. VSC reduces fuel consumption in many applications. In all modes, full machine power remains available for loading.

Limited Slip Differentials

Front and Rear Limited Slip Differentials are available as attachments. The differential clutch slows the slipping wheel and transfers torque to the slower turning wheel.

Reverse Flow

Air enters through the rear grill and exits out the top opening and side hood doors. Rear air flow picks up less debris from the ground, reducing plugging.

Improved System Access

The 938G II adds a swing-out grill, hydraulic oil cooler and air conditioner condenser for easier cleaning. Side panels open to allow access to both sides of all cores for cleaning. A heavy duty Airborne Debris Grill, with 4 mm perforations is available as an attachment.

On-Demand Fan

Electronically controlled, variable speed on-demand fan adjusts to meet the varying cooling requirements of the machine. Fan speed is determined by oil, coolant and inlet manifold temperatures. In cooler operating conditions, average fan speed is reduced, resulting in less fuel consumption, lower noise levels and less radiator plugging.

Unit Core Radiator

New unit core radiator with square wave shaped fins. Lower fin density (6 fins per inch) allows debris to pass through more easily.

Low Exhaust Emissions

The Cat 3126B ATAAC engine used in the 938G Series II is a low emission engine designed to meet Tier 2 emission regulations. It is electronically controlled, with air-to-air aftercooling for more efficient combustion and cleaner emissions.

Reduced Sound

The electronic on-demand fan automatically regulates fan speed depending on cooling requirements. The fan draws less horsepower in cooler ambient temperatures, which reduces fuel consumption. Sound levels are also reduced when the fan slows down. There is additional insulation around the engine to reduce sound levels.

Environmental Fluids

Extended Life Coolant/Antifreeze with anti-foaming and anti-corrosion properties provide extended service intervals (up to 6000 hours) and requires less frequent fluid changes and disposals. Air conditioning refrigerant is CFC-free.

Fewer Leaks And Spills

Oil sampling valves and pressure test ports are included for easy service diagnostics, with less chance of spills. Filters are positioned vertically and located for easy access, allowing for removal without fluid spillage.

Ecology Drains

Standard for the engine, transmission, hydraulics, radiator and fuel. Activating the valve allows fluid to be drained into a container without spillage. Axle oil ecology drains are an attachment and allow quicker oil changes with reduced spillage.

Rebuildable Components

Many major components are designed to be rebuilt. Worn components can be remanufactured instead of thrown out.

1 Steering

Low effort hand metering unit steering. Tilt steering column helps fit the wheel to the operator. Load sensing steering directs power through the steering system only when needed. When not steering, more engine power is available to generate rimpull, breakout and lift forces.

2 Excellent Visibility

The front window provides remarkable forward and peripheral viewing, including the machine wheels and bucket corners. Bonded glass in the windshield eliminates frame obstructions. The sloping hood provides excellent visibility to the rear of the machine.

3 Finger Tip Controls

New pilot-assisted hydraulic implement controls deliver comfortable, low-effort operation. Single lever joystick and lift lever F-N-R switch are available as attachments.

4 New Instrument Cluster

Gauges, status indicators and alert indicators are now centrally located. 3-level warning system monitors key functions. The system alerts the operator of immediate or impending problems with engine oil pressure, parking brake, fuel pressure, electrical system, brake oil pressure, hydraulic oil temperature, transmission filter bypass, engine inlet manifold temperature, primary steering oil pressure and the air inlet heater. LED warning indicators with no bulbs to replace.

5 Cab Access

Left and right side doors swing open 180 degrees and latch for optimal ventilation, visibility and communication to ground level. Left and right side sliding windows are available as an attachment. Full service platforms are provided on both sides of the machine for safety and easy maintenance access.

6 Floor Mounted Pedals

All pedals, including the new electronic governor, are floor mounted for greater operator comfort. Left pedal incorporates the new Integrated Braking System that combines service brake, transmission neutralizer and downshift functions.

7 Generous Storage Space

Compartments for lunchbox, coolers and cups.

8 Seat Options

The standard cloth and vinyl seat adjusts 6 ways. A new Caterpillar Contour air suspension seat (attachment) provides increased operator comfort with 6-way adjustment and automotive-style lumbar support.

9 Electronic Autoshift Control

Set for manual or one of two fully automatic shifting modes.

10 Ride Control System Switch

Attachment that reduces fore and aft pitch for a smoother, more comfortable ride. Allows the selection of three different modes: Off - always off service. On - always in service. Auto - the system is automatically actuated when the machine travels at a speed greater than 9 km (6 mph).

11 Transmission Neutralizer Lockout Switch

Rocker switch that locks out the neutralizer. Defaults back to neutralizer "on" upon machine start up.

12 Variable Shift Control

Allows the operator to select three different shift patterns based on application and working preferences. Normal, Economy and Aggressive modes. Lowers sound levels and fuel consumption and provides smoother shifts.

Radios

12-volt converter (5-amp), speakers, antenna, wiring and brackets for entertainment radio installation. Factory installed AM/FM/Cassette radio is now available as an attachment.

General Purpose Buckets

Perform well in a broad range of applications including excavation, stockpiling and dozing. Proven shell and tine construction. GP buckets accept standard Caterpillar bolt-on cutting edges or bolt-on teeth. Four basic bucket sizes are available. Buckets are rebuildable.

Material Handling Buckets

Flat floor Opti-Profile designs for free-flowing material (stockpile applications). Two basic bucket sizes are available. Uses Corner Guard System bolt-on edges.

Quick Coupler Buckets

General Purpose profile, compatible with factory installed horizontal pin-lock quick coupler. Three sizes available.

