E, E1, E1-Special HSS Tapered Reamer

The HSS Tapered Reamer (407-5205-90) is specifically designed for creating the accurately tapered holes required for E, E-1, and E-1 Special plugs, including the E-1 Solid Diesel Iron Plug (452-2605-91). This HSS reamer is a vital tool in crack repair, used after drilling and before tapping with the 407-5305-90 HSS Tapered Tap. Using this reamer is recommended, especially in thicker materials, to ensure proper plug fit and prolong the life of the tap.

HSS Taper Reamer for E E1 Special

The HSS Tapered Reamer is a High-Speed Steel (HSS) tool meticulously engineered for preparing holes to receive E, E-1, and E-1 Special tapered plugs. As highlighted in the Diesel Head Repair Catalog, this reamer is specifically designed for these plug types, ensuring the precise taper necessary for a secure and effective seal.

In the context of crack repair, as detailed in the “Crack Detection & Repair Instruction Manual & Parts List,” using a tapered reamer like this is a crucial step. After drilling the initial hole for a repair plug, taper reaming is essential, particularly when working with thicker metal castings. This process ensures the correct tapered profile for subsequent tapping.

Key Features:

• Type: High-Speed Steel (HSS) Tapered Reamer
• Compatibility: Specifically designed for Plug Type E, E-1, and E-1 Special.
• Application: Used to create the precisely tapered hole required before tapping for E-series plugs, such as the E-1 Solid Diesel Iron Plug (452-2605-91). Vital for crack repair in castings.

Importance of Reaming Before Tapping:

Using the HSS Tapered Reamer prior to tapping with the 407-5305-90 HSS Tapered Tap is a recommended best practice. This is especially important in thicker materials as it:

• Ensures the creation of a correctly sized and shaped tapered hole for optimal thread engagement.
• Significantly contributes to extending the working life of the tapered tap by reducing the strain and friction during the threading process.

By properly preparing the hole with this HSS Tapered Reamer, you can achieve a tight and reliable fit for your E-series plugs, which is critical for effective crack repair and other applications utilizing these tapered plugs.