Construction and
Heavy Machinery
 
Wheel Loader
 

938G Series II Wheel Loader

Setting the standard for wheel loader productivity, durability, and comfort

 
 

Engine

Cato 3126B ATAAC diesel engine delivers stronger performance, faster response and excellent fuel economy. The 938G 11 meets all world-wide emissions regulations through 2006.

Power Train

Countershaft transmission with automatic shift capability provides on-the-go speed and direction changes. Electronic Clutch Pressure Control (ECPQ) delivers smoother shifts. New Variable Shift Control feature matches shift patterns to the application.

 

Cooling System

'New G Series 11 Cooling package reduces radiator plugging and contributes to increased fuel efficiency. Reverse air flow, an on-demand fan and a more accessible system keep the machine running cool in tough airborne debris applications.

Quick Couplers And Work Tools

Add versatility to your Series 11 machine with a factory installed Quick Coupler, plus Work Tools and Specialty Buckets offered by Caterpillar.

 
 
Serviceability

Easily perform daily maintenance up to 250-hour service intervals with ground level access to all major service points including sight gauges for level checks of engine coolant, hydraulic and transmission oil.

 
Environmental Features

The electronically controlled 3126B ATAAC engine in the 938G Series 11 has low exhaust emissions and meets Tier 2 regulations. Sampling valves and ecology drains help prevent fluid spills.

 
Operator Station
The 938G Series 11 has several cab enhancements including floor mounted pedals and a redesigned instrument panel.
 
Buckets and Ground Engaging Tools
Choose from General Purpose, Material Handling or Quick Coupler Buckets, matched with a variety of Ground Engaging Tool options to precisely fit your application.
 

Complete Customer Support

In addition to machine selection, Cat dealers offer a wide range of services, from purchase options to operator training, maintenance programs and parts support

 
 
Engine

The 938G II provides more power, excellent fuel economy, and reduced maintenance.

 
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.

 
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 IIITM Electronic Control Module.

 
Electronic Control Module

The Advanced Diesel Engine Module (ADEM 111) 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 IH allows full electronic integration of the engine and transmission for maximum power train efficiency.

 
Power Train

Advanced Caterpillar power train is reliable and fuel efficient

 
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 electrohydraulic 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 11, 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-0-S" 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.

 

Traction Control System.

The Caterpillar exclusive Traction Control System traction aid (attachment) has been improved for G Series 11. Sensors and connectors have been upgraded for longer life. A new lighted cab switch indicates when the TCS system is "on."

The Traction Control System measures axle shaft rotation and vehicle articulation. When a tire slips in poor underfoot conditions the system applies the service brake and torque is transferred through the differential to the opposite side wheel with better traction. TCS is fully automatic, works on all four wheels independently and combines the maneuverability of an open differential with the power of a limited slip.

 

Cooling system

New G Series II cooling package reduces radiator plugging and improves fuel efficiency.
 
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 11 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 4mm 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.

 
 

Environmental Features

Caterpillar cares about the environment and continues to develop innovative solutions

 
 

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 after cooling 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.

 
 

Buckets and Ground Engaging Tools

Choose from General Purpose, Material Handling or Quick Coupler Buckets, matched with a variety of Ground Engaging Tool options to precisely fit your application

 
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, Multipurpose, and Coal buckets are available for industry specific applications.

Bolt-On Cuffing 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. Comer 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.

 
 

Quick Couplers and Work Tools

Add versatility to your Series II machine with a factory installed Quick Coupler, plus Work Tools and Specialty Buckets offered by Caterpillar

 
 
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.
 
Coal Buckets. Flat floor for stockpile applications. Coat buckets include bolt-on cutting edges.
 
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.
 
Side-Dump Buckets. Permit loaders to operate in congested worksites and can also dump forward like a conventional bucket (3rd valve required).
 
Forks. Pallet forks are ideal work tools for material handling tasks. Available in a variety of tine lengths.
 
Log Forks With Top Clamp, For tree length or cut to length logs. Lumber and log forks are also available.
 
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.

 
 

Serviceability

The 938G Series II continues Caterpillar leadership in wheel loader serviceability

 
 

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 6000 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 fear 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.

 
 

Complete Customer Support

Cat dealer services help you operate longer with lower costs.

 
 

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-0-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.

 
 
 
 
 
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