988 Wheel Loader
Large Wheel Loaders
Details
Net Power - SAE J1349
541.0 HP
Engine Power - ISO 14396
580 HP
Gross Power - SAE J1995
588 HP
Overview
An industry leader—made better
Cat® Large Wheel Loaders are designed with durability built in, ensuring maximum availability through multiple life cycles. With optimized performance and simplified serviceability, our machines allow you to move more material efficiently and safely at a low cost per ton. Introduced in 1963, the 988 has been an industry leader for 60 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988 continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.
Benefits
BETTER FUEL EFFICIENCY
Utilizing Economy Mode helps save on fuel all while maintaining productivity
LOWER MAINTENANCE COST
Make regular maintenance more convenient with grouped service points
MORE PRODUCTIVITY
Deliver more productivity in most truck loading applications while using performance series buckets with increased capacities
LESS CO2 EMISSIONS
The 988 emits up to 19% less CO2 than the previous 988H.
Features at a Glance
- PROVEN RELIABILITY
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- Cat C18 engine is built and tested to meet your most demanding applications.
- Cat torque converter with lock-up clutch eliminates torque converter losses and lowers system heat.
- Maximum responsiveness with Steering and Transmission Integrated Control (STIC™).
- Moves more material more efficiently with improved power and control.
- Durable construction withstands the toughest loading conditions and multiple lifecycles.
- LONG TERM VALUE AND DURABILITY
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- Best-in-class transmission for long life and consistent, smooth shifting; specifically designed for mining applications.
- Advanced productivity electronic control strategy (APECS) transmission controls for greater momentum on grades.
- Positive flow control (PFC) hydraulic system increases efficiency, bucket feel, and responsiveness with consistent performance.
- Advanced filtration system for extended performance and reliability of the hydraulic system.
- Impeller clutch torque converter (ICTC) minimizes tire spin by allowing torque to adjust to underfoot conditions.
- PERFORMANCE AND PRODUCTIVITY
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- Improved cycle times and bucket fill factors with optional operator coaching.
- Optimized dig segment cycle with optional operator assist – tire slip prevention, auto set tires, and lift stall prevention.
- Superior digging, higher bucket fill factors, reduced dig times.
- Improved visibility over the top of the linkage.
- Up to 10% more payload per pass, higher efficiency, and improved pass match.
- Operators can now check tire pressure during operation with any change sending a fault code to VisionLink®, preventing premature tire failure.
- In-truck loading applications.
- Convenient, responsive, electro-hydraulic controls increase operator productivity.
- Integrated steering and transmission controls.
- PERFORMANCE WITH LESS FUEL
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- Economy mode optimizes engine speed control for reduced fuel consumption no matter if operating in manual throttle or throttle lock.
- Flow sharing hydraulics for full flow at reduced engine rpm.
- Fully integrated electronic engine controls make your fuel go farther.
- Engine idle shutdown for less fuel used while idling.
- Increased hydraulic speed and faster cycle times for decreased idle, decreased fuel burn, and increased efficiency.
- PRODUCTIVITY WITH TECHNOLOGY
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- Cat technologies developed to monitor, manage, and enhance your jobsite operations.
- Cat Payload provides accurate weighing* of the materials you are loading and hauling. Payload data is displayed in real-time to improve productivity and reduce overloading.
- Cat Detect enhances awareness of the environment around working equipment and provides alerts to help keep people and assets safe on the jobsite.
- Product Link™ wirelessly connects you to your equipment, giving you access to essential information you need to know to run your business.
- Gain valuable insight into how your machine or fleet is performing.
- Optional advanced productivity subscription provides comprehensive actionable information to help you manage and improve the productivity and profitability of your operations.
- SAFETY FIRST
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- Achieve precise positioning for easy loading in tight areas with 43 degrees of steering articulation.
- Precise machine control by load-sensing hydraulic steering system.
- Reduced stairway angles and standard stairway lighting provide reduced risk of slips, trips, and falls due to better visbility of the steps and stairway.
