SPECS SUMMARY

Net Power541 HP (403 kW)
Operating Weight112574 lb (51062 kg)
Bucket Capacities4.7-13 m3 (6.2-17 yd3)
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 lower cost per ton. Introduced in 1963, the 988 has been the industry leader for 50 years. Focused on helping our customers succeed, we have continued to build upon each new series. The 988K continues our legacy of reliability, performance, safety, operator comfort, serviceability, and efficiency.


Specifications

-Net Power541 HP (403 kW)
-Operating Weight112574 lb (51062 kg)
-Bucket Capacities4.7-13 m3 (6.2-17 yd3)
-Engine ModelCat® C18 ACERT™
-Bore5.7 in (145 mm)
-Stroke7.2 in (183 mm)
-Displacement1105 in³ (18.1 l)
-Torque Rise58 % (58 %)
-Rated Speed1,700 rpm
-Bucket Capacity Range4.7-13 m3 (6.2-17 yd3)
-Transmission TypeCat planetary power shift
-Forward - 14 mile/h (6.5 km/h)
-Forward - 27.2 mile/h (11.6 km/h)
-Forward - 312.7 mile/h (20.4 km/h)
-Forward - 421.6 mile/h (34.7 km/h)
-Reverse - 14.7 mile/h (7.5 km/h)
-Reverse - 28.3 mile/h (13.3 km/h)
-Reverse - 314.4 mile/h (23.2 km/h)
-FrontFixed
-RearTrunnion
-Oscillation Angle13°
-Fuel Tank188 gal (US) (712 l)
-Cooling System31.7 gal (US) (120 l)
-Crankcase15.9 gal (US) (60 l)
-Transmission31.7 gal (US) (120 l)
-Hydraulic System - Tank Only63.4 gal (US) (240 l)
-Maximum Flow71.3 gal/min (270 l/min)
-Relief Valve Setting - Steering4351 psi (30000 kPa)
-Hydraulic System Factory Fill125.5 gal (US) (475 l)
-Steering Cycle Times - High Idle3.4 s (3.4 s)
-Machine Sound Level (ISO 6395)110 dB(A) (110 dB(A))
-Operator Sound Level (ISO 6396)72 dB(A) (72 dB(A))
-Differential - Final Drives - Rear49.1 gal (US) (186 l)
-Steering Cycle Times - Low Idle5.6 s (5.6 s)
-Total Steering Angle86°
-Raise8 s (8 s)
-Coolant (Validated by Test Cell Fill Quantities)33 gal (US) (125 l)
-Transmission - Validated by Test Cell Fill Quantities29 gal (US) (110 l)
-Total Hydraulic Cycle Time - Empty Bucket18.2 s (18.2 s)
-Machine Sound Level (ISO 6395)111 dB(A) (111 dB(A))
-Operator Sound Level (ISO 6396)72 dB(A) (72 dB(A))
-Operator Sound Level (ISO 6396)72 dB(A) (72 dB(A))
-Machine Sound Level (ISO 6395)112 dB(A) (112 dB(A))
-Operator Sound Level ( ISO 6396)73 dB(A) (73 dB(A))
-Machine Sound Level (ISO 6395)109 dB(A) (109 dB(A))
-Steering System - PumpPiston, variable displacement
-Dump2.2 s (2.2 s)
-Lower Float Down3.5 s (3.5 s)
-Differential - Final Drives - Front49.1 gal (US) (186 l)
-Rack Back4.5 s (4.5 s)
-Steering System - CircuitPilot, load sensing
-Maximum Flow13.7 gal/min (52 l/min)
-Cat Truck Match - High Lift773-775
-Peak Torque - 1,200 rpm2104 lb/ft (2852 N·m)
-Cat Truck Match - Standard770-772
-Rated Payload - Loose Material16 t (14.5 t)
-Direct Drive - Forward 1Lock-up disabled
-Rated Payload - Quarry Face12.5 t (11.3 t)
-Peak Power Speed - 1,500 rpm - Net Power - SAE J1349541 HP (403 kW)
-Peak Power Speed - 1,500 rpm - Gross - SAE J1995588 HP (439 kW)
-Gross - ISO 14396580 HP (432 kW)
-EmissionsU.S. EPA Tier 4 Final/EU Stage IV OR Tier 3/Stage IIIA Equivalent OR Tier 2/Stage II Equivalent
-Net Power - SAE J1349541 HP (403 kW)
-Peak Power Speed1,500 rpm
-Peak Power Speed - 1,500 rpm - Gross - ISO 14396580 HP (432 kW)
-Direct Drive - Forward 27.8 mile/h (12.5 km/h)
-Direct Drive - Forward 313.9 mile/h (22.3 km/h)
-Maximum Flow at 1,400-1,860 rpm153 gal/min (580 l/min)
-Lift/Tilt System - CircuitEH- Positive Flow Control, Flow Sharing
-Pilot SystemVariable displacement piston
-Relief Valve Setting551 psi (3800 kPa)
-Relief Valve Setting - Lift/Tilt4757 psi (32800 kPa)
-Lift/Tilt SystemVariable displacement piston
-Cylinders, Double Acting - Tilt, Bore and Stroke269 mm × 685 mm (8.7 in × 27 in)
-Direct Drive - Reverse 15 mile/h (8 km/h)
-Direct Drive - Forward 424.4 mile/h (39.3 km/h)
-Direct Drive - Reverse 28.9 mile/h (14.3 km/h)
-Direct Drive - Reverse 315.8 mile/h (25.5 km/h)
-Diesel Exhaust Fluid Tank (For Tier 4 Final/Stage IV Only)8.7 gal (US) (33 l)
-Cylinders, Double Acting - Lift, Bore and Stroke210 mm × 1050 mm (8.7 in × 41.3 in)
-BrakesSAE J1473 OCT90, ISO 3450:1992

Benefits and Features

Standard Equipment

  • ELECTRICAL
  • OPERATOR ENVIRONMENT
  • POWER TRAIN
  • OTHER

Optional Equipment

  • POWER TRAIN
  • OPERATOR ENVIRONMENT
  • MISCELLANEOUS ATTACHMENTS

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