988H Wheel Loaders Steel Mill Arrangements

Specifications

Engine

Net Power

501 hp

373 kW

Engine Model

Cat® C18 ACERT™

Cat® C18 ACERT™

Gross Power

555 hp

414 kW

Net Power – ISO 9249

501 hp

373 kW

Gross Power – ISO 3046-2

520 hp

388 kW

Bore

5.7 in

145 mm

Stroke

7.2 in

183 mm

Displacement

1104.5 in3

18.1 L

Net Power – EEC 80/1269

501 hp

373 kW

Net Power – ISO 14396

532 hp

393 kW

Operating Specifications

Operating Weight

128328 lb

58330 kg

Attachment Type

9 yd3 Rock Bucket

9 yd3 Rock Bucket

Breakout Force – SAE Rated (3.88 m linkage)

45977 lb

49062 kg

Breakout Force – SAE Rated (4.25 m linkage)

116780 lb

52971 kg

Hinge Pin Height, Unloaded

16.11 ft

4909 mm

Overall Length

40.75 ft

12410 mm

Tipping Load – Articulated 43°

66602 lb

30210 kg

Tipping Load – Straight

74651 lb

33861 kg

Turning Radius at SAE Carry

28.75 ft

8762 mm

Transmission

Converter Drive – Forward 1

4.2 mph

6.7 km/h

Converter Drive – Forward 2

7.3 mph

11.8 km/h

Converter Drive – Forward 3

12.9 mph

20.8 km/h

Converter Drive – Forward 4

22.3 mph

36 km/h

Converter Drive – Reverse 1

4.7 mph

7.6 km/h

Converter Drive – Reverse 2

8.4 mph

13.5 km/h

Converter Drive – Reverse 3

14.7 mph

23.7 km/h

Direct Drive – Forward 1

Lock-up disabled

Lock-up disabled

Direct Drive – Forward 2

7.7 mph

12.3 km/h

Direct Drive – Forward 3

13.6 mph

21.9 km/h

Direct Drive – Forward 4

24 mph

38.6 km/h

Direct Drive – Reverse 1

4.9 mph

7.9 km/h

Direct Drive – Reverse 2

8.8 mph

14.1 km/h

Direct Drive – Reverse 3

15.6 mph

25.1 km/h

Service Refill Capacities

Fuel Tank

188 gal

712 L

Cooling System

27.2 gal

103 L

Crankcase

15.9 gal

60 L

Transmission

18.5 gal

70 L

Differentials and Final Drives – Front

49 gal

186 L

Differentials and Final Drives – Rear

49 gal

186 L

Hydraulic System (factory fill)

124.2 gal

470 L

Hydraulic System (tank only)

70.5 gal

267 L

Buckets

Bucket Capacities

6.4-7.7 m3 (8.3-10 yd3)

6.4-7.7 m3 (8.3-10 yd3)

Axles

Maximum Single-Wheel Rise and Fall

22.4 in

568 mm

Front

Fixed

Fixed

Rear

Oscillating ±13°

Oscillating ±13°

Brakes

Brakes

Meet SAE/ISO 3450:1996

Meet SAE/ISO 3450:1996

Cab

Cab – ROPS/FOPS

Meets SAE and ISO standards

Meets SAE and ISO standards

Sound Performance

Meets ANSI, SAE and ISO standards

Meets ANSI, SAE and ISO standards

Steering

Steering

Meets SAE and ISO standards

Meets SAE and ISO standards

Total Steering Angle

74 Degrees

74 Degrees

Loader Hydraulic System

Main Hydraulic System Output at 2010 rpm and 6900 kPa (1000 psi)

130 gal/min

492 L/min

Relief Valve Setting

5075 psi

35000 kPa

Cylinders, Double Acting: Lift, Bore and Stroke

220 × 911 mm (8.7 × 35.9 in)

220 × 911 mm (8.7 × 35.9 in)

Cylinder, Double Acting: Tilt, Bore and Stroke

220 × 1770 mm (8.7 × 69.7 in)

220 × 1770 mm (8.7 × 69.7 in)

Pilot System, Gear-Type Pump Output at 2010 rpm and 2500 kPa (363 psi)

20.1 gal/min

76 L/min

Relief Valve Setting (low idle)

