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With hammer drills, there are usually 3 positions for operation.
Position 1 - Drill only - drill rotates
Position 2 - Hammer and Drill - Drill rotates and hammers
Position 3 - Hammer only - hammer action
It is important to read the instructions to activate the part to select position 1, 2 or 3.
Sometimes, it is easy to move from position 1 to position 2. Sometimes it is easy to move from position 2 to position 3.
Sometimes it is difficult to move from position 2 to position 3.
When it is difficult to move from position 2 to position 3, you may need to rotate the chuck a little way before turning it to position 3.
The ring of the impact bolt in front inside the locking sleeve where the chisel is driven on can be blocked (also broken part ) but not to see until you remove the parts .
This is an older, discontinued model Makita that only works as a hammer drill. It does not have the dial selector the newer models have to switch from 'drill' to 'hammer drill' to just 'hammer'. If you need, there's a parts breakdown and user manual available at:
First try the switch for hammerdrill/drill action. If it feels loose, then its internal. if it feels ok, then your hammers on the cage are stuck, frozen or worn.
i have 900 kango jack hammer motor work but don't jack in sacramento any repair dose work on the jack hammer can you give info who work in sac thanks jim
Always keep in mind that air hammers are extremely powerful tools. Thus, particular safety precautions should be taken when using them. Be certain to wear safety equipment such as safety glasses and earplugs. Also, when changing the air hammer's bits, always be sure to unplug the air hammer first. Finally when using an air hammer, always be aware of the position of the tool and work piece. The tremendous force that the air hammer exerts can cause the tool or work piece to jump powerfully. This movement could easily cause injury to the operator.
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