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988 Wheel Loader
938M Aggregate Handler Small Wheel Loader

Engine

Net Power - SAE J1349:2011 538 hp - -
Engine Power - ISO 14396:2002 580 hp - -
Gross Power - SAE J1995:2014 588 hp - -
Engine Model Cat® C18 ™ Cat® C7.1 -
Rated Speed 1700/min - -
Peak Power Speed 1500/rpm - -
Emissions U.S. EPA Tier 4 Final, EU Stage V, and Japan 2014 emission standards, Brazil MAR-1 and China Nonroad Stage IV emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA, and U.S. EPA Tier 2 and EU Stage II The Cat C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 4 Final emission standards. -
Bore 5.7 in 4 in -
Stroke 7.2 in 5 in -
Displacement 1105 in³ 427 in³ -
Peak Torque - 1,200 rpm 2230 lb/ft - -
Torque Rise 58 % - -
Maximum Gross Power - 188 hp -
Maximum Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) - 188 hp -
Maximum Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) - 1800 r/min -
Maximum Rated Gross Power - ISO 14396 - 188 hp -
Maximum Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*) - 1600 r/min -
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4) - 649 ft·lbf -
Note (3) - No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems. -
Note (1) - *Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology. -
Note (2) - Net power ratings are tested at the reference conditions for the specified standard and denote power available at the flywheel when the engine is equipped with alternator, air cleaner, emission components and fan at specified speed. -
Maximum Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) - 173 hp -
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) - 627 ft·lbf -
Maximum Net Torque - ISO 9249 (Performance Power Mode: Range 1-4) - 650 ft·lbf -
Net Power - ISO 9249 (metric) at Minimum Fan Speed (Performance Power Mode: Range 1-4) - 186 hp -
Net Power - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) - 184 hp -
Maximum Gross Power - ISO 14396 (metric) (Performance Power Mode: Range 1-4) - 190 hp -
Net Power - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) - 183 hp -
Net Power - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) - 170 hp -
Net Power (Standard Power Mode: Range 1-3*) - 1600 r/min -
Maximum Gross Power - ISO 14396 (metric) (Standard Power Mode: Range 1-3*) - 176 hp -
Net Power (Performance Power Mode: Range 1-4) - 1800 r/min -
Maximum Rated Gross Power - ISO 14396 (metric) - 190 hp -
Net Power - ISO 9249 (metric) at Minimum Fan Speed (Standard Power Mode: Range 1-3*) - 172 hp -
Maximum Net Torque - ISO 9249 (Standard Power Mode: Range 1-3*) - 628 ft·lbf -
Net Power - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) - 170 hp -
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) - 664 ft·lbf -
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) - 642 ft·lbf -

Operating Specifications

Operating Weight 112574 lb - -
Rated Payload - Quarry Face 12.5 t - -
Rated Payload - Loose Material 16 t - -
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3) - -
Cat Truck Match - Standard 770~772 - -
Cat Truck Match - High Lift 773~775 - -
Full Turn Tip Load (2) - 10 662 kg (23,504 lb)^ -
Full Turn Tip Load (1) - 10 551 kg (23,260 lb)** -
Note (2) - ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. -
Note (1) - **Aggregate Handler machine equipped with full counterweight and optional guards. -

Transmission

Transmission Type Cat planetary powershift - -
Forward - 1 4 mile/h - -
Forward - 2 7.2 mile/h - -
Forward - 3 12.7 mile/h - -
Forward - 4 21.6 mile/h - -
Reverse - 1 4.7 mile/h - -
Reverse - 2 8.3 mile/h - -
Reverse - 3 14.4 mile/h - -
Direct Drive - Forward 1 Lock-up disabled - -
Direct Drive - Forward 2 7.8 mile/h - -
Direct Drive - Forward 3 13.9 mile/h - -
Direct Drive - Forward 4 24.4 mile/h - -
Direct Drive - Reverse 1 5 mile/h - -
Direct Drive - Reverse 2 8.9 mile/h - -
Direct Drive - Reverse 3 15.8 mile/h - -
Forward and Reverse - Range 4 - 25 mile/h -
Note - * Creeper control allows maximum speed range adjustability from 1 km/h (0.6 mph) to 13 km/h (8 mph) in Range 1 through the secondary display when equipped. Factory default is 7 km/h (4.4 mph). -
Forward and Reverse - Range 1* - 1-13 km/h (0.6-8 mph) -
Forward and Reverse - Range 2 - 8 mile/h -
Forward and Reverse - Range 3 - 17 mile/h -

