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 lower cost per ton.
Introduced in 1963, the 988 has been the industry leader for over 60 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988 XE brings improved sustainability and maximum efficiency to this machine platform.
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Engine
- Net Power - SAE J1349
- 538 hp
- Engine Model
- Cat® C18 ™
- Engine Power - ISO 14396:2002
- 580 hp
- Gross Power - SAE J1995:2014
- 588 hp
- Rated Speed
- 1,700 rpm
- Peak Power Speed
- 1,500 rpm
- Emissions
- U.S. EPA Tier 4 Final, EU Stage V, and Japan 2,014
- Bore
- 5.7 in
- Stroke
- 7.2 in
- Displacement
- 1,105 in³
- Peak Torque - 1,200 rpm - SAE J1995
- 2,230 ft·lbf
- Torque Rise
- 58%
Operating Specifications
- Operating Weight
- 116,362 lb
- Operating Weight - Standard
- 116,362 lb
- Operating Weight - High Lift
- 119,618 lb
- Rated Payload - Standard (Quarry Face)
- 12.5 ton (US)
- Rated Payload - Loose Material (Standard)
- 16 ton (US)
- Bucket Capacity Range
- 4.7-13 m3 (6.2-17 yd3)
Transmission
- Transmission Type
- Cat switched reluctance electric drive
- Forward 1 (virtual)
- 4.3 mile/h
- Forward 2 (virtual)
- 7 mile/h
- Forward 3 (virtual)
- 13.8 mile/h
- Forward 4 (virtual)
- 20 mile/h
- Reverse 1 (virtual)
- 4.3 mile/h
- Reverse 2 (virtual)
- 7 mile/h
- Reverse 3 (virtual)
- 17.5 mile/h
Hydraulic System - Lift/Tilt
- Lift/Tilt System - Circuit
- EH-Positive Flow Control, Flow Sharing
- Lift/Tilt System - Pump
- Variable displacement piston
- Maximum Flow at 1,400-1,600 rpm
- 153 gal/min
- Relief Valve Setting - Lift/Tilt
- 4,757 psi
- Lift Cylinder - Bore
- 8.7 in
- Lift Cylinder - Stroke
- 41.3 in
- Tilt Cylinder - Bore
- 8.7 in
- Tilt Cylinder - Stroke
- 27 in
Hydraulic Cycle Times
- Rack Back
- 4.5 s
- Raise
- 8 s
- Dump
- 2.2 s
- Lower Float Down
- 3.5 s
- Total Hydraulic Cycle Time
- 18.2 s
Hydraulic System - Steering
- Steering System - Circuit
- Pilot, load sensing
- Steering System - Pump
- Piston, variable displacement
- Maximum Flow at 1,400-1,600 rpm
- 71.3 gal/min
- Steering Cut Off Pressure
- 4,351 psi
- 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 = 1,430). 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 3,450:2,011
Operator's Cab
- ROPS/FOPS
- ROPS/FOPS meet ISO 3,471:2,008 and ISO 3,449:2,005 Level II standards
Service Refill Capacities
- Fuel Tank
- 147 gal (US)
- Cooling System - Jacket Water
- 30 gal (US)
- Cooling Systems - Power Train
- 8 gal (US)
- Engine Crankcase
- 16 gal (US)
- Diesel Exhaust Fluid Tank
- 8.7 gal (US)
- Transmission
- 16 gal (US)
- Differential - Final Drives - Front
- 49 gal (US)
- Differential - Final Drives - Rear
- 49 gal (US)
- Hydraulic System - Implement/Steering
- 126 gal (US)
- Note
- All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternati
Sound Performance - Tier 4 Final / Stage V - Standard
- Operator Sound Pressure Level (ISO 6396:2008)
- 72 dB(A)
- Machine Sound Power Level (ISO 6395:2008)
- 109 dB(A)
Sound Performance - Tier 3 / Stage III - Standard
- Operator Sound Pressure Level (ISO 6396:2008)
- 72 dB(A)
- Machine Sound Power Level (ISO 6395:2008)
- 110 dB(A)
Dimensions (Approximate) - Standard Lift
- Ground to Top of ROPS
- 13.8 ft
- Ground to Top of Exhaust Stacks
- 14.8 ft
- Ground to Top of Hood
- 10.9 ft
- Ground to Bumper Clearance
- 3.1 ft
- Rear Axle - Centerline to Bumper
- 10.5 ft
- Front Axle Centerline to Bucket Tip
- 14 ft
- Wheel Base
- 14.9 ft
- Maximum Overall Length
- 39.3 ft
- Ground to Lower Hitch Clearance
- 1.9 ft
