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Bosch 11304 (0611304139) Demolition Hammer Parts

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Fig #	Part #	Img	Part Name	Availability	Price	Qty
4	1615805068		Bearing Housing	Ships in 4 - 7 business days	$58.30
5	1610900015		Deep-Groove Ball Bearing	Ships in 4 - 7 business days	$19.31
6	1615500214		Screw Plug	Ships in 4 - 7 business days	$17.16
7	1615108104		Insulating Housing	Ships in 4 - 7 business days	$23.76
8	1616610091		Fan	Ships in 4 - 7 business days	$13.48
9	1613313000		Hexagon Nut	Ships in 4 - 7 business days	$1.98
11	1610108013		Felt Washer	Ships in 4 - 7 business days	$1.32
12	1610102616		Supporting Disc	Ships in 4 - 7 business days	$1.98
15	1610910091		Needle-Roller Bearing	Ships in 4 - 7 business days	$26.07
19	1616110033		Eccentric Shaft	Ships in 4 - 7 business days	$132.50
21	1616318009		Cylindrical Gear	Ships in 4 - 7 business days	$48.40
22	1616328036		Cylindrical Gear	Ships in 4 - 7 business days	$88.00
23	1610913005		Needle-Roller Assembly	Ships in 4 - 7 business days	$5.61
24	1615500323		Gear Cover	Ships in 4 - 7 business days	$100.00
25	1612001040		Connecting Rod	Ships in 4 - 7 business days	$77.28
Fig #	Part #	Img	Part Name	Availability	Price
26	1610910092		Needle-Roller Bearing	Ships in 4 - 7 business days	$23.76
27	1610210033		O-Ring	Ships in 4 - 7 business days	$1.32
28	1618700043		Hammer Piston	Ships in 4 - 7 business days	$265.00
30	1614601039		Retainer	Ships in 4 - 7 business days	$2.86
32	1900210156		O-Ring	Ships in 4 - 7 business days	$6.44
33	3613101500		Piston Pin	Ships in 4 - 7 business days	$4.84
34	1618710039		Striker	Ships in 4 - 7 business days	$41.80
35	1610209007		O-Ring	Ships in 4 - 7 business days	$6.44
36	1900210166		O-Ring	Ships in 4 - 7 business days	$3.63
37	1615806029		Guide Tube	Ships in 4 - 7 business days	$242.00
38	1610220009		Guide Bushing	Ships in 4 - 7 business days	$17.16
39	1614619005		Compression Spring	Ships in 4 - 7 business days	$4.84
40	1615700017		Intermediate Flange	Ships in 4 - 7 business days	$58.30
41	1610210008		O-Ring	Ships in 4 - 7 business days	$4.24
42	1613123003		Striker Pin	Ships in 4 - 7 business days	$41.80
Fig #	Part #	Img	Part Name	Availability	Price
44	1618045026		Retaining Bracket	In stock 2 available	$155.00
45	1613103004		Locking Bolt	Ships in 4 - 7 business days	$37.84
46	2917760187		Clamping Sleeve	Ships in 4 - 7 business days	$1.32
47	1900210172		O-Ring	Ships in 4 - 7 business days	$7.37
48	1610516007		Locking Cover	Ships in 4 - 7 business days	$13.48
49	1610707000		Insulation Tubing	Ships in 4 - 7 business days	$1.10
50	3600421500		Protection Sleeve	Ships in 4 - 7 business days	$1.65
51	1610703019		Grommet	Ships in 4 - 7 business days	$3.63
52	1615500324		Fan Cover	Ships in 4 - 7 business days	$58.30
53	1615500325		Hood	In stock 2 available	$33.39
55	3604460507		Power Cord	In stock 2 available	$30.03
55/1	1900452003		End Splice	Ships in 4 - 7 business days	$0.66
56	1610703011		Grommet	Ships in 4 - 7 business days	$12.10
57	1615500212		Switch Cover	Ships in 4 - 7 business days	$7.37
58	1617200108		On-Off Switch	In stock 3 available	$58.30
Fig #	Part #	Img	Part Name	Availability	Price
59	1615700041		Intermediate Plate	Ships in 4 - 7 business days	$77.28
60	1615500330		Insulating Cap	Ships in 4 - 7 business days	$2.86
62	1612026011		Switch-Pawl	Ships in 4 - 7 business days	$4.84
63	1615132010		Handle	In stock 1 available	$19.31
64	1616334000		Rubber Torsion-Bar	Ships in 4 - 7 business days	$21.62
65	1613060005		Toothed Shaft	In stock 2 available	$48.40
67	2916660023		C-Clip	Ships in 4 - 7 business days	$2.86
