SDS drill stuck? Am I this stupid???

[eLuSiVeMiTe]

Just finished watching a couple of " Youtube Experts " narrowly avoiding injuring themselves dismantling an SDS chuck.

Realizing it's likely to be a mushroomed SDS extension end , It looks like this is the way forward for me , but I think I'll make up a grommet remover fork and something akin to a ball joint splitter as I quite like the skin on my hands & fingers to remain unpunctured and intact .
What I won't be doing is hanging the thing out of a vice by the SDS adaptor bit and hammering the sleeve free with a chisel , so the drill drops down onto the floor .

After doing the initial basic strip down , I'll lay it flat on the bench with the tool end held securely in the vice and lightly support the drill with strips of wood so when it finally comes apart everything it's still on the bench .
So pleased I rescued an ancient 9 inch Black & Decker bench grinder out a scrap bin years ago and put some new decent stones on it so I can dress the damaged spigot end , but I'll go to the local Screwfix and see if they will replace it as it is only a few days since I purchased it .

I'd take it back for a refund tbh.

My SDS drills have been used and abused for years with nary a stuck bit.

100 notes gets a decent brand sds these days

 

[brightspark]

Had my SDS for years, never had any issues, then last week, went to use it, impossible to get a drill bit in.

Must dismantle the chuck.

i have a couple of drill bits that refuse to go in a lot of others i have no bother with so binned them

 

[zx9]

I'd take it back for a refund tbh.

My SDS drills have been used and abused for years with nary a stuck bit.

100 notes gets a decent brand sds these days

^^^^ This 100%, tell them not fit for purpose and you want a refund.

 

[Barking Mat]

i have a couple of drill bits that refuse to go in a lot of others i have no bother with so binned them

Neh, mine just won't accept any currently.

 

[DAPPH]

When I got it stripped down and exa ined the SDS adaptor bit I noticed a tiny burr on each full cut way , I suspect the problem was me the bit was a tight fit and I thought I'd got it in right . Ghe only way I can think of getting th burrs on each long slot is if I had them against the ball bearing locks as the shape of the burr indentations is about 1/3 dia of the locking ball bearings. Just to be safe I ground a slightly better chamfer on the end of the SDS adaptor so it looked like my quality SDS bit ends , gave the channels a kiss with a swiss file too, to give a bit of "V" lead over the driving flanges internal to the driving collar . Greased it up used plenty of grease to stick the ball bearing in the driving collar and used a long Wolf F clamp to compress the locking spring in place whilst I slipped the retaining clip oved the open end . Used a 21 mm extra deep socket to gently push it fully home into its seat.

I noticed when I stripped it that there was no ball bearing retaining collar as shown in a lot of tube videos .
It went like a dream , plenty of grease on the SDS drive bit end with sprayed in WD 40 thinned things nicely.. so no hydraulic lock to make changing tools difficult .

I made a simple U shaped yoke on the band saw out of some 1.5 inch x 1 " scrap wood, this enabled full retraction of the release sleeve to the back of the drill , through the open part I was able to use two flat 3.5 mm screw drivers to rotate the keeper clip ring round to the driving groove enough for me to lift the clip with one screw driver and fully pop it out the retaining groove with the other .
Thank god I have a small rotating vice for the work bench , had to reset it so it held the drill body whilst th main weight was supported by the bench top & a bit of scrap wood as I'm 40% disabled in my left shoulder joint & simply could not have messed about with the drill in both hands like the You Tube " Experts did .

Piccies to follow .... SWMBO had called me in for my evening meal.

 

[DAPPH]

Leaving the end most rubber cap ,on slip the wooden fork between it and the release collar, holds the collar back and allows easy removal of the split retaining ring . I was lucky and the scrap wood was the perfect size.

The original chamfer was half the size of the one I ended up grinding on the adaptor , at the top left vertical groove you can just still see evidence of a tiny nick where the actual driving lugs had knocked a burr up which prevented easy release of the adaptor or chisel etc . The actual end was not 100% at right angles with the shaft either ... as though the metal had been cut with bolt crops and left a a tiny ridge was in place which got flattened and mushroomed a fraction . The 9 inch grinder soon sorted it out .
From now on every time I take out an SDS bit /drive I'll examine it carefully and adjust if needed . I'll not be buying a really expensive adaptor any more these days day as I'm 72 and won't be core drilling much in the future .

Having the drill in the rotating vice with the rear most end supported on a bit of scrap wood and using on of my big 35 year old Wolfe clamps made it so easy to reassemble things and compress the locking ring spring so I could pop the final retaining split ring clip on the drive shaft used a 21 mm Ed socket to gently press it on evenly in one go , then add the final sealing rubber cap.