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Repair Parts Home    Power Tool Parts    Bosch Parts    Bosch Hammer Drill Parts    Bosch 11224VSR (0611224739) Hammer Drill Parts
Bosch 11224VSR (0611224739) Hammer Drill bosch logo

 Bosch 11224VSR (0611224739) Hammer Drill Parts

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 Fig # Part # Img Part Name Availability Price Qty
01615430005
Grease Tube
In stock
16 available
 $7.16
11615108060
Motor Housing
In stock
2 available
 $13.46
22610004618
Field
In stock
2 available
 $21.32
3/601616610072
Fan
Ships in 7 - 9 business days
 $1.48
41617200066
On-Off Switch
In stock
25+ available
 $23.95
5/11900452012
End Splice
In stock
23 available
 $0.74
62600703018
Grommet
In stock
25+ available
 $1.85
72601035001
Cable Clip
In stock
2 available
 $1.22
92610906837
Manufacturer's Nameplate
Ships in 7 - 9 business days
 $2.81
102610908994
Reference Plate
Ships in 7 - 9 business days
 $2.81
131610905025
Deep-Groove Ball Bearing
In stock
21 available
 $7.16
141610905006
Deep-Groove Ball Bearing
In stock
2 available
 $8.25
161614336022
Brush Holder
In stock
7 available
 $2.19
171615132053
Handle
In stock
2 available
 $16.16
181610522009
Air-Deflector Ring
Ships in 7 - 9 business days
 $1.22
Fig #Part #ImgPart NameAvailabilityPrice
221616317602
Cylindrical Gear
In stock
2 available
 $10.72
261618700062
Hammer Piston
Ships in 7 - 9 business days
 $13.46
271618710057
Striker
In stock
1 available
 $9.48
281613124040
Striker Pin
In stock
3 available
 $4.06
291613105012
Piston Pin
In stock
2 available
 $2.81
311615510003
Protective Grille
In stock
2 available
 $0.74
341610508008
Protective Cap
In stock
5 available
 $1.48
351610206021
Rubber Ring
In stock
16 available
 $1.22
371610390017
Damping Bushing
In stock
8 available
 $4.06
381610102026
Supporting Disc
In stock
2 available
 $1.85
411610101011
Shim Ring
In stock
4 available
 $1.22
421610202015
Friction Bearing
Ships in 7 - 9 business days
 $2.19
431611098005
Tab Washer
Ships in 7 - 9 business days
 $2.19
481611016003
Holding Plate
In stock
3 available
 $1.48
491612026035
Switch Button
In stock
3 available
 $1.22
Fig #Part #ImgPart NameAvailabilityPrice
501617200062
Change-Over Switch
In stock
21 available
 $6.23
601610910073
Needle-Roller Bearing
In stock
2 available
 $9.48
612600910006
Needle Bushing
In stock
2 available
 $2.81
651610591016
Friction Bearing
In stock
2 available
 $1.85
701610283019
Radial-Lip-Type Oil Seal
In stock
3 available
 $6.23
711610290029
Scraper
In stock
3 available
 $1.85
721610210068
O-Ring
In stock
3 available
 $1.22
731610210187
O-Ring
In stock
7 available
 $1.22
741610210104
O-Ring
In stock
3 available
 $1.85
751610210105
O-Ring
In stock
8 available
 $1.85
761610210046
O-Ring
In stock
5 available
 $1.22
771610210106
O-Ring
In stock
2 available
 $1.85
801614634005
Compression Spring
Ships in 7 - 9 business days
 $1.22
811614611009
Compression Spring
In stock
2 available
 $1.22
831614611006
Compression Spring
In stock
2 available
 $2.81
Fig #Part #ImgPart NameAvailabilityPrice
851614601011
Retainer
In stock
2 available
 $1.22
861614601024
Retainer
In stock
2 available
 $1.22
872916540012
Retainer
In stock
2 available
 $1.85
881613200007
Roller
Ships in 7 - 9 business days
 $1.22
891903230013
Ball
In stock
18 available
 $0.74
901603435036
Self-Tapping Screw
In stock
3 available
 $1.22
1613435006
Sheet Metal Screw
In stock
11 available
 $0.74
1613435006
Sheet Metal Screw
In stock
11 available
 $0.74
922603490023
Torx Oval-Head Screw
Ships in 7 - 9 business days
 $0.74
932610914920
Sheet Metal Screw
In stock
2 available
 $0.74
942603435015
Sheet Metal Screw
In stock
2 available
 $1.22
952603410001
Cheese Head Screw
In stock
3 available
 $1.22
962912401018
Sheet Metal Screw
Ships in 7 - 9 business days
 $0.74
972603490022
Torx Oval-Head Screw
In stock
24 available
 $0.74
1001614448033
Connecting Cable
In stock
3 available
 $1.22
Fig #Part #ImgPart NameAvailabilityPrice
1011614448032
Connecting Cable
In stock
1 available
 $1.22
1021614448028
Connecting Cable L=310 mm
In stock
6 available
 $1.22
1031614448030
Connecting Cable
In stock
5 available
 $1.22
1041614448031
Connecting Cable
In stock
5 available
 $1.22
8032610003331
Armature
In stock
2 available
 $53.30
8053604460049
Power Cord
Backorder:
No ETA.
 $9.48
8111617014127
Carbon Brush Set
In stock
25+ available
 $8.25
8191615806093
Gear Housing
In stock
2 available
 $46.00
8201617000981
Intermediate Flange
In stock
1 available
 $21.32
1616490060
Guide Tube Assembly
In stock
2 available
 $76.30
1616490061
Ratchet Sleeve
In stock
1 available
 $57.22
8321612026037
Knob Assembly
In stock
25+ available
 $8.25
8331617000163
Bit Holder Assembly
In stock
25+ available
 $6.23
8651610591016
Friction Bearing
In stock
2 available
 $1.85
8881611104999
Nameplate
Ships in 7 - 9 business days
 $2.81
Fig #Part #ImgPart NameAvailabilityPrice
8261617000517
Toothed Shaft
In stock
2 available
 $64.23