- Ground to Center of Axles
- 3.2 ft
- Clearance at Maximum Lift
- 11.9 ft
- B-Pin Height - Maximum Lift
- 18 ft
- Maximum Overall Height - Bucket Raised
- 24.5 ft
- Reach - Maximum Lift
- 6.5 ft
- Note
- Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Dimensions (Approximate) - High Lift
- Ground to Top of ROPS
- 13.8 ft
- Ground to Top of Exhaust Stacks
- 14.8 ft
- Ground to Top of Hood
- 10.9 ft
- Ground to Bumper Clearance
- 3.1 ft
- Rear Axle - Centerline to Bumper
- 10.5 ft
- Front Axle Centerline to Bucket Tip
- 15.3 ft
- Wheel Base
- 14.9 ft
- Maximum Overall Length
- 40.7 ft
- Ground to Lower Hitch Clearance
- 1.9 ft
- Ground to Center of Axles
- 3.2 ft
- Clearance at Maximum Lift
- 13.3 ft
- B-Pin Height - Maximum Lift
- 19.3 ft
- Maximum Overall Height - Bucket Raised
- 25.8 ft
- Reach - Maximum Lift
- 6.8 ft
- Note
- Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Dimensions - Millyard Linkage
- Ground to Top of ROPS
- 13.8 ft
- Ground to Top of Exhaust Stacks
- 13.8 ft
- Ground to Top of Hood
- 10.9 ft
- Ground to Bumper Clearance
- 3.1 ft
- Rear Axle - Centerline to Bumper
- 10.5 ft
- Front Axle Centerline to Fork Tip
- 16.5 ft
- Wheel Base
- 14.9 ft
- Maximum Overall Length
- 41.9 ft
- Ground to Lower Hitch Clearance
- 1.9 ft
- Ground to Center of Front Axle
- 3.2 ft
- Fork Height with Level Arms
- 8.1 ft
- Fork Top Clamp Opening
- 13.1 ft
- Fork Height at Maximum Lift
- 17.2 ft
- Hinge Pin Height at Maximum Lift
- 16.1 ft
- Dump Angle at Maximum Lift
- -39.4 °
Buckets
- Bucket Capacities
- 4.7-13 m3 (6.2-17 yd3)
Sustainability
- Recyclability
- 96%
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 (LED, work lights, access and service platform lighting)
- Starting and charging system, 24V
- Jump start receptacle
- Starter lockout in bumper
- Transmission lockout in bumper
- Hazardous voltage lamp
-
- 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
- CB radio-ready
- 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
- Virtual 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
- 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
- Manual switch and automatic fuel priming
- Cat Production Measurement ready
- Cat switched reluctance (SR) generator/pump drive
- Cat switched reluctance (SR) drive motor
- Cat Integrated Powered Electronics
- Automatic retarding controls
-
- Additional Equipment
-
- 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, 555 L (147 gal)
- Hitch, drawbar with pin
- Hoses, Cat XT™
- Hydraulic, steering and brake filtration/screening system
- Cat Clean Emission Module
- Oil sampling valves
- Premixed 50 percent 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
- Engine block heater 120V or 240V
- High ambient cooling – software
- Cat Production Measurement
- Crankcase guard
- Engine brake, software enabled attachment (SEA)
-
- Other Optional Configurations
-
- Load and Carry
- Millyard
- Aggregate Handler
-
- Operator Environment
-
- Cab precleaner
- Cat Detect, object detection system
- Cat Production Measurement
- Radio, AM/FM/CD/MP3 Bluetooth® with Satellite SiriusXM
- LED warning strobe
- Window pull down visor
- Handrail mounted mirrors
-
- Additional Equipment
-
- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Package: Additional Starter and 2 Batteries, Engine Block Heater 120V or 240V, Heated Fuel Lines
- Engine Compartment Lights
- Autolube with Auto shutoff
- High Performance LED Lighting
- Wheel Chocks
- Operator Coaching
- Tire Pressure Monitoring System
- Autodig, Tire Slip Prevention, Auto Set Tires, and Lift Stall Prevention