68	1613465001		Rubber Buffer	Ships in 4 - 7 business days	$4.24
69	1615700042		Intermediate Plate	In stock 1 available	$100.00
70	1615132011		Handle	Ships in 4 - 7 business days	$19.31
71	161111A004		Nameplate	Ships in 4 - 7 business days	$2.48
73	1603435036		Self-Tapping Screw	Ships in 4 - 7 business days	$1.10
74	2916160009		Disc Spring	In stock 6 available	$2.48
75	3614640501		Compression Spring	In stock 5 available	$5.61
76	3611034500		Fastening Plate	Ships in 4 - 7 business days	$2.86
Fig #	Part #	Img	Part Name	Availability	Price
84	1611099003		Insulating Plate	Ships in 4 - 7 business days	$2.48
85	1614336045		Brush Holder	Ships in 4 - 7 business days	$26.07
86	1610300033		Axle Pin	Ships in 4 - 7 business days	$15.73
87	1610900027		Deep-Groove Ball Bearing	Ships in 4 - 7 business days	$21.62
88	1610283016		Shaft Sealing Ring	Ships in 4 - 7 business days	$7.37
89	1610009008		Insulating Plate	Ships in 4 - 7 business days	$1.98
94	1611015021		Sealing Plate	Ships in 4 - 7 business days	$1.65
95	1614431030		Connecting Cable	Ships in 4 - 7 business days	$4.84
96	1614448037		Connecting Cable	Ships in 4 - 7 business days	$5.61
97	2915011007		Hexagon Nut	Ships in 4 - 7 business days	$0.66
99	3613313500		Hexagon Nut	Ships in 4 - 7 business days	$1.98
102	2910211025		Sheet Metal Screw	Ships in 4 - 7 business days	$0.66
104	2910141201		Hex-Socket-Head Cap Screw	Ships in 4 - 7 business days	$1.65
105	2914551188		Microencapsulated Screw	Ships in 4 - 7 business days	$0.66
106	2914551189		Microencapsulated Screw	Ships in 4 - 7 business days	$0.66
Fig #	Part #	Img	Part Name	Availability	Price
107	2910141242		Hex-Socket-Head Cap Screw	Ships in 4 - 7 business days	$1.32
108	2603490023		Torx Oval-Head Screw	Ships in 4 - 7 business days	$0.66
109	2910141248		Hex-Socket-Head Cap Screw	Ships in 4 - 7 business days	$1.32
110	2910141356		Hex-Socket-Head Cap Screw	Ships in 4 - 7 business days	$1.65
111	2914550034		Microencapsulated Screw	In stock 6 available	$2.48
112	2910211236		Sheet Metal Screw	Ships in 4 - 7 business days	$0.66
114	2917721034		Round-Head Grooved Pin	Ships in 4 - 7 business days	$0.66
119	1601110058		Reference Plate	Ships in 4 - 7 business days	$1.10
131	1601110618		Reference Plate Obsolete - Not Available	Discontinued	$0.00	N/A
801	1617000851		Motor Housing	Ships in 4 - 7 business days	$625.00
802	1614220157		Field	Ships in 4 - 7 business days	$155.00
803	1614011092		Armature	In stock 2 available	$302.00
813	1610910035		Needle-Roller Bearing	Ships in 4 - 7 business days	$33.39
820	1610910094		Needle Bearing	Ships in 4 - 7 business days	$21.62
843	1617000428		Tool Holder	Ships in 4 - 7 business days	$376.00
Fig #	Part #	Img	Part Name	Availability	Price
844	1618045026		Retaining Bracket	In stock 2 available	$155.00
854	1617000858		Switch Housing	Ships in 4 - 7 business days	$30.03
858	1610591001		Protective Cap	Ships in 4 - 7 business days	$6.44
859	2910091118		Slotted Pan-Head Screw	Ships in 4 - 7 business days	$0.66
861	1617000429		Mounting Plate	Ships in 4 - 7 business days	$9.68
879	1614652001		Spiral Spring	Ships in 4 - 7 business days	$2.48
881	2912771120		Torx Oval-Head Screw	Ships in 4 - 7 business days	$0.66
882	2916699130		Spring Lock Washer Obsolete - Not Available	Discontinued	$0.00	N/A
883	1617000425		Carbon-Brush Set	In stock 1 available	$21.62
884	1611099003		Insulating Plate	Ships in 4 - 7 business days	$2.48
890	1617000848		Un. Flange-Mtd. Motor	Ships in 4 - 7 business days	$414.00
895	1615430016		Box	Ships in 4 - 7 business days	$88.00
895	1615430015		Grease	No estimated release date	$30.03
897	1617000426		Service Pack	In stock 3 available	$58.30

