Question about Hilti TE 7-C 120V Rotary Hammer Drill

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How to open hilti drill te 72? - Hilti TE 7-C 120V Rotary Hammer Drill

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To seperate the motor housing from the gear housing you need to loosen up the two 5mm allen head bolts at the base of the handle. At the top of the handle you will see a hole. there is a 5mm allen head bolt that you will access through that hole. Back that screw all the way out. The lay the tool with the gear housing down and the motor up. Remove the 5mm bolts holding the two housings together. Tapping with a soft blow hammer you should be able to seperate the housings. Be carefull that you don't lose the lube out of the housing.

Here are instructions on removing the front end.

If yours is a metal housing here is how you disassenble the front end.First you need to put a flat bladed chisel in the chuck. Then lock the chisel in a vise. Next you put a pipe wrench on the chuck cap nut. That is the piece on the end of the chuck. Using a cheater bar turn the nut off counter clock wise. You then can remove your chisel, the cap nut, an oring and the locking sleeve with two rollers. This will expose the chuck that is held in place with 8 5mm allen screws. After that you have a large snap ring to remove before pulling out the rest of the front end assy

Posted on Sep 14, 2010

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Posted on Jan 02, 2017

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2 Answers

I have hilti te 72 it works but will not hammer


More than likely the con rod is broken. To check remove the shift lever on top by removing the center phillips head screw. then with internal snap ring pliers remove the snap ring.put your phillips screw back in with out the shift lever. Take a pair of pliers and grab the screw and pull the shift boss out. You then can see if the con rod is broken or not. The bad news is those parts are hard to come by.

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Turns but does not hammer


Hilti no longer carries parts for the TE72. You would have to find parts on Ebay or somewhere like that. There is a good chance that the con-rod is broken. Taking off the selecter lever on top. Removing the snap ring and then pulling out the shift boss will allow you to view the con-rod.

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It could be that your connecting rod is broken. You can check by taking your shift lever off of the top of the gear housing and then removing the snap ring to remove the shift boss. That will allow you to look at the crankshaft and connecting rod. If it is broken I would check with Hilti to see if they still carry parts for the TE 72.

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Hilti te-72 hammer failure


Do not put it in hammer mode and try to unscrew the chuck! This will break the housing internally. To remove the chuck you will have to put a chisel in the chuck. Lock that chisel in a big vice. You will then have to put a pipe wrench on the chuck to unscrew it. It is regular threads but there will be loctite on it. Once that is off your will have a spring and two roller bearings to remove before you can slide the bell off. You will then have 8 5MM screws to remove. This will remove the chuck. You will then have a snap ring to remove. After that you can remove the whole cylinder assy. More then likely your connecting rod is broken.

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