Question about Northern Industrial Tools - Northern Industrial Rotary Hammer - 3100 BPM, 800 RPM, 7.6 Amps

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I bought this roto hammer at a pawn shop and did not get a user manual with it. I noticed there was some grease that came in the case. My question is what part needs the grease and is there a user manual available. Thank you

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The grease is for the chuck as SDS chucks often seize up

Posted on Aug 22, 2010


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All grease packed hammers require a certain period of time to warm up. Depending on the room temperature, this time may vary from approximately 15 seconds (90'F) to 2 minutes (32'F). A new hammer requires a break-in period before full performance is realized. This period may require up to 5 hours of operation.
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