Bosch 24v SDS drill stops spinning help please

happyhero

Hi, can anyone help me please? I have a 24v Bosch SDS drill and when I put a large bit in it so its really having to work, usually on hammer, sometimes it will carry on hammering but stop spinning as if its too much effort and I have to back off and go in with less pressure to keep it spinning.

I thought it was a clutch slipping, maybe its getting old, had it a few years but someone said to me that you use that tube of grease that you get in the case. You put it somewhere round the chuck and it doesn't happen any more.

Can anyone enlighten me? Where's the grease for? Does the grease cure that problem? Why does it seem to slip and not spin?

Any help appreciated.

plumb1_2

happyhero wrote:

Hi, can anyone help me please? I have a 24v Bosch SDS drill and when I put a large bit in it so its really having to work, usually on hammer, sometimes it will carry on hammering but stop spinning as if its too much effort and I have to back off and go in with less pressure to keep it spinning.

I thought it was a clutch slipping, maybe its getting old, had it a few years but someone said to me that you use that tube of grease that you get in the case. You put it somewhere round the chuck and it doesn't happen any more.

Can anyone enlighten me? Where's the grease for? Does the grease cure that problem? Why does it seem to slip and not spin?

Any help appreciated.

I have the same drill for over 6yrs, 4 new batteries(£120) :eek: each.
Used everday, it does the same for me drilling 16mm and over holes, i just put it in reverse and withdraw the bit and clean the hole out.
You can get a spray/grease which you put into the bit holder, but i have found it makes little difference.

While you are operating it in SDS percussion mode, the clutch will slip if it jams(saftey to protect the drill) but will still carry-on hammering the pin.

happyhero

plumb1 wrote:

While you are operating it in SDS percussion mode, the clutch will slip if it jams(saftey to protect the drill) but will still carry-on hammering the pin.

But if it seems to give up too easy, is that not a sign the clutch is wearing? I find it is great with small drill bits but if you start using a 25mm bits it don't like anything tooooo tough.

bengraves38

happyhero wrote:

Hi, can anyone help me please? I have a 24v Bosch SDS drill and when I put a large bit in it so its really having to work, usually on hammer, sometimes it will carry on hammering but stop spinning as if its too much effort and I have to back off and go in with less pressure to keep it spinning.

I thought it was a clutch slipping, maybe its getting old, had it a few years but someone said to me that you use that tube of grease that you get in the case. You put it somewhere round the chuck and it doesn't happen any more.

Can anyone enlighten me? Where's the grease for? Does the grease cure that problem? Why does it seem to slip and not spin?

Any help appreciated.

I had the same problem with my drill. Try this when the drill stops release the trigger and manually turn the drill bit in the chuck about a quater of a turn. Then try to use the drill again. If it works fine then i know your problem.
One of the teeth on the main drive cog has snapped!!! Dont worry the new cog will only cost you about £5 for a genuine bosch part. Changing it is a bit of a chew on though. You first have to take out the two thousand screws that bosch so lovingly installed!!!! Once the case is open the front of the shaft with the offending cog will lift up and slide out. Next there is a circlip holding the cog in. I bu*gered around for about an hour with a few small screw drivers and i eventually got it apart and replaced. I would guess with circlip pliers you could complete the job in around 20 mins!!!!! Whatever you do don't take it to bosch. I am informed they charge around £45 to look at it and then £30 per hour to do the job. Not to mention their markup on parts!!!
Hope i can help.

bengraves38

:money:

plumb1 wrote:

I have the same drill for over 6yrs, 4 new batteries(£120) :eek: each.

Not sure if it's aplace you like but Ebay has batteries for the GBH 24VRE for around £80