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Drill Parts  Hammer Drill Parts

Repair Articles

How to Diagnose a Bad Power Cord or Switch
How to Diagnose a Bad Power Cord or Switch

This article outlines the basics of power tool and appliance electrical diagnosis. You can use a multimeter to test tool and appliance cords and switches, the two parts usually responsible for electri...
How to Remove a Stuck Drill Chuck
How to Remove a Stuck Drill Chuck

Broken gearboxes and sticky chuck screws can make removing a drill chuck difficult. This article explains the tricks you need to overcome these common repair setbacks.
How to Remove an Armature Bearing with a Vise
How to Remove an Armature Bearing with a Vise

This article explains one backup method for removing armature bearings when a bearing puller isn't available.
Drilling, Fastening, and Hammering Power Tools
Drilling, Fastening, and Hammering Power Tools

This article lists the major categories of drilling, fastening, and hammering tools, and explains the basic applications, types, and features of each.
Repair Stories
Symptom:
Worn FWD-REV Switch
Parts Used:
Part Number:
Repair Difficulty:
Easy
Time Spent Repairing:
Less than 15 minutes
Tools Used:
Entry Date:2013-12-13 16:18:16
4 of 8 customers found these instructions helpful
Mainly the forward and reverse switch was not working at times. Just decided to change both the trigger and the forward reverse switch.
Unscrew all eight screws that are on the handle and carefully open up the handle, make note where the wires are connected to the switch, and just unplug and plug back in to new switch. Replace the 1617200062 forward reverse switch. Get all the wires back where they are running and put the handle back together and tighten up all the screws and you are ready to use the tool again.
Did these repair instructions help you?
Discussion
Discussion for the Bosch 11224VSR (0611224739) Hammer Drill

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  • Subject:
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52678
Question: Diode In Switch

52678

This switch apparently contains a diode, curious to know what function it performs?
How do you remove the selector knob on the 11224 rotohammer
Tinkerdave
Reply: Bosch 11224 Selector Knob Remova...

