988 Large Wheel Loaders

The Cat® 988 Wheel Loader helps you move more material in less time, at a low cost per ton, for a fast return on your investment. This machine offers significant fuel savings with durability to achieve multiple lifecycles.

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The Cat® 988 is built for reliable performance in the wheel loaders range, backed by Al-Bahar's regional service and support network.

Engine Power - ISO 14396:2002: 580 hp
Operating Weight: 112574 lb
Bucket Capacity Range: 4.7-13 m3 (6.2-17 yd3)
Engine Model: Cat® C18

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Specifications
Features
Standard Equipment

Engine specifications
Engine Power - ISO 14396:2002	432 kW
Engine Model	Cat® C18
Rated Speed	1700/rpm
Peak Power Speed	1500/rpm
Gross Power - SAE J1995:2014	439 kW
Net Power - SAE J1349:2011	401 kW
Bore	145 mm
Stroke	183 mm
Displacement	18.1 l
Peak Torque - 1,200 rpm	2852 N·m
Torque Rise	58 %
Note (1)	Three engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA. 3. Meets China Nonroad Stage IV emission standards.
Note (2)	Net power advertised is the power available at the flywheel when the engine is equipped with fan at minimum speed, air intake system, exhaust system, and alternator.

Operating Specifications specifications
Operating Weight	51062 kg
Bucket Capacity Range	4.7-13 m3 (6.2-17 yd3)
Rated Payload - Quarry Face	11.3 t
Rated Payload - Loose Material	14.5 t
Cat Truck Match - Standard	770 - 772
Cat Truck Match - High Lift	773 - 775

Transmission specifications
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 1	Lock-up disabled
Direct Drive - Forward 2	12.5 km/h
Direct Drive - Forward 3	22.3 km/h
Direct Drive - Forward 4	39.3 km/h
Direct Drive - Reverse 1	8 km/h
Direct Drive - Reverse 2	14.3 km/h
Direct Drive - Reverse 3	25.5 km/h

Hydraulic System - Lift/Tilt specifications
Lift/Tilt System - Circuit	EH- Positive Flow Control, Flow Sharing
Lift/Tilt System - Pump	Variable displacement piston
Maximum Flow at 1,400-1,860 rpm	580 L/min
Relief Valve Setting - Lift/Tilt	32800 kPa
Cylinders, Double Acting - Lift, Bore and Stroke	210 mm × 1050 mm (8.7 in × 41.3 in)
Cylinders, Double Acting - Tilt, Bore and Stroke	266 mm × 685 mm (8.7 in × 27 in)
Pilot System	Variable displacement piston
Relief Valve Setting - Main	3800 kPa

Hydraulic Cycle Time (1,400-1,860 rpm) specifications
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 specifications
Steering System - Circuit	Pilot, load sensing
Steering System - Pump	Piston, variable displacement
Maximum Flow at 1,400-1,600 rpm	270 L/min
Relief Valve Setting - Steering	30000 kPa
Total Steering Angle	86 °
Steering Cycle Times - High Idle	3.4 s
Steering Cycle Times - Low Idle	5.6 s

Air Conditioning System specifications
Air Conditioning	• The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a or R1234yf. See the label or instruction manual for identification of the gas. • If equipped with R134a (Global Warming Potential = 1430), the system contains 1.8 kg (3.9 lb) of refrigerant which has a CO2 equivalent of 2.574 metric tonnes (2.837 tons).

Axles specifications
Front	Fixed
Rear	Trunnion
Oscillation Angle	13 °

Brakes specifications
Brakes	ISO 3450:2011

Operator's Cab specifications
ROPS/FOPS	ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards

Sound Performance - Tier 4 Final / Stage V specifications
Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A)
Machine Sound Power Level (ISO 6395:2008)	111 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	109 dB(A)
Note (1)	* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.”
Note (2)	** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701.
Note (3)	The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (4)	The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (5)	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.

Sound Performance - Tier 3 / Stage IIIA specifications
Operator Sound Pressure Level (ISO 6396:2008)	73 dB(A)
Machine Sound Power Level (ISO 6395:2008)	112 dB(A)
Operator Sound Pressure Level (ISO 6396:2008)*	72 dB(A)
Machine Sound Power Level (ISO 6395:2008)**	110 dB(A)
Note (1)	* For machines in European Union countries and in countries that adopt the “EU Directives” and “UK Directives.”
Note (2)	** European Union Directive “2000/14/EC” as amended by “2005/88/EC” and UK Noise Regulation 2001 No. 1701.
Note (3)	The machine sound power level was measured according to ISO 6395:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (4)	The operator sound pressure level was measured according to ISO 6396:2008. The measurement was conducted at 70% of the maximum engine cooling fan speed.
Note (5)	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.

