988 GC Wheel Loader
Large Wheel Loaders
Details
Operating Weight
112426 lb
Bucket Capacity Range
6.4-7.6 m3 (8.3-10 yd3)
Engine Model
Cat® C15
Overview
MOVE MORE MATERIAL EFFICIENTLY AND AT A LOW COST
The Cat® 988 GC Wheel Loader helps you move more material at a low cost per hour for a fast return on your investment. This machine offers significant fuel savings and up to 10% lower owning and operating cost than the 988K.
Benefits
OPTIMUM 50 TON TRUCK MATCH LOADER
Achieve even greater production with an optimized truck match to maximize the volume of material moved at the lowest operating cost per ton.<br />
LOWER OWNING & OPERATING COST
Designed to reduce your service and maintenance costs with grouped service points and ground level access to the electrical service center.
EASY TO OPERATE AND MAINTAIN
Enhanced operator controls deliver greater efficiency, productivity, and comfort.
LESS CO2 EMISSIONS
The 988 GC emits up to 5% less CO2 than the previous 988K.
Features at a Glance
- PROVEN RELIABILITY
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- Cat C15 engine is built and tested to meet your most demanding applications.
- Cat torque converter with lock-up clutch eliminates torque converter losses and lowers system heat.
- Maximum responsiveness with Steering and Transmission Integrated Control (STIC™).
- Moves more material more efficiently with improved power and control.
- Transmission neutralizer pedal helps extend service brake life and allows full power during stationary loading.
- Mechanically Actuated Electronic Unit Injection (MEUI™) fuel system and Advanced Diesel Engine Management (ADEM™) A5 electronic control module manage fuel delivery for optimum performance and quick engine response.
- LONG TERM VALUE AND DURABILITY
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- World-class transmission for long life and consistent, smooth shifting; specifically designed for mining applications.
- Advanced Productivity Electronic Control Shifting (APECS) transmission controls for greater 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.
- Advanced filtration system for extended performance and reliability of the hydraulic system.
- ACHIEVE GREATER PRODUCTIVITY
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- Optimum 50-ton truck match loader.
- Dump clearance designed for efficient truck loading up to 775.
- Improved visibility over the top of the linkage.
- Rated payload aligned with 988.
- Convenient, responsive electro-hydraulic controls help increase operator productivity.
- Integrated steering and transmission controls.
- POWERFUL EFFICIENCY
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- Up to 5% less fuel consumption than the 988K.
- Flow sharing hydraulics for full flow at reduced engine rpm.
- Fully integrated electronic engine controls make your fuel go farther.
- Engine Idle Shutdown for less fuel used while idling.
- PRODUCTIVITY WITH TECHNOLOGY
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- Cat Technologies developed to monitor, manage, and enhance your jobsite operations.
- Cat Payload ready provides accurate weighing* of the materials you are loading and hauling. Payload data is displayed in real-time to improve productivity and reduce overloading.
- Optional 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 subscription provides comprehensive actionable information to help you manage and improve the productivity and profitability of your operations.
- Standard work tool recognition provides awareness of bucket install.
- SAFETY FIRST
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- Achieve precise positioning for easy loading in tight areas with 43 degrees of steering articulation.
- Precise machine control by load-sensing hydraulic steering system.
- Standard LED lights for improved visibility.
- Optional left- and right-hand stairs with 45-degree angle.
- Computerized monitoring system with warning indicators.
- Standard rear Cat Vision enhances visibility behind the machine, helping you work safely and confidently.
- Pressurized cabin with filtered air and reduced sound levels.
- SAVE ON SERVICE AND MAINTENANCE
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- Up to 25% lower maintenance costs than the 988K.
- Grouped service points provide easy access to critical daily service checks.
- Electro-hydraulic controls.
- Swing-out engine compartment service doors.
- Reduced waste with maintenance-free batteries.
- Ecology drains to help prevent spills and allow for easy service.
- Vehicle Information Management System (VIMS™) notifications to help resolve problems before failure.
- Ground level access to transmission control valves.
- OPERATOR COMFORT AND CONTROL
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- World-class operator comfort and ergonomics.
- Comfort Series III seats with extra thick, contoured cushions help provide total comfort throughout the workday.
- Easy-to-reach levers and seat-mounted implement pod to help reduce fatigue.
- Ergonomic switch placement and displays with large, backlit switches and LED indicators.
- Two-position rocker switch activates the electro hydraulic parking brake.
