Drill Bushing Cummins ISX15/QSX15 DOHC Casting Series

The Drill Bushing is a key component of the Complete ISX15 / QSX15 DOHC Casting Repair Tooling Kit (450-6110-60). It is used to precisely guide the taper length drill (416-6156-26) when drilling through the installed “J-Solid Diesel Iron Plug” (452-2613-13) during the injector seat repair process for these Cummins engines.

The Drill Bushing is a specialized tool designed for the accurate repair of injector seats in Cummins ISX15 and QSX15 DOHC Casting Series engines. This drill bushing is an integral part of the Complete ISX15 / QSX15 DOHC Casting Repair Tooling Kit (450-6110-60), a comprehensive kit developed for effective rebuilding of the casting injector seat.

According to the detailed instructions provided for this repair process, the Drill Bushing [416-6156-19] plays a crucial role in ensuring the precision of the drilling operation. The step-by-step procedure involves:

1. Threading and torqueing a “J-Solid Diesel Iron Plug” (6) (452-2613-13) into the casting from the face side of the cylinder head.
2. Turning the casting over to access the spring side.
3. Utilizing the Drill Bushing [416-6156-19] in conjunction with the taper length drill (416-6156-26) to drill completely through the previously installed replacement plug.

The primary function of this drill bushing is to act as a precise guide for the drill bit. This ensures that the hole is drilled accurately through the center of the replacement plug, which is critical for the subsequent steps in the injector seat repair process.

In summary, the [416-6156-19] Drill Bushing is a vital tool for accurately guiding the drill during the replacement plug drilling stage of injector seat repair in Cummins ISX15/QSX15 DOHC Casting Series engines. Its use ensures the precision required for a successful and durable repair.