Service Refill Capacities specifications
Fuel Tank	712 l
Cooling System	120 l
Coolant (Validated by Test Cell Fill Quantities)	125 l
Crankcase	60 l
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage V Only)	33 l
Transmission	92 l
Transmission - Validated by Test Cell Fill Quantities	110 l
Differential - Final Drives - Front	186 l
Differential - Final Drives - Rear	186 l
Hydraulic System Factory Fill	475 l
Hydraulic System - Tank Only	240 l
Note	• All non-road Tier 4 Final/Stage V diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) or ULSD blended with the following lower-carbon intensity fuels** up to: – 20% biodiesel FAME (fatty acid methyl ester)* – 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. • Engines with no aftertreatment devices can use higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer). • For pre-Tier 4 engines: Cat engines are compatible with diesel fuel blended with the following lower-carbon intensity fuels up to: – 100% biodiesel FAME (fatty acid methyl ester)* – 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels. Refer to guidelines for successful application. Please consult your Cat dealer or “Caterpillar Machine Fluids Recommendations” (SEBU6250) for details. * For use of blends higher than 20% biodiesel, consult your Cat dealer. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels.

Dimensions (Approximate) - Standard Lift Linkage specifications
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	5485 mm
Maximum Overall Height - Bucket Raised	7455 mm
Reach - Maximum Lift	1981 mm

Dimensions (Approximate) - High Lift Linkage specifications
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

Cat C18 engine is built and tested to meet your most demanding applications.
Cat torque converter with lock-up clutch helps reduce torque converter losses and lowers system heat.
Maximum responsiveness with Steering and Transmission Integrated Control (STIC™).
Moves more material efficiently with improved power and control.
Durable construction withstands the toughest loading conditions and multiple lifecycles.

World-class transmission for long life and consistent, smooth shifting; specifically designed for mining applications.
Advanced productivity electronic control strategy (APECS) transmission controls for optimal momentum on grades.
Positive flow control (PFC) hydraulic system helps increase 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) helps minimize tire spin by allowing torque to adjust to underfoot conditions.

Superior digging, higher bucket fill factors, reduced dig times.
Improved visibility over the top of the linkage.
Operators can now monitor tire pressure during operation. Any change sending a fault code to VisionLink®, helps prevent premature tire failure.
Convenient, responsive, electro-hydraulic controls help increase operator productivity.

Economy mode helps optimize engine speed control for reduced fuel consumption no matter if operating in manual throttle or throttle lock.
Flow sharing hydraulics provide full flow at reduced engine rpm.
Fully integrated electronic engine controls help make your fuel go farther.
Engine idle shutdown for less fuel used while idling.
Increased hydraulic speed and fast cycle times helps decrease idle and fuel burn, with optimal efficiency.

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 plan provides comprehensive actionable information to help you manage and improve the productivity and profitability of your operations.
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.
Easy to operate in single pedal with dynamic braking and operator assist features that allow faster training of new operators.
Increase operator efficiency with Operator Coaching through onboard tips for truck loading operations.

*Not legal for trade.

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)

OPERATOR ENVIRONMENT

Graphical Information Display, displays real time operating information, performs calibrations and customizes operator settings
CB radio ready
Air conditioner
Cat Vision, rear vision camera system
Cab, sound suppressed and pressurized, integrated rollover protective structure/falling objects protective structure (ROPS/FOPS) radio ready for entertainment, includes antenna, speakers and converter (12-volt 5-amp) and power port

POWERTRAIN

Brakes, oil-cooled, multi-disc, service/secondary
Case drain screens
Electro hydraulic parking brake
Engine, C18 Mechanically Actuated Electronic Unit Injection (MEUI™) diesel, turbocharged/aftercooled
Ground level engine shutdown switch

ADDITIONAL EQUIPMENT

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

Optional Equipment

NOTE

Standard and optional equipment may vary. Consult your Cat dealer for details.

POWERTRAIN

–50° C (–58° F) antifreeze
Crankcase guard
Engine oil change system, high speed, Wiggins
High ambient cooling – software
Cat Production Measurement

OPERATOR ENVIRONMENT

Cab precleaner
LED warning strobe
Window pull down visor
Handrail mounted mirrors

ADDITIONAL EQUIPMENT

Additional counterweight
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

OTHER OPTIONAL CONFIGURATIONS

Aggregate Handler
Block Handler
Millyard
Steel Mill

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