- Additional Counterweight
Specifications
Engine
- Net Power - SAE J1349
- 538 hp
- Engine Model
- Cat® C18 ™
- Engine Power - ISO 14396:2002
- 580 hp
- Gross Power - SAE J1995:2014
- 588 hp
- Rated Speed
- 1,700 rpm
- Peak Power Speed
- 1,500 rpm
- Emissions
- U.S. EPA Tier 4 Final, EU Stage V, and Japan 2,014
- Bore
- 5.7 in
- Stroke
- 7.2 in
- Displacement
- 1,105 in³
- Peak Torque - 1,200 rpm - SAE J1995
- 2,230 ft·lbf
- Torque Rise
- 58%
Operating Specifications
- Operating Weight
- 116,362 lb
- Operating Weight - Standard
- 116,362 lb
- Operating Weight - High Lift
- 119,618 lb
- Rated Payload - Standard (Quarry Face)
- 12.5 ton (US)
- Rated Payload - Loose Material (Standard)
- 16 ton (US)
- Bucket Capacity Range
- 4.7-13 m3 (6.2-17 yd3)
Transmission
- Transmission Type
- Cat switched reluctance electric drive
- Forward 1 (virtual)
- 4.3 mile/h
- Forward 2 (virtual)
- 7 mile/h
- Forward 3 (virtual)
- 13.8 mile/h
- Forward 4 (virtual)
- 20 mile/h
- Reverse 1 (virtual)
- 4.3 mile/h
- Reverse 2 (virtual)
- 7 mile/h
- Reverse 3 (virtual)
- 17.5 mile/h
Hydraulic System - Lift/Tilt
- Lift/Tilt System - Circuit
- EH-Positive Flow Control, Flow Sharing
- Lift/Tilt System - Pump
- Variable displacement piston
- Maximum Flow at 1,400-1,600 rpm
- 153 gal/min
- Relief Valve Setting - Lift/Tilt
- 4,757 psi
- Lift Cylinder - Bore
- 8.7 in
- Lift Cylinder - Stroke
- 41.3 in
- Tilt Cylinder - Bore
- 8.7 in
- Tilt Cylinder - Stroke
- 27 in
Hydraulic Cycle Times
- Rack Back
- 4.5 s
- Raise
- 8 s
- Dump
- 2.2 s
- Lower Float Down
- 3.5 s
- Total Hydraulic Cycle Time
- 18.2 s
Hydraulic System - Steering
- Steering System - Circuit
- Pilot, load sensing
- Steering System - Pump
- Piston, variable displacement
- Maximum Flow at 1,400-1,600 rpm
- 71.3 gal/min
- Steering Cut Off Pressure
- 4,351 psi
- 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 = 1,430). 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 3,450:2,011
Operator's Cab
- ROPS/FOPS
- ROPS/FOPS meet ISO 3,471:2,008 and ISO 3,449:2,005 Level II standards
Service Refill Capacities
- Fuel Tank
- 147 gal (US)
- Cooling System - Jacket Water
- 30 gal (US)
- Cooling Systems - Power Train
- 8 gal (US)
- Engine Crankcase
- 16 gal (US)
- Diesel Exhaust Fluid Tank
- 8.7 gal (US)
- Transmission
- 16 gal (US)
- Differential - Final Drives - Front
- 49 gal (US)
- Differential - Final Drives - Rear
- 49 gal (US)
- Hydraulic System - Implement/Steering
- 126 gal (US)
- Note
- All nonroad Tier 4 Final/Stage V diesel engines are required to use: – The machine has the flexibility to run on either ultra-low-sulfur diesel fuel (ULSD with 15 ppm of sulfur or less). – Cat engines are compatible with the following renewable, alternati
Sound Performance - Tier 4 Final / Stage V - Standard
- Operator Sound Pressure Level (ISO 6396:2008)
- 72 dB(A)
- Machine Sound Power Level (ISO 6395:2008)
- 109 dB(A)
Sound Performance - Tier 3 / Stage III - Standard
- Operator Sound Pressure Level (ISO 6396:2008)
- 72 dB(A)
- Machine Sound Power Level (ISO 6395:2008)
- 110 dB(A)
Dimensions (Approximate) - Standard Lift
- Ground to Top of ROPS
- 13.8 ft
- Ground to Top of Exhaust Stacks
- 14.8 ft
- Ground to Top of Hood
- 10.9 ft
- Ground to Bumper Clearance
- 3.1 ft
- Rear Axle - Centerline to Bumper
- 10.5 ft
- Front Axle Centerline to Bucket Tip
- 14 ft
- Wheel Base
- 14.9 ft
- Maximum Overall Length
- 39.3 ft
- Ground to Lower Hitch Clearance
- 1.9 ft
- Ground to Center of Axles
- 3.2 ft
- Clearance at Maximum Lift
- 11.9 ft
- B-Pin Height - Maximum Lift
