Eaton Cummins Endurant HD V Transmission

Quick Facts

  • Manufacturer: Eaton Cummins Automated Transmission Technologies
  • Transmission Type: Heavy-Duty Vocational Automated Manual Transmission
  • Transmission Family: Endurant HD
  • Primary Configuration: 12-Speed Overdrive
  • Forward Speeds: 12
  • Reverse Gears: One or Two depending on configuration
  • Maximum Engine Torque: Up to 1,700 lb-ft
  • Available Model Ratings: 1,450 and 1,650 lb-ft
  • Maximum Gross Combination Weight: 70,000 pounds
  • Overall Ratio: 18.85:1
  • First-Gear Ratio: 14.43:1
  • Top-Gear Ratio: 0.77:1 Overdrive
  • Clutch Type: Maintenance-Free Extreme Duty Diaphragm-Spring Clutch
  • Clutch Control: Electronic Clutch Actuator
  • Clutch Pedal: No
  • PTO Openings: Standard 8-Bolt Bottom and 4-Bolt Rear Openings
  • Combined PTO Capacity: Maximum 95 horsepower and 385 lb-ft of torque
  • PTO Speed: 137 percent of engine speed
  • Housing: Aluminum
  • Approximate Weight: 665 pounds
  • Approximate Length: 37.9 inches
  • Lubricant Capacity: 16 pints
  • Recommended Lubricant: Eaton PS-386
  • Lubricant Change Interval: Up to 250,000 miles
  • Transmission Cooling: Cooler-Less Design
  • Common Applications: Construction Trucks, Tankers, Block Trucks, Stake Trucks, Refuse Roll-Offs, Mobile Cranes, Recovery Trucks, and Other Vocational Vehicles
  • Production Status: Active Production

Overview

The Eaton Cummins Endurant HD V is a 12-speed automated manual transmission designed specifically for vocational commercial trucks.

It expands the Endurant HD family beyond primarily highway-oriented applications by adding an Extreme Duty clutch, off-highway programming, dual PTO provisions, Rock Free mode, and other features intended for construction sites, unpaved roads, changing terrain, and hydraulically powered equipment.

The Endurant HD V is designed for engines producing up to 1,700 lb-ft of torque and vehicles with a maximum gross combination weight rating of 70,000 pounds.

It uses the same lightweight twin-countershaft architecture that helps distinguish the Endurant family. An aluminum housing, precision lubrication system, cooler-less design, electronic clutch actuator, and integrated transmission controls help reduce weight and maintenance requirements.

The HD V is positioned below the heavier Endurant XD and XD Pro families. It is designed for vocational trucks that need more off-highway capability than a standard Endurant HD but do not require the higher gross combination weight ratings of the XD models.

Key Characteristics

The Endurant HD V uses 12 forward gears with a 14.43:1 first-gear ratio and a 0.77:1 overdrive top gear.

Its 18.85:1 overall ratio spread provides low-speed startability while retaining an overdrive ratio for efficient road travel.

The Extreme Duty clutch is designed to improve launch performance and low-speed maneuvering in vocational applications.

Rock Free mode helps the driver move a truck that is stuck in mud, sand, snow, or loose soil by allowing controlled directional changes.

An Off-Highway Performance Goal adjusts shift points and clutch calibration for changing ground conditions. The programming generally emphasizes controlled operation and fewer unnecessary shifts on difficult terrain.

Secondary Configuration mode lets the driver switch between two performance settings. A truck can therefore be programmed differently for loaded and unloaded operation, highway and job-site driving, or firm and soft ground conditions.

Standard 8-bolt bottom and 4-bolt rear PTO openings allow the transmission to power vocational equipment such as hydraulic pumps, hoists, cranes, roll-off systems, recovery equipment, and product-handling systems.

How the Transmission Works

The Endurant HD V uses a twin-countershaft mechanical geartrain controlled by electronics, shift actuators, and an electronically operated clutch.

When the driver selects drive, the transmission controller evaluates vehicle weight, road grade, engine torque, throttle position, selected performance goal, and other operating information.

The controller chooses an appropriate starting gear and commands the electronic clutch actuator to engage the clutch.

