First ordernumber 931848 lubrication necessary it has its working hours on it.
parts to change in priority
1 x 944-927 , 949457Z , 956-960 , 944-936 , 956-965 ,
999032 , 956-996 , 944-928
the important thing is that the machine is airtight at the front so as not to burn the O-rings through the air and incoming dirt friction look the orings good and if the lock bolt on the front feel not smooth replace that also and every oil seal you can find its different what should neccesary but that the tool runs with thick and dirt beaten oil . solvent clean the hard metal parts and replace if there are grooves on or cracks
Hitachi PH 65A Demo Hammer Parts
Thank you Pieter, it's really helpful and makes sense to me I'll check that and will request the parts and will let you know how it goes!!
Thanks for the rapid answer , i had not thought of this part in priority before you order 956953 Connecting Rod Assembly control the bearings of it
But look with high priority before you order because i see there is a problem to get or you can try to change self the needle Roller bearings if they are gone. the dimensions of these bearings are standard and loose somewhere available
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SOURCE: Makita demolition hammer stopped working - believed electrical pblm
you have to use an ohmmeter to check it, you must check the continuity of motor coil after the switch terminal if in this point you have the reading less than 200 ohms, try checking it before the switch but this time you have to switch it on. If you have the readings continue to check it from the Power Plug. Most cases the problem is only in Power cord .
SOURCE: Bosch demolition hammer oozing grease/oil.
Look around there for some O rings we have had this same problem with some of our Bosch hammer drills, and they usually replace a set of seals around the nose of the tool
SOURCE: this demolition hammer will make the sound like is
Large hammers have an air driven piston (an air cushion betweem pistons) and an intermediate anvil that actually hammers on bit. If the cylinder and air cushion piston are dry there will not be enough suction/pressure between the driver piston and driven. Remove lower part of hammer and lube with electric hammer grease. Make sure that orings fit snuggly and the anvil is not jammed. Do not store hammer with the bit pointing up because the driven piston will slide down cylinder and hug driver piston. If the hammer was stored pointing up, turn hammer around and place in stand with nose down in a warm location so that the driver piston will drop into place. Good holidays
SOURCE: dewalt demolition hammer stopped hammering.
could be a few problems, the striker could be stuck from debris or the ram might be hydraulically locked. they make a rebuild kit for this tool if you are mechanically inclined. I would suggest first going to their site and downloading a parts breakdown and there you will find what is involved and the parts listing. It is "dewaltservicenet.com" and on the left hand side type in your model number and then follow the links to download this. Let me know if you need more assistance.
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