348.1 psi

2400 kPa

Weights

Operating Weight

128328 lb

58330 kg

Benefits & Features

Structures Combining the use of robotic welding and castings in critical high stress areas, more than 80 percent of Cat® Large Wheel Loader structures are robotically welded to provide highly consistent welds and increased strength. Castings are also used in several areas to increase strength by helping spread the loads and reduce the number of parts. Front Frame and Rear Frame Highly engineered and a field proven combination, Cat® Large Wheel Loaders use high strength plates and castings which distribute loads and increase structural robustness. A key differentiator from other manufacturers’ machines is the box section rear frame and box section loader tower. The box section absorbs tensional forces generated in a loading cycle, maintaining alignment for hitch pins and driveline. The box shaped loader tower resists shock and torsional loads, maintaining hitch and loader linkage pin alignment, maximizing pin life. Axle-Shaft, Oil Disc Brakes These brakes are adjustment free, fully hydraulic and completely sealed. Disc face grooves provide cooling even when brakes are applied for a longer component life. Location of brakes allow for improved serviceability. The axle shaft brake design allows for brake service while leaving the final drive intact. Axle-shaft brakes require less force by operating on the low torque side of the axle. Combined with improved axle oil circulation for increased cooling, the oil-enclosed, multiple disc brake design improves durability. Reliability Maximizing uptime, long life – it’s what you expect from your Cat Wheel Loader. » Learn More Operator Station Steel roof and cab skirts provide additional protection from heat and debris. Transmission Override A transmission override control in the cab allows the operator a secondary transmission control in the event of damage to transmission Electronic Control Module (ECM). The operator can select 1F or 1R to move the machine to a safe area for repairs to be made. Machine Guarding Front frame bottom guard and steering cylinder guards protect sensitive machine components from the effects of hot materials. Solid metal steps, profiled bumper guards and solid metal handrails are designed to survive tight working spaces. Hydraulic and Electrical System All exposed wiring harnesses and hydraulic hoses are insulated with protective sleeving to protect from extreme heat. Guarding on fuel and hydraulic tanks provides protection from puncture and excessive heat. Optional EcoSafe Hydraulic Fluid Fire resistant EcoSafe hydraulic fluid is available from the factory and is fully compatible with Caterpillar hydraulic system components. Extreme Temperature Axle Seals Caterpillar extreme temperature axle seals provide excellent sealing characteristics and life in the extreme heat of the still mill application. Parking Brake Override The parking brake override control, located at the rear of the bumper, allows the parking brake to be disabled with the engine not running. Steel Mill Specific Features Safeguarding the operator and critical machine components. » Learn More The 988H features are specifically designed to increase productivity on your job site. Engine The Cat® C18 engine with ACERT™ Technology is U.S. EPA Tier 3 and EU Stage III compliant. It features increased horsepower and efficient fuel management for quick response, high productivity and exceptional service life. A sculptured cylinder block provides greater strength and is lighter weight. Positive Flow Control Hydraulics The 988H Positive Flow Control (PFC) Hydraulic System is setting a new standard for hydraulic response, performance and efficiency. The implement system is equipped with one electronically controlled, fully variable piston pump for fast, productive cycles. PFC has concurrent pump and valve control. This is achieved through an integrated solenoid with a force feedback system which keeps the displacement where it is required for optimized pump control. By optimizing pump control, hydraulic oil flow is proportionate to implement lever stroke. Benefits: Lowered fuel consumption by up to five percent Improved hydraulic response, giving the operator better feel and control of the bucket Improved power efficiency and lower system heat Productivity Designed with the right features to meet the daily demands of your job site. » Learn More Best-in-Class Working Environment A comfortable operator is a productive operator, which is why Caterpillar has designed the 988H with a best-in-class working environment for this size wheel loader class. World class cabs incorporate features for operator comfort and ergonomics, visibility and ease of operation. Ergonomic controls are fully adjustable and designed for low-effort comfort. Switches and controls for various systems are located within easy reach of the operator. Interior noise levels are reduced to a quiet 72 dB(A). Caterpillar Monitoring System (EMS-III) provides information on machine’s major components. This includes gauge displays for the fuel tank level; temperature gauges for the engine coolant, torque converter and hydraulic oil; tachometer analog gauge with digital readout for gear selection and ground speed and a monitoring system. New options to include heated seat for cold weather operations and radio offerings of Bluetooth, MPS and satellite options are now available. Operator Comfort Best-in-class working environment » Learn More Optional Swing Out Radiator Fan The optional swing out radiator fan provides for easy access to the radiator cores for easy cleaning and inspection. Optional Auto Reversing, Hydraulically Driven Demand Fan The demand fan automatically adjusts fan speed for optimal cooling, resulting in reduced power draw on the engine, better fuel efficiency and more power for hydraulics and rimpull. The fan reverses automatically at preset intervals to remove debris from the inlet screen. It can also be reversed manually from the cab. Component Access Swing out doors on both sides of the engine compartment provide easy access to the engine oil dipstick and filler spout, S∙O∙SSM ports, fuel filters air conditioner compressor, engine oil filters, alternators, starting receptacle, air filter service indicator, cooler fill and ether starting aid. There are also ground level viewable sight gauges on all major systems and centralized remote pressure taps. Shutdown and Lockout Features An electrical disconnect switch and hydraulic lockout switch allow service technicians to perform maintenance while the machine stays static. Other shutdown or lockout devices include ground level engine shutdown and ground level steering hitch lock lever. Serviceability Easy to Maintain. Easy to Service. » Learn More Entry and Exit Getting on and off the machine is one of the leading causes of injury on a job site. Cat® Wheel Loaders have a number of features to ensure your operator gets safely on and off the machine. Features include primary and secondary stairwell exits, punch stamped tread plates, ground level nighttime stairwell light switch, full perimeter railings on upper platforms, side platform emergency egress and toe kicks and optional roading fenders. Rearview Camera With the new optional rearview camera, visibility is greatly enhanced. The camera is located in a pocket on the grill to protect it from damage and the elements. The camera can be set to activate only when the transmission is in reverse to help eliminate distractions in the cab, especially when in dark environments. Visibility Cat® Wheel Loaders offer a number of standard and optional features to enhance job site visibility. Standard and optional features include long life LED lights, articulated wiper/washer system with intermittent features, optional rear vision camera, optional high intensity discharge lights, optional warning beacon and optional turn signals. Safety Built to Protect You » Learn More