CAT 988H Wheel Loader

Bucket

Dump Clearance At Max Raise 11.33 ft in (3466 mm)
Breakout Force 85068 lb (378.4 kN)
Bucket Width 12.5 ft in (3810 mm)
Bucket Capacity – Struck 6.9 yd3 (5.3 m3)
Bucket Capacity – Heaped 8.33 yd3 (6.4 m3)

Dimensions

Ground Clearance 1.67 ft in (549 mm)
Length With Bucket On Ground 40.08 ft in (12215 mm)
Width Over Tires 11.75 ft in (3579 mm)
Height To Top Of Cab 13.42 ft in (4128 mm)
Wheelbase 14.83 ft in (4550 mm)
Hinge Pin – Max Height 19.18 ft in (5853 mm)
Reach At Max Lift And Dump 6.66 ft in (2028 mm)

Dimensions*

Ground Clearance 1.8 ft in (0.55 m)
Rack Back Angle – Maximum Lift 45 degrees
Wheel Base Length 14.93 ft in (4.56 m)
Height – Top Of Air Cleaner 11.1 ft in (3.39 m)
C-Pin Height 3.31 ft in (1.01 m)
Centerline Of Front Axle To Hitch 7.46 ft in (2.28 m)
Centerline Of Rear Axle To Edge Of Rear Bumper 10.28 ft in (3.14 m)
Clearance At Maximum Lift And Dump 12.73 ft in (3.89 m)
Dig Depth 0.74 ft in (0.23 m)
Height – Spillguard 17.82 ft in (5.44 m)
B-Pin Height 19.2 ft in (5.86 m)
Height – Top Of Cab 13.54 ft in (4.13 m)
Height – Top Of Exhaust Stack 13.49 ft in (4.12 m)
Height – Top Of Hood 10.35 ft in (3.16 m)
Rack Back Angle – Carry 56.5 degrees
Rack Back Angle – Ground 47.8 degrees

Engine Details

Number Of Cylinders 6
Engine Make CAT
Engine Model C18 ACERT
Net Power 501 hp (373.6 kw)
Gross Power 555 hp (413.9 kw)
Power Measured @ 1800 rpm
Displacement 1104.5 cu in (18.1 L)
Bore 5.7 in (144.8 mm)
Stroke 7.2 in (182.9 mm)
Net Power – Iso 9249 501 hp (373.6 kw)
Engine Model Cat C18 ACERT
Flywheel Power 501 hp (373.6 kw)
Net Power – Iso 14396 540 hp (402.7 kw)
Gross Power – Iso 3046-2 520 hp (387.8 kw)
Net Power – Eec 80/1269 501 hp (373.6 kw)

Operational Specs

Operating Weight 109249 lb (49546 kg)
Fuel Tank Capacity 188 gal (712 L)
Hydraulic System Fluid Capacity 70.5 gal (267 L)
Engine Oil Fluid Capacity 15.9 gal (60 L)
Cooling System Fluid Capacity 27.2 gal (103 L)
Transmission Fluid Capacity 18.5 gal (70 L)
Front Axle/Diff Fluid Capacity 49 gal (186 L)
Rear Axle/Diff Fluid Capacity 49 gal (186 L)
Static Tipping Weight 76776 lb (34825 kg)
Turning Radius 28 ft in (8543 mm)
Operating Voltage 24 V
Alternator Supplied Amperage 100 amps
Rear Axle Oscillation 26 degrees
Tire Size 35/65

Transmission

Number Of Forward Gears 4
Number Of Reverse Gears 3
Max Speed – Forward 24 mph (38.6 km/h)
Max Speed – Reverse 15.6 mph (25.1 km/h)
Direct Drive – Forward 3 13.6 mph (21.9 km/h)
Direct Drive – Reverse 3 15.6 mph (25.2 km/h)
Direct Drive – Forward 4 24 mph (38.7 km/h)
Direct Drive – Forward 2 7.7 mph (12.4 km/h)
Direct Drive – Reverse 2 8.8 mph (14.2 km/h)

Steering

Steering Meets SAE and ISO standards
Total Steering Angle 86 degrees

Transmission

Converter Drive – Forward 3 12.9 mph (20.8 km/h)
Converter Drive – Reverse 3 14.7 mph (23.7 km/h)
Direct Drive – Forward 1 Lock-up disables
Converter Drive – Forward 4 22.3 mph (35.9 km/h)
Converter Drive – Forward 1 4.2 mph (6.8 km/h)
Converter Drive – Forward 2 7.3 mph (11.8 km/h)
Direct Drive – Reverse 1 4.9 mph (7.9 km/h)
Converter Drive – Reverse 1 4.7 mph (7.6 km/h)
Converter Drive – Reverse 2 8.4 mph (13.6 km/h)

Buckets

Maximum Bucket Capacity 10 yd3 (7.7 m3)
Bucket Capacities 6.4 m3-7.7 m3 8.3 yd3-10 yd3

Hydraulic System

Relief Valve Setting 4500 psi (31000 kPa)
Pump Flow Capacity 130 gal/min (492 L/min)
Raise Time 9.4 sec
Dump Time 2.4 sec
Lower Time 3.8 sec

Axles

Front Fixed
Rear Oscillating 13 degrees
Maximum Single-Wheel Rise And Fall 22.4 in (569 mm)

Brakes

Brakes Meet SAE ISO 3450:1996

Operating Specifications

Tipping Load – Straight 84038 lb (38119 kg)
Attachment Type Cat quick coupler and forks
Hinge Pin Height, Unloaded 16.2 ft in (5 m)
Overall Length 39.9 ft in (12.2 m)
Turning Radius – Sae Carry 31 ft in (9.5 m)
Tipping Load – Articulated 37 Degrees 73826 lb (33487 kg)
Rated Payload 27557.8 lb (12500 kg)

Service Refill Capacities

Cooling System 27.2 gal (103 L)
Fuel Tank Capacity 188 gal (711.7 L)
Crankcase 15.9 gal (60.2 L)
Transmission 18.5 gal (70.1 L)
Differential – Final Drives – Front 49 gal (185.5 L)
Differential – Final Drives – Rear 49 gal (185.5 L)
Hydraulic System Factory Fill 124.2 gal (470.2 L)
Hydraulic System – Tank Only 70.5 gal (266.9 L)

Hydraulic Cycle Times

Raise 9.4 s
Dump 2.4 s
Total Hydraulic Cycle Time 15.6 s
Lower Float Down – Empty 3.8 s

Cab

Cab – ROPS/FOPS Meets SAE and ISO standards
Sound Performance Meets ANSI, SAE and ISO standards

Loader Hydraulic System

Relief Valve Setting 5075 psi
Cylinders, Double Acting – Lift, Bore And Stroke 220 911 mm 8.7 35.9 in
Cylinders, Double Acting – Tilt, Bore And Stroke 220 1770 mm 8.7 69.7
Relief Valve Setting – Low Idle 348.1 psi
Main Hydraulic System Output At 2010 Rpm And 6900 Kpa (1000 Psi) 130 gal/min
Pilot System – Gear-Type Pump Output At 2,010 Rpm And 2500 Kpa (363 Psi) 20.1 gal/min
Loader Hydraulic System Main Hydraulic System Output At 2,010 Rpm And 6900 Kpa (1,000 Psi) 130 gal/min
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