Bosch oil leak

[mrfixit1229]

I have a Bosch 11224VSR Hammer Drill that leaks oil out from around the chuck. What do I need for parts. The drill has very low hours and work well other than the leak

[cmoorejack]

Hey mrfixit,
Usually what happens is the grease is breaking down and the "oil" is separating from the grease..[sometimes from non use the grease will break down..] The seal is probably ok..but the part # is 1-610-283-019 lip seal...might as well replace if there is any doubt...and the grease is # 1-615-430-005
available at ereplacementparts.com along with a video on dis-assembly..
Craig

[mrfixit1229]

Thanks for that info I will definitly change the seal.

[Straightshooter]

Still struggling with disassembly but am to the point where oil is pouring out. The front end of the unit did get warm to the touch after drilling a number of 1" holes into about 4" of masonry.

Two things:
1. I did not notice much clutch slippage during use but am assuming it was the source of heat forcing this oil out. I see others have had this same problem. Is this tool only suited for light duty?

2. Is this oil really grease that has liquified? How much of it is there? Do you just pack it full when rebuilding? Is there an assembly process documented somewhere or do I just reverse the disassembly process?

I've rebuilt quite a few tools over the years and, although most were fun to do, frankly some were just not worth the effort.

Honestly, at $140 to replace maybe this is just a throw away. My next one won't be Bosch.

Any encouragement is welcome.

[texan168]

Yes the oil leaking from the front is grease that has broken down. It is a light duty hammer. After removing chuck assm. turn the dial to its stop push the lock in with something and turn it another 1/8 turn and this will allow you to get it off unfortunatly I can't remember off the top of my head the direction you need to turn it. There are four screws in housing you will need a long bit to get to them. After removing them the housing will slide off the front. Be gentle doing this as the shifter assembly will fall out of place and if you havn't seen one before it may be fun getting it realigned. You essentially just want to lightly coat the barrels and o-rings. and heavily coat the gears. You should use the correct grease called for as incorrect grease will not work as intended too light and it will leak too heavy and it will gum up. the anvils need to slide properly thats what gives it the hammering action. I wouldn't consider it a throw away for $140.00 as a $10.00 in parts and an hour of your time will get it up and running again.