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Steve_W

Original Poster:

832 posts

62 months

[news] 
Wednesday 23rd February 2011 quote quote all
Apologies for the poor rhyming title!

I have a Makita cordless drill (an older version of this: Makita at Screwfix on which the keyless chuck has become stuck closed with a screwdriver bit in it.

Any tips on how to free it off gratefully received!

The chuck is a hard plastic so I can't use anything like a pipe or oil filter wrench as the chain would shred the chuck casing.

I've tried letting WD40 soak into it overnight - no luck. I also tried a pair of rubber strap wrenches (one to hold the main chuck body still and one to try and undo) - no luck.

I can't see any flats on the main shaft from the body so assume it's one of those chucks that is held on with a screw/bolt into the end of the shaft - so I can't take it off without getting the chuck open!

I don't really want to have to go out and buy another drill just because this one has decided to become a permanant Philips screwdriver!

Thanks,
Steve

StevieBee

4,671 posts

140 months

[news] 
Wednesday 23rd February 2011 quote quote all
Have a B&D that does this and I find a 'generous tap" with a heavy hammer does the trick.

JM

2,155 posts

91 months

[news] 
Wednesday 23rd February 2011 quote quote all
How did it become stuck?

Was it in use e.g. screwing in screws and somehting dragging on the chuck causing it to slightly tighten every turn? If so maybe trying the same in reverse, i.e constant light drag on the chuck, gloved hand for example. Or juts use a stilson or similar with a rag wrapped round it.

cod man

405 posts

80 months

[news] 
Wednesday 23rd February 2011 quote quote all
StevieBee said:
Have a B&D that does this and I find a 'generous tap" with a heavy hammer does the trick.
I have a B&D one that does this as well. I find hitting the end of the drill bit into the chuck with a hammer releases it and allows you to open the chuch as normal. It does seem strange but it works! Next time it does it I will try a more general generous tap to see if that works on mine as well. smash

Steve_W

Original Poster:

832 posts

62 months

[news] 
Wednesday 23rd February 2011 quote quote all
Ah - hadn't thought of whacking the bit into the chuck - might try that. Percussive maintenance at its best smile

Not sure how it decided to lock up - was just using it to screw in woodscrews so no real load or contact with other stuff around it. Tried the glove & drag method before trying the opposing strap wrenches - I have a nasty feeling that even wrapped in a rag Stilsons would crack the thing.

Note to self - but a metal chuck next time!
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Simpo Two

59,559 posts

150 months

[news] 
Wednesday 23rd February 2011 quote quote all
cod man said:
I find hitting the end of the drill bit into the chuck with a hammer releases it and allows you to open the chuch as normal. It does seem strange but it works!
That makes sense because the jaws that grip the bit operate in a cone, and by knocking them backwards they naturally open up.

Look in an open chuck and see what happens as you open/close it.

grimfandango

372 posts

70 months

[news] 
Wednesday 23rd February 2011 quote quote all
The chuck on my drill is getting on a bit and it does this every now and then!

Stick it in the vice and tighten it as much as you dare, then spin the drill the appropriate way to loosen the chuck wink (if it spins in the vice you havent tightened it enough) you can try sticking it in the vice and loosening it by hand, but spining the drill seems to work better?!

smile

allegro

712 posts

89 months

[news] 
Thursday 24th February 2011 quote quote all
1. select slower speed on drill

2. select reverse

3. grab chuck

4. pull trigger

thumbup

ps. if you grab the chuck like a girl expect friction burns biglaugh

AntwerpMan

832 posts

143 months

[news] 
Thursday 24th February 2011 quote quote all
i usually find that trying to undo it is impossible

I tighten it and then tap it firmly with something handy (usually the handle of a screwdriver) and then it will undo. Sometimes takes a couple of attempts

Steve_W

Original Poster:

832 posts

62 months

[news] 
Tuesday 1st March 2011 quote quote all
One chuck now unstuck! (Just remembered to post back)

As suggested, hammering the bit into the chuck gave enough room to free the thing off.

I hadn't realised how rusty the inside of a chuck can get - I don't remember using it under water (or ever lubricating it in however many years I've had it).

A bit of wire wool and oil and the thing is working fine.

Ta to all who gave tips,
Steve

wildoliver

7,400 posts

101 months

[news] 
Friday 4th March 2011 quote quote all
How did the chuck get stuck when a chuck would come unstuck.

I'll get my coat getmecoat

Steve_W

Original Poster:

832 posts

62 months

[news] 
Friday 4th March 2011 quote quote all
Very good. It's Friday, isn't it? laugh

BliarOut

59,198 posts

124 months

[news] 
Friday 4th March 2011 quote quote all
Steve_W said:
One chuck now unstuck! (Just remembered to post back)

As suggested, hammering the bit into the chuck gave enough room to free the thing off.

I hadn't realised how rusty the inside of a chuck can get - I don't remember using it under water (or ever lubricating it in however many years I've had it).

A bit of wire wool and oil and the thing is working fine.

Ta to all who gave tips,
Steve
You hammered a hardened bit? yikes

Best way is to use the palm of your hand and strike it on a downwards direction, same as you would for a normal chuck if you're feeling lazy wink

Steve_W

Original Poster:

832 posts

62 months

[news] 
Friday 4th March 2011 quote quote all
BliarOut said:
You hammered a hardened bit? yikes
You know, that never even crossed my mind - good point!
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