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Bhp451 clutch slipping ie when drilling chuck stops turning

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6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 313 Answers

SOURCE: Dewalt 18V XRP Clutch Slipping

it very economical to repair the drill. replace the transmission.

Posted on May 24, 2008

  • 313 Answers

SOURCE: makita 8444d mxt drill

what is the setting in your clutch. if you set the clutch to the highest setting and it`s still slipping then you need transmission assy.

Posted on May 29, 2008

  • 32 Answers

SOURCE: Seems like the clutch has gone in the drill.

Try rotating the driver adjustment to make sure it is on a definate number, not in between or put it all the way to the drill position. A little 3-in-one oil does wonders as dirt and dust will keep it from rotating and engaging easly. If this does not work and the clutch is stripped, cost of rebuilding it is not worth it, usually 70% to 80% of a new one and other parts on it will wear out and you will be fixing it again. Good Luck

Posted on Jul 14, 2009

  • 2 Answers

SOURCE: 18v makita bhp451 cordless hammer drill.clutch

its prob stuck between gears one and two try a little wd40 on the gear selector switch

Posted on Jul 31, 2009

  • 2176 Answers

SOURCE: Slipping clutch on low switch with Milwaukee 2601-20

this tool has a 5 year limited warranty so I would try and have repaired under warranty. I looked at a breakdown and it doesn't specify how the chuck is on but I would to think it is threaded. the clutch is an assembly and there are no replacements parts other than the assembly available. Let me know if you need more assistance.

Posted on Jan 31, 2010

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It's hard to lock the drill bit, and it's hard to change the speed 1-2-3. I sometime need to play with the forward and rewind push on the drill ti be able to change speed?

Put some WD-40 in the chuck and use the chuck key to loosen up the chuck. The speed switch is going bad too. Those parts are readily available and aren't too difficult to change yourself if you pay close attention to which terminal on the new switch the wires connect to.

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Changing the chuck of a 6408 makita electric drill

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I have a makita BHP451 drill/driver with a keyless chuck and the gear box has striped out. I have a new gear box but do not know how to get the chuck off. I see a slot in the chuck that looks like you my...

The chuck has a left hand threaded screw inside. Turn to the right when removing the screw. Once the screw is removed you can remove the chuck by turning it to the left as it has standard, right hand threads. It is easiest to insert a large, L shaped allen wrench into the chuck, tighten the chuck, and hit the wrench with a hammer to spin the chuck off.

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Have taken apart the makita bhp 451 hammer drill to try & repair but not sure where the 2 small pins go in the gear assembly. Any ideas or would you have a diagram of the gear assembly? Thanks!!


If you are referring to 'pins' (about 10mm x .8mm) then these are stop pins. They sit into the clutch/chuck housing. If you look at the array of sprung pegs protruding from inside the clutch/chuck housing, you will see two small holes, diametrically opposite each other and very close to the sprung pegs. Those pins fit into each of those holes.

I hope this helps. If you are talking instead about two little rollers (about 8mm x 3mm) then i too would like to know where they go!


Aug 26, 2010 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

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18v makita bhp451 cordless hammer drill.clutch slipping

its prob stuck between gears one and two try a little wd40 on the gear selector switch

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Removing the drill bit from Makita bdf452.

try hitting the chuck with an hide mallet in the undo direction, it just needs shocking, to rease it

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Makita BHP451 Question

Buy a hitachi li-ion 18 volt ds18dl.
All parts are repairable & replacebable should they breakdown. Ie gearbox.
Gearbox parts are not available on makita , only whole gearboix which can be expensive.

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Chuck change

After removing the screw and inserting the allen wrench shift the drill to the LOW position and turn the clutch to the drill only position. Use an allen wrench about the size of the chuck capacity so that it will not flex when hitting it with a mallet. Sometimes they are stubborn because of the torque but this should work. Put the allen wrench at about a 30deg angle and hit the wrench. I support the chuck on a workbench or a block of wood will do fine. The chuck has standard threads.

May 10, 2008 | Makita Tools 18V 1/2" Lxt Lithium - Ion...

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Dewalt 18V XRP Clutch Slipping

it very economical to repair the drill. replace the transmission.

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Makita core drill model8406

Hi the 8406 was common for the intermediat gear to go have you yet stripped the gear box?
Quick test wear gloves to do this!
Turn on the drill if the chuck does not turn spin the chuck with a gloved hand TAKE CARE!! if the chuck catches grip one of the gears are gone.
Hope this helps let me know. Sean

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