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988 Wheel Loader
938M Aggregate Handler Small Wheel Loader
938M Waste Handler Small Wheel Loader

Engine

Engine Power - ISO 14396:2002 580 hp - 188 hp
Engine Model Cat® C18 Cat® C7.1 Cat® C7.1
Rated Speed 1700/rpm - -
Peak Power Speed 1500/rpm - -
Gross Power - SAE J1995:2014 588 hp - -
Net Power - SAE J1349:2011 538 hp - -
Bore 5.7 in 4 in 4 in
Stroke 7.2 in 5 in 5 in
Displacement 1105 in³ 427 in³ 427 in³
Peak Torque - 1,200 rpm 2104 lbf·ft - -
Torque Rise 58 % - -
Note (1) Three engine emission 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. 3. Meets China Nonroad Stage IV emissio *Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology. *Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
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. 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. 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 - 188 hp 188 hp
Maximum Gross Power - ISO 14396 (Performance Power Mode: Range 1-4) - 188 hp 188 hp
Maximum Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4) - 1800 r/min 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 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. No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
Maximum Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*) - 173 hp 173 hp
Emissions - The Cat C7.1 engine meets U.S. EPA Tier 4 Final, EU Stage V and Korea Tier 4 Final emission standards. The Cat C7.1 engine meets U.S. EPA Tier 4 Final/EU Stage V and Korea Tier 4 Final emission standards.
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*) - 627 ft·lbf 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 186 hp
Net Power - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4) - 184 hp 184 hp
Maximum Gross Power - ISO 14396 (metric) (Performance Power Mode: Range 1-4) - 190 hp 190 hp
Net Power - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4) - 183 hp 183 hp
Net Power - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*) - 170 hp 170 hp
Net Power (Standard Power Mode: Range 1-3*) - 1600 r/min 1600 r/min
Maximum Gross Power - ISO 14396 (metric) (Standard Power Mode: Range 1-3*) - 176 hp 176 hp
Net Power (Performance Power Mode: Range 1-4) - 1800 r/min 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 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 170 hp
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4) - 664 ft·lbf 664 ft·lbf
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*) - 642 ft·lbf 642 ft·lbf
Maximum Net Torque - SAE J1349 (Performance [HP+] Power Mode: Range 1-4) - - 649 ft·lbf
Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4) - - 650 ft·lbf
Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*) - - 628 ft·lbf
Engine Power - ISO 14396 - Metric - - 190 hp

Operating Specifications

Operating Weight 112574 lb - -
Bucket Capacity Range 4.7-13 m3 (6.2-17 yd3) - -
Rated Payload - Quarry Face 12.5 t - -
Rated Payload - Loose Material 16 t - -
Cat Truck Match - Standard 770 - 772 - -
Cat Truck Match - High Lift 773 - 775 - -
Full Turn Tip Load (2) - 10 662 kg (23,504 lb)^ 10 741 kg (23,679 lb)^
Full Turn Tip Load (1) - 10 551 kg (23,260 lb)** 9795 kg (21,594 lb)**
Note (2) - ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. ^Dimensions listed are for a machine configured with standard counterweights, waste guarding, rear waste gate, 80 kg (176 lb) operator, and new solid tires.
Note (1) - **Aggregate Handler machine equipped with full counterweight and optional guards. **Dimensions listed are for a machine configured with optional counterweights, waste guarding, 80 kg (176 lb) operator, and Michelin 20.5 R25 XMINE D2 tires.

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 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). *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 touch screen 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) 1-13 km/h (0.6-8 mph)
Forward and Reverse - Range 2 - 8 mile/h 8 mile/h
Forward and Reverse - Range 3 - 17 mile/h 17 mile/h

Hydraulic System - Lift/Tilt

Lift/Tilt System - Circuit EH- Positive Flow Control, Flow Sharing - -
Lift/Tilt System - Pump 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 266 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 at 1,400-1,600 rpm 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 or R1234yf. See the label or instruction manual for identification of the gas. • If equipped with R134a (Global Warming Potential = 1430), the system 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. The air conditioning system on this machine contains the flourinated 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 - -

Sound Performance - Tier 4 Final / Stage V

Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
Machine Sound Power Level (ISO 6395:2008) 111 dB(A) - -
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A) - -
Machine Sound Power Level (ISO 6395:2008)** 109 dB(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. - -

Sound Performance - Tier 3 / Stage IIIA

Operator Sound Pressure Level (ISO 6396:2008) 73 dB(A) - -
Machine Sound Power Level (ISO 6395:2008) 112 dB(A) - -
Operator Sound Pressure Level (ISO 6396:2008)* 72 dB(A) - -
Machine Sound Power Level (ISO 6395:2008)** 110 dB(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. - -

