The Cat 938H - Tested And Proven - Ready To Work
- Validated components and technology
- Electronic systems monitor vital machine components
- Excellent uptime from the best dealer support network in the industry
- Unmatched genuine Cat parts availability
The 938H features many of the components designed and proven in various Caterpillar products - all contribute to the reliability of the 938H:
- Countershaft powershift transmission
- Individual component cooling system
ACERT™ TECHNOLOGYSince March 2003, ACERT Technology has been proving itself in on-highway trucks. More recently it has proven itself again in field tests of off-highway equipment. This technology allows Cat engines to meet durability and reliability expectations without sacrificing performance.
CATERPILLAR DESIGNED COMPONENTSComponents used to build Cat Wheel Loaders are designed and manufactured to Caterpillar quality standards to ensure maximum performance even in extreme operating conditions. Engine electronic control modules and sensors are completely sealed against moisture and dust. Deutsche connectors and electrical wire braiding ensure that electrical connections resist corrosion and premature wear. Hoses are engineered and manufactured for high resistance to abrasion, excellent flexibility and easy installation and replacement. Caterpillar® couplings use o-ring face seals to provide positive sealing for durable leak-free connections. Heavy duty components reduce the risk of leaks, corrosion and premature wear, increasing uptime and helping to protect the environment.
MONITORING PROGRAMSMonitoring product health is key to maintaining reliability of any equipment. Many programs are available on the 938H to help you track machine health.
Caterpillar Messenger DisplayThe 938H is equipped with the Caterpillar Messenger Display that keeps watch over the health of your loader while providing real-time diagnostic feedback. In the event of a system malfunction, Messenger will provide the operator with a description of the occurrence, and if serious enough, sound an audible alarm in addition to a flashing indicator light.
Product LinkStandard equipment on the 938H, this state-of-the art satellite technology enables Caterpillar dealers and customers to keep in touch with their machines. The system provides a two-way information flow between machine on-board systems and Caterpillar dealers/customers via the Cat Dealer Website and EquipmentManager.
EquipmentManagerEquipmentManager is a web-based application that uses key indicators from your equipment such as hours, location and diagnostic codes and combines it with powerful tools like mapping, maintenance and repair scheduling, and troubleshooting instructions. This application enables quick identification of actions required to maximize your equipment uptime and control owning and operating costs.
S•O•SSM ServicesKeep minor repairs from becoming major ones and avoid complete failures. By regularly taking samples from the ports provided, your Cat dealer tracks wear of components and parts, oil performance, and oil condition and uses that data to predict wear-related problems before they happen. Often a simple adjustment or replacement of a part, based on S•O•S reports, can keep a small problem from turning into a major repair - allowing your machine to be running when you need it, not waiting in the shop for service.
DEALER SUPPORTThe Caterpillar global network of independently-owned dealers is the best in the world at providing support to keep your loader up and running. Known for parts availability and technical expertise, Cat dealers are partners in your business.
Service CapabilitiesCat field service technicians have the experience and tools necessary to service your loader on site. Field service trucks are fully loaded with state-of-the-art tools and diagnostic equipment as well as specifications and schematics for every Cat machine. Technical experts at the dealership and Caterpillar are available to provide assistance to field service technicians when needed. When on-site repair isn't enough, Cat dealerships are fully-equipped to service your loader quickly.
Parts AvailabilityCaterpillar provides an unsurpassed level of personalized service for your wheel loader. With parts distribution centers throughout the world, most parts can be delivered in 24 hours.
Remanufactured PartsCat engines and major components are designed to be remanufactured and provide multiple life cycles. The Cat Reman program is more extensive than most rebuild programs. Components are actually remanufactured in the factory to original specifications with necessary product updates. Strict reuse guidelines and unparalleled quality control ensure that reman products provide the reliability and durability that you expect from Caterpillar. Reman products are stocked in distribution centers around the world and are ready to install to minimize downtime, maintain productivity and profitability.