- Left- and right-hand stairs with 45-degree angle.
- Computerized monitoring system with warning indicators.
- Standard Cat Vision enhances visibility behind the machine, helping you work safely and confidently.
- Pressurized cabin with filtered air and reduced sound levels.
- SAVE ON SERVICE AND MAINTENANCE
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- 10% lower maintenance costs.
- Grouped service points provide easy access to critical daily service checks.
- Electro-hydraulic controls.
- Swing-out engine compartment service doors.
- Reduced waste with maintenance-free batteries.
- Ecology drains to prevent spilled contaminants and allow for easier service.
- Vehicle Information Management System (VIMS™) notifications to resolve problems before failure.
- Ground level access to transmission control valves.
- Longer life, rebuildability, and high resale value.
- OPERATOR COMFORT AND CONTROL
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- Best-in-class operator comfort and ergonomics.
- Cat Premium Plus seat with standard features including leather finish, forced air heating and cooling, two-way thigh adjustment, power lumbar and back bolster adjustment, and dynamic end dampening to provide total comfort throughout the workday.
- Easy-to-reach levers and seat-mounted implement pod to reduce fatigue.
- Ergonomic switch placement and displays with large, backlit switches and LED indicators.
- Two-position rocker switch activates the electro-hydraulic parking brake.
- Reduced vibrations from isolated cab mounts and seat air suspension.
- Automatic cab temperature controls.
- PURPOSE-BUILT SPECIALTY MODELS - BLOCK HANDLER
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- Delivers stability and durability with an optimized counterweight for block handling applications.
- A high rimpull powertrain features a torque converter and transmission specially designed for this application to maximize rimpull.
- An additional hydraulic valve with the quick coupler allows the operator to switch work tools and immediately lock the work tool during load and carry applications.
- Larger tilt and lift cylinders on the linkage help improve load control and ensure safe and long lasting operation.
- Ride control acts as a shock absorber, providing the operator with a smoother ride over rough terrain.
- PURPOSE-BUILT SPECIALTY MODELS - MILLYARD
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- Swing-out fan radiator design for easier service in high-debris millyard applications, reducing maintenance and service downtime.
- Auto reversing fan system to help dislodge debris and keep air flowing across the radiator cores.
- Ecology drains for ease of service and prevention of spilling potential environmental contaminants.
- Achieve precise positioning for easy loading in tight areas with 37 degrees of steering articulation.
- Millyard and logging forks are designed to move wood in the millyard.
- Woodchip buckets are designed with performance characteristics to bring productivity and fuel efficiency to load-and-carry work in the yard.
- Stress relieved lift arms increase durability and lengthen time to repair.
- PURPOSE-BUILT SPECIALTY MODELS - STEEL MILL
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- Durable and reinforced attachments for operator comfort, safety, and easy machine access.
- Radiator is designed for easy cleaning and to keep material from building up.
- Auto reversing fan and easy access to cooling cores keeps cab at comfortable temperature.
- Equipped with extra guarding and heat protection for critical machine functions.
- Flame resistant ecosafe hydraulic fluid available as an option.
- Performance series, serrated edge slag, straight edge slag, and slag buckets maximize material retention and minimize dig time.