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing - -
Lift/Tilt System Variable displacement piston - -
Maximum Flow at 1,400-1,860 rpm 153 gal/min - -
Relief Valve Setting - Lift/Tilt 4757 psi - -
Cylinders, Double Acting - Lift, Bore and Stroke 210 mm × 1050 mm (8.7 in × 41.3 in) - -
Cylinders, Double Acting - Tilt, Bore and Stroke 269 mm × 685 mm (8.7 in × 27 in) - -
Pilot System Variable displacement piston - -
Relief Valve Setting - Main 551 psi - -

Hydraulic Cycle Time (1,400-1,860 rpm)

Rack Back 4.5 s - -
Raise 8 s - -
Dump 2.2 s - -
Lower Float Down 3.5 s - -
Total Hydraulic Cycle Time - Empty Bucket 18.2 s - -

Hydraulic System - Steering

Steering System - Circuit Pilot, load sensing - -
Steering System - Pump Piston, variable displacement - -
Maximum Flow 71.3 gal/min - -
Relief Valve Setting - Steering 4351 psi - -
Total Steering Angle 86 ° - -
Steering Cycle Times - High Idle 3.4 s - -
Steering Cycle Times - Low Idle 5.6 s - -

Air Conditioning System

Air Conditioning The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential = 1430). The system contains 1.8 kg of refrigerant which has a CO2 equivalent of 2.574 metric tonnes. The air conditioning system on this machine contains the fluorinated greenhouse gas refrigerant R134a (Global Warming Potential – 1430. The system contains 1.9 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes. -

Axles

Front Fixed - -
Rear Trunnion - -
Oscillation Angle 13 ° - -

Brakes

Brakes ISO 3450:2011 - -

Operator's Cab

ROPS/FOPS ROPS/FOPS meet ISO 3471:2008 and ISO 3449:2005 Level II standards - -

Service Refill Capacities

Fuel Tank 188 gal (US) 51.5 gal (US) -
Cooling System 31.7 gal (US) 8.5 gal (US) -
Coolant (Validated by Test Cell Fill Quantities) 33 gal (US) - -
Crankcase 15.9 gal (US) - -
Diesel Exhaust Fluid Tank 8.7 gal (US) - -
Transmission 31.7 gal (US) - -
Transmission - Validated by Test Cell Fill Quantities 29 gal (US) - -
Differential - Final Drives - Front 49.1 gal (US) - -
Differential - Final Drives - Rear 49.1 gal (US) - -
Hydraulic System Factory Fill 125.5 gal (US) - -
Hydraulic System - Tank Only 63.4 gal (US) - -
Rear Axles - 9.2 gal (US) -
Hydraulic System - Including Tank - 44.9 gal (US) -
Hydraulic Tank - 23.8 gal (US) -
Diesel Exhaust Fluid (DEF) Tank - 5 gal (US) -
Engine Crankcase - 5.3 gal (US) -
Front Axles - 9.2 gal (US) -
Transmission - Gear Box - 2.9 gal (US) -

Sound Performance - Tier 4 Final / Stage V - Standard

Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
Machine Sound Power Level (ISO 6395:2008) 111 dB(A) - -

Sound Performance - Tier 3 / Stage III - Standard

Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
Machine Sound Power Level (ISO 6395:2008) 112 dB(A) - -

Dimensions (Approximate) - Standard Lift Linkage

Ground to Top of ROPS 13.8 ft - -
Ground to Top of Exhaust Stacks 14.8 ft - -
Ground to Top of Hood 10.9 ft - -
Rear Axle - Centerline to Bumper 10.5 ft - -
Front Axle Centerline to Bucket Tip 14 ft - -
Wheel Base 14.9 ft - -
Maximum Overall Length 39.3 ft - -
Ground to Lower Hitch Clearance 1.9 ft - -
Clearance at Maximum Lift 11.9 ft - -
B-Pin Height - Maximum Lift 18 ft - -
Maximum Overall Height - Bucket Raised 24.5 ft - -
Reach - Maximum Lift 6.5 ft - -

