988 Wheel Loader

988 Wheel Loader

360° Exterior View

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 ...
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Engine

Net Power - SAE J1349
541HP
Engine Power - ISO 14396
580HP
Gross Power - SAE J1995
588HP
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
Bore
5.7in
Stroke
7.2in
Displacement
1105in³
Peak Torque - 1,200 rpm
2230lb/ft
Torque Rise
58%

Operating Specifications

Operating Weight
112574lb
Rated Payload - Quarry Face
12.5t
Rated Payload - Loose Material
16t
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
4mile/h
Forward - 2
7.2mile/h
Forward - 3
12.7mile/h
Forward - 4
21.6mile/h
Reverse - 1
4.7mile/h
Reverse - 2
8.3mile/h
Reverse - 3
14.4mile/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
7.8mile/h
Direct Drive - Forward 3
13.9mile/h
Direct Drive - Forward 4
24.4mile/h
Direct Drive - Reverse 1
5mile/h
Direct Drive - Reverse 2
8.9mile/h
Direct Drive - Reverse 3
15.8mile/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
153gal/min
Relief Valve Setting - Lift/Tilt
4757psi
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
551psi

Hydraulic Cycle Time (1,400-1,860 rpm)

Rack Back
4.5s
Raise
8s
Dump
2.2s
Lower Float Down
3.5s
Total Hydraulic Cycle Time - Empty Bucket
18.2s

Hydraulic System - Steering

Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Maximum Flow
71.3gal/min
Relief Valve Setting - Steering
4351psi
Total Steering Angle
86 °
Steering Cycle Times - High Idle
3.4s
Steering Cycle Times - Low Idle
5.6s

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
188gal (US)
Cooling System
31.7gal (US)
Coolant (Validated by Test Cell Fill Quantities)
33gal (US)
Crankcase
15.9gal (US)
Diesel Exhaust Fluid Tank
8.7gal (US)
Transmission
31.7gal (US)
Transmission - Validated by Test Cell Fill Quantities
29gal (US)
Differential - Final Drives - Front
49.1gal (US)
Differential - Final Drives - Rear
49.1gal (US)
Hydraulic System Factory Fill
125.5gal (US)
Hydraulic System - Tank Only
63.4gal (US)

Sound Performance - Tier 4 Final/EU Stage V - Standard

Operator Sound Level (ISO 6396)
72dB(A)
Machine Sound Level (ISO 6395)
111dB(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

Ground to Top of ROPS
13.8ft
Ground to Top of Exhaust Stacks
14.8ft
Ground to Top of Hood
10.9ft
Rear Axle - Centerline to Bumper
10.5ft
Front Axle Centerline to Bucket Tip
14ft
Wheel Base
14.9ft
Maximum Overall Length
39.3ft
Ground to Lower Hitch Clearance
1.9ft
Clearance at Maximum Lift
11.9ft
B-Pin Height - Maximum Lift
18ft
Maximum Overall Height - Bucket Raised
24.5ft
Reach - Maximum Lift
6.5ft

Dimensions (Approximate) - High Lift Linkage

Ground to Top of ROPS
13.8ft
Ground to Top of Exhaust Stacks
14.8ft
Ground to Top of Hood
10.9ft
Rear Axle - Centerline to Bumper
10.5ft
Front Axle Centerline to Bucket Tip
15.3ft
Wheel Base
14.9ft
Maximum Overall Length
40.7ft
Ground to Lower Hitch Clearance
1.9ft
Clearance at Maximum Lift
13.3ft
B-Pin Height - Maximum Lift
19.3ft
Maximum Overall Height - Bucket Raised
25.8ft
Reach - Maximum Lift
6.8ft

Buckets

Bucket Capacities
4.7-13 m3 (6.2-17 yd3)

PROVEN RELIABILITY

        

  • 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

        

  • 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

        

  • 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

        

  • 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

        

  • 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.

*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.
  •     

  • 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

        

  • 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

        

  • 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

        

  • 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

        

  • 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

        

  • 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.

Standard Equipment:

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