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Hitachi H60MRV Sds Max Demo Hammer - Page 2 Questions & Answers
11241 not hammering
- suggestion 11241-EVS is not a breaker hammer but a rotary hammer but has almost the same good quality as a breaker hammer because its a reasonable solid product with a liquid lubrication.
Solvent clean the front drill and chisel holder in the spindle thoroughly to control before buying a maintenance parts kit , decision to take the step ONLY IF............ the spindle (most expensive part) is smooth has no rips or is worn but first inpriority check in advance whether the three SDS driving lanes for the bit internal closure and drill -drive of the drive spindle =pos 25 in the drawing is still be adequate enough a 1.5 mm and round tops is critical. and below that its not worth to repair. because the working hours on it have been achieved.
Otherwise If its looked like the 3 lanes inside the spindle all three are always the same size about 2.5 mm thick and are square topped the spindle (and the other parts are must have to be in good condition to service. buy the maintenance kit its in the drawing to find in the parts list pos 897 and oil partslist pos (898 or 895) for if you have more then one rotary hammer to service.
Most cause its conclusive for only this parts but a priority is to replace ALL pieces of the service parts. even the carbon brushes
look that after replace the green ring on pos 856 that this hammer piston connecting rod is correct mounted on the right side again with the 4 little stips on the (bearing) outside thats coming downsite on the eccentric cog wheel for a smooth working for the plastic plain bearing on the metal connecting rod, At the slightest mistake in the parts and lubrication breaks this connecting rod soon.
The striker pin has great priority to clean and control that part against leaking a retainer ring should be removed by use 1 or 2 little screw driver(s) in the small holes on the side of the spindle can be seen this ring. if the ring comes loose tilt the ring cross with a long screwdriver pull it out with a nose pliers. to get the (striker pin or impact bold (the part thats beat the chisel )by other brands named the special ring has exterior little orings inside becarefull and look first inspected how its build before there will one come out to push it again inside if one will come out.
There is also a new retainer ring for the parts around the striker pin in the delivered maintenace kit
By replace the several parts beware on one ring not to forget a very important ring pos 104 to replace it and mount it with some sillicon grease in the right groove before in order to prevent a disappointment of leaking oil because if leaking oil /air after a while the parts will dried out in a very short time and will burned out soon.
There is one problem rised between me and this kind of BOSCH powertools about the ring(s) in pos 102 there are 2 shim (bearing) rings pos 102 to find by the service handling and what you will know from me is that you must look that there are two shims to find instead of one because of to get a correct backlash measure between 0.08 and 0.22 that's the right tolerance to adjust the shim bearing rings to have some tools ONLY to know how to handle if they are forget the second shim ring in your model if you are going to make service if you only have one shim ring because there where failures in the drawing by Bosch on this and to find more about the use in some other comparable bosch models like gbh4-32dfr or 4-40de that will have in order to adapt the backlash adjusting have a failure if only one ring is used.
More on fixya to find about the pos 102 position rings by Bosch in several models.
Hoping that YOU HAVE 2 rings of pos 102 you have nothing to do to concern on let it be as it is. only if one ring you should hear the difference in rotary position , it should not be turn smooth.
But if one shim ring is used only like in the drawing it must be a factory drawing failure.
look on the partslist by the model you have it shows there are 2 different rings to buy or order of the same pos 102 for it they sell you can buy if you do not believe on my story its so imortant to adjust the gears for the backlash if only one ring is in this machine you will have to order 4 new pieces 2 of the 2 neccesary to adjust know to make the backlash rather on 0,08 mm then 0,22 mm as soon you have adjust because otherwise the machine will make the rotary gear worn in a to short time.
If its has only one shim ring and its have making already a very bad noise in the rotary drive position replace only if its worth all to gether to service also pos 51 and pos 860
Bosch 11241EVS 0611241739 Rotary Hammer Parts
12/18/2016 8:39:39 PM •
Hammering
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2,411 views • 0 helpful votes
My jackhammer stoped hammering please help
if the internal motor still runs , but the chisel doesn't move , this is a sure sign that the drive pin has broken off , un plug and remove lower part of tool , there just after the motor shaft is a flat gear looking item , it has a pin sticking out of it bottom side , except I bet yours doesn't have it sticking out any longer , this pin will need replaced , this occurs when operator gets tool stuck in hole and pulls back while running it , ive changed a few in years past
8/5/2016 7:59:40 PM •
Hammering
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1,622 views • 0 helpful votes
Looking for a replacement trigger switch
Steve, RE POST make model # and your complete question, so all at Fixya can answer your question effectively.
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3/22/2016 11:47:16 AM •
Hammering
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1,242 views • 0 helpful votes
WHat kind of oil is required. Rotella #40 is not immediately available in Austalia. I suspect a standard30/40 oil may be ok. PLs advise.
No, that will burn you seals and o-rings in a short time
15w40 or that kind of Oil will go on like syrup no then you go for a new service kit of seals and rings .
But the important things that are quickly to see .
If its a heavy old large hammer 10 kilo or more with a heavy battle piece then use a hammer fat(grease)only if there is no oil fill glass present. in place, but if it looks that oil has seated and the parts are made for high speed, use at least a zinc-free hydraulic oil Because of the heat dissipation, which is really high because of the internal air compression.
Oil for a high-pressure cleaner which have a one-time oil filling without oil filler cap which oil can also be used.
Turmopol oil brand Hilti always good but is very expensive.
3/6/2016 3:46:11 AM •
Hammering
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1,590 views • 0 helpful votes
I need to replace the brushes. Don't know how the old one's are removed.
The carbonbrushes if they are short and you will replace them there is a long brown wire on one of the 2 brushes thats goes inside the handgrip but be careful there are 2 plastic pieces for the power licht and the carbon brush is on a electronic modul inside the handgrip by a sliding contact 90 degrees beware also on the black damping rings inbetween the machine and handgrip 4 pieces to protect vibrations . if you have open the handgrip i will say that you allways control the bearing at the end of the armature because its a very to small choosen bearing that is oft in bad condition i mean it , if it has its operating hours if the carbon brushes are short.but the handgrip must be opened for remove the brushes.
10/27/2015 2:02:23 AM •
Hammering
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885 views • 0 helpful votes
How do you oil this tool?
Dewalt used the green colored Renolit Paragon in the most tools but sometimes other lubrication .
tip
fill in on google search pictures and write[ " renolit paragon " ]
7/30/2015 3:19:02 PM •
Hammering
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840 views • 0 helpful votes
Where do I put the oil?
Most breaker hammers have no oil if they have no high speed.
But special grease with high thermal conductivity.
very important .
If there is loose grease buy a consumables kit only complete , only then it makes sense.
6/7/2015 12:35:12 PM •
Hammering
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903 views • 0 helpful votes
Armature for kango 950 240
Unfortunately, Kango is gone - there are very few parts available and most of the parts still around will only be found in Europe now. It really is too bad because they were a great hammer.
2/22/2015 12:36:33 PM •
Hammering
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1,698 views • 0 helpful votes
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