As the vehicle accelerates, the transmission communicates with the engine control module through the vehicle data network.

During a shift, engine torque is reduced so the transmission can disengage the current gear. The shift mechanism selects the next ratio, and the electronic clutch and engine controls coordinate the return of torque.

Load-Based Shifting and Smart Gear Selection allow the transmission to skip unnecessary gears when conditions permit. When the vehicle is heavily loaded or operating on a grade, the transmission can use lower gears and smaller progression steps.

Hill Start Aid uses the truck’s foundation brakes to help prevent unintended rollback or forward movement during a launch on a grade.

Urge to Move allows the truck to begin inching when the service brake is released, creating behavior similar to a conventional automatic transmission.

Creep Mode provides controlled low-speed movement with the clutch locked at engine idle. The driver can select different gears to adjust vehicle speed.

When Off-Highway Performance is selected, the transmission changes its shift and clutch strategy for rough or changing terrain.

Rock Free mode assists the driver in moving between forward and reverse to help free the vehicle from loose ground. It must be used according to Eaton Cummins instructions to avoid excessive clutch or driveline stress.

Common Specifications

Transmission Type

The Endurant HD V is a two-pedal automated manual transmission.

It uses a dry clutch and mechanical gears rather than the torque converter and planetary gearsets used by a conventional automatic transmission.

Model Configurations

Two published model designations include:

  • EHD-14F112C-V — 1,450 lb-ft maximum engine torque
  • EHD-16F112C-V — 1,650 lb-ft maximum engine torque

The Endurant HD V platform is designed for approved engine applications up to 1,700 lb-ft.

The complete model and truck manufacturer’s application approval must be checked before installation.

Forward Speeds

The transmission provides 12 forward speeds.

The ratios are arranged in consistent steps to support smooth acceleration, load-based shifting, and overdrive highway operation.

Reverse Gears

The Endurant HD V provides one or two reverse gears depending on vehicle configuration and programming.

Published reverse ratios are:

  • Reverse 1 — 16.92:1
  • Reverse 2 — 12.95:1

The availability of the second reverse ratio must be confirmed for the specific truck.

Forward Gear Ratios

  • First Gear — 14.43:1
  • Second Gear — 11.05:1
  • Third Gear — 8.44:1
  • Fourth Gear — 6.46:1
  • Fifth Gear — 4.95:1
  • Sixth Gear — 3.79:1
  • Seventh Gear — 2.91:1
  • Eighth Gear — 2.23:1
  • Ninth Gear — 1.70:1
  • Tenth Gear — 1.30:1
  • Eleventh Gear — 1.00:1
  • Twelfth Gear — 0.77:1 Overdrive

Overall Ratio

The overall ratio spread is 18.85:1.

This provides a relatively deep starting ratio while maintaining an overdrive top gear for road travel.

Maximum Engine Torque

The transmission family is designed for engines producing up to 1,700 lb-ft.

Individual transmission models carry lower published ratings and must not be operated above their approved capacity.

Maximum Gross Combination Weight

The Endurant HD V has a maximum gross combination weight rating of 70,000 pounds.

Applications exceeding this limit generally require consideration of the Endurant XD, Endurant XD Pro, UltraShift PLUS vocational models, or another heavier transmission.

Extreme Duty Clutch

The HD V uses a maintenance-free Extreme Duty diaphragm-spring clutch.

The clutch is designed to improve low-speed control, launch performance, and durability in vocational conditions.

An electronic clutch actuator controls engagement and disengagement.

Transmission Controls

The transmission includes electronic controls for:

  • Starting-gear selection
  • Clutch engagement
  • Upshifts and downshifts
  • Engine-torque coordination
  • Hill Start Aid
  • Rock Free mode
  • Creep Mode
  • Urge to Move
  • Auto Neutral
  • Engine overspeed protection
  • Enhanced engine braking
  • Load-Based Shifting
  • Predictive Shifting
  • Performance Goals

Performance Goals

Performance Goals combine shift points and clutch calibrations into selectable operating strategies.

Secondary Configuration mode allows two Performance Goals to be programmed for different operating conditions.