- Reduced vibrations from isolated cab mounts and seat air suspension.
- Automatic cab temperature controls.
- Up to 47% quieter STIC steering significantly reduces operator sound levels.
- SUSTAINABILITY
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Sustainability
- The Cat® C15 engine is available in configurations that meet U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards or Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
- The 988 GC emits up to 5% less CO2/hr than the 988K.
- Cat U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 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)* or 100% renewable diesel, HVO (hydrotreated vegetable oil) and GTL (gas-to-liquid) fuels
- Cat engines meeting Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, are compatible with diesel fuel blended with the following lower-carbon intensity fuels up to: 100% biodiesel FAME (fatty acid methyl ester)** or 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.
- Engine Idle Management System and Auto Engine Idle Shutdown reduces idle RPM and maximize fuel efficiency.
- Load sensing hydraulics produce flow and pressure on-demand and only in amounts necessary to perform the needed functions.
- Cat Payload technology maximizes loading efficiency, helping operators of every skill level work more accurately to reduce load time, fuel costs and greenhouse gas emissions.
- Extended maintenance intervals not only reduce downtime but decrease the amount of fluid and filters that are replaced over the life of the machine.
- Optional Cat clean emissions module includes Diesel Particulate Filter (DPF), Diesel Oxidation Catalyst (DOC), and Selective Catalytic Reduction (SCR) technologies to reduce the engine’s emissions.
Specifications
Full Specifications
- Engine
-
Engine Model
Cat® C15Rated Speed
2000 rpmPeak Power Speed
1600 rpmGross Power - SAE J1995:2014
456 hpNet Power - SAE J1349:2011
448 hpBore
5.4 inStroke
6.75 inDisplacement
927 in³Peak Torque (1,200 rpm) - SAE J1995:2014
1778 lbf·ftTorque Rise
16%Note (1)
Two engine emission options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan emission standards. 2. Meets Brazil MAR-1 emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.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.Note (3)
Net power at the flywheel when the fan is at maximum speed is 304 kW / 408 hp per SAE reference conditions.
- Operating Specifications
-
Operating Weight
112426 lbBucket Capacity Range
6.4-7.6 m3 (8.3-10 yd3)Rated Payload - Quarry Face
12.5 ton (US)Cat Truck Match - High Lift
772/773/775
- Transmission
-
Transmission Type
Cat planetary power shiftForward - 1
5 mile/hForward - 2
8 mile/hReverse - 1
5 mile/hReverse - 2
8 mile/hDirect Drive - Forward 1
Lock-up disabledDirect Drive - Forward 2
8 mile/hDirect Drive - Forward 3
14 mile/hDirect Drive - Forward 4
24 mile/hDirect Drive - Reverse 1
Lock-up disabledDirect Drive - Reverse 2
9 mile/hDirect Drive - Reverse 3
16 mile/hDirect Drive - Reverse 4
25.4 mile/hNote
Travel speeds based on 35/65-R33 tires.
- Hydraulic System - Lift/Tilt
-
Lift/Tilt System - Circuit
EH - Load SenseLift/Tilt System - Pump
Variable displacement pistonMaximum Flow at 2,165 rpm
159 gpmRelief Valve Setting - Lift/Tilt
4598 psiCylinders, Double Acting - Lift, Bore and Stroke
190 mm x 1216 mm (7.5 in x 48 in)Cylinders, Double Acting - Tilt, Bore and Stroke
170 mm x 722 mm (6.7 in x 28.4 in)Pilot System
Variable displacement pistonRelief Valve Setting
500 psi
- Hydraulic Cycle Times
-
Rack Back
3.8 sRaise
7.5 sDump
3.0 sLower Float Down
4.6 sTotal Hydraulic Cycle Time - Empty Bucket
18.9 s
- Hydraulic System - Steering
-
Steering System - Circuit
Pilot, load sensingSteering System - Pump
Piston, variable displacementMaximum Flow at 2,165 rpm
52 gpmRelief Valve Setting - Steering
4000 psiTotal Steering Angle
70°Steering Cycle Times - High Idle
3 sSteering Cycle Times - Low Idle
5.2 s
- Air Conditioning System
-
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
-
Front
FixedRear
TrunnionOscillation Angle
+/-12.5°
- Brakes
-
Brakes
ISO 3450:2011
- Operator's Cab
-
ROPS/FOPS
Rollover Protective Structure/Falling Objects Protective Structure (ROPS/FOPS) meet ISO 3471:2008 and ISO 3449:2005 Level II standards
- Sound Performance - Tier 4 Final / Stage V
-
Operator Sound Pressure Level (ISO 6396:2008)
73 dB(A)Machine Sound Power Level (ISO 6395:2008)
113 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.
