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

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Hilti te-72 hammer failure

How can I open Hilti te-72, to see what is wrong with hammer?
I oppend at the back, but I can't open the front side.
At the back fall off some broken pieces, form the middle.

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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.

Posted on Oct 09, 2009

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I thought hilti had life tim guaranteeplease chck this out first bfore stripping, please leave feedback

Posted on Jul 20, 2009

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The chuck should unscrew on the front of the machine. Put it in hammer only mode and use a pipe wrench to remove chuck then there will be a snap ring to remove further in the tool. I suspect that the conrod that drives the piston has broken as that recently happened with my te 72.

Posted on Aug 19, 2009

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