Tinkerdave

Hi,
If I remember right the knob is keyed and you need to turn it all the way counter clockwise then push the red button in and turn it further counter clockwise and the knob will line up with a keyed slot and you can pull it out.Hope this helps.Good luck.
Tinker
gwink
Question: On-off Switch

gwink

How do you test the switch to see if it is working properly with a multimeter
WJA
Reply: On-off Switch

WJA

Hello gwink,

We have prepared an article and video on How to Diagnose a Bad Power Cord or Switch. I hope this will help you with your question on testing a switch with a multimeter.

-WJA
I've seen the vidios on Taking apart and putting together an 11224VSR business end but can find no intel on the brushes. Can I remove them by opening the handle or do I have to pull the armature?
WJA
Reply: How To Change Brushes On A Bosch...

WJA

Hello beubeu,

If you take the handle off you will be able to replace your 1617014127 Brush Set with no problem.

Good luck,
-WJA
beubeu
Reply: How To Change Brushes On A Bosch...

beubeu

Hey hey WJA,
Thanks ,was not sure if that was how you got to the brushes. Some times it's easier to ask that just tear into it .
See ya,
David
yadira24
Question: Bosch 11224vsr

yadira24

I broke a wire that runs from the on/off button into the machine and i can find how to remove the broken piece to replace it.
Tinkerdave
Reply: Bosch 11224vsr

Tinkerdave

Hi yadira24,
Give me the part number of the wire thats broken.
Tinker
yadira24
Reply: Bosch 11224vsr

yadira24

The wire part number is 1614448030.
Tinkerdave
Reply: Bosch 11224vsr

Tinkerdave

Hi yadira24,
The long male connector plugs in to the link removed on where the wire broke you might be able to take a small pair of needle nose pliers and pull it out of the field which has if I remember right a female connector molded into it. I use a small set of medical forcepts (if I spelled that right) to reach in and grab it and pull the connector out of the field.If this fails then generally you will have to remove the field to get it out.Hope this helps.Good luck.
Tinker
yadira24
Reply: Bosch 11224vsr

yadira24

Thanks a million tinkerdave will try that.
How to remove striker pin from guide tube from bosch 11224vsr hammer drill
Tinkerdave
Reply: How To Remove Striker Pin From G...

Tinkerdave

Hi jetsetc5,
You will need to remove Retainer Part Number: 1614601024 ref:86 from inside the barrel.If you look closely at the holes in the barrel you can see the ring.You will need to push in and up on the ring to remove it.Hope this helps.Good luck.
Tinker
jakejakezack
Question: Removing Knob Assy

jakejakezack

Is there any tricks to getting a broken knob assembly out?
plinio
Question: Switching Spring Assy.

plinio

I am having some problems reinstalling the switching
Evan Robinson
Question: Switching Spring Assembling

Evan Robinson

I am having some problems reinstalling the switching element and spring in my Bosch 11224VSR. Fell out when taking it apart. I can not seem to get it to work when reinstalling it. would love to see how it goes in the assembling phase.
plinio
Reply: Switching Spring Assembling

plinio

I am having some problems reinstalling the spring
Pete
Question: Chuck Key

Pete

Looking to replace the chuck key for my Bosch 11224VSR, it no longer holds the drill bit in place. What part # is it and how would I go about replacing it?
thomas lawson
Question: No Power When Drilling Down

thomas lawson

I have a 11224RSV. As I was drilling vertically down, at once it acted as if it had no power. No burning smell. However, when held in position as to drill over head it works. What could my problem be?

Thanks Thom
Dwight
Question: No Power

Dwight

My 11224vsr hammer drill was working fine and all of a sudden it started to lose power. The more I try to use it the less power it seems to have. How do I fix this problem?
calote
Reply: No Power

calote

the switch has a circuit inside that controls the speed when you push it all the way in; it make a direct connection and it gives full power changing. it can solve the problem
william
Question: 11224RSV

william

My Bulldog was hammering poorly so I replaced the "O" ring. It is still hammering poorly. Do I need to replace the Hammer Piston?
Teezy
Reply: 11224RSV

Teezy

Check the piston, and sleeve. Does it have any serious wear marks? If so, replace. I would put a whole service pack in it......all o-rings and grease. Not just the stiker o-ring.
Kris
Question: Roto Not Working?

Kris

I have a Bosch Bulldog 11224VSR and the drill still works but it won't spin. Any ideas on what part could have broken and if this is a common problem?
Teezy
Reply: Roto Not Working?

