1. Slide (Nut) B over (Mixer) A thread end first.

2. Drill 14.7mm diameter hole to intersect leak path.

3. Tap A+B into hole until snug.

4. Prepare gun by pulling back plungers on E (dual caulk gun), insert D (tubes) while holding vertical, remove C from threaded end of tubes.

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5. Quickly align threads on D (tubes) with B (nut) and tighten to secure.

6. Pump gun vigorously to expel grout to refusal or seal. If grout is washing out either pump slower or stop pumping and watch grout until it reacts halfway down A (mixer) then quickly give a pump to expel and repeat.