PTO Openings

The Endurant HD V provides:

  • Standard 8-bolt bottom PTO opening
  • Standard 4-bolt rear PTO opening

The transmission does not provide a 6-bolt PTO opening or through-shaft PTO arrangement.

PTO Capacity

The two PTO openings provide a combined maximum capacity of:

  • 95 horsepower
  • 385 lb-ft of torque

PTO speed is approximately 137 percent of engine speed.

The total output of all simultaneously operated PTO equipment must remain within the combined limit.

Lubrication System

The Precision Lubrication System delivers lubricant directly to gears and bearings where and when it is needed.

The transmission uses 16 pints, or approximately 7.57 liters, of Eaton PS-386 lubricant.

Lubricant Change Interval

The published lubricant change interval is up to 250,000 miles.

Actual maintenance requirements can be affected by operating hours, PTO use, severe terrain, contamination, temperature, and vocation.

Cooling System

The Endurant HD V uses a cooler-less design.

Eliminating an external transmission-fluid cooler reduces hoses, fittings, leak points, maintenance requirements, and installation complexity.

Fluid Monitoring

Transmission-fluid temperature and pressure sensors can alert the driver or fleet before low pressure or excessive temperature causes serious damage.

Dimensions

Published transmission length is approximately 37.9 inches.

Installation clearance must also account for the clutch housing, output yoke, PTOs, pumps, wiring, air lines, mounts, and driveshaft.

Weight

Published transmission weight is approximately 665 pounds.

The completed installed system may weigh more after adding lubricant, PTO equipment, hydraulic pumps, mounting hardware, and driveline components.

Remote Diagnostics

Endurant HD V supports Eaton IntelliConnect remote diagnostics when properly equipped and enrolled.

The system can monitor fault codes and help fleets identify developing problems before they result in extended downtime.

Common Applications

  • Construction trucks
  • Refuse roll-off trucks
  • Mobile crane trucks
  • Wrecker and recovery trucks
  • Tanker trucks
  • Block-delivery trucks
  • Stake trucks
  • Building-material trucks
  • Dump trucks within approved ratings
  • Utility vehicles
  • Municipal trucks
  • Agricultural service vehicles
  • Hydraulically powered vocational trucks
  • Mixed on- and off-highway operations
  • Job-site vehicles operating on loose ground

Truck and Engine Compatibility

The Endurant HD V is intended for vocational trucks using approved engine and drivetrain combinations. Eaton Cummins identifies 9-liter, 11-liter, and Cummins X10-class engines as primary pairings.

Relevant vocational truck platforms that may support this type of transmission, subject to truck-manufacturer availability and application approval, include:

The Cummins X10 is also a principal intended engine family, but its Truck Equipment Atlas profile has not yet been published.

Cummins B6.7-powered trucks generally fall below the intended torque and vehicle class of many HD V applications, while Cummins X15 applications may exceed the transmission’s intended torque or weight range. Every pairing must be approved individually.

The transmission should not be assumed compatible with every engine or truck listed above. Final compatibility depends on:

  • Engine torque rating
  • Engine software
  • Truck-manufacturer availability
  • Transmission model
  • Gross combination weight
  • Rear-axle ratio
  • Tire size
  • PTO requirements
  • Vehicle vocation
  • Frame and driveshaft configuration
  • Electronic communication

Advantages

  • Designed specifically for vocational applications
  • 12-speed automated operation
  • No clutch pedal
  • Maximum 1,700 lb-ft engine capability
  • 70,000-pound maximum GCW
  • Deep 14.43 first gear
  • Overdrive top gear
  • Extreme Duty clutch
  • Improved low-speed maneuverability
  • Hill Start Aid
  • Rock Free mode
  • Off-Highway Performance Goal
  • Selectable Secondary Configuration
  • Urge to Move
  • Creep Mode
  • Load-Based Shifting
  • Enhanced engine-brake operation
  • Dual PTO openings
  • Maximum combined PTO output of 95 horsepower
  • Precision Lubrication System
  • Cooler-less design
  • Fluid-pressure and temperature monitoring
  • IntelliConnect remote-diagnostic capability
  • Lightweight aluminum housing