- 18 ft
- Maximum Overall Height - Bucket Raised
- 24.5 ft
- Reach - Maximum Lift
- 6.5 ft
- Note
- Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Dimensions (Approximate) - High Lift
- Ground to Top of ROPS
- 13.8 ft
- Ground to Top of Exhaust Stacks
- 14.8 ft
- Ground to Top of Hood
- 10.9 ft
- Ground to Bumper Clearance
- 3.1 ft
- Rear Axle - Centerline to Bumper
- 10.5 ft
- Front Axle Centerline to Bucket Tip
- 15.3 ft
- Wheel Base
- 14.9 ft
- Maximum Overall Length
- 40.7 ft
- Ground to Lower Hitch Clearance
- 1.9 ft
- Ground to Center of Axles
- 3.2 ft
- Clearance at Maximum Lift
- 13.3 ft
- B-Pin Height - Maximum Lift
- 19.3 ft
- Maximum Overall Height - Bucket Raised
- 25.8 ft
- Reach - Maximum Lift
- 6.8 ft
- Note
- Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height.
Dimensions - Millyard Linkage
- Ground to Top of ROPS
- 13.8 ft
- Ground to Top of Exhaust Stacks
- 13.8 ft
- Ground to Top of Hood
- 10.9 ft
- Ground to Bumper Clearance
- 3.1 ft
- Rear Axle - Centerline to Bumper
- 10.5 ft
- Front Axle Centerline to Fork Tip
- 16.5 ft
- Wheel Base
- 14.9 ft
- Maximum Overall Length
- 41.9 ft
- Ground to Lower Hitch Clearance
- 1.9 ft
- Ground to Center of Front Axle
- 3.2 ft
- Fork Height with Level Arms
- 8.1 ft
- Fork Top Clamp Opening
- 13.1 ft
- Fork Height at Maximum Lift
- 17.2 ft
- Hinge Pin Height at Maximum Lift
- 16.1 ft
- Dump Angle at Maximum Lift
- -39.4 °
Buckets
- Bucket Capacities
- 4.7-13 m3 (6.2-17 yd3)
Sustainability
- Recyclability
- 96%
Standard/Optional Features
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 (LED, work lights, access and service platform lighting)
- Starting and charging system, 24V
- Jump start receptacle
- Starter lockout in bumper
- Transmission lockout in bumper
- Hazardous voltage lamp
-
- 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
- CB radio-ready
- 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
- Virtual 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
- 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
- Manual switch and automatic fuel priming
- Cat Production Measurement ready
- Cat switched reluctance (SR) generator/pump drive
- Cat switched reluctance (SR) drive motor
- Cat Integrated Powered Electronics
- Automatic retarding controls
-
- Additional Equipment
-
- 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, 555 L (147 gal)
- Hitch, drawbar with pin
- Hoses, Cat XT™
- Hydraulic, steering and brake filtration/screening system
- Cat Clean Emission Module
- Oil sampling valves
- Premixed 50 percent 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
- Engine block heater 120V or 240V
- High ambient cooling – software
- Cat Production Measurement
- Crankcase guard
- Engine brake, software enabled attachment (SEA)
-
- Other Optional Configurations
-
- Load and Carry
- Millyard
- Aggregate Handler
-
- Operator Environment
-
- Cab precleaner
- Cat Detect, object detection system
- Cat Production Measurement
- Radio, AM/FM/CD/MP3 Bluetooth® with Satellite SiriusXM
- LED warning strobe
- Window pull down visor
- Handrail mounted mirrors
-
- Additional Equipment
-
- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Package: Additional Starter and 2 Batteries, Engine Block Heater 120V or 240V, Heated Fuel Lines
- Engine Compartment Lights
- Autolube with Auto shutoff
- High Performance LED Lighting
- Wheel Chocks
- Operator Coaching
- Tire Pressure Monitoring System
- Autodig, Tire Slip Prevention, Auto Set Tires, and Lift Stall Prevention
- Additional Counterweight