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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 a traditional Z-bar with the parallelism and load handling capability of a tool carrier. A high torque, low speed C7.1 ACERT engine works in concert with an intelligent hystat power train to deliver fuel efficiency as standard. Meets Tier 4 Final/Stage V emission standards with an environmentally friendly, Clean Emission Module designed to manage itself so you can concentrate on your work. Experience the new industry benchmark.

Cat Specs
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Engine

Maximum Gross Power
188 HP
Note (1)
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 compon
Note (2)
*Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
649 ft·lbf
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)
173 HP
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
627 ft·lbf
Displacement (Performance Power Mode: Speed Range 1-4)
427 in³
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
642 ft·lbf
Engine Model
Cat C7.1 ACERT**
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)
188 HP
Displacement (Standard Power Mode: Speed Range 1-3*)
427 in³
Rated Net Power - 1,800 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Performance Power Mode: Range 1-4)
186 mhp
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190 mhp
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
176 mhp
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
170 HP
Rated Net Power - 1,600 rpm - ISO 9249 (DIN) at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
172 mhp
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
664 ft·lbf
Note (3)
**The Cat C7.1 ACERT engine meets Tier 4 Final/Stage V off-highway emission standards.
Rated Net Power - 1,800 rpm - SAE J1349 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
183 HP

Weights

Operating Weight
35778 lb

Buckets

Bucket Capacities
2.5-5.0 m3 (3.2-6.5 yd3)
Bucket Capacities - General Purpose
2.5-3.2 m³ (3.2-4.2 yd³)
Bucket Capacities - Light Material
3.1-5.0 m³ (4.0-6.5 yd³)

Sound

Note (1)
European Union Directive “2000/14/EC”

Service Refill Capacities

Hydraulic Tank
23.8 gal (US)
Diesel Exhaust Fluid (DEF) Tank
5 gal (US)
Fuel Tank
51.5 gal (US)
Hydraulic System - Including Tank
44.9 gal (US)
Transmission - Gear Box
2.9 gal (US)
Rear Axles
9.2 gal (US)
Front Axles
9.2 gal (US)
Note
DEF used in Cat SCR systems must meet the requirements outlined in the International Organization for Standardization (ISO) standard 22241-1.
Engine Crankcase
5.3 gal (US)
Cooling System
7.9 gal (US)

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 4
25 mile/h
Forward and Reverse - Range 3
17 mile/h
Forward and Reverse - Range 2
8 mile/h

Dimensions - High Lift

Width over Tires (Loaded)
94% ft

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 equiv

Axles

Front
Fixed; Locking differential (standard)
Rear
Oscillating ±11 degrees; Open differential (standard); Limited slip differential (optional)

Cab

ROPS
ISO 3471:2008
FOPS
ISO 3449:2008 Level II
Note (2)
The declared dynamic operator sound pressure levels per ISO 6396:2008*, when properly installed and maintained, are:
– Standard cab: 68 ±3 dB(A)
– Deluxe cab: 66 ±2 dB(A)
Note (3)
*The measurements were conducted with the cab doors and windows closed and at 70% of the maximum engine cooling fan speed. The sound level may vary at different engine cooling fan speeds.
Note (1)
Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.

Loader Hydraulic System

Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift
5.5 s
Relief Pressure - Tilt Cylinder
4351 psi
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height
1.7 s
Maximum Flow - Implement Pump
50 gal/min
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time
9.7 s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift
6.2 s
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure
4061 psi
Maximum Flow - Implement Pump - 4th Function Maximum Flow*
42 gal/min
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time
10.6 s
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure
4351 psi
Maximum Working Pressure - Implement Pump
4061 psi
Note (1)
*3rd and 4th function flow is fully adjustable from 20% to 100% of maximum flow through the secondary display, when equipped.
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level
2.7 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height
1.5 s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level
2.7 s

Tires

Other Choices Include
20.5 R25, radial (L-2); 20.5 R25, radial (L-5); 20.5-25 12PR (L-2); 20.5-25 12PR (L-3); 20.5-25 16PR (L-5); 23.5 R25, radial (L-3); 650/65 R25 radial (L-3); Skidder/Agriculture; Solid Tires
Note (2)
In certain applications, the loader’s productive capabilities may exceed the tire’s tonnes-km/h (ton-mph) capabilities.
Standard Size
20.5 R25, radial (L-3)
Note (3)
Caterpillar recommends that you consult a tire supplier to evaluate all conditions before selecting a tire model.
Note (1)
Other tire choices are available. Contact your Cat dealer for details.

Steering

Maximum Flow - Steering Pump
34 gal/min
Maximum Working Pressure - Steering Pump
3500 psi
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left
3.3 turns
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed
2.3 s
Steering Articulation Angle - Each Direction
40°
Maximum Steering Torque - 40° (Full Turn)
31398 ft·lbf
Maximum Steering Torque - 0° (Straight Machine)
42506 ft·lbf