988

988

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.

Net Power - SAE J1349:2011 401 kW
Engine Power - ISO 14396:2002 432 kW
Gross Power - SAE J1995:2014 439 kW

Technicial Specifications

Engine
Net Power - SAE J1349:2011 401 kW
Engine Power - ISO 14396:2002 432 kW
Gross Power - SAE J1995:2014 439 kW
Engine Model Cat® C18 ™
Peak Power Speed 1500/rpm
Rated Speed 1700/min
Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards, Brazil MAR-1 and China Nonroad Stage IV emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, and U.S. EPA Tier 2 and EU Stage II
Bore 145 mm
Stroke 183 mm
Displacement 18.1 l
Peak Torque - 1,200 rpm 3023 N·m
Torque Rise 58 %
Operating Specifications
Operating Weight 51062 kg
Rated Payload - Quarry Face 11.3 t
Rated Payload - Loose Material 14.5 t
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Cat Truck Match - Standard 770～772
Cat Truck Match - High Lift 773～775
Transmission
Transmission Type Cat planetary powershift
Forward - 1 6.5 km/h
Forward - 2 11.6 km/h
Forward - 3 20.4 km/h
Forward - 4 34.7 km/h
Reverse - 1 7.5 km/h
Reverse - 2 13.3 km/h
Reverse - 3 23.2 km/h
Direct Drive - Forward 1 Lock-up disabled
Direct Drive - Forward 2 12.5 km/h
Direct Drive - Forward 3 22.3 km/h
Direct Drive - Forward 4 39.3 km/h
Direct Drive - Reverse 1 8 km/h
Direct Drive - Reverse 2 14.3 km/h
Direct Drive - Reverse 3 25.5 km/h
Hydraulic System - Lift/Tilt
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Lift/Tilt System Variable displacement piston
Maximum Flow at 1,400-1,860 rpm 580 l/min
Relief Valve Setting - Lift/Tilt 32800 kPa
Cylinders, 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 piston
Relief Valve Setting - Main 3800 kPa
Hydraulic Cycle Time (1,400-1,860 rpm)
Rack Back 4.5 s
Raise 8 s
Dump 2.2 s
Lower Float Down 3.5 s
Total Hydraulic Cycle Time - Empty Bucket 18.2 s
Hydraulic System - Steering
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Maximum Flow 270 l/min
Relief Valve Setting - Steering 30000 kPa
Total Steering Angle 86 °
Steering Cycle Times - High Idle 3.4 s
Steering Cycle Times - Low Idle 5.6 s
Air Conditioning System
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
Front Fixed
Rear Trunnion
Oscillation Angle 13 °
Brakes
Brakes ISO 3450:2011
Operator's Cab
ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Service Refill Capacities
Fuel Tank 712 l
Cooling System 120 l
Coolant (Validated by Test Cell Fill Quantities) 125 l
Crankcase 60 l
Diesel Exhaust Fluid Tank 33 l
Transmission 120 l
Transmission - Validated by Test Cell Fill Quantities 110 l
Differential - Final Drives - Front 186 l
Differential - Final Drives - Rear 186 l
Hydraulic System Factory Fill 475 l
Hydraulic System - Tank Only 240 l
Sound Performance - Tier 4 Final / Stage V - Standard
Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A)
Machine Sound Power Level (ISO 6395:2008) 111 dB(A)
Sound Performance - Tier 3 / Stage III - Standard
Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A)
Machine Sound Power Level (ISO 6395:2008) 112 dB(A)
Dimensions (Approximate) - Standard Lift Linkage
Ground to Top of ROPS 4202 mm
Ground to Top of Exhaust Stacks 4521 mm
Ground to Top of Hood 3334 mm
Rear Axle - Centerline to Bumper 3187 mm
Front Axle Centerline to Bucket Tip 4254 mm
Wheel Base 4550 mm
Maximum Overall Length 11991 mm
Ground to Lower Hitch Clearance 568 mm
Clearance at Maximum Lift 3641 mm
B-Pin Height - Maximum Lift 5491 mm
Maximum Overall Height - Bucket Raised 7455 mm
Reach - Maximum Lift 1981 mm
Dimensions (Approximate) - High Lift Linkage
Ground to Top of ROPS 4202 mm
Ground to Top of Exhaust Stacks 4521 mm
Ground to Top of Hood 3334 mm
Rear Axle - Centerline to Bumper 3187 mm
Front Axle Centerline to Bucket Tip 4661 mm
Wheel Base 4550 mm
Maximum Overall Length 12398 mm
Ground to Lower Hitch Clearance 568 mm
Clearance at Maximum Lift 4043 mm
B-Pin Height - Maximum Lift 5887 mm
Maximum Overall Height - Bucket Raised 7849 mm
Reach - Maximum Lift 2062 mm
Buckets
Bucket Capacities 4.7-13 m3 (6.2-17 yd3)

