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 over 60 years, built on a legacy of reliability, performance, safety, operator comfort, serviceability, and productivity. The 988 XE brings improved sustainability and maximum efficiency to this machine platform.
| Engine Power - ISO 14396:2002 | 580hp |
| Engine Model | Cat® C18 |
| Rated Speed | 1,700 rpm |
| Peak Power Speed | 1,500 rpm |
| Net Power - SAE J1349:2011 | 538hp |
| Gross Power - SAE J1995:2014 | 588hp |
| Bore | 5.7in |
| Stroke | 7.2in |
| Displacement | 1105in³ |
| Peak Torque - 1,200 rpm | 2230lbf·ft |
| Torque Rise | 58% |
| Note (1) | Two engine emissions options are available: 1. Meets U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 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. |
| Operating Weight | 116362lb |
| Bucket Capacity Range | 4.7-13 m3 (6.2-17 yd3) |
| Rated Payload - Quarry Face | 12.5t |
| Rated Payload - Loose Material | 16t |
| Transmission Type | Cat switched reluctance electric drive |
| Forward 1 (virtual) | 4.3mile/h |
| Forward 2 (virtual) | 7mile/h |
| Forward 3 (virtual) | 13.8mile/h |
| Forward 4 (virtual) | 20mile/h |
| Reverse 1 (virtual) | 4.3mile/h |
| Reverse 2 (virtual) | 7mile/h |
| Reverse 3 (virtual) | 17.5mile/h |
| Lift/Tilt System - Circuit | EH-Positive Flow Control, Flow Sharing |
| Lift/Tilt System - Pump | Variable displacement piston |
| Maximum Flow at 1,400-1,600 rpm | 153gal/min |
| Relief Valve Setting - Lift/Tilt | 4757psi |
| Lift Cylinder - Bore | 8.7in |
| Lift Cylinder - Stroke | 41.3in |
| Tilt Cylinder - Bore | 8.7in |
| Tilt Cylinder - Stroke | 27in |
| Rack Back | 4.5s |
| Raise | 8s |
| Dump | 2.2s |
| Lower Float Down | 3.5s |
| Total Hydraulic Cycle Time | 18.2s |
| Steering System - Circuit | Pilot, load sensing |
| Steering System - Pump | Piston, variable displacement |
| Maximum Flow at 1,400-1,600 rpm | 71.3gal/min |
| Steering Cut Off Pressure | 4351psi |
| Total Steering Angle | 86° |
| Steering Cycle Times - High Idle | 3.4s |
| Steering Cycle Times - Low Idle | 5.6s |
| 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 con |
| Front | Fixed |
| Rear | Trunnion |
| Oscillation Angle | 13° |
| Brakes | ISO 3450:2011 |
| ROPS/FOPS | ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards |
| Operator Sound Pressure Level (ISO 6396:2008) | 72dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 109dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 109dB(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. |
| Operator Sound Pressure Level (ISO 6396:2008) | 72dB(A) |
| Machine Sound Power Level (ISO 6395:2008) | 110dB(A) |
| Operator Sound Pressure Level (ISO 6396:2008)* | 72dB(A) |
| Machine Sound Power Level (ISO 6395:2008)** | 110dB(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. |
| Fuel Tank | 147gal (US) |
| Cooling System - Jacket Water | 30gal (US) |
| Cooling Systems - Power Train | 8gal (US) |
| Engine Crankcase | 16gal (US) |
| Diesel Exhaust Fluid Tank | 8.7gal (US) |
| Transmission | 16gal (US) |
| Differential - Final Drives - Front | 49gal (US) |
| Differential - Final Drives - Rear | 49gal (US) |
| Hydraulic System - Implement/Steering | 126gal (US) |
| Note | All non-road Tier 4 Final/Stage V 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)* |
| Ground to Top of ROPS | 13.8ft |
| Ground to Top of Exhaust Stacks | 14.8ft |
| Ground to Top of Hood | 10.9ft |
| Ground to Bumper Clearance | 3.1ft |
| Rear Axle - Centerline to Bumper | 10.5ft |
| Front Axle Centerline to Bucket Tip | 14ft |
| Wheel Base | 14.9ft |
| Maximum Overall Length | 39.3ft |
| Ground to Lower Hitch Clearance | 1.9ft |
| Ground to Center of Axles | 3.2ft |
| Clearance at Maximum Lift | 11.9ft |
| B-Pin Height - Maximum Lift | 18ft |
| Maximum Overall Height - Bucket Raised | 24.5ft |
| Reach - Maximum Lift | 6.5ft |
| Note | Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. |
| Ground to Top of ROPS | 13.8ft |
| Ground to Top of Exhaust Stacks | 14.8ft |
| Ground to Top of Hood | 10.9ft |
| Ground to Bumper Clearance | 3.1ft |
| Rear Axle - Centerline to Bumper | 10.5ft |
| Front Axle Centerline to Bucket Tip | 15.3ft |
| Wheel Base | 14.9ft |
| Maximum Overall Length | 40.7ft |
| Ground to Lower Hitch Clearance | 1.9ft |
| Ground to Center of Axles | 3.2ft |
| Clearance at Maximum Lift | 13.3ft |
| B-Pin Height - Maximum Lift | 19.3ft |
| Maximum Overall Height - Bucket Raised | 25.8ft |
| Reach - Maximum Lift | 6.8ft |
| Note | Specs are calculated with 6.9 m3 (9.0 yd3) rock bucket and Michelin XLDD2 with 978 mm (3.2 ft) centerline of rear axle height. |
| Ground to Top of ROPS | 13.8ft |
| Ground to Top of Exhaust Stacks | 13.8ft |
| Ground to Top of Hood | 10.9ft |
| Ground to Bumper Clearance | 3.1ft |
| Rear Axle - Centerline to Bumper | 10.5ft |
| Front Axle Centerline to Fork Tip | 16.5ft |
| Wheel Base | 14.9ft |
| Maximum Overall Length | 41.9ft |
| Ground to Lower Hitch Clearance | 1.9ft |
| Ground to Center of Front Axle | 3.2ft |
| Fork Height with Level Arms | 8.1ft |
| Fork Top Clamp Opening | 13.1ft |
| Fork Height at Maximum Lift | 17.2ft |
| Hinge Pin Height at Maximum Lift | 16.1ft |
| Dump Angle at Maximum Lift | -39.4° |
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