Question about Bosch 11241EVS SDS-Max Rotary Hammer

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How much oil and what type goes back in the bosch 11241 evs

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The best way is to find a Bosch service center and get the oil change kit. P/N 1615437511 this comes with a small bottle of oil and a top cover gasket. All you do is remove the top cover dump out the old oil and pour in the whole bottle of the new stuff. Couldn't be more simple.

Posted on Aug 06, 2009


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Posted on Jan 02, 2017


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11241 not hammering

  • suggestion 11241-EVS is not a breaker hammer but a rotary hammer but has almost the same good quality as a breaker hammer because its a reasonable solid product with a liquid lubrication.
Solvent clean the front drill and chisel holder in the spindle thoroughly to control before buying a maintenance parts kit , decision to take the step ONLY IF............ the spindle (most expensive part) is smooth has no rips or is worn but first inpriority check in advance whether the three SDS driving lanes for the bit internal closure and drill -drive of the drive spindle =pos 25 in the drawing is still be adequate enough a 1.5 mm and round tops is critical. and below that its not worth to repair. because the working hours on it have been achieved.
Otherwise If its looked like the 3 lanes inside the spindle all three are always the same size about 2.5 mm thick and are square topped the spindle (and the other parts are must have to be in good condition to service. buy the maintenance kit its in the drawing to find in the parts list pos 897 and oil partslist pos (898 or 895) for if you have more then one rotary hammer to service.
Most cause its conclusive for only this parts but a priority is to replace ALL pieces of the service parts. even the carbon brushes
look that after replace the green ring on pos 856 that this hammer piston connecting rod is correct mounted on the right side again with the 4 little stips on the (bearing) outside thats coming downsite on the eccentric cog wheel for a smooth working for the plastic plain bearing on the metal connecting rod, At the slightest mistake in the parts and lubrication breaks this connecting rod soon.
The striker pin has great priority to clean and control that part against leaking a retainer ring should be removed by use 1 or 2 little screw driver(s) in the small holes on the side of the spindle can be seen this ring. if the ring comes loose tilt the ring cross with a long screwdriver pull it out with a nose pliers. to get the (striker pin or impact bold (the part thats beat the chisel )by other brands named the special ring has exterior little orings inside becarefull and look first inspected how its build before there will one come out to push it again inside if one will come out.
There is also a new retainer ring for the parts around the striker pin in the delivered maintenace kit
By replace the several parts beware on one ring not to forget a very important ring pos 104 to replace it and mount it with some sillicon grease in the right groove before in order to prevent a disappointment of leaking oil because if leaking oil /air after a while the parts will dried out in a very short time and will burned out soon.

There is one problem rised between me and this kind of BOSCH powertools about the ring(s) in pos 102 there are 2 shim (bearing) rings pos 102 to find by the service handling and what you will know from me is that you must look that there are two shims to find instead of one because of to get a correct backlash measure between 0.08 and 0.22 that's the right tolerance to adjust the shim bearing rings to have some tools ONLY to know how to handle if they are forget the second shim ring in your model if you are going to make service if you only have one shim ring because there where failures in the drawing by Bosch on this and to find more about the use in some other comparable bosch models like gbh4-32dfr or 4-40de that will have in order to adapt the backlash adjusting have a failure if only one ring is used.

More on fixya to find about the pos 102 position rings by Bosch in several models.

Hoping that YOU HAVE 2 rings of pos 102 you have nothing to do to concern on let it be as it is. only if one ring you should hear the difference in rotary position , it should not be turn smooth.

But if one shim ring is used only like in the drawing it must be a factory drawing failure.
look on the partslist by the model you have it shows there are 2 different rings to buy or order of the same pos 102 for it they sell you can buy if you do not believe on my story its so imortant to adjust the gears for the backlash if only one ring is in this machine you will have to order 4 new pieces 2 of the 2 neccesary to adjust know to make the backlash rather on 0,08 mm then 0,22 mm as soon you have adjust because otherwise the machine will make the rotary gear worn in a to short time.
If its has only one shim ring and its have making already a very bad noise in the rotary drive position replace only if its worth all to gether to service also pos 51 and pos 860

Bosch 11241EVS 0611241739 Rotary Hammer Parts

Dec 18, 2016 | Hammering

1 Answer

How to disassemble a Bosch 11241 hammer drill.

