988 Wheel Loader
US
Metric
Overview
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.
Engine
Net Power
541.00 HP
403.00 kW
Engine Model
Cat® C18 ™
Bore
5.70 in
145.00 mm
Stroke
7.20 in
183.00 mm
Displacement
1105.00 in³
18.10 l
Torque Rise
58.00 %
58.00 %
Rated Speed
1700/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396
580.00 HP
432.00 kW
Peak Power Speed
1500/rpm
Peak Power Speed - 1,500 rpm - Gross - SAE J1995
588.00 HP
439.00 kW
Net Power - SAE J1349
541.00 HP
401.00 kW
Peak Torque - 1,200 rpm
2230.00 lb/ft
3023.00 N·m
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
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349
541.00 HP
403.00 kW
Gross - ISO 14396
580.00 HP
432.00 kW
Operating Specifications
Operating Weight
112574.00 lb
51062.00 kg
Bucket Capacity Range
4.7-13 m3 (6.2-17 yd3)
Rated Payload - Loose Material
16.00 t
14.50 t
Rated Payload - Quarry Face
12.50 t
11.30 t
Cat Truck Match - High Lift
773～775
Cat Truck Match - Standard
770～772
Transmission
Transmission Type
Cat planetary powershift
Forward - 1
4.00 mile/h
6.50 km/h
Forward - 2
7.20 mile/h
11.60 km/h
Forward - 3
12.70 mile/h
20.40 km/h
Forward - 4
21.60 mile/h
34.70 km/h
Reverse - 1
4.70 mile/h
7.50 km/h
Reverse - 2
8.30 mile/h
13.30 km/h
Reverse - 3
14.40 mile/h
23.20 km/h
Direct Drive - Forward 2
7.80 mile/h
12.50 km/h
Direct Drive - Reverse 2
8.90 mile/h
14.30 km/h
Direct Drive - Forward 4
24.40 mile/h
39.30 km/h
Direct Drive - Reverse 3
15.80 mile/h
25.50 km/h
Direct Drive - Reverse 1
5.00 mile/h
8.00 km/h
Direct Drive - Forward 3
13.90 mile/h
22.30 km/h
Direct Drive - Forward 1
Lock-up disabled
Hydraulic System - Lift/Tilt
Relief Valve Setting - Main
551.00 psi
3800.00 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
153.00 gal/min
580.00 l/min
Relief Valve Setting - Lift/Tilt
4757.00 psi
32800.00 kPa
Maximum Flow
13.70 gal/min
52.00 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
188.00 gal (US)
712.00 l
Cooling System
31.70 gal (US)
120.00 l
Crankcase
15.90 gal (US)
60.00 l
Transmission
31.70 gal (US)
120.00 l
Hydraulic System - Tank Only
63.40 gal (US)
240.00 l
Differential - Final Drives - Rear
49.10 gal (US)
186.00 l
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)
8.70 gal (US)
33.00 l
Differential - Final Drives - Front
49.10 gal (US)
186.00 l
Hydraulic System Factory Fill
125.50 gal (US)
475.00 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
71.30 gal/min
270.00 l/min
Total Steering Angle
86 °
Relief Valve Setting - Steering
4351.00 psi
30000.00 kPa
Steering System - Circuit
Pilot, load sensing
Steering System - Pump
Piston, variable displacement
Steering Cycle Times - Low Idle
5.60 s
5.60 s
Steering Cycle Times - High Idle
3.40 s
3.40 s
Hydraulic Cycle Time (1,400-1,860 rpm)
Dump
2.20 s
2.20 s
Total Hydraulic Cycle Time - Empty Bucket
18.20 s
18.20 s
Rack Back
4.50 s
4.50 s
Lower Float Down
3.50 s
3.50 s
Raise
8.00 s
8.00 s
Sound Performance - Tier 4 Final/Stage IV - Standard
Machine Sound Level (ISO 6395)
111.00 dB(A)
111.00 dB(A)
Operator Sound Level (ISO 6396)
72.00 dB(A)
72.00 dB(A)
Sound Performance - Tier 4 Final/Stage IV: Suppression
Operator Sound Level (ISO 6396)
72.00 dB(A)
72.00 dB(A)
Machine Sound Level (ISO 6395)