Advantages and Features

PROVEN RELIABILITY

        
  • Cat C18 engine is built and tested to meet your most demanding applications.
    •     
  • Cat torque converter with lock-up clutch helps reduce torque converter losses and lowers system heat.
    •     
  • Maximum responsiveness with Steering and Transmission Integrated Control (STIC™).
    •     
  • Moves more material efficiently with improved power and control.
    •     
  • Durable construction withstands the toughest loading conditions and multiple lifecycles.

LONG TERM VALUE AND DURABILITY

        
  • World-class transmission for long life and consistent, smooth shifting; specifically designed for mining applications.
    •     
  • Advanced productivity electronic control strategy (APECS) transmission controls for optimal momentum on grades.
    •     
  • Positive flow control (PFC) hydraulic system helps increase 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) helps minimize tire spin by allowing torque to adjust to underfoot conditions.

PERFORMANCE AND PRODUCTIVITY

        
  • Superior digging, higher bucket fill factors, reduced dig times.
    •     
  • Improved visibility over the top of the linkage.
    •     
  • Operators can now monitor tire pressure during operation. Any change sending a fault code to VisionLink®, helps prevent premature tire failure.
    •     
  • Convenient, responsive, electro-hydraulic controls help increase operator productivity.

PERFORMANCE WITH LESS FUEL

        
  • Economy mode helps optimize engine speed control for reduced fuel consumption no matter if operating in manual throttle or throttle lock.
    •     
  • Flow sharing hydraulics provide full flow at reduced engine rpm.
    •     
  • Fully integrated electronic engine controls help make your fuel go farther.
    •     
  • Engine idle shutdown for less fuel used while idling.
    •     
  • Increased hydraulic speed and fast cycle times helps decrease idle and fuel burn, with optimal efficiency.

PRODUCTIVITY WITH TECHNOLOGY

        
  • 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 plan provides comprehensive actionable information to help you manage and improve the productivity and profitability of your operations.
    •     
  • 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.
    •     
  • Easy to operate in single pedal with dynamic braking and operator
        assist features that allow faster training of new operators.
    •     
  • Increase operator efficiency with Operator Coaching through onboard
        tips for truck loading operations.
*Not legal for trade.

SAFETY FIRST

        
  • 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.
    •     
  • 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

        
  • Grouped service points provide easy access to critical daily service checks.
    •     
  • Swing-out engine compartment service doors.
    •     
  • Reduced waste with maintenance-free batteries.
    •     
  • Ecology drains to prevent spills and allow for easier service.
    •     
  • Vehicle Information Management System (VIMS™) notifications to help resolve problems before failure.
    •     
  • Ground level access to transmission control valves.
    •     
  • Long life, rebuildability, and high resale value.

OPERATOR COMFORT AND CONTROL

        
  • World-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 help reduce fatigue.
    •     
  • Ergonomic switch placement and displays with 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

        
  • 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.
    •     
  • Purpose-built 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

        
  • Unload a typical full-length log truck in a single pass with the larger lift and tilt cylinders and a unique tilt lever to maximize linkage force. Designed with more lift capacity and 26% more tilt capacity over the standard 988. 
    •     
  • Swing out fan radiator design for easy service in high-debris millyard applications helping to reduce maintenance and service down time. Auto reversing fan system to help dislodge debris and keep air flowing across the radiator cores. 
    •     
  • Additional counterweight to help increase stability for improved confidence while maneuvering with full loads. 
    •     
  • Purpose-built lift arm with lowered cross member to help increase visibility to the tips of the forks helping to increase the speed when lining up the load and reduce operator movements to see the forks. 

PURPOSE-BUILT SPECIALTY MODELS - STEEL MILL

        
  • 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 help keep 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 help maximize material retention and minimize dig time.

Standard Equipment

  • 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
    • Jump 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
  • ADDITIONAL EQUIPMENT
    • Additional 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
  • OTHER OPTIONAL CONFIGURATIONS
    • Aggregate Handler