Teezy

Part number 821 has key pins on them.....I have seen them go bad. That will cause it not to spin. Also, check your knob adjuster....make sure it is activating modes.
frank
Question: Hammer Drill

frank

My model #11224 just stopped working. No power. Dead. What are common things that may cause this? Thanks.
tim
Reply: Hammer Drill

tim

The brushes wore out on mine. You can sand the commutator but I want to turn the armature on my lathe. I haven't figured out how to take it apart.
Teezy
Reply: Hammer Drill

Teezy

I would say power cord #1, brushes #2, switch #3.
Claudio
Question: Bosch 11224vsr

Claudio

Hi, I have two problems with this drill
-Hammer very weak
-when drilling slips too easily (torque weak)
jose
Question: Knob Assembly

jose

How do I replace the knob assembly?
Teezy
Reply: Knob Assembly

Teezy

Turn it all the way to the right.....till hammer and drill. Press the red button in, the knob should then move a little bit more, past the hammer drill mode. Once it hits the max pull the knob straight up. Booya!
chuck
Question: 11224vsr Does Not Hammer?!

chuck

Hi, my bulldog drills only... does not chip or hammer drill well?! Please help
391561
Question: Ratchet Sleeve Removal Help

jhavard

How do you remove the assembly. 1616490060 is the part number. I cant seem to figure out how to get it apart.
Also when I put it back together how do you line up the switch with the catch on the shaft?
Thanks in advance.
Tinkerdave
Reply: Ratchet Sleeve Removal Help

Tinkerdave

When you say "How do you remove the assembly" Do you mean remove the assembly from the tool?or remove the striker assembly from 1616490060?
Tinker
torquedude
Question: Bosch 11224 VSR Hammer Drill

torquedude

Hi, I found link removed videos on assemby and disassembly of the Bosch 11224 VSR Hammer Drill.

Disassemble
link removed - Taking Apart the Bosch 11224VSR & 11228VSR Hammer Drills

Assemble
link removed - Putting Together the Bosch 11224VSR & 11228VSR Hammer Drills

Seems pretty easy except...

The 1st step is to remove the rubber cover and I removed the rubber cover without any diffucuties. Then the plastic sleeve is supposed to come right off. Well, on my drill it doesn't.

I've tried rotating it in case there is a keyed slot or somethnig to retain it. I've tried to pull it and pry it off but it doesn't come off. Could it be my drill is 12 years or more (Hardly used) and the sleeve is retained in some other way?

Or could it be related to the problem I need to disassemble the drill? I lent my drill out and specifically told the person several times that he needs to buy the right size HAMMER DRILL BIT and not a masonary drill bit. Well, of course he didn't listen or just saw the price of a hammer drill bit and figured no problem. Well, there is a problem now as the masonary bit is stuck. I suspect the end is mushroomed or something.

Could this stuck bit cause the plastic sleeve not to come off? I can slide the sleeve down (compress the spring) as if installing a bit. Any ideas if something is damaged inside?

Thanks
d
ademco
Question: Bosch 11224VSR Hammer Drill

ademco

How do I replace the knob assembly? Thanks.
RobVG
Question: Bosch 11224VSR Hammerdrill

RobVG

Our hammer drill started leaking oil out motor housing. The guys ran it and it got hot and also lost some of it's power.

I was wondering what the likely cause is and what parts it might take to fix it?

Thanks

Rob
UtahAV
Reply: Bosch 11224VSR Hammerdrill

UtahAV

Hi Rob,

I'll start with the leaking oil issue. The tool is lubricated with a heavy grease. When the tool is worked too hard and overheats the grease breaks down into an oil. Since the tool wasn't designed to be lubricated by oil there are no seals to keep oil in. To make the repair you will need to open up the gearbox, clean out the old grease and replace with new grease. The grease is part #1615430001. You will need about one and a half tubes.

The loss of power could be caused by a couple of things. Sometimes the variable speed switches like your rotary hammer uses will fail. The upper end of the switch will go bad which limits the top speed of the tool. The switch is part #1617200066 The other cause would be a bad armature. Inspect the armature for melted insulation or damage to the bars on the commutator. A bad armature will many times have a distinct bad odor. You will want to check the field for any damage as well. The armature is part #1614010112 and the field is part #1614220105.

