Broken Connecting rod in Bosch hummer GSH 11 E

Broken connecting rod to the needle shaft.....see a dealer.....It is not user serviceable............

Striker pin problem / broken connecting rod OR 1 o-ring 1 610 210 195 pos 165 thats become soft and not round anymore that will lock the striker in the sleeve when the lubrication gets older
The most caused suggestions but a cylindrical gear thats broken is rare



http://www.powertools-aftersalesservice.com/public/bosch-pt/service?p_auth=qwTIfM5m&p_p_auth=fCklnOO5&p_p_id=WSRP_bc93764e__6873__4b00__9a29__b331c9759da9&p_p_lifecycle=1&p_p_state=normal&p_p_mode=view&_WSRP_bc93764e__6873__4b00__9a29__b331c9759da9_wsrp-navigationalState=L0JPUy9QVEFTLVBULVNJUy1TaXRlL2VuX1VTLy0vVVNEL1ZpZXdQcm9kdWN0LURpc3BhdGNoO3BnaWQ9YmNkZTdkNTFiZjM0NGE0YTU1ZjYzYTYyOGY0Mi1yM1JtZlhPO3NpZD1ySWdEM2JoYjhNb25oZUR1YVZRZkpyZlF1a093UDNGQU5vbUFkanI3WlpPWjNLNlFIMm89

One of the four slide contacts on the electric field can be worn or broken .!!
measured switch and electric assembly for shure.
suc6

Bosch hammer drill 11304 uses sds bits and is generally a good hammer. Usually only needs yearly (depending on use) lube with Bosch grease to keep it working well. No hammering usually means lack of lubrication or broken connecting rod on the hammer piston. Not easy to repair. Tackle only if you have lots of experience with Bosch or other complicated hammers. Parts are easy to find. Good luck.

Hello,
My name is Dane. Most of the time due to the damage done to the engine from a broken connecting rod, you will have to replace the engine. I would search for a good used one.

Thanks. Dane

55-60 foot pounds

You would need to replace the rod $70 and needle bearing $30. Both appear to be avaiable at Babbitt's. A dealer would need to tear down the engine all the way then use a hydraulic press to press apart the crankshaft and then mount the new connecting rod and press the shaft back together. Dial gages must be used to get a correct centerline on the crank.

The total cost will likely be $1000 if a dealer does the repair from start to finish. Please rate my answer. Thanks.

You can use an adjustable face spanner wrench to remove that cap. I don't remember the pin size but you can measure the holes and get the appropriate size. You can remove the whole plate with the armature by undoing the 4 cap screws. Prior to removing the motor plate you have to remove the handle plate from the axle that goes through the body. Undo the nut that holds the assembly on and slide it off. You can now remove the Armature plate. After removing the cap screws pull the assembly out about 1-2 inches. You will see the wires that go to the field attached to the brush holders. Remove the screw that holds these wires to the brush holders. You can then safely remove the whole assembly. This also makes it easier to remove that cap plug with the spanner wrench, because you can now put the whole assembly in a vise. I always heat around the cap with a torch before doing anything. Then I tap on the plug with a hammer a couple of times and voila it turns alot easier. Corrosion almost always builds up on this cap because of the different metals. (Steel and Aluminum respectfully)

Your hammer may have a broken connecting rod. To inspect this make sure you ping the cylider and body with marks so you line them up the same way. Then remove the 4 cap bolts that hold the cylinder to the body. Remove the cylinder and inspect the hammer cylinder and rod. If the connecting rod is not broken you will have to inspect the gears and pinions to make sure they are ok.

Sounds like you have a broken connecting rod. The easiest way to check for this is to remove the 4 cap head bolts holding the cylinder on and remove it. If the hammer piston comes off with the clinder you should be able to see the break. If that is ok you may have some stripped gears or a broken spindle somewhere. But I really think it is the connecting rod.

AT THE UNDER PART OF THE DRILL HAVE 4 LONG SCREWS TAKE THEM OUT AND U WILL SEE THEM.