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988K Wheel Loader
- Standard Equipment
- Optional Equipment
- Specs
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
- Starter emergency 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 Detect 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, Cat Comfort (cloth), air suspension, six-way adjustable
- 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, 731 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
- Engine block heater 120V or 240V
- 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
- MISCELLANEOUS ATTACHMENTS
- Front and rear roading fenders
- Fast fill fuel system (Shaw-Aero)
- Cold Weather Starting (extra starter plus two batteries)
- Aggregate Handler
Specs
Overview
Long Name:
988K Wheel Loader
Name:
988K
Brand:
Caterpillar
Status:
Current
Engine
Net Power:
541 HP / 403 kW
Engine Model:
Cat® C18 ™
Bore:
5.7 in / 145 mm
Stroke:
7.2 in / 183 mm
Displacement:
1105 in³ / 18.1 l
Torque Rise:
58 % / 58 %
Rated Speed:
1700/min
Peak Torque - 1,200 rpm:
2104 lb/ft / 2852 N·m
Net Power - SAE J1349:
541 HP / 403 kW
Peak Power Speed:
1500/min
Peak Power Speed - 1,500 rpm - Gross - ISO 14396:
580 HP / 432 kW
Gross - ISO 14396:
580 HP / 432 kW
Peak Power Speed - 1,500 rpm - Gross - SAE J1995:
588 HP / 439 kW
Emissions:
U.S. EPA Tier 4 Final/EU Stage IV OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
Peak Power Speed - 1,500 rpm - Net Power - SAE J1349:
541 HP / 403 kW
Operating Specifications
Operating Weight:
112574 lb / 51062 kg
Bucket Capacity Range:
4.7-13 m3 (6.2-17 yd3)
Rated Payload - Quarry Face:
12.5 t / 11.3 t
Cat Truck Match - High Lift:
773～775
Rated Payload - Loose Material:
16 t / 14.5 t
Cat Truck Match - Standard:
770～772
Transmission
Transmission Type:
Cat-Planetenlastschaltgetriebe
Forward - 1:
4 mile/h / 6.5 km/h
Forward - 2:
7.2 mile/h / 11.6 km/h
Forward - 3:
12.7 mile/h / 20.4 km/h
Forward - 4:
21.6 mile/h / 34.7 km/h
Reverse - 1:
4.7 mile/h / 7.5 km/h
Reverse - 2:
8.3 mile/h / 13.3 km/h
Reverse - 3:
14.4 mile/h / 23.2 km/h
Direct Drive - Reverse 2:
8.9 mile/h / 14.3 km/h
Direct Drive - Reverse 3:
15.8 mile/h / 25.5 km/h
Direct Drive - Forward 2:
7.8 mile/h / 12.5 km/h
Direct Drive - Reverse 1:
5 mile/h / 8 km/h
Direct Drive - Forward 1:
Lock-up disabled
Direct Drive - Forward 3:
13.9 mile/h / 22.3 km/h
Direct Drive - Forward 4:
24.4 mile/h / 39.3 km/h
Hydraulic System - Lift/Tilt
Maximum Flow:
13.7 gal/min / 52 l/min
Maximum Flow at 1,400-1,860 rpm:
153 gal/min / 580 l/min
Lift/Tilt System:
Variable displacement piston
Cylinders, Double Acting - Tilt, Bore and Stroke:
269 mm × 685 mm (8.7 in × 27 in)
Relief Valve Setting - Main:
551 psi / 3800 kPa
Relief Valve Setting - Lift/Tilt:
4757 psi / 32800 kPa
Pilot System:
Variable displacement piston
Cylinders, Double Acting - Lift, Bore and Stroke:
210 mm × 1050 mm (8.7 in × 41.3 in)
Lift/Tilt System - Circuit:
EH- Positive Flow Control, Flow Sharing
Service Refill Capacities
Fuel Tank:
188 gal (US) / 712 l
Cooling System:
31.7 gal (US) / 120 l
Crankcase:
15.9 gal (US) / 60 l
Transmission:
31.7 gal (US) / 120 l
Hydraulic System - Tank Only:
63.4 gal (US) / 240 l
Differential - Final Drives - Rear:
49.1 gal (US) / 186 l
Hydraulic System Factory Fill:
125.5 gal (US) / 475 l
Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only):
8.7 gal (US) / 33 l
Differential - Final Drives - Front:
49.1 gal (US) / 186 l
Buckets
Bucket Capacities:
4.7-13 m3 (6.2-17 yd3)
Axles
Front:
Fixed
Rear:
Trunnion
Oscillation Angle:
13 °
Brakes
Brakes:
SAE J1473 OKT90, ISO 3450:1992
Hydraulic System - Steering
Steering System - Pump:
Piston, variable displacement
Total Steering Angle:
86 °
Maximum Flow:
71.3 gal/min / 270 l/min
Relief Valve Setting - Steering:
4351 psi / 30000 kPa
Steering Cycle Times - High Idle:
3.4 s / 3.4 s
Steering System - Circuit:
Pilot, load sensing
Steering Cycle Times - Low Idle:
5.6 s / 5.6 s
Hydraulic Cycle Time (1,400-1,860 rpm)
Total Hydraulic Cycle Time - Empty Bucket:
18.2 s / 18.2 s
Lower Float Down:
3.5 s / 3.5 s
Rack Back:
4.5 s / 4.5 s
Raise:
8 s / 8 s
Dump:
2.2 s / 2.2 s
Sound Performance - Tier 4 Final/Stage IV - Standard
Operator Sound Level (ISO 6396):
72 dB(A) / 72 dB(A)
Machine Sound Level (ISO 6395):
111 dB(A) / 111 dB(A)
Sound Performance - Tier 4 Final/Stage IV: Suppression
Machine Sound Level (ISO 6395):
109 dB(A) / 109 dB(A)
Operator Sound Level (ISO 6396):
72 dB(A) / 72 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Suppression
Operator Sound Level (ISO 6396):
72 dB(A) / 72 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Standard
Machine Sound Level (ISO 6395):
112 dB(A) / 112 dB(A)
Sound Performance - Tier 2 Equivalent/Stage II: Suppression
Machine Sound Level (ISO 6395):
110 dB(A) / 110 dB(A)
Service Refill Capacities
Coolant (Validated by Test Cell Fill Quantities):
33 gal (US) / 125 l
Transmission - Validated by Test Cell Fill Quantities:
29 gal (US) / 110 l
Sound Performance - Tier 2 Equivalent/Stage II: Standard
Operator Sound Level ( ISO 6396):
73 dB(A) / 73 dB(A)