Good luck with your repair!

-UtahAV
-Mark
RobVG
Reply: Bosch 11224VSR Hammerdrill

RobVG

Awesome!

Thank you Mark
mrfixit1229
Question: 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
Reply: Bosch Oil 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
Reply: Bosch Oil Leak

mrfixit1229

Thanks for that info I will definitly change the seal.
Straightshooter
Reply: Bosch Oil Leak

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
Reply: Bosch Oil Leak

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.
[FONT="Courier New]Hi...

I own a Bosch Bulldog 11224VSR rotary hammer that has very weak blows. I opened it and a quick inspection tells me the the general mechanichal is excellent for a machine that has worked A LOT.

But i also saw that the striker that travels inside the striker piston was quite deep inside the piston (which is in fact a cylinder). I took out the striker and then put it back inside the cylinder so the green O-ring was just passed the side vent hole in the cylinder. I then pushed it hard to check the air tightness and SURPRISE ! I HEARD A FAST AIR LEAK (PFFFT !). I removed the striker and inspected the cylinder's inside to see a circular groove machined in the cylinder. So, if i push the striker far enough to allow the O-ring to access this groove, i lose all my air pressure.

My questions:

1 - Where is the stryker supposed to be in the cylinder ? In front of the
machined groove or behind it ?

2 - If it's behind the groove what does cause my problem ? I inspected both the striker
and the striker pin and i found no signs of wear, no chips, no cracks.

3 - Is my problem with the green O-ring ? And what kind of grease should i use to
get sure i won't have any air leaks in the cylinder ?

Thanks for your attention !

Bosch 11224VSR Parts List and Diagram - (0611224739) : eReplacementparts.com

Edit: I saw that the're service packs for Bosch rotary hammers on eReplacement_parts but couldn't find the one for mine. Can someone help ?
[/FONT]
cmoorejack
Reply: ...Bosch 11224VSC Weak Blows.

cmoorejack

Hey Martel,
1. The striker stays ahead of the groove...
2. The problem is usually caused by a worn o-ring, loss of lubrication..
3. You will need to replace the o-ring..the striker needs to move somewhat back and forth in the chamber to build up a pneumatic force to "strike" against the striker pin..I use a lite air tool oil to lube the o-ring..you really don't want a build up of oil or grease in the chamber and some air has to escape so the striker can move..
as far as the grease required for the gearbox..part # 1-615-430-005 use the whole tube..
parts available at ereplacementparts.com
* not sure if there is a service pack for this model avail..none listed at Bosch website*
Hope this is helpful..:)
Craig
Martel
Reply: ...Bosch 11224VSC Weak Blows.

Martel

[QUOTE=cmoorejack;3095]
..the striker needs to move somewhat back and forth in the chamber to build up a pneumatic force to "strike" against the striker pin..I use a lite air tool oil to lube the o-ring....
as far as the grease required for the gearbox..part # 1-615-430-005 use the whole tube..
parts available at ereplacementparts.com
Hope this is helpful..:)
Craig"

Thanks Cmoorejack ! :) :) :) That was helpful ! I went to a hardware shop and bought a bottle of pneumatic tool oil and put a few drops on all of the O-rings, inside the piston's rear portion (this way, the oil will remain inside the piston/cylinder) and also around the piston/inside the sleeve assembly.

I tested the hammer drill with a 7/8 inch carbide bit in hard rock and it works !! Solid deafening blows !

But i won't take chances, i'll order a set of O-rings and a tube of grease.

BTW, anyone, what do you think of synthetic grease (the red stuff that smells awful) ? Also, do i use the same grease for the front slow-revving parts and the rear high RPM input gearbox ?