Built Strong And Tough
- ACERT™ Technology maintains engine performance, efficiency and durability while reducing emissions
- Heavy duty components withstand all operating conditions
- Strong, solid structures are built to last
Cat C6.6 ACERTThe Cat C6.6 is a 6.6 liter (403 in3) displacement, in-line six cylinder engine. The C6.6 utilizes ACERT Technology, a series of Caterpillar engineered innovations that provides advanced electronic control, precise fuel delivery and refined air management, resulting in outstanding performance and lower emissions. The C6.6 with ACERT Technology offers a compact design with big, heavy duty engine features for outstanding durability, reliability and performance. The C6.6 incorporates a new cross flow cylinder head design, 4 valve head and an ADEM A4 electronic controller. The C6.6 also features a proven cylinder block, pistons and crankshaft.
Electronic Control ADEM A4The Advanced Diesel Engine Management - Electronic Control Module consistently monitors important engine conditions and functions. It uses sensors throughout the engine to regulate fuel delivery and all other engine systems that require input to manage load and performance. The ADEM A4 controller is the brain behind engine responsiveness, self-diagnosis, controlling emissions and fuel economy.
Air ManagementAir management is a key concept in optimizing engine performance and controlling emissions. Engines must breathe clean cool air in order to perform. To aid this, the C6.6 uses a turbocharger fitted with a smart waste gate to give precise and reliable control of the boost pressure. A new cross-flow design in the cylinder head facilitates air movement, while tighter tolerances between the piston and cylinder wall reduce blow by gases.
Fuel SystemThrough multiple injection fuel delivery, fuel is introduced in the combustion chamber in a number of precisely controlled microbursts. Injecting fuel in this way allows for precise shaping of the combustion cycle while reducing engine sound levels
Fuel PumpThe C6.6 uses an oil-lubricated high-pressure fuel pump to feed a common fuel rail. By using an oil-lubricated fuel pump, the C6.6 has been designed to be more tolerant of alternative fuels.
Fuel Priming PumpAn electrical fuel priming pump is located between the fuel tank and the combined water separator/primary fuel filter. The electric priming pump eliminates the need to pre-fill or manually prime filters after a change, thus reducing contamination and improving injector life.
Engine Idle ManagementThe Engine Idle Management System (EIMS) maximizes fuel efficiency and provides flexibility in managing idle speeds for specific application requirements. Four idle control speeds are available.
POWERSHIFT TRANSMISSIONThe 938H continues to use powershift transmission technology proven on previous series. The countershaft powershift transmission features heavy-duty components to handle the toughest applications. Built-in electronic controls enhance productivity and durability.
Control Throttle ShiftingControl Throttle Shifting regulates engine speed during high-energy directional and gear changes for smoother shifting and longer component life.
Electronic Clutch Pressure ControlElectronic Clutch Pressure Control (ECPC) system modulates clutches individually to improve shift quality, component life and operator comfort. Adjustment is simplified with all solenoid valves externally mounted on top of the transmission housing.
AXLESThe 938H axles are designed by Caterpillar for durability in all operating conditions. The front axle is rigidly mounted to the frame to support the weight of the wheel loader and withstand internal torque loads as well as external forces encountered throughout operation. The rear axle is designed to allow ± 12° oscillation. All four wheels remain on the ground over uneven terrain providing excellent stability and traction.
Integrated Braking SystemThe Cat exclusive Integrated Braking System reduces axle oil temperatures and improves transmission neutralizer smoothness. IBS has a direct impact on durability of the axles and brakes especially in applications involving long distances and/or heavy braking.
RADIATORBrazed aluminum construction provides a stronger joint for maximum durability and resistance to leaks. The 6-fins-per-inch design decreases the chance of blockage and plugging.
STRUCTURESThe articulated frame design of the 938H features a durable plate engine frame and two plate loader tower that is robotically welded. Robotic welding creates frame joints with deep plate penetration welds and excellent fusion for maximum strength and durability.
