Runs but doesnt engage rotary or hamer. the machine itself looks in great condition its called bosch buldog extreme.

• If look at brushholder unmount it and make clean look if the brushes are go good to each other most causes on this BOSCH tools is that the brushes 70% are hanging on dirth in the brush holder (brushplate) 16 first problem second true problem are the 2 suppression coils (adapter module 817 ) on the electric field. and also parts pos 19 left right switch contacts for the brushes can sometimes on ofthem be broken.

http://www.powertools-aftersalesservice.com/public/bosch-pt/service?p_auth=3aqey22L&p_p_auth=svtCUe1o&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=L0JPUy9QVEFTLVBULVNJUy1TaXRlL2VuX1VTLy0vVVNEL1ZpZXdQcm9kdWN0LURpc3BhdGNoO3BnaWQ9YmNkZTdkNTFiZjM0NGE0YTU1ZjYzYTYyOGY0MkRvVWFTdFRIO3NpZD1QYnVpWlFuNGVZcGtyVjZMemRLLW5nWnpLM0FSaDhEanA3b2h6b3RZdmhBZ3hZcFR2eHM9

first remove parts of the chuck then dismount the grey housingcover 873 on the top 6 screws

dismount the powercable cable can sometimes be handy if removed the chuck and parts there is a great locking ring part 154 this must be unmount and removed and after that place the machine in a great bench vice if the old oil is removed and beat the hammerpipe out of the machine and make everything clean with a solvent cleaner and replace all parts and rings exactly at the site as they are present, but the front of the hammer tube there is an impact bolt locked its usefull part 854 there is a locking ring thirt ring in front that must be removed with a little screw driver and then 841 striker pin called but I call it the impact bolt must come out the hammer tube the other striker battlepiece i call it comes first out if you have replaced all parts with new the last is to replace the carbon brushes. important is the order of the rings what will be parts 47, 102, 48, 51 for this drawing its correct placed it was cost me 5 months to ask 4 times to change the order of a fault in the drawing of the gbh4-32dfr model beware the parts order for this machine drawing is correct ! by bosch and nobody believes me until now the parts are on the most drawings still today wrong on great online sites because rings 102 stands in front of part 47 but without making any publicity Bosch has changed the drawing of that machine but anybody else on internet have the old manual drawing of the gbh4-32dfr rotary hammer thats fast the same as this rotary hammer and i have tried 4 times by some bosch students there to make clear that there was an erroneous drawing is but they believe only Bosch but they have do not look at Bosch now, it was the first faulty drawing ever made by bosch i have seen, but no thanks to me and the service of bosch has allways a difficult German mentality wrangling for warranty but the tools are oft great.

ensure that the hammer drill or drill only lever is in the full over position as the gears will not be engaged if it isn't.

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 Boschtool.com and look under "find a service center" then find one in your area.

Chech the brushes they have a spring pin in them if they wear down to far. This stops the machine and prevents the armature from becoming damaged.If the pin has popped out you need a new set of brushes

http://www.ereplacementparts.com/bosch-parts-c-128.html

Have one of these machines and when on the drying cycle the drum started pushing the machine around the kitchen and making a very bad sound so we stopped it before it blew up. On looking at the internal workings we can see a screw and part of the plastic housing that held it in place fell to the floor. It appears to be part of a frame that holds a metal brace in place that holds the drum in place and ensure that it joins the door to the machine. To me it looks as thought the machie is capable of washing but if we use it to dry it will damage itself and breakdown. Anyone else had this problem and any solutions.

There is a clutch in the main spur wheel of the unit. These sometime begin to slip, on rare occasions they will slip to the point where the drill will not rotate. If you are interested the part number for this clutch is 1617000817.

There is a small brown wire on one of the brushes that has to be hooked up to the brush holder plate. If this wire has fallen of it will cause the service light to be on. If this is not the problem and the brushes are good, I would suggest taking it to a Bosch repair depot for a diagnostic.

If you go to the Bosch website and look under service you will find that they have a section to get drawings. Type in the Model of your hammer, there will be and exploded view of the unit, this should help greatly in finding any small clips or snap rings ETC