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I need a trigger mechanism and firing pin for my hilti DX400

Posted by Anonymous on


5 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 33 Answers

SOURCE: Hilti TE6A battery dril 36volts,trigger problems

what about the brushes. even if they arent worn completely down they sometimes will not have enough pressure on the commutator tabs to keep the tool running. if it works better upside down or sideways that is often an indication of faulty brushes. the springs that hold the brushes against the commutator may also be weakened to the point that they don't properly force contact. you may also have burned or blank spots on the commutator/armature.

try new brushes and make sure the associated wires arent broken, pinched or otherwise damaged. also clean the commutator with a polishing cloth or very very very fine sandpaper, being careful not to scratch, groove, or otherwise damage the tabs. also, the bearings that fit in the housing to stabilize the armature may be worn or seizing, which will cause the armature to move erratically and/or bind.

if all of these things have been done, and the problem STILL exists, then probably the motor itself (armature/field) is breaking down. the brushes and bearings at least are probably in stock at a local tool repair shop, and of course all parts can be purchased through hilti.

Posted on Dec 04, 2009

  • 2176 Answers

SOURCE: where can i find a firing pin assembly for a hilti

you can either call them direct at 1-800-879-8000 or try for the breakdown, I would try the phone call first. Let me know if you still have a problem.

Posted on Jan 31, 2010

  • 123 Answers

SOURCE: hilti te22 trigger problem

the switch for the TE22 has been discontinued for years. Your best bet is to find a used one on ebay. Since it is a double throw switch somtimes you can get away with jumping one side "the bad side" and getting it to work for a while. The cord goes on the top connectors and the motor on the bottom. If you determine that one of them is bad then take the cord wire and move it directly to the motor connection below and secure it with the motor screw. A quick drawing below to show what I mean.

Hope this helps



Posted on Nov 11, 2011

  • 2176 Answers

SOURCE: hilti dx400 owners manual

call them at 1-800-879-8000 or go to their site at I would recommend calling them. Let me know if you need more assistance.

Posted on Feb 08, 2012

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Hilti dx400 owners manual

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