Thanks !
dave7227
Question: Bosch 11224vsr Repair

dave7227

I have a Bosch 11224vsr hammer drill that has a broken chuck. The SDS bits will not lock in or turn when the motor is engaged. I have not been able to figure out how to take the chuck apart so I can see what is wrong. Does anyone know how to disassemble this drill?
cmoorejack
Reply: Bosch 11224vsr Repair

cmoorejack

Hey dave7227,
You will have to pry off the rubber cap [#34] and then remove the retainer [#87] [snap ring pliers]..then everything will come apart...the replacement part # is 1-617-000-163..it comes with everything thing you need in kit form...avail at ereplacementparts.com..be sure and check out a parts breakdown for further info...hope this helps..:)
Craig
Odie
Reply: Bosch 11224vsr Repair

Odie

dave7227, we made a video on how to take the Bosch 11224VSR Hammer Drill apart. It needs be edited, but will be posted shortly.

Odie
Odie
Reply: Bosch 11224vsr Repair

Odie

Here is the video:

link removed to Disassemble the Bosch 11224VSR & 11228VSR Hammer Drills
Wayne in Maine
Question: Bosch 11224VSR Hammer Drill Main...

Wayne in Maine

Does anyone know the correct oil or grease for this hammer drill? I've used this tool extensively and now, when it heats up, the grease or oil is dripping down the tool into my work. I'm sure the seal is probably defective as well, but want to make sure the tool has enough lubrication.
Anyone? Many thanks.
Wayne in Maine
cmoorejack
Reply: Bosch 11224VSR Hammer Drill Main...

cmoorejack

Hey Wayne,
The tube of grease recommended by bosch is part # 1-615-430-005..45 ml [you can order it from ER]
It is a purple grease and looks good enough to eat..but..uh..just put it in your hammer drill..
[the grease is breaking down in your tool and leaking out as oil..your seal is still probably ok..]
p.s. you will have to disassemble the nose part of your tool to take the front part off to get inside the gearbox..
hope this is helpful..
Craig
Geneva Tool Repair
Wayne in Maine
Reply: Bosch 11224VSR Hammer Drill Main...

Wayne in Maine

Thank you Craig, for your response.
I knew someone here had the answer. Since it's grease and not oil, I'll be ok for a while, but I'll order some of that purple lube.
I wonder if they made it from that darned purple dinosaur?
Best,
Wayne in Maine
Drumguy
Reply: Bosch 11224VSR Hammer Drill Main...

Drumguy

i work for a company and all we use is bosch hammer drills. i have been to trying to repair some tools that go bad so we don't have to replace them all the time. i have a bosch 11224vsr that dose not run. anything i can check. i already checked the switch and that is ok. what else could be the problem. also i have a bosch 11222evs that runs but seems to lose power after just a little use. if anyone can help me with these 2 it would be great thanks.
Wayne in Maine
Reply: Bosch 11224VSR Hammer Drill Main...

Wayne in Maine

Drumguy:
Here are some things you should check:
1) Is there continuity (use a meter) between each prong of the plug and the wire at the inside of the unit? (Sometimes the wire breaks though it looks "fine" outside.)
2) Are the brushes making good contact with the armature? (that can be the cause of it "losing power" or not starting to begin with) the armature should not be "burnt" but shiny
3) with the motor disconnected, does the unit gearbox turn freely? Too much drag or friction from a worn part or bearing can keep the motor from starting, or cause it to trip out almost immediately.

Hope that helps,
Wayne in Maine
rawlands
Question: Brushes

rawlands

Need brushes for a bosch hammer drill. The number on the brushes I took out was p44. The repair page shows a d45. will these work? I cant even read the model # on the drill, so this is all the info I have. The parts list I was looking at was from a 11224vsr.
S. T. Wis.
Review: Bosch - 11224VSR
1 star
S. T. Wis.
This drill is compact, powerfull and easy to use but all these drills have a defect, the gear on the armature can't take the tork, this is the first part to go bad in this unit, I have 4 units in my shop with this problem, the rest of the unit is fine but I would have to replace the armature in all 4 units , I feel this a warrenty problem and i'm not sure if I will purchase any of these units in the future. With this type of problem I will go to a different Brand.
plinio
Reply: Bosch - 11224VSR

plinio

what was your response to this question?
Kynar
Reply: Bosch - 11224VSR

Kynar

The new bosch bulldogs have a larger pinion on the armature to put up with the torque this unit puts out. They have also beefed up the gear sleeve. I have had no problems with the new units stripping these gears.
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