Question about Hammering

1 Answer

Bosch demo hammer model 11304 034: is it necessary to service the oil or lubricant in these electric hammers. currently no problems exist.

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,383 Answers

Your hammer has brushes that push away from the armature when they wear past a certain point. At this time you could buy the service kit that includes most parts including grease to get your going again. The link below will give you an idea of the parts included in the kit. If however you store your hammer more than use it, you could pull the lower half and lube it. You can just order Bosch grease. If your hammer is used constantly / heavy / hot climate, you can increase the life of the tool by greasing more often. Most damage is done by using long cord or generator with too high or too low voltage. Good luck

Posted on May 28, 2011


1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Bosch demolition hammer wont hammer

MUCH NEWER BOSCH demolitionhammers have a special consumables kit you MUST use anyway its marketing technical made exactly on the calculated operating hours.

Every tools has his own kit and by the heavier models of powertools a very special lubricating oil instead of grease that was used by the older tools that are working with a slower tapping block instead of a very fast battle piece.

Apr 12, 2014 | Bosch Hammering

1 Answer

Bosch demolition hammer lubricant

OR fett (grease) or special oil depends on model.

Nov 01, 2012 | Bosch Hammering

2 Answers

Where do I ad oil to a makita hm1500 demolition hammer

Go to, put your model number in search box in the top right. Two models of the HM1500 will come up, select yours and open the owner's manual. Find the paragraph labeled 'Lubrication' and follow it precicely. Demo hammers are very picky about what type of grease they use and how much. Too thick and they won't work, too thin and they won't lubricate properly and the parts inside are very expensive to replace. Same applies to how much to use.

Jan 20, 2012 | Makita Hammering

1 Answer

Complet break down of makitia demo hammer

Go to, put your model number in the search box and hit the arrow or enter. Select your tool and the parts breakdown and owners manual will be available to view or download. The owner's manual has their recommended lubrication requirements.

Dec 26, 2011 | Makita HM1500B 42 Lb. Demolition Hammer

1 Answer

Roto hammer works but leaks oil out the chuck

If you are getting leakage out the chuck end, the shaft seal needs replaced. You can get it done at a Bosch service center or get the seal and replace it yourself. Don't wait to long there is only a limited amount of lubricant in the tool.

Jul 27, 2010 | Bosch 11236VS Rotary Hammer

1 Answer

Looking for lubrication info on Bosch rotary and demolition hammers. I am doing a service pack and need to know proper lubrication points and amounts to refresh my drills for work. Any place to find repair...

try going to and you will need your exact model number but they have parts explosions with the grease points listed on most of them Let me know if you need more assistance.

Mar 06, 2010 | Rotary Bosch 11263evs 1-3/4'' Sds-max® ...

1 Answer

Parts needed for Skil model 737 Demo Hammer

skil is owned by bosch :)
so i would have a look at the bosch site as this may well be a rebadged bosch demo hammer ( skil dont do them anymore )

hope this helps :)
if it does please vote

Jul 04, 2009 | Hammering

Not finding what you are looking for?
Hammering Logo

Related Topics:

444 people viewed this question

Ask a Question

Usually answered in minutes!

Top Hammering Experts

John Trevino

Level 3 Expert

1383 Answers


Level 3 Expert

3287 Answers

Pieter Vleeshouwers
Pieter Vleeshouwers

Level 3 Expert

1805 Answers

Are you a Hammering Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides