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988

Large Wheel Loaders

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.

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Net Power 403 kW
Engine Model Cat® C18 ™
Bore 145 mm
Stroke 183 mm
Availability Contact Dealer
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988
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OVERVIEW

An industry leader—made better

FEATURES & BENEFITS

PROVEN RELIABILITY

    Cat C18 engine is built and tested to meet your most demanding applications.     Cat torque converter with lock-up clutch eli... Read more

LONG TERM VALUE AND DURABILITY

    Best-in-class transmission for long life and consistent, smooth shifting; specifically designed for mining applications.     ... Read more

PERFORMANCE AND PRODUCTIVITY

    Improved cycle times and bucket fill factors with optional operator coaching.     Optimized dig segment cycle with optional o... Read more

PERFORMANCE WITH LESS FUEL

    Economy mode optimizes engine speed control for reduced fuel consumption no matter if operating in manual throttle or throttle lock.   ... Read more

PRODUCTIVITY WITH TECHNOLOGY

    Cat technologies developed to monitor, manage, and enhance your jobsite operations.     Cat Payload provides accurate weighin... Read more

SAFETY FIRST

    Achieve precise positioning for easy loading in tight areas with 43 degrees of steering articulation.     Precise machine con... Read more

SAVE ON SERVICE AND MAINTENANCE

    10% lower maintenance costs.     Grouped service points provide easy access to critical daily service checks.   &nb... Read more

OPERATOR COMFORT AND CONTROL

    Best-in-class operator comfort and ergonomics.     Cat Premium Plus seat with standard features including leather finish, for... Read more

PURPOSE-BUILT SPECIALTY MODELS - BLOCK HANDLER

    Delivers stability and durability with an optimized counterweight for block handling applications.     A high rimpull powertr... Read more

SPECIFICATIONS FOR 988

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Engine
Net Power 403 kW
Engine Model Cat® C18 ™
Bore 145 mm
Stroke 183 mm
Displacement 18.1 l
Torque Rise 58 %
Rated Speed 1700/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396 432 kW
Peak Power Speed 1500/rpm
Peak Power Speed - 1,500 rpm - Gross - SAE J1995 439 kW
Net Power - SAE J1349 401 kW
Peak Torque - 1,200 rpm 3023 N·m
Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349 403 kW
Gross - ISO 14396 432 kW
Engine Power - ISO 14396 432 kW
Gross Power - SAE J1995 439 kW
Operating Specifications
Operating Weight 51062 kg
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3)
Rated Payload - Loose Material 14.5 t
Rated Payload - Quarry Face 11.3 t
Cat Truck Match - High Lift 773～775
Cat Truck Match - Standard 770～772
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 2 12.5 km/h
Direct Drive - Reverse 2 14.3 km/h
Direct Drive - Forward 4 39.3 km/h
Direct Drive - Reverse 3 25.5 km/h
Direct Drive - Reverse 1 8 km/h
Direct Drive - Forward 3 22.3 km/h
Direct Drive - Forward 1 Lock-up disabled
Hydraulic System - Lift/Tilt
Relief Valve Setting - Main 3800 kPa
Cylinders, Double Acting - Tilt, Bore and Stroke 269 mm × 685 mm (8.7 in × 27 in)
Pilot System Variable displacement piston
Maximum Flow at 1,400-1,860 rpm 580 l/min
Relief Valve Setting - Lift/Tilt 32800 kPa
Maximum Flow 52 l/min
Cylinders, Double Acting - Lift, Bore and Stroke 210 mm × 1050 mm (8.7 in × 41.3 in)
Lift/Tilt System Variable displacement piston
Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing
Service Refill Capacities
Fuel Tank 712 l
Cooling System 120 l
Crankcase 60 l
Transmission 120 l
Hydraulic System - Tank Only 240 l
Differential - Final Drives - Rear 186 l
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only) 33 l
Differential - Final Drives - Front 186 l
Hydraulic System Factory Fill 475 l
Coolant (Validated by Test Cell Fill Quantities) 125 l
Transmission - Validated by Test Cell Fill Quantities 110 l
Diesel Exhaust Fluid Tank 33 l
Buckets
Bucket Capacities 4.7-13 m3 (6.2-17 yd3)
Axles
Front Fixed
Rear Trunnion
Oscillation Angle 13 °
Brakes
Brakes ISO 3450:2011
Hydraulic System - Steering
Maximum Flow 270 l/min
Total Steering Angle 86 °
Relief Valve Setting - Steering 30000 kPa
Steering System - Circuit Pilot, load sensing
Steering System - Pump Piston, variable displacement
Steering Cycle Times - Low Idle 5.6 s
Steering Cycle Times - High Idle 3.4 s
Hydraulic Cycle Time (1,400-1,860 rpm)
Dump 2.2 s
Total Hydraulic Cycle Time - Empty Bucket 18.2 s
Rack Back 4.5 s
Lower Float Down 3.5 s
Raise 8 s
Sound Performance - Tier 4 Final/Stage IV - Standard
Machine Sound Level (ISO 6395) 111 dB(A)
Operator Sound Level (ISO 6396) 72 dB(A)
Sound Performance - Tier 4 Final/Stage IV: Suppression
Operator Sound Level (ISO 6396) 72 dB(A)
Machine Sound Level (ISO 6395) 109 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Standard
Machine Sound Level (ISO 6395) 112 dB(A)
Operator Sound Level (ISO 6396) 73 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Suppression
Machine Sound Level (ISO 6395) 110 dB(A)
Operator Sound Level (ISO 6396) 72 dB(A)
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.
Operator's Cab
ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards
Sound Performance - Tier 4 Final/EU Stage V - Standard
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
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

SELECT MODELS TO COMPARE

Large Wheel Loaders

995

Engine Model Cat® 3516E
Emissions U.S. EPA Tier 4 Final/EU Stage V or U.S. EPA Tier 1 equivalent
Engine Power - ISO 14396 1377 kW
Gross Power - SAE J1995 1394 kW
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992

Net Power 607 kW
Engine Model Cat® C32B
Emissions U.S. EPA Tier 4 Final, U.S. EPA Tier 2 Equivalent
Rated Speed 1750 rpm
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Large Wheel Loaders

990

Rated Payload - Loose Material (Standard) 22 t
Rated Payload - Loose Material (High Lift) 20 t
Rated Payload - Standard (Quarry Face) 15.9 t
Rated Payload - High Lift (Quarry Face) 15.9 t
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994K

Net Power 1297 kW
Operating Weight 240018 kg
Bucket Capacities 19.1-24.5 m³ (25-32 yd³)
Engine Model Cat® 3516E
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