HitchThe distance between the upper and lower hitch plates is an important contributor to machine performance and component life. The Caterpillar hitch design provides excellent load distribution and bearing life. Both the upper and lower hitch pins pivot on double tapered roller bearings - improving durability by distributing both vertical and horizontal loads over a larger surface area. The wide opening also provides excellent service access.
Engine End Frame (EEF)The 938H uses a proven solid plate engine end frame which provides a strong, rigid structure that resists twisting and evenly distributes impact loads. The result is an extremely solid mounting platform for the engine, transmission, axle, ROPS and other accessories.
Non-Engine End Frame (NEEF)The non-engine end frame provides a solid mounting base for the front axle, lift arms, lift cylinders and tilt cylinder. The fabricated, two-plate loader tower design reduces material packing under the lift cylinders while absorbing the forces associated with loading, twisting and material handling.
CounterweightThe two-piece counterweight is integrated into the 938H design and provides added protection for the lights by incorporating them into the top of the structure.
LinkageThe 938H linkage is a single-tilt Z-bar design. Z-bar linkage generates excellent breakout force and good rack back angle for better bucket loading and load retention. Lift arms are solid steel, providing superior strength with an excellent front end viewing area. The proven design offers excellent dump clearance and reach.
Work Smart And Move More
- Hydraulics are easy to control with low effort
- Differential locks provide maximum traction in varying underfoot conditions
- Constant net horsepower across various applications
- Standard and optional features that maximize productivity
LOAD SENSING HYDRAULICSThe 938H features a load sensing hydraulic system that supplies flow and pressure for the implements only upon demand, and only in the amounts necessary to perform the needed work thus providing a more efficient loader. With the new S3PC Priority Proportional Pressure Compensation Valve, implement control is improved over the previous system - raise/lower and rack back/dump can be operated simultaneously. Operators will notice enhanced ease of operation, more rimpull into the pile and a 16% increase in lift force.
NEW! DIFFERENTIAL LOCKMaximize productivity with the new clutch type hydraulic locking front differential. This standard feature provides operators with the confidence to maneuver through poor underfoot conditions with 'on the fly' engagement. A Caterpillar exclusive, the optional automatic front/rear locking differential collects input from sensors throughout the loader and adapts tractive effort to meet operating requirements.
CONSTANT NET HORSEPOWEROn many competitive machines, gross horsepower is constant, meaning that net engine power available for actual work will vary based on demands made from parasitic sources, such as air conditioning or cooling fans. The Cat C6.6 engine is electronically configured to provide constant net horsepower at full parasitic load enhancing productivity and improving fuel efficiency.
On-Demand FanWith electronic control of the variable speed on-demand fan, temperature levels of the engine coolant, transmission oil, hydraulic oil and air inlet manifold are constantly monitored. This data is used to control and maintain fan speed at the level necessary to maintain normal system temperatures. Controlled fan speed improves fuel efficiency, lowers noise levels and reduces radiator plugging.
Isolated Cooling SystemThe 938H cooling system is isolated from the engine compartment by a non-metallic shield. The hydraulically driven, variable speed fan draws in clean air from the rear of the machine and exhausts it out the sides and top of the hood. The end results are optimal cooling efficiency, increased fuel efficiency, less radiator plugging and reduced operator sound levels.
COUNTERSHAFT POWERSHIFT TRANSMISSIONThe electronic countershaft powershift transmission with automatic shift capability is designed and built by Caterpillar. The very responsive, full-power speed and directional changes provide excellent cycle times and productivity.
Fuel Economy ModeMatch transmission shifting patterns to machine application requirements. The Fuel Economy Mode (within Messenger) provides operators with the ability to choose between three different shift modes in order to maximize shift quality and fuel efficiency.
RIDE CONTROLThe optional Ride Control System improves ride, performance and load retention when traveling over rough terrain. Operators gain confidence moving at higher speeds in load and carry operations decreasing cycle times and increasing productivity.
AUTOLUBEThe optional Caterpillar Autolube System provides precise, automatic lubrication of pins and bushings - during loader operation. Automatic lubrication reduces time spent on daily maintenance and downtime for unplanned repairs due to inadequate greasing - improving productivity.
