20 Most Recent Makita HR4041C 1-9/16" Spline Hammer Questions & Answers

There is no tension to adjust on the Makita HR4041C rotary hammer drill. If you are not getting the hammer action you think you should be it's possible the o-rings on the piston are damaged or not lubricated or the striker is stuck or not lubricated enough to work properly. If you're having problems with the bit turning, there are several gears that turn the bit that could be slipping or are stripped. If you need a manual or brakedown of the tool, one is available on www.makitatools.com. The insides of rotary hammers are fairly complicated so be carefull of what goes where if you decide to take the tool apart to check for internal problems.

Question edited for clarity. Page 8 of the manual. It has a thermal overload reset button. https://images.thdstatic.com/catalog/pdfimages/d7/d7c15f60-bf02-4c9b-9158-301e8e8ea0e0.pdf ..

you would need a separate regulator to regulate outgoing pressure and you have only an on/off reguastor.

https://www.helpowl.com/p/Makita/MAC5200/179201 This site will help you.

lubricate the piston by putting oil in the air line use light oil on the hammer section

Makita and Dewalt can being used with similar nails of other brands ? some sellers will you do believe but i can say by marketing technical updates Makita and Dewalt have very rare strict tolerance on dimensions but only original nails will and must working without problems , and 2nd choice nails have allways an other thickness or other kind of bonding they are made of. , use only the nails of the brand you working with if you have or MAKITA or DEWALT use the nails for the brand. otherwise the nailbrads will not slide smoothly its very critical made the last years more and more models of the brand have restrictions and get very fast troubles with cheap homebrands of hardware store parties. USE ONLY ORIGINAL delivered by the new Makita and Dewalt tools. otherwise if not working read the user manual if no succes go for warranty if its not work correct .

I think this carry a brush motor you need to check your motor if its running it could be the winning got damaged , running slow mean shorting wire ,,

The nails may be to light gauge for fibre cement board as this board is quite hard to penetrate so the nails will start bending before they are fully in.

the ones that bend are do to low air [air recovery ]and need full air to go through the dense boards

motor pulling to many amps short or power supply insufficient

Does the nailer fire but just not drive a nail, or does it not fire at all? If it's the first situation, it's a magazine feed issue. I had one of those and it started doing something very similar. The magazine spring had gotten dirty from use which didn't allow it to function properly. (Carefully) disassemble the magazine and clean the spring. Automotive brake cleaner works pretty good for that. Spray the guides with a dry lubricant then reassemble. If it's the second situation, I can't help you there.

as long as the cylinder moves pressure will build up.but you will need to change gaskets on the cylinder

not enough pressure or the release is stuck

So you are saying that at 140 it leaks down to 120 and then it is fine? You need to check for leaks with soapy water and listen closely to the exhause and intake valves when it is off. Check the unloader valve and the regulator assembly.;

http://www.toolpartsdirect.com/makita-mac5200-3-0-hp-air-compressor.html There is a part called an unloader. It reduces the pressure on the compressor when the unit stops at the desired pressure. The actual unloader may be part of number 50 in this diagram.