Drill Parts

Demolition Hammer Parts

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Microencapsulated Screw $2.48	Carbon-Brush Set $21.62
Compression Spring $5.61	Handle $19.31
Handle $19.31	Disc Spring $2.48
Hex-Socket-Head Cap Screw $1.65	On-Off Switch $58.30

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Discussion

Discussion for the Bosch 11304 (0611304139) Demolition Hammer

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Question: Replace Motor

jonstiles

How do I get the old motor out of a brute breaker

Question: On Of Swuitch

adia3597

how to reconect on-of switch

Question: Replace Power Cord

rericksac

How to replace power cord on bosh jack hammer

Question: Striker Stuck

775260

On a bosch brute the striker seems to be jammed in the piston. No evident damage.any suggestions?

Question: Bosch 11304-no Data Tag-034 Or 1...

TedGeneralRental

As the title line says...I am trying to identify my hammer without a data tag. I need a service pack, but don't know which one it is.

Reply: Bosch 11304-no Data Tag-034 Or 1...

WJA

Hello TedGeneralRental,

The motor assembly between the 034 and 139 is one of the main differences, but that is a little difficult to tell without disassembling the tool. There is one difference on the outside of the tool which will tell them apart though. It is the guide tube ( item #37 on both the part diagrams). By looking at both diagrams you will be able see the differences, and hopefully identify your hammer.

Hope this helps,
WJA

Question: Piston

Guy

Does the piston slide in the cylinder?

Question: Substitute For Obsolete Fan #161...

Jim Hanks

We have several (18) model 11304-034 demo hammers. Is there a way to sub parts from a 139? We do have to order armatures and brush holders for some of these units anyway so a change of more than the fan would not be a problem if it will work. We were given the direct number for Bosch and they said all we had to do was change the armature, but if you check the part number on these two units it is the same. I would appreciate a call if possible at 507-461-0758. Thanks

Question: Change Brushes

joe

How do you repair a carbon brush set?

Reply: Change Brushes

RAFAEL

BECAUSE THE MACHINE IS DAD

Question: Hammering

jordie

My hammer will not put the poundage to the ground unless I push extremely hard. Is there something worn out inside?

Question: Bosch Jack Hammer Thermal Switch

Mike

Does the jack hammer have a protective thermal switch, and if so where is it located. Also, what is the part featured in the drawing on the top right above #106 that doesn't have a number? Thanks Mike

Reply: Bosch Jack Hammer Thermal Switch

paul

That is not a part. It is an electrical schematic showing the motor, brushes, & switch.

Reply: Bosch Jack Hammer Thermal Switch

Dennis

The part above #106 looks like the leads to the switch. It does have an M; meaning motor.

Question: Cranking Sound..

mynor lima

Hi, is it normal that the hammer emits a cranking sound when it works? There is not heat or metal dust in the mechanic parts. THANKS.