Built For Your Operation
- The Cat Fusion interface provides coupler flexibility with performance virtually identical to pin-on.
- A variety of Cat Fusion buckets and work tools are available for many applications.
Cat Fusion™ Coupler SystemThe Fusion Coupler System provides unmatched versatility for Cat Wheel Loaders.The Fusion System offers exclusive benefits that no other coupler can provide, including:
PerformanceFusion couplers and tools eliminate performance-robbing offset, thus providing coupler flexibility with performance virtually identical to pin-on.
DurabilityThe patented locking system of Fusion pulls the tool tight, for a rock-solid fit over the life of your machine. No rattle, no wear, no problem.
VisibilityThe open design of Fusion maximizes visibility to the end of the fork tines and gives clear indication of the engaged status of the coupler.
FlexibilityOnly Caterpillar offers a coupler system, Cat Fusion, with complete interchangeability across machines from 924-972. Maximize your attachment investment, simplify your job site.
WORK TOOLS AND QUICK COUPLERSA variety of buckets and work tools are available as pin on or for use with the Fusion Coupler - straight from the factory or installed at the dealership - customizing the 938H for your applications.
General Purpose BucketsGeneral purpose buckets provide good all-around performance for stockpiling, rehandling, excavating and bank loading. A heavy duty general purpose bucket can be used for more aggressive applications.
Material Handling BucketsThe material handling bucket is a flat-floor bucket used for handling stockpiled materials such as aggregates or other easy-to-load materials requiring moderate breakout force.
Rock BucketsRock buckets are designed for face or bank loading in mining or quarry applications. The straight-edge rock bucket provides higher breakout force and increased dump clearance. The spade-edge rock bucket offers increased penetration in certain applications.
Coal BucketsCoal buckets maximize productivity in loading and stockpiling coal and other materials of similar density.
Waste BucketsWaste buckets are designed for long life in the harsh world of refuse applications. This high-capacity bucket is well-suited for loading, sorting and other transfer station work.
Woodchip and Clean-Up BucketsWoodchip and clean-up buckets are available for forestry and milliard applications.
Multi-Purpose BucketsMulti-Purpose Buckets have a unique four-way action that can load, strip topsoil, bulldoze, clamp pipe or large chunks of concrete, clean up debris, and many other tasks.
Side Dump BucketsSide Dump Buckets dump both to the front and to the side of the machine, an advantage when working in tight quarters, such as street work, tunnel construction and building levees.
ForksLogging, millyard and pallet forks are available for forestry and material handling applications.
Loader RakesLoader Rakes are durable, high-capacity tools for land clearing and site clean up. Rakes are available with or without top clamps and in quick coupler and pin-on models.
Material Handling ArmsMaterial Handling Arms move pipe, concrete blocks, highway dividers and other construction materials quickly and precisely.
BroomsBrooms equip Cat Wheel Loaders for clean up on a wide range of job sites and specialty cleaning tasks. Cat Angling brooms cast dirt and debris forward or to either side for efficient clean up. Pickup brooms feature an integral hopper to capture debris swept up by the rotating broom for later dumping.
PlowsAngle plows cast snow to whichever side needed, angling can be controlled hydraulically or manually. V-plows optimize snow removal operations with a heavy duty steel nose piece and divider to cut aggressively into heavy drifts and break up compacted snow. This plow is the perfect choice for road clearing and heavy snow removal.
OWNING AND OPERATING COSTS
The 938H - Best Value For Your Operation
- Sight gauges, grouped maintenance points, easy engine access, ecology drains, maintenance-free batteries - all simplify daily maintenance
- Electronic monitoring systems track product health to avoid unscheduled costly repairs
- Unsurpassed parts availability reduces downtime
- Excellent resale value provided by genuine Cat quality, outstanding dealer service and unmatched dealer support programs
- Caterpillar Financial Services and Cat dealers understand your business
ENGINE IDLE MANAGEMENT SYSTEMThe Engine Idle Management System (EIMS) maximizes fuel efficiency and provides flexibility in managing idle speeds for specific application requirements. Four idle control speeds are available.