Dimensions (Approximate) - High Lift Linkage

Ground to Top of ROPS 13.8 ft - -
Ground to Top of Exhaust Stacks 14.8 ft - -
Ground to Top of Hood 10.9 ft - -
Rear Axle - Centerline to Bumper 10.5 ft - -
Front Axle Centerline to Bucket Tip 15.3 ft - -
Wheel Base 14.9 ft - -
Maximum Overall Length 40.7 ft - -
Ground to Lower Hitch Clearance 1.9 ft - -
Clearance at Maximum Lift 13.3 ft - -
B-Pin Height - Maximum Lift 19.3 ft - -
Maximum Overall Height - Bucket Raised 25.8 ft - -
Reach - Maximum Lift 6.8 ft - -

Buckets

Bucket Capacities 4.7-13 m3 (6.2-17 yd3) 2.9-5.0 m3 (3.8-6.5 yd3) -

Weights

Operating Weight - 36839 lb -
Note (2) - ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. -
Note (1) - **Aggregate Handler machine equipped with full counterweight and optional guards. -
Operating Weight (2) - 16 710 kg (36,839 lb)^ -
Operating Weight (1) - 16 199 kg (35,712 lb)** -

Cab

ROPS - ISO 3471:2008 -
Note (1) - * Measurements were conducted with cab doors and windows closed and at 70% of maximum engine cooling fan speed. Sound level may vary at different engine cooling fan speeds. -
FOPS - ISO 3449:2005 LEVEL II -
Declared Sound Levels - Declared Sound Levels
– Operator Sound Pressure Level (ISO 6396:2008): 68 dB(A)*
– Exterior Sound Power Level (ISO 6395:2008): 101 dB(A)*
-

Steering

Maximum Flow - Steering Pump - 34 gal/min -
Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited - 3.1 s -
Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed - 2.3 s -
Steering Cylinder, Double Acting - Bore Diameter - 3.1 in -
Steering Cylinder, Double Acting - Rod Diameter - 2 in -
Steering Cylinder, Double Acting - Stroke - 15.7 in -
Note (1) - Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders. -
Maximum Working Pressure - Steering Pump - 3500 psi -
Note (2) - Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). -

Loader Hydraulic System

Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure - 4351 psi -
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure - 4061 psi -
Note (1) - Implement system uses a dedicated load sensing variable displacement pump with dual double acting lift cylinders and a single double acting tilt cylinder. -
Tilt Cylinder, Double Acting - Bore Diameter - 5.9 in -
Relief Pressure - Tilt Cylinder - 4351 psi -
Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Dump (at Maximum Lift Height) - 1.5/1.7 seconds -
Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Total Cycle Time - 9.7/10.6 seconds -
Tilt Cylinder, Double Acting - Rod Diameter - 3.5 in -
Maximum Flow - Implement Pump - 50 gal/min -
Note (2) - Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). -
Tilt Cylinder, Double Acting - Stroke - 21.9 in -
Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Raise (Ground Level to Maximum Lift) - 5.5/6.2 seconds -
Maximum Flow - Implement Pump - 4th Function Maximum Flow* - 42 gal/min -
Note (3) - * 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display when equipped. -
Lift Cylinder, Double Acting - Stroke - 31.1 in -
Maximum Working Pressure - Implement Pump - 4061 psi -
Lift Cylinder, Double Acting - Bore Diameter - 4.7 in -
Cycle Times - Performance (HP+) at 1,800 rpm/Standard Power Mode at 1,600 rpm - Float Down (Maximum Lift to Ground Level) - 2.7/2.7 seconds -
Lift Cylinder, Double Acting - Rod Diameter - 2.6 in -
Maximum Flow - Implement Pump - 3rd Function Maximum Flow* - 50 gal/min -

Power Train

Brakes - Parking - Spring applied hydraulically released -
Rear Axle - Traction Aid - Optional - Limited slip differential -
Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 - ± 7 degrees -
Rear Axle - Oscillating -
Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 - ± 10.5 degrees -
Note (2) - Offset rims available to meet European roading requirements. -
Note (1) - Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency. -
Brakes - Service - Outboard wet disc -
Note (3) - *Differential front locking axle can be engaged on the go at full torque to 20 km/h (12.4 mph) on the 938M. -
Front Axle - Fixed -
Front Axle - Traction Aid* - Locking differential (standard) -

Sustainability

Recyclability - 94% -
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