ON / OFF Rotary selector is jaming

Need more information to accurately help you - model#.
The easiest thing to check is possibly a broken selector knob - most Bosch selectors come off by pushing the red button in further than normal & turning clockwise (some however are counter-clockwise) further than it normally goes - knob will pull straight out. Inspect the pin on the knob & the receiver in the tool. If these appear OK you could be looking at a bad clutch gear or stripped crown gear depending on the model

there is a selector knob on the side that controls the tool functions for drill only/hammer with drill/ and hammer only. make sure it is in the proper setting. If it still doesn't rotate then you have a gear or a broken selector. If no hammer then you have worn o rings or a stuck ram. try the selector first and if still no change please be more specific if no hammer at all, or no rotation even when selector moved.

The SDS designation relates more to the type of chuck on the tool for the bits than to the tool/drill itself. There are both chisels and drill bits with SDS-Plus and SDS-Max shanks, SDS-Max being the the larger of the two. As far as the tools go: Demolition hammers will only hammer and can only use pointed chisels, scaling chisels, scrapers, etc, not anything like a drill bit that requires spinning to work. Rotary hammers can hammer and rotate the bits. Rotary hammers have a selector switch with two or three positions; one for hammer only for the above demolition bits, one for rotary hammer for use with carbite tipped drill bits, and some have a position for rotation only. The rotary hammer is a more versitile tool but more expensive because of extra workings inside.

May 8, 2006 Product : imageRUNNER C3100 / C3170 Title : E021-000x Error Code Error :
E021-000x Error Code: Developing rotary does not rotate and abnormal noise comes from motor.

E021 can be displayed when an error occurs in the developing rotary.
The detail codes are:
0001: The developing rotary home position cannot be detected.
0002: The intervals of flag detection during rotation is too short or long.
0003: The sensor does not detect the flag when the developing rotary stops at development point

As a result of inspection, it was found that the DC Controller PCB was unable to control the motor because it was faulty.

Workaround :
1. Check whether or not the developing rotary receives any physical load.
Rotate the developing rotary in a counterclockwise direction by hand to see whether it rotates smoothly. If any abnormality is found, eliminate the root cause. No problem is found, go to the Step 2.
2. Make sure that the connectors are securely fitted between J313 on the DC Controller PCB and the Rotary Motor (M8) or there is no pinched wire. No problem is found, go to the Step 3.
3. Replace the DC Controller PCB with a new one. If the symptom still recurs, go to the Step 4.
4. Replace the Rotary Motor with a new one.
DC Controller PCB: FG3-3846-030
Rotary Motor: FM2-0080-000 Canon USA, Inc. Systems & Technical Support Division

First you need to program the controller. Controllers do not come programed for a specific compressor. You will need to enter factory set point and and set all parameters. Horse power, pressure, DOL start or wye delta start etc. The new controller is probably set incorrectly. Look at factory set points on the old controller and copy all the parameters and then set the new controller to those set points.

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.

most of these types of tools have a manual switch it will be located on the body of the drill just behind the chuck on top or bottom or oposit the grip handle. some models have 2 switches.you want to make sure the switch points to the picture that shows a hammer and drill together.also rember it needs to have down pressure for the hammer part to activate.

They are filled with a special grease that comes from Bosch. It sounds like the impact bolt or the striker pin in the unit are not moving the way they should. These are the pieces that work together to create the hitting action. About all that can be done now is the unit has to be dismantled to get those to pieces moving again. Bosch makes what they call service packs for all thier hammers. They have all the o-rings and grease to get your hammer working again. A Bosch service center can supply you with the kit. Ask for P/N 1617000225, or they can take care of it for you.
Hope this helps

Hi there crporter3,
dial won't rotate...jamed or stuck. needs new wash rotary switch.

e2 is the code for a stuck buttom or its sensed one has been hed for thirty seconds try clear if that doesnt try this Press Delay Start for
3 seconds (then
individual buttons to
test) Turn Rotary
Cycle Selector
clockwise, the LED’s
around it will be
toggled. Turn Rotary
Cycle Selector
counterclockwise, the
7-segment LED’s
toggle. Press Rotary
Cycle Selector, all of
the LED’s around the
Rotary Cycle
Selector will be
toggled.
Press Power Off
twice after
starting test