Fuel injector repair tool
View Patent ↗A tool for removing fuel injectors from a head assembly is disclosed that is comprised of a bolt, a dual-tined fork, and a plate that fit into the existing hold-down bolt holes in a head assembly and grooves in the fuel injectors.
1. An apparatus for removing a fuel injector, comprising:
a threaded bolt with a threaded portion, a cap, and a tip, wherein the cap and the tip are located on opposite ends of the threaded bolt;
a fork comprising a threaded hole and a pair of tines, wherein the threaded hole and the pair of tines are located on opposites ends of the fork;
a plate with a top surface, a bottom surface, a dimple, and a plug, wherein the dimple is located in the top surface and the plug extends from the bottom surface;
wherein the threaded portion of the threaded bolt engages the threaded hole and the tip of the threaded bolt engages the dimple.
2. The apparatus of claim 1 , wherein the dimple is offset from the center of the plate.
3. The apparatus of claim 1 , wherein the plate is generally circular and the plug is cylindrical.
4. The apparatus of claim 1 , wherein the cap contains a hexagonal socket.
5. A method for removing a fuel injector with grooves comprising:
removing a fuel injector hold-down bolt from a fuel injector hold-down bolt hole;
removing a fuel injector hold-down fork from the fuel injector;
placing a tool comprised of
a threaded bolt with a threaded portion, a cap, and a tip, wherein the cap and the tip are located on opposite ends of the threaded bolt;
a fork comprising a threaded hole and a pair of tines, wherein the threaded hole and the pair of tines are located on opposites ends of the fork; and
a plate with a top surface, a bottom surface, a dimple, and a plug, wherein the dimple is located in the top surface and the plug extends from the bottom surface;
into the fuel injector hold-down bolt hole and the grooves in the fuel injector, wherein the threaded bolt is threaded into the threaded hole, the plug is placed in the fuel injector hold-down bolt hole, the tines are placed around the grooves in the fuel injector, and the dimple is aligned with the tip; and
rotating the threaded bolt.
6. The method of claim 5 , wherein the dimple is offset from the center of the plate.
7. The method of claim 5 , further comprising a hexagonal socket in the cap and wherein the step of rotating the threaded bolt is further comprised of placing a wrench into the hexagonal socket and rotating the wrench.
8. A system, comprising:
an internal combustion engine;
a fuel injector partially extending into the internal combustion engine, wherein the fuel injector has parallel flat surfaces on the portion of the fuel injector that does not extend into the internal combustion engine;
a hold-down bolt hole in the internal combustion engine located next to the fuel injector;
an apparatus comprising
a threaded bolt with a threaded portion, a cap, and a tip, wherein the cap and the tip are located on opposite ends of the threaded bolt;
a fork comprising a threaded hole and a pair of tines, wherein the threaded hole and the pair of tines are located on opposites ends of the fork and wherein the fork engages the flat surfaces of the fuel injector; and
a plate with a top surface, a bottom surface, a dimple, and a retaining plug, wherein the dimple is located in the top surface and the retaining plug extends from the bottom surface, wherein the dimple is offset from the center of the plate, and wherein the retaining plug is placed in the hold-down bolt hole;
wherein the threaded portion of the threaded bolt engages the threaded hole and the tip of the threaded bolt engages the dimple to lock the apparatus in place and restrict its movement; and
a tool coupled to the cap.
9. The system of claim 8 , wherein the tool is a wrench.
10. The system of claim 8 , wherein the plate is generally circular, the retaining plug is cylindrical, and the cap contains a hexagonal socket.