- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
How is the health of position 21 until 27 ??? i think the impactbolt pos 24 has a problem because of the weakness of the material thats used by most of the rotary hammers in these days ,a rotary hammer is not specially made for longlasting jobs, only a few brands have had it like DUSS and Hilti but a demolition hammer is made by more expensive heavier quality materials and made for working 1 or max 2 hours at a strech , a rotary hammer cannot last that jobs. Buy a consumables kit for this machine, and the special grease for it and use only the Makita heat-resistant lubricant, because only replacing piston rings will not work beware on the lubrication when if there was something leaking in front the o-rings are all be hard and weak because when the pneumatic function is lost and its leaking in the front of the spindle is the first thing to have an good working(and not leaking) inpactbold is the highest priority for the function of the hammerfunction. the first link is having the list Google
you should only get voltage at the brushes when the trigger is pressed... is the tool constantly running or is it doing nothing? If your getting voltage to the brushes and its doing nothing... check the brushes to see if they are worn out and not touching the armatures commutator. Replace them and the switch
Check for a speed lever on the case that changes the gear ratio from high to low speed There is a button in the front of the trigger and it limits the amount of pull you can give the trigger which controls the resistor setting in the trigger switch. Turning this will alter the speed when you pull the trigger
Are you mechanically inclined??? This is a little involved to do. First UNPLUG tool and remove the back section/trigger, there are about 6 screws holding the assembly to the back of the tool. REMOVE as an assembly. SQUEEZE trigger and PLUG into electrical outlet, while holding trigger unplug and reassemble, try this if light still on plug assembly in squeeze trigger and while holding the trigger unplug and retry. One if these should take care of resetting the light. If not the only other way is to send it to HILTI and have them reset it. Let me know if you still need more assistance and results.
Chech the brushes they have a spring pin in them if they wear down to far. This stops the machine and prevents the armature from becoming damaged.If the pin has popped out you need a new set of brushes
Don't rule out nothing. All it takes is it to run on a too small and/or too long extension cord. Also if you ran it on a generator that not keeping up the voltage. The good news is takes no time to check. First remove the bottom cover by removing the center plug with a allen wrench. Then the 4 screws on the outside of the plastic. Gently pry the cover off, it's tuff and you may need a screw driver. Now you have access to the brushes, remove them and check the wire connecting them, if it's discolor (should be bright silver) then you had a low power problem and they need replacement. While in here chech the end of the armature. Too get it out you must remove the brush holders. Just disconnect the wires and pull them out with needle nose plyers. The armature should be bright and without any cracks in the segments. You can clean it up a bit with sandpaper 180 grit or finer. When reassembling ensure you notice that the end piece off the casing has a v-notch in it that lines up with a notch in the bearing end plate. Next check the cord. Remove the on/off switch by gently poping it off with a screwdriver. Remove the screws under the switch. Then remove the the handle bolt that go side to side. Now you should be able to split the handle. With a meter do a continuity test form each pin of the plug with the wires at the connection point in the unit while moving the cord around. A short in the cord may only show when the cord is in a specific position. If this does not find the problem then you need to check accross the switch. Check continuity of the white wire in to the white wire out with a meter while the trigger is engaged and repeat with the black. Also check with the same meter white to black on both sides of the switch, you should have no continuity. This also goes for the cord. This should do it. If not let me know.