This stage in the repair requires the installation of the "Injection Packers and Zerks" (nipples).
The 3/8” Plastic Injection Packers are designed specifically for high-pressure resin injection using 3/8” angled drill hole techniques. The Injection Packers are specially constructed of high impact virgin Nylon and the removable zerk grease fitting acts as a one-way check valve.
The plastic packers must then be hammered into the drill holes until each one is securely in position.
Lastly, a 5/16” nut driver in a low speed cordless drill is used to screw the zerks (grease fittings) into the plastic packers. Over tightening and stripping the threads must be avoided so their integrity is not compromised.