Specifications
Full Specifications
- Engine
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Net Power - SAE J1349
541.0 HPEngine Power - ISO 14396
580 HPGross Power - SAE J1995
588 HPEngine Model
Cat® C18 ™Peak Power Speed
1500/rpmRated Speed
1700/minEmissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014Bore
5.7 inStroke
7.2 inDisplacement
1105.0 in³Peak Torque - 1,200 rpm
2230 lb/ftTorque Rise
58.0 %
- Operating Specifications
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Operating Weight
112574 lbRated Payload - Quarry Face
12.5 tRated Payload - Loose Material
16 tBucket Capacity Range
4.7-13 m3 (6.2-17 yd3)Cat Truck Match - Standard
770~772Cat Truck Match - High Lift
773~775
- Transmission
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Transmission Type
Cat planetary powershiftForward - 1
4.0 mile/hForward - 2
7.2 mile/hForward - 3
12.7 mile/hForward - 4
21.6 mile/hReverse - 1
4.7 mile/hReverse - 2
8.3 mile/hReverse - 3
14.4 mile/hDirect Drive - Forward 1
Lock-up disabledDirect Drive - Forward 2
7.8 mile/hDirect Drive - Forward 3
13.9 mile/hDirect Drive - Forward 4
24.4 mile/hDirect Drive - Reverse 1
5.0 mile/hDirect Drive - Reverse 2
8.9 mile/hDirect Drive - Reverse 3
15.8 mile/h
- Hydraulic System - Lift/Tilt
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Lift/Tilt System - Circuit
EH- Positive Flow Control, Flow SharingLift/Tilt System
Variable displacement pistonMaximum Flow at 1,400-1,860 rpm
153.0 gal/minRelief Valve Setting - Lift/Tilt
4757 psiCylinders, Double Acting - Lift, Bore and Stroke
210 mm × 1050 mm (8.7 in × 41.3 in)Cylinders, Double Acting - Tilt, Bore and Stroke
269 mm × 685 mm (8.7 in × 27 in)Pilot System
Variable displacement pistonRelief Valve Setting - Main
551 psi
- Hydraulic Cycle Time (1,400-1,860 rpm)
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Rack Back
4.5 sRaise
8.0 sDump
2.2 sLower Float Down
3.5 sTotal Hydraulic Cycle Time - Empty Bucket
18.2 s
- Hydraulic System - Steering
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Steering System - Circuit
Pilot, load sensingSteering System - Pump
Piston, variable displacementMaximum Flow
71.3 gal/minRelief Valve Setting - Steering
4351.0 psiTotal Steering Angle
86 °Steering Cycle Times - High Idle
3.4 sSteering Cycle Times - Low Idle
5.6 s
- Air Conditioning System
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Air Conditioning
The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes.
- Axles
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Front
FixedRear
TrunnionOscillation Angle
13 °
- Brakes
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Brakes
ISO 3450:2011
- Operator's Cab
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ROPS/FOPS
ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
- Service Refill Capacities
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Fuel Tank
188.0 gal (US)Cooling System
31.7 gal (US)Coolant (Validated by Test Cell Fill Quantities)
33 gal (US)Crankcase
15.9 gal (US)Diesel Exhaust Fluid Tank
8.7 gal (US)Transmission
31.7 gal (US)Transmission - Validated by Test Cell Fill Quantities
29 gal (US)Differential - Final Drives - Front
49.1 gal (US)Differential - Final Drives - Rear
49.1 gal (US)Hydraulic System Factory Fill
125.5 gal (US)Hydraulic System - Tank Only
63.4 gal (US)
- Sound Performance - Tier 4 Final/EU Stage V - Standard
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Operator Sound Level (ISO 6396)
72 dB(A)Machine Sound Level (ISO 6395)
111 dB(A)Note (1)
The operator sound pressure level was measured according to the test procedures and conditions specified in ISO 6396:2008. The measurement was conducted at 70 percent of the maximum engine cooling fan speed.Note (2)
Hearing protection may be needed when the machine is operated with a cab that is not properly maintained or when the doors or windows are open for extended periods or in a noisy environment.