Service Refill Capacities

Fuel Tank 188 gal (US) 51.5 gal (US) 51.5 gal (US)
Cooling System 31.7 gal (US) 8.5 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 (For Tier 4 Final/Stage V Only) 8.7 gal (US) - -
Transmission 24.3 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) - -
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 - -
Rear Axles - 9.2 gal (US) -
Hydraulic System - Including Tank - 44.9 gal (US) 44.9 gal (US)
Hydraulic Tank - 23.8 gal (US) 23.8 gal (US)
Diesel Exhaust Fluid (DEF) Tank - 5 gal (US) 5 gal (US)
Engine Crankcase - 5.3 gal (US) 5.3 gal (US)
Front Axles - 9.2 gal (US) -
Transmission - Gear Box - 2.9 gal (US) 2.9 gal (US)
Axles - Rear - - 9.2 gal (US)
Axles - Front - - 9.2 gal (US)

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 - -

Weights

Operating Weight - 36839 lb 41794 lb
Note (2) - ^Aggregate Handler equipped with full counterweight, optional guards, roading fenders, cold start package, and 23.5R25 tires. ^Dimensions listed are for a machine configured with standard counterweights, waste guarding, rear waste gate, 80 kg (176 lb) operator, and new solid tires.
Note (1) - **Aggregate Handler machine equipped with full counterweight and optional guards. **Dimensions listed are for a machine configured with optional counterweights, waste guarding, 80 kg (176 lb) operator, and Michelin 20.5 R25 XMINE D2 tires.
Operating Weight (2) - 16 710 kg (36,839 lb)^ 18 958 kg (41,794 lb)^
Operating Weight (1) - 16 199 kg (35,712 lb)** 17 258 kg (38,046 lb)**

Buckets

Bucket Capacities - 2.9-5.0 m3 (3.8-6.5 yd3) 3.0-5.0 m3 (3.9-6.5 yd3)

Cab

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

Steering

Maximum Flow - Steering Pump - 34 gal/min 34 gal/min
Steering Cycle Times - Full Left to Full Right - Minimum RPM: Pump Flow Limited - 3.1 s 3.1 s
Steering Cycle Times - Full Left to Full Right - Maximum RPM: 90 rpm Steering Wheel Speed - 2.3 s 2.3 s
Steering Cylinder, Double Acting - Bore Diameter - 3.1 in 3.1 in
Steering Cylinder, Double Acting - Rod Diameter - 2 in 2 in
Steering Cylinder, Double Acting - Stroke - 15.7 in 15.7 in
Note (1) - Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders. Steering system uses a dedicated load sensing variable displacement pump with dual double acting cylinders.
Maximum Working Pressure - Steering Pump - 3500 psi 3500 psi
Note (2) - Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). Flow values listed are for a machine running in Performance Power Mode (1,800 rpm).
Maximum Steering Torque - 0° (Straight Machine) - - 42506 ft·lbf
Maximum Steering Torque - 40° (Full Turn) - - 31398 ft·lbf

Loader Hydraulic System

Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure - 4351 psi 4351 psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure - 4061 psi 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. 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 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 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 9.7/10.6 seconds
Tilt Cylinder, Double Acting - Rod Diameter - 3.5 in -
Maximum Flow - Implement Pump - 50 gal/min 50 gal/min
Note (2) - Flow values listed are for a machine running in Performance Power Mode (1,800 rpm). 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 5.5/6.2 seconds
Maximum Flow - Implement Pump - 4th Function Maximum Flow* - 42 gal/min 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. * 3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the touch screen display when equipped.
Lift Cylinder, Double Acting - Stroke - 31.1 in -
Maximum Working Pressure - Implement Pump - 4061 psi 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 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 50 gal/min
Lift Cylinder: Standard Lift Linkage - Stroke - - 31.1 in
Tilt Cylinder: Standard Lift Linkage - Rod Diameter - - 3.5 in
Lift Cylinder: Standard Lift Linkage - Rod Diameter - - 2.6 in
Tilt Cylinder: Standard Lift Linkage - Bore Diameter - - 5.9 in
Lift Cylinder: Standard Lift Linkage - Bore Diameter - - 4.7 in
Tilt Cylinder: Standard Lift Linkage - Stroke - - 21.9 in

Power Train

Brakes - Parking - Spring applied hydraulically released Spring applied hydraulically released
Rear Axle - Traction Aid - Optional - Limited slip differential Limited slip differential
Rear Axle - Oscillation Angle by Tire Size - 23.5 R25 - ± 7 degrees ± 7 degrees
Rear Axle - Oscillating Oscillating
Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65 - ± 10.5 degrees ± 10.5 degrees
Note (2) - Offset rims available to meet European roading requirements. 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. Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Brakes - Service - Outboard wet disc Inboard 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. Differential front locking axle can be engaged on the go at full torque up to 20 km/h (12.4 mph) on the 938M.
Front Axle - Fixed Fixed
Front Axle - Traction Aid* - Locking differential (standard) -
Front Axle - Traction Aid - - Locking differential
Rear Axle - Oscillation Angle by Tire Size - Solid Tires, 750/65, 620/65, Skidder - - ± 7 degrees

Sustainability

Recyclability - 94% 94%
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