109.00 dB(A)
109.00 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Standard
Machine Sound Level (ISO 6395)
112.00 dB(A)
112.00 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Suppression
Machine Sound Level (ISO 6395)
110.00 dB(A)
110.00 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Standard
Operator Sound Level (ISO 6396)
73.00 dB(A)
73.00 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Suppression
Operator Sound Level (ISO 6396)
72.00 dB(A)
72.00 dB(A)
Service Refill Capacities
Coolant (Validated by Test Cell Fill Quantities)
33.00 gal (US)
125.00 l
Transmission - Validated by Test Cell Fill Quantities
29.00 gal (US)
110.00 l
Engine
Engine Power - ISO 14396
580.00 HP
432.00 kW
Gross Power - SAE J1995
588.00 HP
439.00 kW
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
Service Refill Capacities
Diesel Exhaust Fluid Tank
8.70 gal (US)
33.00 l
Sound Performance - Tier 4 Final/EU Stage V - Standard
Operator Sound Level (ISO 6396)
72.00 dB(A)
72.00 dB(A)
Machine Sound Level (ISO 6395)
111.00 dB(A)
111.00 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
13.80 ft
4202.00 mm
Ground to Top of Hood
10.90 ft
3334.00 mm
Ground to Top of Exhaust Stacks
14.80 ft
4521.00 mm
Rear Axle - Centerline to Bumper
10.50 ft
3187.00 mm
Front Axle Centerline to Bucket Tip
14.00 ft
4254.00 mm
Wheel Base
14.90 ft
4550.00 mm
Maximum Overall Length
39.30 ft
11991.00 mm
Ground to Lower Hitch Clearance
1.90 ft
568.00 mm
Clearance at Maximum Lift
11.90 ft
3641.00 mm
B-Pin Height - Maximum Lift
18.00 ft
5491.00 mm
Maximum Overall Height - Bucket Raised
24.50 ft
7455.00 mm
Reach - Maximum Lift
6.50 ft
1981.00 mm
Dimensions (Approximate) - High Lift Linkage
Ground to Top of ROPS
13.80 ft
4202.00 mm
Ground to Top of Exhaust Stacks
14.80 ft
4521.00 mm
Ground to Top of Hood
10.90 ft
3334.00 mm
Rear Axle - Centerline to Bumper
10.50 ft
3187.00 mm
Front Axle Centerline to Bucket Tip
15.30 ft
4661.00 mm
Wheel Base
14.90 ft
4550.00 mm
Maximum Overall Length
40.70 ft
12398.00 mm
Ground to Lower Hitch Clearance
1.90 ft
568.00 mm
Clearance at Maximum Lift
13.30 ft
4043.00 mm
B-Pin Height - Maximum Lift
19.30 ft
5887.00 mm
Maximum Overall Height - Bucket Raised
25.80 ft
7849.00 mm
Reach - Maximum Lift
6.80 ft
2062.00 mm
Engine
Net Power - SAE J1349:2011
538.00 HP
401.00 kW
Engine Power - ISO 14396:2002
580.00 HP
432.00 kW
Gross Power - SAE J1995:2014
588.00 HP
439.00 kW
Sound Performance - Tier 4 Final / Stage V - Standard
Operator Sound Pressure Level (ISO 6396:2008)
73.00 dB(A)
73.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)
111.00 dB(A)
111.00 dB(A)
Sound Performance - Tier 3 / Stage III - Standard
Operator Sound Pressure Level (ISO 6396:2008)
73.00 dB(A)
73.00 dB(A)
Machine Sound Power Level (ISO 6395:2008)
112.00 dB(A)
112.00 dB(A)
Features
PROVEN RELIABILITY
LONG TERM VALUE AND DURABILITY
PERFORMANCE AND PRODUCTIVITY
PERFORMANCE WITH LESS FUEL
PRODUCTIVITY WITH TECHNOLOGY
SAFETY FIRST
SAVE ON SERVICE AND MAINTENANCE
OPERATOR COMFORT AND CONTROL
PURPOSE-BUILT SPECIALTY MODELS - BLOCK HANDLER
PURPOSE-BUILT SPECIALTY MODELS - MILLYARD
PURPOSE-BUILT SPECIALTY MODELS - STEEL MILL
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
WARNING