- Dimensions (Approximate) - Standard Lift Linkage
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Ground to Top of ROPS
13.8 ftGround to Top of Exhaust Stacks
14.8 ftGround to Top of Hood
10.9 ftRear Axle - Centerline to Bumper
10.5 ftFront Axle Centerline to Bucket Tip
14.0 ftWheel Base
14.9 ftMaximum Overall Length
39.3 ftGround to Lower Hitch Clearance
1.9 ftClearance at Maximum Lift
11.9 ftB-Pin Height - Maximum Lift
18.0 ftMaximum Overall Height - Bucket Raised
24.5 ftReach - Maximum Lift
6.5 ft
- Dimensions (Approximate) - High Lift Linkage
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Ground to Top of ROPS
13.8 ftGround to Top of Exhaust Stacks
14.8 ftGround to Top of Hood
10.9 ftRear Axle - Centerline to Bumper
10.5 ftFront Axle Centerline to Bucket Tip
15.3 ftWheel Base
14.9 ftMaximum Overall Length
40.7 ftGround to Lower Hitch Clearance
1.9 ftClearance at Maximum Lift
13.3 ftB-Pin Height - Maximum Lift
19.3 ftMaximum Overall Height - Bucket Raised
25.8 ftReach - Maximum Lift
6.8 ft
- Buckets
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Bucket Capacities
4.7-13 m3 (6.2-17 yd3)
Equipment
- Standard Equipment
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NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
ELECTRICAL
- Alarm, back-up
- Alternator, single 150 amp
- Batteries, dry
- Converter, 10/15 amp, 24V to 12V
- Lighting system (halogen, work lights, access and service platform lighting)
- Starting and charging system, 24V
- Starter emergency start receptacle
- Starter lockout in bumper
- Transmission lockout in bumper
OPERATOR ENVIRONMENT
- Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings
- Air conditioner
- Cat Vision, rear vision camera system
- Cab, sound suppressed and pressurized, integrated rollover protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12-volt 5-amp) and power port
- Controls, lift and tilt function
- Heater, defroster
- Horn, electric
- Instrumentation, gauges: – Coolant temperature – Engine hour meter – Hydraulic oil temperature – Power train oil temperature
- Light, cab, dome
- Lunchbox, beverage holders
- Mirrors, rearview (externally mounted)
- Rimpull Control System
- Seat, deluxe
- Seat belt minder
- Seat belt, retractable, 76 mm (3 in) wide
- STIC Control System
- UV glass
- Transmission gear indicator
- Vital Information Management System (VIMS) with Graphical Information Display: External Data Port, Customizable Operator Profiles, Cycle Timer, Integrated Payload Control System
- Wet-Arm wipers/washers (front and rear): – Intermittent front and rear wipers
- Lights, directional
POWER TRAIN
- Brakes, oil-cooled, multi-disc, service/secondary
- Case drain screens
- Crankcase guard
- Electro hydraulic parking brake
- Engine, C18 MEUI diesel, turbocharged/aftercooled
- Ground level engine shutoff
- Turbine precleaner, engine air intake
- Radiator, Aluminum Modular Radiator (AMR)
- Starting aid, ether, automatic
- Throttle lock, electronic
- Torque converter, Impeller Clutch (ICTC) with Lock up clutch (LUC), Rimpull Control System
- Transmission, planetary powershift, 4F/3R electronic control
- Manual switch and automatic fuel priming
- Cat Production Measurement ready
OTHER
- Automatic bucket lift kickout/positioner
- Base machine price includes a rim allowance
- Hydraulically driven demand fan
- Couplings, Cat O-ring face seals
- Doors, service access (locking)
- Ecology drains for engine, radiator, hydraulic tank
- Fuel tank, 712 L (188 gal)
- Hitch, drawbar with pin
- Hoses, Cat XT™
- Hydraulic, steering and brake filtration/screening system
- Cat Clean Emission Module
- Oil sampling valves
- Premixed 50% concentration of extended life coolant with freeze protection to –34° C (–29° F)
- Rear access to cab and service platform
- Steering, load sensing
- Toe kicks
- Vandalism protection caplocks
- Optional Equipment
-
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
POWER TRAIN
- –50° C (–58° F) antifreeze
- Engine oil change system, high speed, Wiggins
- High ambient cooling – software
- Cat Production Measurement
OPERATOR ENVIRONMENT
- Cab precleaner
- AM/FM/CD/MP3 radio
- Satellite Sirius radio with bluetooth
- LED warning strobe
- CB radio ready
- Window pull down visor
- Handrail mounted mirrors
MISCELLANEOUS ATTACHMENTS
- Load and carry counterweight
- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Starting (extra starter plus two batteries), engine block heater 120V or 240V, heated fuel lines
- Aggregate Handler