Proper maintenance of your wheel loader can help control expenses and lower your owning and operating costs. The 938H provides unmatched serviceability by offering:
- Hydraulic service center
- Electric service center
- Airborne debris-resistant, swing-out grill provides more efficient airflow
- Well-protected, easily visible sight gauges
- Ground level maintenance points
- Easy access to engine compartment
- Ecology drains for simple and clean fluid drainage
- Brake wear indicators for ease of inspection
- Maintenance-free batteries
- Extended oil and filter change intervals
MONITORING SYSTEMSMonitoring product health simplifies maintenance planning and reduces costs.
MessengerMessenger offers the comfort of providing real-time, visual feedback on engine and machine operating conditions. It displays information on diagnostic codes, maintenance and system parameters.
Product LinkWith Product Link customers and dealers can remotely obtain machine diagnostics. The system provides updates on service meter hours, machine health and equipment location.
EquipmentManagerEquipmentManager uses key indicators from equipment such as hours, location and diagnostic codes and combines them with powerful tools like mapping, maintenance and repair scheduling as well as troubleshooting instructions. This application enables quick identification of actions required to maximize equipment uptime and control owning and operation costs.
Machine Security SystemStolen equipment equates to lost production and increased costs. Eliminate machine theft and unauthorized usage with the Cat Machine Security System (MSS). MSS is integrated into the machine's electronic system and can protect most brands of equipment by requiring a uniquely coded key to start the machine.
S•O•S ServicesManaging component life and machine availability decreases downtime while improving your productivity and efficiency. S•O•S Services can help you do that. Regular fluid sampling is used to track what is going on inside the equipment. Wear-related problems are predictable and easily and quickly repairable. Maintenance can be done according to your schedule, resulting in increased uptime and flexibility in maintenance and repair before failure.
PARTS AVAILABILITYCaterpillar provides an unsurpassed level of personalized service for your wheel loader. With parts distribution centers worldwide, most parts can be delivered in 24 hours. Easy access to parts reduces downtime.
RESALE VALUEOwning quality equipment is a very important factor in maintaining resale value. Cat not only supplies quality equipment but also provides product and dealer support to maintain the reliability and durability of your machine.
Easy To Maintain - Easy To Service
- Grouped service points and sight gauges for easy daily maintenance
- Convenient access to engine compartment for excellent serviceability
- Swing-out grill and cooling cores for easy cleaning
- Electronic systems to monitor product health
HYDRAULIC SERVICE CENTERTransmission and hydraulic oil filters are located in the Hydraulic Service Center, behind the hinged, right-side access ladder. The hydraulic oil tank can be drained from this location using the access port.
ELECTRIC SERVICE CENTERA lockable compartment located just below the left side access platform contains key electrical components such as the remote jump-start receptacle, battery disconnect switch, circuit breakers and hood actuation switch. The maintenance free batteries are conveniently located under the electric service center.
NEW! MULTI-PIECE AXLEWith the introduction of Caterpillar's new multi-piece axles, service brakes and final drives are located outboard and provide easy access when service is required.
GROUND LEVEL GREASE POINTSGrease fittings are grouped on the right side of the machine in two convenient locations thus facilitating easy lubrication of vital components throughout the machine.
AUTOLUBEReduce time spent on daily maintenance and downtime for unplanned repairs due to inadequate greasing with the optional Caterpillar Automatic Lubrication System. Precise lubrication of pins and bushings at specific intervals improves component wear and reduces ground contamination from excessive greasing.
S•O•S SERVICESSampling valves on the 938H allow quick access to engine, transmission and hydraulic oils for S•O•S analysis. Oil change intervals and other services can be optimized according to your work schedule, reducing downtime and managing expenses.
REMOTE PRESSURE TAPSPressure taps for key systems are grouped and centrally located throughout the machine and help facilitate quick diagnostics.