Limitations or Considerations

  • Limited to a 70,000-pound maximum GCW
  • Not intended for extreme heavy-haul applications
  • Maximum engine torque is 1,700 lb-ft
  • Published models may have lower individual torque ratings
  • PTO output is lower than Endurant XD and XD Pro
  • No 6-bolt PTO opening
  • No through-shaft PTO configuration
  • Electronic controls require diagnostic equipment
  • Clutch and actuator service require correct calibration
  • Low-speed operation still generates clutch heat
  • Rock Free mode must be used correctly
  • Off-highway use can shorten maintenance intervals
  • Not available in an 18-speed configuration
  • Fewer reverse options than Endurant XD Pro
  • Truck and engine availability depends on OEM approval
  • A transmission replacement may require software programming
  • Newer product with less long-term field history than older Eaton vocational transmissions

Driver and Operator Experience

The Endurant HD V is designed to provide easier operation than a manual vocational transmission.

The driver selects drive or reverse and controls the truck with the accelerator and brake pedals. The electronic clutch actuator manages clutch engagement.

Hill Start Aid holds the foundation brakes when the truck is stopped on a qualifying grade. This gives the driver time to move from the brake to the accelerator without unintended rollback.

Urge to Move can make yard and job-site maneuvering feel more like a conventional automatic transmission. The truck begins inching when the brake is released.

Creep Mode provides low-speed movement with the clutch locked at engine idle. Different gears can be selected to adjust the creep speed.

Rock Free mode can assist when the truck becomes stuck in mud, sand, snow, or loose ground. Drivers should follow the approved operating procedure and stop if the clutch temperature warning activates.

The Off-Highway Performance Goal changes the transmission’s behavior for unpaved or changing terrain. It can reduce unnecessary shifting and maintain a more useful gear.

Secondary Configuration allows the driver to change between two programmed performance strategies, such as loaded and empty or road and job-site operation.

Maintenance and Ownership Notes

The Endurant HD V uses Eaton PS-386 transmission lubricant.

The published lubricant capacity is 16 pints, and the normal maximum change interval is 250,000 miles.

Vocational operations accumulate substantial engine and PTO hours even when road mileage is low. Maintenance planning should therefore consider hours, terrain, dust, temperature, PTO operation, and contamination.

The transmission-fluid pressure and temperature sensors should not be ignored. A warning may indicate low lubricant, a leak, restricted flow, excessive heat, sensor failure, or another developing problem.

The cooler-less design eliminates the external cooler, hoses, and fittings used by many older transmissions.

The Extreme Duty clutch is described as maintenance-free, but clutch wear, heat events, actuator operation, and clutch-life information still require monitoring.

Electrical connectors, grounds, wiring harnesses, speed sensors, the electronic clutch actuator, and the transmission control module should be protected from water, debris, impact, and improper repairs.

PTO fasteners, hydraulic pumps, seals, wiring, controls, and driven equipment require regular inspection.

Software updates, clutch calibrations, fault-code diagnostics, and service routines require compatible Eaton diagnostic equipment.

Common Transmission Problems

Transmission Will Not Engage a Gear

Possible causes include low voltage, an active fault, clutch-actuator problems, speed-sensor failure, low air pressure, wiring damage, or communication failure.

Electronic Clutch Actuator Faults

A failed actuator, damaged wiring, incorrect calibration, clutch wear, or excessive heat can interfere with starting and shifting.

Clutch Overheating

Repeated creeping, holding the truck on a grade with the accelerator, excessive rocking, overloaded operation, or prolonged backing can generate excessive clutch heat.

PTO Problems

PTO faults may result from incorrect installation, excessive combined output, programming problems, failed interlocks, hydraulic overload, lubrication issues, or damaged PTO gearing.

Transmission-Fluid Pressure Warnings

A pressure warning can indicate low lubricant, leakage, incorrect lubricant, internal flow problems, sensor faults, or transmission damage.

Transmission Overheating

Excessive weight, severe terrain, repeated low-speed operation, clutch slipping, high PTO loads, or insufficient lubricant can increase transmission temperature.

