Question about Hilti Drills

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I have a TE 74 and it has just stopped hammering, the motor still runs ok but no hammer action, any suggestions?

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  • Master
  • 2,176 Answers

Could be quite a few things. e.g. stuck ram worn o rings and seals. I would suggest calling Hilti direct at 1-800-879-8000 for a service center nearest you. These are not the most user friendly tools to repair. It can be done but trust me it is a pain.

Posted on Mar 01, 2012

  • edwin Aug 10, 2013

    what grade oil does the hilti 74/75 use

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6ya6ya
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Posted on Jan 02, 2017

rowdy45176
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SOURCE: te-5 rotary hammer i need parts

Call Hilti direct at 1-800-879-8000 and speak to them. They can fax or ssend you a breakdown of the tool list. They will also sell you parts. I don't know of an outside source for Hilti parts. If I have helped you would you please rate my response accordingly and Thank you.

Posted on Aug 25, 2009

97F350diesel
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SOURCE: I have a Macallister Hammer drill Cod 144vchd and

The chuck may be frozen, try applying some oil inside it. If that doesn't work it will need to be opened and inspected for any damage or frozen gears. You always want to rotate the settings every so often to avoid something like this happening. The metal gears sometimes freeze/seize after being in one place too long.

Posted on Aug 28, 2009

  • 1383 Answers

SOURCE: I have a hilti TE

The hammering action is caused by air cushion between driver piston and striker piston.
A lack of lubrication will cause this or too much grease has entered cylinder or hammer is stored with nose of hammer up. To much, or little grease, or old dirty grease will cause poor hammering action because the striker piston cannot move all the way to front of cylinder (when you slam tool against the work, you are actually forcing the striker closer to the bit). Clean both pistons and apply fresh grease, also make sure orings on these pistons are in good order. If you think that the grease is ok, then try storing the hammer with nose down and bit removed so that the striker will creep down when still hot and be in the right position for next use /cold start. Good luck

Posted on Apr 14, 2011

  • 123 Answers

SOURCE: Hilti TE 17 Rotary Hammer repair switch fix

If you are talking about the wire going from the switch to the stator it difficult to get to. You have to remove the motor end cap, cooling fan and handle holding the switch. this will get you to the brush holders. These can be brittle so you need to be carefull. Turn the motor over and tap the end of the armature on concrete checking the brush holders every couple of taps to see if they are coming out of the motor housing. after they clear they will just come out. If you havn't done so already remove the wires going to the brush holders. Your stator will simply slide out after your brush holder comes out. This will give you access to the wires to repair.

Hope this helps.

Posted on Oct 29, 2009

Testimonial: "worked well for me"

ftw1952
  • 10319 Answers

SOURCE: Hilti TE 12. It will not hammer.

the rotory cam has been broken inside if not producing the hammer effect

Posted on Mar 11, 2010

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