Question about Milwaukee 5321-21 Rotary Hammer

1 Answer

Wont run continuously

When i press trigger it runs for about ten seconds and then stops. you repress the trigger again and it runs for ten seconds again. it just will not stay on until i say when. whats up with this thing

Posted by on

  • cynjun Sep 26, 2008

    no this is not the fix. it did not work.

  • David Ford
    David Ford May 11, 2010

    I would look at the brushes and clean area with compressed air. Sometimes the brushes get hung up in the holder and make intermittent contact. Second if this tool is not that old it might still be covered under warranty. Good luck

×

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 17 Answers

Hold the button in all the way

Posted on Sep 26, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My hr5201c rotary hammer does not hammer even after replacing the piston rings. I notice that when I depress the trigger it hammers. What could be the problem?


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

Sep 15, 2016 | Rotary Rotary Hammers

1 Answer

Rotary hammer does nothing at all when I pull the trigger


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

Nov 16, 2012 | Rotary Hammers

1 Answer

Drill not running at correct speed


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

Nov 03, 2012 | Dewalt DW005K Rotary Hammer

1 Answer

HELLO I HAVE THE HILTI TE76-ATC WITH CODE 330200 WE CHANGED CARBONS . HOW I CAN MAKE THE RED LIGHT FROM ON TO OFF.


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.

Feb 17, 2012 | Rotary Hammers

1 Answer

Bosch 11235evs power at switch but still does not run.


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

Aug 11, 2010 | Bosch 11235EVS 1 - 3/4'' SDS - Max Rotary...

1 Answer

D25600 does nothing when i pull the trigger


take it to a repair shop.could be broken wire in lead,could be burnt out armature,could be crook trigger switch,try a new plug on the lead

Jul 05, 2010 | Dewalt D25600K Electric Rotary Hammer

1 Answer

Hi. i have ryobi a 3 speed hammer drill that won't run but attempts to start


Hello,

it sounds like a damaged switch. It is best to have it checked and replaced if it is broken. It´s better to do before it starts running and wont come off :D

Oct 15, 2009 | Rotary Ryobi 1/2" Hammer Drill ZRD551HK

1 Answer

Drilling slowly


If the battery is OK then the problem will be in the variable speed trigger switch.

Sep 24, 2009 | Dewalt DW999K 7/8" Cordless SDS Rotary...

1 Answer

Drill quit working


what you are missing is a dewalt hammer drill.

Apr 25, 2009 | Rotary Ryobi 1/2" Hammer Drill ZRD551HK

1 Answer

I got a bosch 11236vs


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.

Jan 31, 2009 | Bosch 11236VS Rotary Hammer

Not finding what you are looking for?
Milwaukee 5321-21 Rotary Hammer Logo

Related Topics:

142 people viewed this question

Ask a Question

Usually answered in minutes!

Top Milwaukee Rotary Hammers Experts

John Trevino

Level 3 Expert

1378 Answers

Mike Carew

Level 3 Expert

958 Answers

Phil Rivera

Level 2 Expert

83 Answers

Are you a Milwaukee Rotary Hammer Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...