- Sound Performance - Tier 3 / Stage IIIA
-
Operator Sound Pressure Level (ISO 6396:2008)
74 dB(A)Machine Sound Power Level (ISO 6395:2008)
113 dB(A)Operator Sound Pressure Level (ISO 6396:2008)*
73 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
-
Fuel Tank
141 gal (US)Cooling System
27 gal (US)Engine Crankcase
9 gal (US)Diesel Exhaust Fluid Tank
5.5 gal (US)Transmission
20 gal (US)Differential - Final Drives - Front
49 gal (US)Differential - Final Drives - Rear
45 gal (US)Hydraulic System Factory Fill
94 gal (US)Note
Cat diesel engines are required to use ULSD (ultra-low sulfur diesel fuel with 15 ppm of sulfur or less) and are compatible* with 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. * While Caterpillar engines are compatible with these alternative fuels, some regions may not allow their use. ** Tailpipe greenhouse gas emissions from lower-carbon intensity fuels are essentially the same as traditional fuels. *** Engines with no aftertreatment devices are compatible with higher blends, up to 100% biodiesel (for use of blends higher than 20% biodiesel, consult your Cat dealer).
- Dimensions (Approximate) - High Lift
-
Ground to Top of ROPS
13.5 ftGround to Top of Exhaust Stacks
13.3 ftGround to Top of Hood
10.7 ftGround to Fuel Tank Clearance
2.2 ftRear Axle - Centerline to Bumper
10.3 ftFront Axle Centerline to Bucket Tip
16.7 ftWheel Base
12.5 ftMaximum Overall Length
39.5 ftGround to Lower Hitch Clearance
1.5 ftGround to Center of Front Axle
3.2 ftClearance at Maximum Lift (45° Dump)
12 ftB-Pin Height - Maximum Lift
18.7 ftMaximum Overall Height - Bucket Raised
25 ftReach at Maximum Lift (45° Dump)
7.7 ftNote
Specifications are calculated with 6.9 m3 (9.0 yd3 ) rock bucket equipped with Michelin XLDD1 35/65 R33 tires.
Equipment
- Standard Equipment
-
NOTE
- Standard and optional equipment may vary. Consult your Cat dealer for details.
ELECTRICAL
- Alarm, back-up
- Alternator, single 145 amp
- Batteries, maintenance free
- Converter, 10/15 amp, 24V to 12V
- Lighting system (LED, work lights, access and service platform lighting)
- Starting and charging system, 24V
- Auxiliary jump start receptacle
OPERATOR ENVIRONMENT
- Cab precleaner
- Lights, LED
- AM/FM radio
- 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/falling objects 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
– Powertrain oil temperature - Light, cab, dome
- Lunchbox, beverage holders
- Mirrors, rearview (externally mounted)
- Seat, Cat Comfort Cloth, air suspension, six-way adjustable
- Seat belt minder
- Seat belt, retractable, 76 mm (3 in) wide
- Steering and Transmission Integrated Control (STIC™) system
- UV glass
- Transmission gear indicator
- Wet-Arm wipers/washers (front and rear)
– Intermittent front and rear wipers - Lights, directional
- Cat Production Measurement ready
POWERTRAIN
- Brakes, oil-cooled, multi-disc, service/secondary
- Case drain screens
- Electro hydraulic parking brake
- Engine, C15 MEUI™ diesel, turbocharged/aftercooled
- Ground level emergency engine shutdown switch
- Turbine precleaner, engine air intake
- Manual switch and automatic fuel priming
- Torque converter, neutralizer
- Transmission, planetary power shift, 4F/4R electronic control
- Cat Integrated Powered Electronics
- Automatic retarding controls
- Crankcase guard
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, 535 L (141 gal)
- 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.
POWERTRAIN
- High ambient cooling – software
- Starting aid, ether, automatic
- Antifreeze -50°C (-58°F)
OPERATOR ENVIRONMENT
- Cat Production Measurement
- CB radio-ready
- Cat Detect, object detection system
ADDITIONAL EQUIPMENT
- Front and rear roading fenders



