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check the mast with the four foot level until both the mast and indicator are level, then tighten the mounting screws underneath the box. Drilling on hard surfaces takes time, it does not matter how hard you push down the teeth will cut only what they can. Pushing down hard only creates problems later. The kelly bars can stress and bulge below the rotary (due to lifting the rig). While drilling the mast should be straight. This, in essence, makes the kelly bars straight. When the rig is lifted, the mast along with the kelly bars are not vertically straight. This will put more stress on the inside of the kelly bars next to the mast because the crowd pressure is focused in one area (not clear around the kelly bars). The kelly bars cannot handle this amount of stress. They will buckle. Too much down pressure will eventually wear out the racks on the kelly bars. The racks that lock the kelly bars are only three feet long. After time, the kelly bars slip. This is due to the amount of down pressure that is exerted on the three-foot section of racks inside the rotary and the kelly bars. The wear pattern will not allow the racks to lock properly and they will begin to slip. The teeth cut faster if the rotary is turning faster. If too much pressure is exerted then the rotary is slower. If the CARBIDE TIPS are knocked off of the tooth, then the teeth that still have the CARBIDE TIPS will absorb more of the cutting. It is important to knock out the teeth that are missing the Carbide. The teeth are put on in a pattern to work together. If they do not work together then you will see more shank or teeth breaking off. Water Drilling Water Drilling should be the only instance where excessive down pressure is required. Once the driller has encountered excessive amounts of landfill water, drilling should not cease for any reason (unless other wise directed by the client). If the waste is hard to hold onto, then you will need to immediately place the plates in the bucket this will aid in holding the waste in the bucket. You need to stay ahead of the water to reach total depth. If you stop, that will give the water a chance to rise in the bore until it reaches its highest level. The water will actually cause the bucket to float in the bore. This is because the water has a small space to flow around the bucket, which creates the impression that the bucket is floating. You will have to rotate clock wise and counter clockwise with more down pressure than usual to get to the trash. If you do not all you will do is mix the trash up in the bore and if there is a substantial amount of soil then a thick soup will be created which will slow drilling. Listen to the drill rig. You can tell when you have reached the trash layer. The machine will sound different and the hydraulics will be less forgiving. Once you think you are in the waste then continue drilling clock wise for at lease five minutes to insure that the bucket is cutting in the waste. When coming out of the borehole pull out very slow. If you have a loaded bucket, then the time spent in the bore was long enough. Depending on how tight the waste was in the bucket will determine if you need to spend the same or less time in the bore. If the bucket comes out empty then you will have to spend twice as much time in the bore with the second bucket. Once you have penetrated the waste, eventually the time spent in the bore will shorten. Using water Bucket The water Bucket was designed to remove sludge's and water in landfills that have used the trench and fill method or have leachate problems. When you drill through a *Elmo Old Tooth time New Tooth to replace