938M Wheel Loader

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938M Wheel Loader

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The Cat 938M Small Wheel Loader sets the standard for productivity, fuel efficiency and operator comfort. The improved optimized Z-bar loader linkage delivers the quick loading performance of ...
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Engine

Maximum Gross Power
188HP
Bore
4in
Stroke
5in
Displacement
427in³
Note (4)
Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
Note (3)
No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
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.
Note (1)
* Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Emissions
Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Engine Model
Cat® C7.1 ACERT™
Rated Net Power
182HP
Maximum Rated Gross Power - ISO 14396
188HP
Maximum Rated Gross Power - ISO 14396 (DIN)
190HP
Maximum Rated Gross Power - Maximum Engine Speed (Performance Power Mode: Range 1-4)
1800r/min
Maximum Rated Gross Power - ISO 14396 (Performance Power Mode: Range 1-4)
188HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190HP
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
182HP
Rated Net Power - 1,800 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184HP
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186HP
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
648lb/ft
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
621lb/ft
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Performance Power Mode: Range 1-4)
628lb/ft
Maximum Rated Gross Power - Maximum Engine Speed (Standard Power Mode: Range 1-3*)
1600r/min
Maximum Rated Gross Power - ISO 14396 (Standard Power Mode: Range 1-3*)
173HP
Maximum Rated Gross Power - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
175HP
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
168HP
Rated Net Power - 1,600 rpm - ISO 9249 (1977)/EEC 80/1269 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
169HP
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
171HP
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
648lb/ft
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
621lb/ft
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
628lb/ft

Weights

Operating Weight
36216lb

Buckets

Bucket Capacities
2.5-5.0 m3 (3.3-6.5 yd3)

Cab

ROPS
ISO 3471: 2008
FOPS
ISO 3449: 2005 LEVEL II
Note (2)
* 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.
Note (1)
Declared sound levels per ISO 6396:2008* while in Performance Power Mode: – Standard cab: 68 ±3 dB(A) and Deluxe cab

Transmission

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
8mile/h
Forward and Reverse - Range 3
17mile/h
Forward and Reverse - Range 4
25mile/h

Steering

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

Service Refill Capacities

Transmission - Gear Box
2.9gal (US)
Hydraulic Tank
23.8gal (US)
Hydraulic System - Including Tank
44.9gal (US)
Engine Crankcase
5.3gal (US)
Fuel Tank
51.5gal (US)
Diesel Exhaust Fluid (DEF) Tank
5gal (US)
Cooling System
8.5gal (US)
Front Axles
9.2gal (US)
Rear Axles
9.2gal (US)

Power Train

Rear Axle
Oscillating
Front Axle
Fixed
Brakes - Service
Outboard wet disc
Brakes - Parking
Spring applied hydraulically released
Front Axle - Traction Aid - Standard
Locking differential
Rear Axle - Oscillation Angle by Tire Size - 20.5 R25, 550/65, 600/65, 650/65
± 10.5 degrees
Rear Axle - Oscillation Angle by Tire Size - 23.5 R25
± 7 degrees
Rear Axle - Oscillation Angle by Tire Size - Solid Tires, 750/65, 620/65, Skidder
± 7 degrees
Rear Axle - Traction Aid - Optional
Limited slip differential
Note (1)
Power train is governed by the Caterpillar exclusive Intelligent Power Management system to deliver peak performance and efficiency.
Note (2)
Differential front locking axle can be engaged on the go at full torque up to 20 km/h (12.4 mph) on the 938M.
Note (3)
Offset rims available to meet European roading requirements.

Operating Specifications

Full Turn Tip Load
22107lb

Loader Hydraulic System

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

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 1.9 kg of refrigerant which has a CO2 equivalent of 2.717 metric tonnes.

Standard Equipment:

Optional Equipment:

    Optional Equipment
    • Antifreeze/coolant, extended-life
    • Auto lube, integrated in secondary display
    • Auxiliary flow, third and fourth function
    • Axles, differential, limited slip, rear
    • Beacon light, strobe
    • Cab, deluxe (standard in Europe):
      – Automatic blower control
      – Electrically adjustable heated mirrors (2)
      – LED interior lighting
      – Touchscreen secondary display
    • Ride control adjustable speed activation
    • Preventative maintenance reminders
    • Integrated help function (26 languages)
    • Sunscreen, front and rear
    • Camera, rearview (standard in Europe)
    • Cold start package:
      – Ether starting aid, block heater and additional batteries, 1,000 CCA (4 total)
    • Counterweight, (heavy and logger)
    • Coupler, (Fusion and ISO 23727)
    • Debris packages (low, medium, high)
    • Fenders (extended cover and full coverage)
    • Guards
      – Power train, (lower, side, driveshaft and crankcase)
      – Windshield and lights
      – Cylinders, tilt and steering
      – Rear radiator, heavy duty
    • Linkage, high lift
    • Lights, auxiliary, halogen or LED with engine compartment lights
    • Payload Technology
      – Cat Production Measurement (CPM)
      – CPM Printer
    • Rear Object Detection
    • Radio packages:
      – Radio ready with Bluetooth
      – Radio, AM/FM with Bluetooth and clock
      – Radio, AM/FM with CD player deluxe, weatherband, Bluetooth and clock
    • Seats:
      – Deluxe seat – fully adjustable fabric air suspension seat with mid seat backrest
      – Premium seat – fully adjustable leather and fabric air suspension with high backrest and air lumbar support. Heated and cooled bottom cushion and backrest.
    • Steering:
      – Dual mode and Secondary
    • Tires:
      – Bias ply, 17.5, 20.5-25, Skidder
      – Radial, 17.5, 20.5, 23.5, 550/65, 600/65, 650/65 R25
      – Solid tires, 620/65, 750/65 Agriculture
    • Tire Pressure Monitoring (TPM)
    • Toolbox
    • Work tools