3400811
Gear Cover
Cummins®

DISCONTINUED

Cummins®

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

Introduction

The Cummins 3400811 Gear Cover is a component designed for use in heavy-duty truck engines. It serves to protect the internal components of the transmission system and plays a significant role in maintaining the operational integrity of the truck. Ensuring that this part is in optimal condition can enhance the reliability and efficiency of the vehicle.

Purpose and Function

The primary function of the Cummins 3400811 Gear Cover is to safeguard the internal gears and components of the transmission system from external contaminants such as dirt, debris, and moisture 1. Additionally, it helps in maintaining the lubrication system by containing the lubricants within the transmission, thus ensuring that the moving parts are adequately coated and operate smoothly. This protection is vital for the longevity and performance of the transmission system.

Key Features

The Cummins 3400811 Gear Cover is constructed from durable materials that are resistant to wear and corrosion. Its design includes precise fitting mechanisms to ensure a secure attachment to the transmission housing. The gear cover is also engineered to allow for easy access during maintenance procedures, facilitating efficient servicing and repair when necessary.

Benefits

The use of the Cummins 3400811 Gear Cover offers several advantages. It provides enhanced protection for the transmission components, which can lead to reduced wear and tear. Additionally, by maintaining proper lubrication, it contributes to smoother operation and potentially lowers maintenance requirements. The robust construction of the gear cover also ensures durability, which can result in extended service life for the transmission system.

Installation Process

Installing the Cummins 3400811 Gear Cover involves several steps to ensure a proper fit. First, the transmission system should be cleaned to remove any debris. The gear cover is then aligned with the transmission housing, and the bolts are tightened in a specific sequence to ensure even pressure distribution. It is important to use the correct tools and follow the manufacturer’s guidelines to achieve a secure installation 2.

Maintenance Tips

To prolong the lifespan of the Cummins 3400811 Gear Cover, regular maintenance is recommended. This includes periodic inspections for signs of wear or damage, ensuring that the bolts remain tight, and cleaning the gear cover to remove any accumulated dirt or debris. Additionally, checking the lubrication levels within the transmission and replenishing as necessary will help maintain optimal performance.

Troubleshooting Common Issues

Common issues with gear covers may include leaks, which can be identified by checking for lubricant stains around the cover. If a leak is detected, it may be necessary to re-torque the bolts or replace the gasket. Additionally, if the gear cover shows signs of damage or corrosion, it should be inspected by a professional to determine if replacement is needed.

Manufacturer Overview - Cummins

Cummins Inc. is a well-established company in the automotive industry, particularly known for its heavy-duty diesel engines. With a history of innovation and quality, Cummins offers a wide range of products designed to meet the demanding requirements of commercial and industrial applications. The company’s reputation for reliability and performance makes its components, like the 3400811 Gear Cover, a popular choice among truck operators and fleet managers 3.

Compatibility with Cummins Engines

The Cummins 3400811 Gear Cover is designed to fit a range of Cummins engines, ensuring compatibility and reliability across various models. This part is integral to the engine’s operation, providing a protective cover for the gear assembly and contributing to the overall efficiency and longevity of the engine.

ISM Series Engines

  • ISM CM570
  • ISM CM570/870
  • ISM CM876
  • ISM11 CM876 SN

M11 Series Engines

  • M11 CELECT
  • M11 CELECT PLUS
  • M11 MECHANICAL

QSM11 Series Engines

  • QSM11 CM570
  • QSM11 CM876

Role of the 3400811 Gear Cover in Engine Systems

The 3400811 Gear Cover is an essential component in the assembly and operation of various engine systems. It is specifically designed to encase and protect the front gear and other internal components within the gear system.

When integrating the 3400811 Gear Cover with the engine, it forms a sealed environment around the front gear. This seal is vital for maintaining the integrity of the lubricants used within the gear system, ensuring that they remain contained and effective. The gear cover also plays a role in shielding the front gear from external contaminants such as dirt, debris, and moisture, which could otherwise lead to wear and potential failure of the gear system.

In conjunction with the Gear Cover Kit, the 3400811 Gear Cover enhances the overall durability and performance of the engine. The kit typically includes gaskets, seals, and other necessary components that work in tandem with the gear cover to provide a comprehensive protective solution. This integration ensures that the front gear operates smoothly and efficiently, contributing to the engine’s reliability and longevity.

The gear cover’s design also facilitates easier maintenance and inspection of the front gear. By providing a removable cover, engineers and mechanics can access the internal components with minimal disruption to the engine system, allowing for timely inspections and necessary adjustments or repairs.

Conclusion

The Cummins 3400811 Gear Cover is a fundamental component that enhances the protection, efficiency, and maintainability of the engine’s gear system. By ensuring that this part is correctly installed and maintained, engine owners can maintain the integrity of their engines and avoid potential issues related to gear assembly protection.


  1. Kasab, J., & Strzelec, A. (2020). Automotive Emissions Regulations and Exhaust Aftertreatment Systems. SAE International.

  2. Sobey, E. (2009). A Field Guide to Automotive Technology. Chicago Review Press.

  3. Cummins Inc. (n.d.). Signature™ and ISX, Bulletin Number 3666251: Operation and Maintenance Manual.

SPECIFICATIONS

Hazardous Material
Non-Hazardous (NOI, ICE/Auto)
Notes
SOLD IN HIGHER LEVEL ASSEMBLY OR KIT REFERENCE TSB 070013
Package Dimensions
22.75 x 3.5 x 23.25 in
Weight
8.59 lbs
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.