Shift-Quality Problems

Harsh, delayed, or unnecessary shifts can result from sensor faults, incorrect programming, software issues, engine communication problems, or an unsuitable Performance Goal.

Vehicle Data-Network Faults

The engine, transmission, brakes, and other controllers must communicate properly. Wiring, connector, ground, or module failures can disrupt transmission operation.

Gear-Position or Speed-Sensor Faults

The controller relies on accurate gear and shaft-speed information. Incorrect readings may cause missed shifts, neutral conditions, warning messages, or limited operation.

Rock Free Does Not Operate

The feature may be unavailable because of an active fault, excessive clutch temperature, incorrect vehicle state, programming, or improper operating procedure.

Buying Considerations

  • Confirm that the transmission is the Endurant HD V rather than the standard Endurant HD.
  • Verify the complete model designation.
  • Confirm the engine’s maximum torque.
  • Verify the truck’s maximum operating GCW.
  • Determine whether one or two reverse gears are enabled.
  • Confirm both Performance Goal configurations.
  • Check Extreme Duty clutch condition.
  • Review clutch-life information.
  • Scan for active and inactive fault codes.
  • Verify transmission software and calibration.
  • Test Hill Start Aid.
  • Test Urge to Move and Creep Mode.
  • Confirm Rock Free operation.
  • Inspect both PTO openings.
  • Calculate the combined PTO horsepower and torque requirements.
  • Confirm hydraulic-pump compatibility.
  • Inspect wiring, connectors, grounds, and sensors.
  • Review lubricant service records.
  • Verify that Eaton PS-386 lubricant was used.
  • Confirm truck-manufacturer application approval.
  • Check warranty status and service support.

Variants and Configurations

  • EHD-14F112C-V — 1,450 lb-ft
  • EHD-16F112C-V — 1,650 lb-ft
  • One-Reverse-Gear Configuration
  • Two-Reverse-Gear Configuration
  • 8-Bolt Bottom PTO Configuration
  • Dual-PTO Configuration
  • Construction Configuration
  • Refuse Roll-Off Configuration
  • Mobile-Crane Configuration
  • Tanker Configuration
  • Block-Truck Configuration
  • Stake-Truck Configuration
  • Wrecker and Recovery Configuration
  • Off-Highway Performance Goal
  • Secondary Performance Configuration

Comparison to Similar Equipment

Compared with the standard Eaton Cummins Endurant HD, the HD V adds an Extreme Duty clutch, Rock Free mode, Off-Highway Performance, and vocational programming. Standard Endurant HD supports higher maximum GCW ratings in approved on-highway applications.

Compared with Eaton UltraShift PLUS vocational models, the Endurant HD V uses a newer and lighter transmission architecture. UltraShift PLUS offers several specialized vocational configurations and can support higher weight classes in certain models.

Compared with the Eaton Cummins Endurant XD, the HD V is lighter and better suited to vocational trucks operating at or below 70,000 pounds. Endurant XD supports gross combination weights up to 166,000 pounds.

Compared with the Eaton Cummins Endurant XD Pro, the HD V has lower torque, weight, PTO, and reverse capability. XD Pro is designed for severe heavy-haul, logging, oilfield, and other demanding applications.

Compared with the PACCAR TX-12 Pro, the Endurant HD V has very similar vocational goals, including a 70,000-pound GCW limit, 1,700 lb-ft engine capability, dual PTO provisions, an Extreme Duty clutch, Rock Free mode, and off-highway programming. Availability depends on the truck manufacturer and drivetrain package.

Compared with an Allison automatic transmission, the Endurant HD V uses a dry clutch and mechanical geartrain. Allison’s torque converter can provide smoother continuous low-speed power, while the Endurant HD V offers lightweight construction and direct mechanical efficiency.

