Hitachi Drills - Page 7 - Recent Questions, Troubleshooting & Support

Other than two quick squirts of WD40 and nice new chuck key?

your batteries are bad, they charge to the voltage but the cranking amps aren't there....you have to buy new batteries

Just try to buy a new battery and test.If persist,change the charger. Bet the bats are dead.

It sounds like the switch is bad. Not uncommon to loose either forward or reverse when they fail. Here is a link for buying a new switch part #322994

http://www.google.com/search?q=322994+&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a#q=hitachi+322994&hl=en&client=firefox-a&hs=8ps&rls=org.mozilla:en-US:official&prmd=ivns&source=lnms&tbm=shop&ei=h5AwTpjvDeyHsALni9Fx&sa=X&oi=mode_link&ct=mode&cd=5&ved=0CAsQ_AUoBA&bav=on.2,or.r_gc.r_pw.&fp=638e4ae79ecbd0fc&biw=1024&bih=627

WWW.toolspartsdirect.com

32 1 in stock at
2011-06-30 22:59:21319761 Housing (A & B) Set for DS18DVB $33.48 1

The owner's manual is available on the Hitachi product page: http://www.hitachipowertools.com/index/main-navigation/tools.aspx?d=2,20&p=619 . The direct link is: http://www.hitachipowertools.com/PDF/All/DV18DCL_DV18DVC_OM.pdf .

I hope this helps.

Cindy Wells

You can order the switch on the links below.

http://www.ereplacementparts.com/dcspeed-control-switch-p-188221.html

http://www.toolsandmachinery.com/product_info.php?products_id=956847

It sounds like the variable triger assembly needs replacing.

you have me stumped on this one. The tool you have is a spline shank hammer and it should accept all standard spline bits and also hammer iron that is made for these. Is it possible that the Bosch bit has a burr on the splines not allowing it to lock? I have checked the Hitachi site and found no reason it would not work. I will continue checking though.

replace the battery if the charge test good on a volt meter Radio Shack can test if for you possibly for free

This guide should assist you in the removal. It is a very standardized system so you should have no issue. http://www.ereplacementparts.com/article/890/How_to_Remove_a_Drill_Chuck.html