BRAKE WEAR INDICATORSAxles are equipped with standard brake wear indicators, allowing a technician to easily determine when it is necessary to service the brakes.
SIGHT GAUGESWell-protected, yet easily visible sight gauges for the transmission, hydraulic oil and radiator coolant allow easy daily checks while reducing the risk of contaminants entering the systems.
ENGINE COMPARTMENT ACCESSA single mechanical lift cylinder with manual back-up opens the hood. The tilting hood provides excellent access to the engine and cooling compartments and if necessary, the entire hood can be removed with the built-in lift points.With the hood closed, quick checks of the engine oil level, coolant site gauge and air inlet indicator can be completed through the side service door.
ECOLOGY DRAINSEngine, transmission and hydraulic oils can be easily drained with standard-equipment ecology drains. An axle oil ecology drain is optional.
ELECTRIC PRIMING PUMPAn electric fuel priming pump located on the primary fuel filter base eliminates the need to pre-fill or manually prime filters after a change, eliminating engine contamination.
COOLING SYSTEMCooling system access for clean-out and maintenance is outstanding. The perforated and corrugated grill minimizes debris build-up and swings out for easy cleaning and access to the cooling cores. The full-width air conditioning condenser and oil cooler cores swing out 45° to allow easy cleaning of the rear radiator face. An access panel located on the right side of the radiator support structure provides access to the front face of the radiator and ATAAC cores for easy cleaning.
COMPLETE CUSTOMER SUPPORTCat field service technicians have the experience and tools necessary to service your loader on site. Technical experts at the dealership and Caterpillar can provide additional assistance to field service technicians as needed. When on-site repair isn't enough, Cat dealerships are fully equipped to service your loader quickly.
Work Comfortably And Efficiently
- Comfortable operation
- Excellent visibility
- Easy entry and exit
- Low effort steering
OPERATING ENVIRONMENTThe 938H provides operators with a comfortable operating environment with generous storage space and excellent visibility.
SeatThe durable seat adjusts 6-ways to accommodate all sized operators. The seat features an automotive style lumbar support for maximum comfort. The Cat C-500 Series Comfort air-suspension seat is optional as is a heated backrest and seat cushion.
Implement PodThe newly restyled implement pod provides superior comfort through the full length adjustable armrest. Standard transmission F-N-R switch allows operators to keep their hand on the implement control levers while making directional shifts. An optional joystick with integrated F-N-R switch is available and replaces the lift and tilt levers.
VISIBILITYThe 938H offers excellent visibility to the front and rear of the machine. Distortion-free flat glass stretches to the floor of the cab for excellent visibility to the bucket. Wet-arm wipers on both front and back keep the windows clean in any condition.
Rear Vision CameraAn optional rear vision camera is available to clearly monitor movement behind the wheel loader.
Lighting PackagesIn addition to the standard roading lights, optional lighting packages are available for low-light applications. Optional auxiliary halogen or High Intensity Discharge (HID) cab lights provide exceptional lighting for night work. A rotating beacon is available as a safety feature.
ENTRY AND EXITA ladder with aggressive tread pattern keeps debris build-up to a minimum. The ladder is at a 5° forward incline for easy entry and exit. The main cab door opens a full 180° and latches in place to allow safe navigation to the rear of the machine. The right side door opens 10°, or completely for secondary exit simply by pulling a pin. A full-length ladder on the right side facilitates safe exit if needed.
SteeringCaterpillar's low effort load sensing steering directs power through the steering system only when needed. The new hand metering unit and priority valve provide operators with full steering and multi-function capability a low engine rpm's. The combined steering column and instrument panel tilt for maximum operator comfort.
ControlsKey machine controls are conveniently located within arms reach and allow better efficiency while minimizing operator fatigue. A variety of machine controls are also contained within the Messenger display. By accessing various menus, an operator can tailor the machine to fit operating style and application. For multi-shift operations, personalized settings for each operator can be established and stored for maximum uptime and comfort.