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988 Wheel Loader
70836 988 Wheel Loader

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.

CAT
Large Wheel Loaders
Price: Request a Quote

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
538 hp
Engine Power - ISO 14396:2002
580 hp
Gross Power - SAE J1995:2014
588 hp
Engine Model
Cat® C18 ™

Engine

Net Power - SAE J1349:2011
538 hp
Engine Power - ISO 14396:2002
580 hp
Gross Power - SAE J1995:2014
588 hp
Engine Model
Cat® C18 ™
Rated Speed
1,700/min
Peak Power Speed
1,500/rpm
Emissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2,014 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
5.7 in
Stroke
7.2 in
Displacement
1,105 in³
Peak Torque - 1,200 rpm
2,230 lb/ft
Torque Rise
58 %

Operating Specifications

Operating Weight
112,574 lb
Rated Payload - Quarry Face
12.5 t
Rated Payload - Loose Material
16 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
4 mile/h
Forward - 2
7.2 mile/h
Forward - 3
12.7 mile/h
Forward - 4
21.6 mile/h
Reverse - 1
4.7 mile/h
Reverse - 2
8.3 mile/h
Reverse - 3
14.4 mile/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
7.8 mile/h
Direct Drive - Forward 3
13.9 mile/h
Direct Drive - Forward 4
24.4 mile/h
Direct Drive - Reverse 1
5 mile/h
Direct Drive - Reverse 2
8.9 mile/h
Direct Drive - Reverse 3
15.8 mile/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
153 gal/min
Relief Valve Setting - Lift/Tilt
4,757 psi
Cylinders, Double Acting - Lift, Bore and Stroke
210 mm × 1,050 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
551 psi

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
71.3 gal/min
Relief Valve Setting - Steering
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
188 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 / 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
13.8 ft
Ground to Top of Exhaust Stacks
14.8 ft
Ground to Top of Hood
10.9 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
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

Dimensions (Approximate) - High Lift Linkage

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
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
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

Buckets

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

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

Specifications

Engine

Net Power - SAE J1349:2011
538 hp
Engine Power - ISO 14396:2002
580 hp
Gross Power - SAE J1995:2014
588 hp
Engine Model
Cat® C18 ™
Rated Speed
1,700/min
Peak Power Speed
1,500/rpm
Emissions
U.S. EPA Tier 4 Final, EU Stage V, and Japan 2,014 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
5.7 in
Stroke
7.2 in
Displacement
1,105 in³
Peak Torque - 1,200 rpm
2,230 lb/ft
Torque Rise
58 %

Operating Specifications

Operating Weight
112,574 lb
Rated Payload - Quarry Face
12.5 t
Rated Payload - Loose Material
16 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
4 mile/h
Forward - 2
7.2 mile/h
Forward - 3
12.7 mile/h
Forward - 4
21.6 mile/h
Reverse - 1
4.7 mile/h
Reverse - 2
8.3 mile/h
Reverse - 3
14.4 mile/h
Direct Drive - Forward 1
Lock-up disabled
Direct Drive - Forward 2
7.8 mile/h
Direct Drive - Forward 3
13.9 mile/h
Direct Drive - Forward 4
24.4 mile/h
Direct Drive - Reverse 1
5 mile/h
Direct Drive - Reverse 2
8.9 mile/h
Direct Drive - Reverse 3
15.8 mile/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
153 gal/min
Relief Valve Setting - Lift/Tilt
4,757 psi
Cylinders, Double Acting - Lift, Bore and Stroke
210 mm × 1,050 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
551 psi

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
71.3 gal/min
Relief Valve Setting - Steering
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
188 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 / 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
13.8 ft
Ground to Top of Exhaust Stacks
14.8 ft
Ground to Top of Hood
10.9 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
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

Dimensions (Approximate) - High Lift Linkage

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
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
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

Buckets

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

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 (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

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