How to Diagnose a Bad Power Cord or Switch
This article outlines the basics of power tool and appliance electrical diagnosis. You can use a multimeter to test tool and appliance cords and switches, the two parts usually responsible for electri...
How to Remove a Stuck Drill Chuck
Broken gearboxes and sticky chuck screws can make removing a drill chuck difficult. This article explains the tricks you need to overcome these common repair setbacks.
Drilling, Fastening, and Hammering Power Tools
This article lists the major categories of drilling, fastening, and hammering tools, and explains the basic applications, types, and features of each.
You are right, most of the time a defective switch will be the cause of the brake not working on your drill. Just for chance you might check your brushes before you replace your switch though.
hi gridman,As a rule of thumb drills that have a forward and reverse will have a left hand thread chuck retaining screw and the chuck will be right handed. Hope that helps.
Tinker
I was drilling into some steel the other day when the bit snagged and yanked it pretty hard. I now have no power getting to the end of the tool. The motor turns with regular force but I can hold the chuck in my hand with nothing happening. Do I need a new gear assembly?
How is the flat head M6x26 removed so the the chuck may be removed? And, how is the gear assembly removed? The chuck and motor seem to be working well, but when a load is applied (i.e. drilling a hole) the chuck stops and the motor is still working. I suspect that the gear assembly is broken.
Thanks
Get the biggest Allen wrench you can fit in the chuck and insert it with the long arm out. Set the clutch to drill and the transmission to low gear. Set the drill on a solid surface. Wack the Allen wrench a few times with a hammer so it turns the chuck in a counterclockwise direction looking at the front of the drill.
Hi,
I disassembled my drill to replace the armature. During reassembly I noticed an extra part, the leaf spring. Could you please let me know exactly where this spring goes and its installation procedure.
I tried for over an hour trying to put the leaf spring as shown in the diagram and can seem to find the sweet spot.
Reply: Leaf Spring
WJA
Hello All,
We have had a number of posts regarding where that pesky little leaf spring is located in the Makita Cordless Drills. It's one of those parts that when you take a tool apart it seems to come from no where and land on your work bench, leaving you wondering where it came from. For this reason we have prepared an article and video that will help with this issue.
Hi chris, Check the condition of the motor brushes first. If the brushes seem to have plenty of life left in them then it is likely a bad switch. The brushes are part #194427-5 and the switch is part # 650583-6. Both are available from http://www.ereplacementparts.com. Good luck with your repair! -Mark
Hey all! I am having trouble with my drill. I bought it a year ago, but lost the receipt, so I'm thinking of repairing it myself, or taking it to a service center... I haven't decided yet. Either way, I am not knowledgeable about the mechanics of drills, and am wondering what is causing this issue I am having. When I put the drill on the second speed, I hear the drill working, but it doesn't actually turn the chuck. What is causing this? What part(s) would I need to replace? At present, it still works on the first speed, and both first and second in reverse, but I am sure it's only a matter of time before those stop working as well. Thanks for your help!
Help!!!, before i twist and break it more than it already is, how do i remove the keyless chuck? Does the whole assembly twist off?? If so which way do i twist?? I believe it's broken, it will not turn at all.
Thanks in advance, mike
Thanks for the help, one more quick question. The chuck is broken with a bit in it, I guess i could use a couple pairs of channel locks. What do you think? Thanks in advance, Mike
PS That video was right on!!
Reply: Makita 452 Keyless Chuck ??
Mike
You might want to put that drill in a vise and use the channel locks to try and loosen the chuck from the bit. Sometimes you can force the jaws to open. After that you can follow the video to remove the chuck. The problem with using the channel locks to remove the chuck itself is that the chuck screw is still in place. You have to get that screw out before you can remove the chuck.
Reply: Makita 452 Keyless Chuck ??
abclovell
OK Thanks again I'm going in......Regards from Maine, Mike
Have you ever bought a tool and after you have used it you thought to yourself "why did I buy this". This sure isn't one of these! I've had mine for over 2 1/2 years and had absolutely no trouble at all. The power is certainly there and the batteries hold up under extreme use and cold weather unlike my Dewalt and Milwaukee Li-ion drills. I would and have recommended this to anyone. Thank you Makita for making such a reliable tool!!!
Bought in summer 2007 for a porch project. Beat on it a lot! Still recharges in 20 mins and is my first choice for all repairs. At $200 (includes 2 batteries) it's pricey (for me) but worth it.
Call us toll free 6:30 to 5, Mon-Fri, mst 866-802-6383
Power Tool Parts 