Best Fit For

  • Construction fleets
  • Refuse roll-off operations
  • Mobile-crane trucks
  • Wrecker and recovery fleets
  • Tanker operations
  • Block and building-material delivery
  • Stake-truck operations
  • Municipal fleets
  • Utility contractors
  • Mixed road and job-site operations
  • Trucks requiring dual PTO capability
  • Applications under 70,000 pounds GCW
  • Fleets using 9-liter, 11-liter, or Cummins X10-class engines
  • Drivers needing automated operation and low-speed control

Related Truck Types

Related Truck Models

Related Engines

Related Transmission Types

Related Equipment Systems

Related Guides

Understand the operating principles in How Commercial Truck Transmissions Work, compare drivetrain designs in Manual vs Automated Manual vs Automatic Transmissions, and evaluate gearing, application, and compatibility in How to Choose a Commercial Truck Transmission.

Regulatory and Compliance Notes

The Endurant HD V must be installed in a truck and engine combination approved by the vehicle manufacturer and Eaton Cummins.

The engine’s maximum torque must remain within the transmission model’s rating.

The completed vehicle must not exceed the transmission’s 70,000-pound maximum gross combination weight rating.

PTO equipment must remain within the transmission’s combined 95-horsepower and 385-lb-ft limits.

All PTOs operating simultaneously must be included when calculating combined load.

Truck programming, axle ratio, tire size, brake controls, engine communication, and transmission calibration must remain compatible.

Changes to software, sensors, controllers, tires, or axle gearing can affect shifting, Hill Start Aid, speedometer accuracy, engine braking, and emissions-system communication.

Rock Free mode does not replace safe vehicle-recovery procedures. Towing and recovery points must be rated for the load.

Real World Operating Notes

The Endurant HD V is designed for fleets that divide their time between public roads and job sites.

Its 14.43 first gear supports strong launch performance, while the 0.77 overdrive top gear allows efficient road travel.

The Extreme Duty clutch improves low-speed capability, but drivers should still avoid prolonged clutch slipping.

Rock Free mode can help in loose terrain, but it should not be repeatedly used after a clutch-temperature warning appears.

Secondary Configuration is most useful when the truck regularly changes between distinct operating conditions, such as loaded and empty or highway and job-site operation.

Dual PTO openings allow multiple hydraulic systems to be powered, but the total demand must remain within the combined transmission rating.

The 70,000-pound GCW limit makes the HD V suitable for many vocational vehicles, but not for extreme heavy-haul, large logging, or severe oilfield combinations.

Frequently Asked Questions

What is the Eaton Cummins Endurant HD V?

It is a 12-speed automated manual transmission designed specifically for vocational trucks operating at gross combination weights up to 70,000 pounds.

What does the V mean?

The V identifies the vocational version of the Endurant HD transmission.

How much torque can the Endurant HD V handle?

The platform is designed for approved engine applications up to 1,700 lb-ft. Published models include 1,450- and 1,650-lb-ft ratings.

How many gears does it have?

It has 12 forward gears and one or two reverse gears depending on configuration.

What is the maximum GCW?

The maximum gross combination weight rating is 70,000 pounds.

Does it have a clutch pedal?

No. An electronic clutch actuator controls the Extreme Duty dry clutch.

What is Rock Free mode?

Rock Free helps the driver alternate controlled vehicle movement to free the truck from mud, sand, snow, or loose soil.

Does it support PTO equipment?

Yes. It has standard 8-bolt bottom and 4-bolt rear PTO openings with a combined maximum capacity of 95 horsepower and 385 lb-ft.

What lubricant does it use?

It uses Eaton PS-386 transmission lubricant with a published capacity of 16 pints.

How often is the lubricant changed?

The published interval is up to 250,000 miles, although severe vocational operation may require additional inspection or adjusted maintenance planning.

How is it different from Endurant XD?

Endurant XD supports heavier applications up to 166,000 pounds GCW. The HD V is lighter and designed for vocational trucks operating at or below 70,000 pounds.

Availability and Where to Find

The Endurant HD V is available through participating commercial truck manufacturers, vocational truck dealers, Eaton Cummins distributors, truck-equipment upfitters, and Roadranger service locations.

Transmission availability depends on truck manufacturer, engine selection, model year, drivetrain configuration, vehicle vocation, and application approval.

Buyers should work with the truck dealer, body builder, PTO supplier, and hydraulic-equipment provider before finalizing the specification.

Current specifications, service literature, application information, and availability can be confirmed through the official Eaton Cummins Endurant HD V page.

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