Question: Shaft Motor Bushing

mynor lima

Hi, it's hard for me explain in English but I will try it. I wonder if in the end shaft of the rotor of the motor, it uses a bearing or a bushing, because I've tried to repair it with another bushing but that just worked one day. In the manual it doesn't show if it's special bearing or a bushing. THANKS

Question: Install Conecting Rod

scott

I noticed that the connecting rod is not the same on both sides. How do you determine which way it must face or does it make a difference?

Reply: Install Conecting Rod

RICK8809

connect the cylinder & connecting rod w/ wrist pin,slip connecting rod over crank pin from either side to see which way the cylinder lines up w/ the hole best (centered). that's it!

Question: Greasing A Brute

will

Where can I get a lube chart for a Bosch BRUTE showing the types of grease and oils and where to put them? Thanks

Question: Changing Armatures

Mark

Hi I'm replacing a damaged armature in a 11304 brute is there any special tricks or additional work that needs to be done? Thanks Mark

Reply: Changing Armatures

tony

Hi Mark,
Try using a #10awg cord. You wont burn out any more armatures.

Reply: Changing Armatures

Tony K

Always replace the carbon brushes when replacing an armature.

Question: 11304 Demo Hammer

james

Where and how do I add oil? It was left up side down in moving and I could see that it lost a lot of oil.

Question: Bosch Brute Hammer

david

One of three micro screws is crossthread and keeps backing out.

Reply: Bosch Brute Hammer

Dennis

You might want to try a heli-coil for that hole.

Question: Bosch 11304 Braker Repair

dieselMEN

I have a bosch 11304 Hammer. it seems to have lost its punch the motor and piston rod seen to work fine. I looked at the striker and piston there is no visible damage. although there is Grease every where. what give the striker power? is the grease supposed to be behind the striker in the cylinder? is the grease causing a suction, not allowing the striker to move freely?

thanks for any info
Mark

Reply: Bosch 11304 Braker Repair

Tinkerdave

Mark, The piston causes high pressure in the cylinder forcing a slug down the cylinder which hit the striker pin which hits the bit.The striker pin has two o-rings and moves back and forth in short strokes.This most likely where your problem lies.You have grease leaking from the transfer case and this is why it coming out the link removed a service kit and replace the grease but don't replace the striker o-rings unless their damaged as replacement o-rings will have to go through a break in run of a couple of hours to get the hammer action working good. Hope this helps.

Reply: Bosch 11304 Braker Repair

dieselMEN

Thanks for your response, I have ordered the service kit and I am uncertain to where to put the grease. I currently have grease in the motor housing, (connecting rod area) the hammer piston (inside and out) and the Guide tube. I will clean the old grease out as best as possible.
What is the procedure for replacing the new grease?
Do I just squeeze the content of the tube in the motor housing (connecting rod area) and reassemble?

Is the o-ring you say not to replace #32 of the internal flange?
Bosch 11304 Parts List and Diagram - (0611304034) : eReplacementParts.com

Any help will is appreciated
Thanks
Mark

Reply: Bosch 11304 Braker Repair

Tinkerdave

Hi Mark.No you don't want to replace # 1610210033 ref #27. and yes you put the grease in the crankcase where the connecting rod is.the kit I believe gives you instructions on most of that. Hope that helps.

Question: Bosch 11304 Jack Hammer

klhwarf

Was using the brute electric jack hammer and it quit impacting at the bit. Have owned since new and has

Reply: Bosch 11304 Jack Hammer

cmoorejack

Hey klhwarf.
Its probably not anything you have done..it may have developed a dry pocket where the striker moves[or doesn't move] Time for a service pack or at lease a re-lube of the striker and chamber..the service pack contains everything you will need to service your tool..just match up your model #...either a 11304 039 or a 11304 139..
parts avail at eReplacementParts.com : Power Tool Parts and Tool Repair
hope this helps..:)
cmoorejack

Reply: Bosch 11304 Jack Hammer

ronnie callahan

is there a tool (hone) to use on the piston tube when the bore is out of round!

Reply: Bosch 11304 Jack Hammer

Dale

Don't use a hone on this tool. Clean the piston and stiker really good. Put a fine film of bosch grease on both. go to youtube and type in ereplacementparts and there is a short video.

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