Engine
Engine Model
Cat® C7.1 ACERT™
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)
183HP
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)
186mhp
Maximum Gross Torque - ISO 14396 (Performance Power Mode: Range 1-4)
664ft·lbf
Maximum Net Torque - SAE J1349 (Performance Power Mode: Range 1-4)
649ft·lbf
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*)
176HP
Rated Net Power - 1,600 rpm - SAE J1349 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
170HP
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*)
172mhp
Maximum Gross Torque - ISO 14396 (Standard Power Mode: Range 1-3*)
642ft·lbf
Maximum Net Torque - SAE J1349 (Standard Power Mode: Range 1-3*)
627ft·lbf
Maximum Net Torque - ISO 9249 (1977)/EEC 80/1269 (Standard Power Mode: Range 1-3*)
628lb/ft
Emissions
Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
Note
* Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Displacement (Performance Power Mode: Speed Range 1-4)
427in³
Maximum Gross Power
188hp
Note
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
No derating required up to 3000 m (10,000 ft) altitude. Auto derate protects hydraulic and transmission systems.
Note
Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
Maximum Net Torque - ISO 9249:2007 (Standard Power Mode: Range 1-3*)
628ft·lbf
Displacement (Standard Power Mode: Speed Range 1-3*)
427in³
Engine Model
Cat C7.1 ACERT**
Maximum Gross Power
188HP
Emissions
Engine meets U.S. EPA Tier 4 Final/EU Stage IV emission standards.
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 components and fan at specified speed.
Note (2)
*Range 4 power and torque is equal to Performance Mode with Caterpillar Power by Range technology.
Rated Net Power - 1,600 rpm - ISO 9249 at Minimum Fan Speed (Standard Power Mode: Range 1-3*)
170HP
Note (3)
**The Cat C7.1 ACERT engine meets Tier 4 Final/Stage V off-highway emission standards.
Note (4)
Spark arrestor performance as standard – Meets performance requirements of EN 1834-1.2000 (section 6.4.2 Visual Test).
Rated Net Power - 1,800 rpm - ISO 9249 at Minimum Fan Speed (Performance Power Mode: Range 1-4)
184HP
Maximum Net Torque - ISO 9249:2007 (Performance Power Mode: Range 1-4)
650ft·lbf
Maximum Gross Power - 1,600 rpm - ISO 14396 (DIN) (Standard Power Mode: Range 1-3*)
176mhp
Maximum Gross Power - 1,800 rpm - ISO 14396 (Performance Power Mode: Range 1-4)
188HP
Maximum Gross Power - 1,800 rpm - ISO 14396 (DIN) (Performance Power Mode: Range 1-4)
190mhp
Maximum Gross Power - 1,600 rpm - ISO 14396 (Standard Power Mode: Range 1-3*)
173HP
Steering
Steering Cylinder: Double Acting – Bore Diameter
3.1in
Steering Cylinder: Double Acting – Rod Diameter
2in
Steering Cylinder: Double Acting – Stroke
15.7in
Maximum Flow – Steering Pump
34gal/min
Maximum Working Pressure – Steering Pump
3500psi
Maximum Steering Torque – 0° (Straight Machine)
42506lbf-ft
Maximum Steering Torque - 40° (Full Turn)
31398ft·lbf
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).
Maximum Flow - Steering Pump
34gal/min
Maximum Steering Torque - 0° (Straight Machine)
42506ft·lbf
Maximum Working Pressure - Steering Pump
3500psi
Steering Cylinder, Double Acting - Bore Diameter
3.1in
Steering Cylinder, Double Acting - Rod Diameter
2in
Steering Cylinder, Double Acting - Stroke
15.7in
Steering Articulation Angle - Each Direction
40°
Number of Steering Wheel Turns - Full Left to Full Right or Full Right to Full Left
3.3turns
Steering Cycle Times - Full Left to Full Right - At 1,800 rpm: 90 rpm Steering Wheel Speed
2.3s
Loader Hydraulic System
Maximum Flow – Implement Pump
50gal/min
Maximum Flow - Implement Pump - 3rd Function*
50gal/min
Maximum Flow - Implement Pump - 4th Function Maximum Flow*
42gal/min
Maximum Working Pressure – Implement Pump
4061psi
Relief Pressure – Tilt Cylinder
4351psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Maximum Working Pressure
4061psi
Relief Pressure - Tilt Cylinder - 3rd and 4th Function Relief Pressure
4351psi
Lift Cylinder: Double Acting – Bore Diameter
4.7in
Lift Cylinder: Double Acting – Rod Diameter
2.6in
Lift Cylinder: Double Acting – Stroke
31.1in
Tilt Cylinder: Double Acting – Bore Diameter
5.9in
Tilt Cylinder: Double Acting – Rod Diameter
3.5in
Tilt Cylinder: Double Acting – Stroke
21.9in
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).
Lift Cylinder, Double Acting - Bore Diameter
4.7in
Lift Cylinder, Double Acting - Rod Diameter
2.6in
Lift Cylinder, Double Acting - Stroke
31.1in
Maximum Flow - Implement Pump
50gal/min
Maximum Working Pressure - Implement Pump
4061psi
Relief Pressure - Tilt Cylinder
4351psi
Tilt Cylinder, Double Acting - Bore Diameter
5.9in
Tilt Cylinder, Double Acting - Rod Diameter
3.5in
Tilt Cylinder, Double Acting - Stroke
21.9in
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Raise, Ground Level to Maximum Lift
5.5s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Total Cycle Time
9.7s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Total Cycle Time
10.6s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Dump, at Maximum Lift Height
1.7s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Dump, at Maximum Lift Height
1.5s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Raise, Ground Level to Maximum Lift
6.2s
Hydraulic Cycle Time - Performance Mode at 1,800 rpm - Float Down, Maximum Lift to Ground Level
2.7s
Hydraulic Cycle Time - Standard Mode at 1,600 rpm - Float Down, Maximum Lift to Ground Level
2.7s
Maximum Flow - Implement Pump - 3rd Function Maximum Flow*
50gal/min
Transmission
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
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).
Note (cont'd)
Factory default is 7 km/h (4.4 mph).
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).
Cab
FOPS
ISO 3449: 2005 LEVEL II
Note
Declared sound levels per ISO 6396:2008* while in Performance Power Mode: – Standard cab: 68 ±3 dB(A) and Deluxe cab
Note
* 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 3449:2008 Level II
Note (1)
Cab and Rollover Protective Structures (ROPS) are standard in North America and Europe.
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.
Power Train
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
Brakes: Service
Outboard wet disc
Brakes: Park
Spring applied hydraulically released
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.
Brakes - Parking
Spring applied hydraulically released
Brakes - Service
Outboard wet disc