This is a pretty complex tool to tear down, make sure you're up for it.
1) you need to remove the bit holder assembly (#21-30) by prying the rubber seal off on the end, sliding the sleeve off, removing the hog ring, and then the 2 pawls along with the remainder of the bit holder parts.
2) In the nose of the tool behind the bit holder is a large snap ring (#154) that must be removed.
3) Remove the screws on the gearcase cover on the top (#873) and remove the cover.
4) The entire barrel assembly will slide out of the nose (This is generally not easy)
5) Using an o-ring pick or small screwdriver through the holes on the side of the barrel you can reach another hog ring on the inside - once released you can push the striker and hammer out from the nose out toward the piston end.

I would install a service kit and fresh oil if you decide to open this up Bosch 11241EVS 0611241739 Rotary Hammer Parts

Nov 11, 2016 | Bosch Drills

1 Answer

Lube oil for bosch 11241 evs rotohammer

1 615 437 511 thats the number for your oil AND knowing that you must have this partnumber 1 617 000 430 if your machine has had the running hours then it will be made a much better time spending then change only oil.
the most important part is the hammer tube in the machine for which this absolute good air and oil is close

Feb 06, 2016 | Bosch Garden

1 Answer

Bosch 11241 evs rubber boot removal

  • Then first remove pos 21 if chisel is locked move the tool holder backwards as far as possible you see the rubber cap pos 21 can be released with a plier or little screwdriver then after that snapring pos 143 to remove with a shaft retaining ring pliers as little set it between the small groove between the two ends of the ring thats on the metal ring its on pos 31 a rubber ring beware PARTS pos 25 blocking elements 2 pieces are in most cases 1 or 2 are broken thats why its not release the chisel in most cases. , beware if this tool has had its working hours , its the best thing to sevice it a 1 617 000 430 a consumables kit and 1 615 437 511 a oil reservoir are not expensive and all the neccesary parts are to in this kit andits made repair more meaningful because carbon brushes and al neccesary o rings are in the kit. also the blocking elements and more . its much cheaper then the parts separate.

May 25, 2013 | Bosch 11241EVS 1916" SDSMax Combination...

1 Answer

What type of oil goes in the bosch hammer drill crank case

Not for the little handtools there are 2 different greases depending on the model.

But the average hand 5kg Bosch hammer

1 615 430 019 oil 1000ml

Feb 01, 2013 | Bosch Tools & Hardware - Others

1 Answer

How to replace knob assembly on bosh 1 1/8 rotary hammer drill 11222 evs

Push the red button all the way in as far as it goes and turn the knob to the left (counter clockwise) past it's normal position. Then you can pull the knob out. When you replace it make sure that the pin part fits inside the slot of the shifting arm inside the tool.

Aug 07, 2012 | Bosch Drills

1 Answer

I have a bosch hamer drill 11241 and i am looking for a repair kits or some parts. becouse the hamer is not working. the drill works ok i live in toronto canada

The kit you are looking for is what Bosch calls a service pak the P/N 1617000430. It comes with all the o-rings, brushes and oil to do a complete overhaul. Go to and look under "find a service center" then find one in your area.

Jan 09, 2011 | Bosch 11240 1-9/16" SDS Max Combination...

1 Answer

How to attach 'plunge lock lever' to Bosch 1617 EVS router. I had this router replaced because of corrosion, when I opened the case the lever was detached from plunger. Tricky to attach, any suggestions

I have been repairing the Bosch tools for quite a few years and I still hate putting those levers on. Unfortunatly,there are no "tricks", you just have to set the spring in the lever then use a small screw driver to set the other end in its slot. Then try to rotate the whole thing untill the lever goes into the proper notch. It usually takes me 5 or 6 times to get it in, sometimes it goes in first time (rare). Sometimes I'm at it for 1/2 an hour.

Good Luck

Oct 24, 2009 | Bosch 1617EVS 2 Router

1 Answer

Zivan NG3 battery charger diagrams

your NG3 should have been preprogrammed for the type of batteries you are charging. The NG3 has the 3 wires from the power cord. Here is what I have done:
Brown from charger goes to black wire
Blue goes to white wire
yellow green goes to green ground.

Mar 11, 2009 | Ryobi Multi-Volt Battery Charger

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