Throttle Shaft Bushing Drill Fixture Plate
- To add bushings for sloppy throttle shafts, upper castings need to be properly drilled. This precision machined fixture plate aids in accurately locating the drill position. First, use a drill, which fits snuggly, into existing throttle shaft holes. Mount casting onto fixture plate and position into vise on drill press, aligning drill in chuck. Without moving fixture in vise, replace drill with a 5/16" drill and drill out hole. Tap in bushing, with knurl end facing out, using soft hammer or piloted drift. If a heavier press fit is used the hole may have to be ground or resized using a 9/32" drill or reamer. To install bushing by bonding using an epoxy or super bonders, use "O" (.316") drill size. The inside blind hole is not normally re-bushed. If it is, the bushings will need to be shortened.