Specialty Buckets

Refuse, Multi-Purpose, and Coal buckets are available for industry specific applications.

Bolt-On Cutting Edge

Reversible, for superior strength and wear life. Standard, Heavy-duty edge, (providing 50% more wear life) or Abrasion Resistant Material (ARM) edge are available. Corner Protectors complete the system.

Bolt-On Teeth

Two-bolt corner adapter is securely attached to prevent shifting. Bolt-on two-strap center adapters. Seven tip options are available with heavy-duty retention system.

Bolt-On Teeth and Edge Segments

Standard reversible segments protect the base edge between teeth, and eliminate scalloping. Heavy-duty reversible segments (providing 50% more wear life) are also available.

Rear Wear Plates

Replaceable rear wear plates provide bucket bottom protection.

1 Quick Couplers

Provide outstanding versatility and allow one machine to perform a wide variety of tasks. Factory installed, with steel hydraulic lines and a clean routing down the lift arms. In-cab electric actuation, with safety lock-out switch. Horizontal pin-grabber design.

2 Coal Buckets

Flat floor for stockpile applications. Coal buckets include bolt-on cutting edges.

3 Woodchip Buckets

Are specially designed to load woodchips, and other light materials. Flat floor. Bolt-on cutting edges are standard. Screens help visibility when loading.

4 Side-Dump Buckets

Permit loaders to operate in congested worksites and can also dump forward like a conventional bucket (3rd valve required).

5 Forks

Pallet forks are ideal work tools for material handling tasks. Available in a variety of tine lengths.

6 Log Forks With Top Clamp

For tree length or cut to length logs. Lumber and log forks are also available.

7 Material Handling Arm

Material handling arm with adjustable lengths and load capacities can serve as a crane on the jobsite.

Plows

Hydraulic reversible plows angle 30°, left or right. This reversing action is ideal for cleaning applications on mountain roads, airports, parking lots, plant facilities, etc.

A complete range of Work Tools are available from your Caterpillar dealer.

Ground Level Maintenance Points

All service points, including color-coded S•O•S sampling ports are accessible from ground level. Remote grease lines culminate in two convenient central lube banks in the right hitch area.

Sight Gauges

For the transmission oil, hydraulic oil and radiator coolant are easy to see and eliminate the risk of contaminants entering the system during daily checks.

Engine Compartment

Access is convenient through service doors and side panels that can be quickly opened.

Non-Metallic Hood

Tilts for full access to engine, cooling system and major components. An electric screw-jack, with manual backup, tilts the hood up to 70 degrees.

Ecology Drains

For engine, transmission and hydraulic oil, reduces spills when draining fluids. Axle oil ecology drains are available as an attachment.

Electric Fuel Priming Pump

A new electrically actuated fuel priming pump simplifies fuel filter changes.

Engine Oil Change Intervals

Are every 500 hours with the use of CH-4 oil.

Coolant

System is factory filled with Caterpillar Extended Life Coolant, which can provide up to 6,000 hours between change intervals.

Remote Pressure Taps

Are available as an attachment to make transmission diagnostics even easier.

Brake Wear Indicators

Inboard indicator allows a service technician to measure and track brake wear.

Batteries

Two maintenance-free batteries are located in a built-in battery box in the left rear frame with a sealed lid to keep moisture out.

Caterpillar Monitoring System (CMS)

Provides machine performance feedback, along with diagnostic codes, which a service technician can use to quickly troubleshoot problems.

Product Link

Is a wireless communication system that provides two-way information flow between a machine and Caterpillar dealers and customers. Machines are fitted with a data module, wiring, and an antenna. The system up-links via satellite to the Caterpillar network and PC software. Product Link eliminates trips to obtain data, allows more effective maintenance scheduling and can identify unauthorized machine usage.

Product Link 201

Is available as a factory installed attachment and offers:
• Service meter hour update (one per day)
• Machine location update (four times a day)
• Mapping and route planning features
• DBS machine usage file integration
• Product Watch (configurable parameters for machine location and time operation)
• Event/diagnostic monitoring
• E-mail/pager alerts (interfaces with DBS Robot/Alert function)

Product Link 151

Is available as a dealer installed option and offers many of the PL-201 features.

Machine Security System

A programmable system (attachment) to manage machine access and restrict unauthorized usage. Special Machine Security System keys can be programmed (using Caterpillar Electronic Technician) to deny access during specific times or days of the week.

Machine Selection

Make detailed comparisons of the machines under consideration before purchase. Cat dealers can estimate component life, preventive maintenance costs and the true cost of lost production.

Purchase

Look past initial price and consider the many financing options available as well as day-to-day operating costs. Consider the dealer services that can be included in the cost of the machine to yield lower equipment owning and operating costs over the long run.

Customer Support Agreements

Cat dealers offer a variety of product support agreements and can develop a plan that meets your specific needs. These plans can cover the entire machine, including attachments, to help protect your investment.

Parts Support

You will find nearly all parts at our dealer parts counter. Cat dealers use a worldwide computer network to find in-stock parts to minimize machine downtime.

Operation

Improving operating techniques can boost your profits. Your Cat dealer has training videotapes, literature and other ideas to help you increase productivity.

Maintenance Services

Choose from a variety of maintenance services when purchasing your machine. Repair option programs guarantee the cost of repairs up front. Diagnostic programs such as S•O•S and Coolant Sampling help avoid unscheduled repairs.

Component Replacement

Repair, rebuild or replace? Caterpillar offers a line of genuine remanufactured components, which can help lower repair costs. Your Cat dealer will help you evaluate the cost involved so you can make the right choice.

www.CAT.com

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