Genuine OEM Replacement Selector Knob Assembly for Bosch Rotary Hammers/Drills. This part is sold Individually and it is made out of Plastic. To remove the knob from the tool you would need to turn it all the way counter clockwise then push the red button. Then keep turning it counter clockwise until the knob lines up with a keyed slot so you can pull it out.
Knob Assembly 1612026037
OEM part for: Bosch
Part Number: 1612026037
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Compatibility
This Knob Assembly will fit the following 79 machines. Confirm this part works with your model, and view the detailed model diagrams and repair help we have to offer.
This item works with the following types of products:
- Drill Parts
- Hammer Drill Parts
- Rotary Hammer Parts
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Broken selector knob on Bosch hammer drill
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
https://www.youtube.com/watch?v=39X7pzONOSU
Hammer setting on drill would not engage when knob was turned to the hammer setting.
Tool Type
Hammer Drill
Difficulty
Medium
Time
30-60 minutes
Tools Used
Screwdriver, Power Drill, T20 Torx
Parts Used
a. Disassemble bit holder
b. Turn setting selector knob 45 degrees past the hammer only setting by pressing in on the red button. Use a flat head screwdriver to pry out the selector knob.
c. Use T20 torx to remove screws the front section of the body.
d. Remove all of the internal components now exposed
i. Use a flat head screwdriver to remove the u-shaped lock holding the gears together
ii. Continue to remove all internal components.
e. Remove handle cover plate and detach handle from main body of drill
f. Remove screws and brushes to turn atmature
g. Remove armature by pulling main body out of rear plastic portion of the body
h. Use a screwdriver to pry the armature out of the center portion of the body. The bearing fits very tight.
I recommend de-greasing all of the internal gear components with mineral spirits
2.) Reassemble as the drill was taken apart.
a. Insert armature into main body part
b. Put rear plastic section with field over armature
c. Reinstall brushes
d. Reassemble handle
e. Reinstall gears
f. Apply plenty amounts of grease
g. Reinstall front portion of the body
h. Before replacing the selector knob, use a screwdriver to push the metal piece inside the selector knob hole towards the rear of the drill.
i. Press the selector knob back into the body, similar to how it was removed. 45 degrees beyond the hammer setting.
j. Reassemble the tool holder.
I recommend watching the following videos from ereplacementparts.com to take apart and reassemble the drill.
https://www.youtube.com/watch?v=39X7pzONOSU&t=17s
https://www.youtube.com/watch?v=LAq7w-6m2Zs
Selector switch was broken
Tool Type
Hammer Drill
Difficulty
Medium
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
Selector switch can be removed without disassembling the drill. You have to pry up slightly on switch and push the red button, rotate clockwise till tabs line up, switch will pop out.
Press new one in push down and turn counter clockwise it will drop it once it is turned push in red button while turning
Selector knob wore out
Tool Type
Hammer Drill
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
Bit holder & brushes shot; leaking front seal
Tool Type
Hammer Drill
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver, Pliers, Power Drill, knife
https://www.youtube.com/watch?v=39X7pzONOSU
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
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