Makita Hammering - Answered Questions & Fixed Issues

https://www.manualslib.com/manual/585142/Makita-Hm1214c.html?page=5#manual

Most likely it is the brushes - most of their models in that series have auto-stop brushes that push away from the armature when they reach a certain wear point.

Makita A-90582 or (the equivalent)

Hitachi 981840 Hammer Grease

But dont forget to replace all o-rings and seals at the same time some older models have special wear tear parts sets for service also called maintenance spare parts. If the brushes are short then its time for service.

Yes you can, but you can receive to much hidraulic pressure in system or to low. Thats not good for tool

Hello,

You can try to watch this video: https://youtu.be/udj28_tLJvU

Dont forget to lubricate o-rings when mounting parts in. For flat x rings you can hold then in hot water to make them softer and thrn put ring in a place

181490-7 grease 30g 1 pcs complete be shure there are no cured o-rings or bad gaskets . 188015-8 its the maintenance kit for the service it contains already this 30 grams grease, where come 60 grams advise ? i like also to use some more grease by this heavy kind of hammers. But tools like Hilti with liquid (oil) lubrication and very tight tolerance ball bearings if there is to much (turmopol) oil used it will be damaged, and too little oil also its calculated. I cannot give garantee that 60 grams are advised by a makita service, if you order a maintenace kit ask the seller about why it only contains 30grams. The information to use 60 grams ? doubt.

254031-3 pos14 part inlay key can be damaged pos 11 drive rod 315146-2 can broken IF mechanical damage or dried out by leaking gasket / orings. For better repair use after a repair of some parts an maintenance kit 193394-1 If the working hours are on it, but also after an repair on other parts because leaking tools can be dried out and give cured o rings in a very short time by building up overheat temperature inside and will not build up pneumatic power it will not do the job and is not good for physical strain.

The GREASE for this heavy jackhammer Makita 181490-7 Grease (if there are short carbon brushes to find ) replace all orings gaskets (and looking for an maintenance kit for this machine) 188015-8 thats the better way to service.

Connecting rod Part Number: 315419-3 or Woodruff Key 4 Part Number: 254001-2 Makita HM1211B Parts List and Diagram eReplacementParts com Or broken spindle/ worn bearing(s)

193243-2 revision maintenance service kit With all necessary rings and fat , beware before ordering an service kit take the time to remove all parts of the spindle ringing on the hammer tube spindle for cracks the chisel sds impact bold striker must be even air-tight on the chisel impact bold not leaking grease out of it , if its leaking the air flow will burn the o-rings in a very early time because of the building heat made by the leaking airflow . and loose of lubrication. fat grease .

burning motor take it in for a check or junk it

Order an maintenance kit for it , when the working hours are on the tool , all given parts in the kit must be replaced its not a good idea to only grease it, the tool should not leaking by the chisel. then there will be a bad break-force and give a long working job..

Makita 181490-7 30grams

demolition hammers require hydraulic oil in most cases.
Any good tool shop should have hydraulic oil to suit.

Makita have most cases a problem with the stroke bolt in front of the locking sleeve a broken ring that will blocked the stroke bolt. In some cases the locking sleeve is also damaged , a rotary hammer is not made for demolition only a little small task but not for a long load , the metal pieces of the machine is no hard enough for long lasting .

Sometimes its the armature but most the electricmoduul itself

MAKITA HAMMER DRILL GREASE 30G (181490-7) or for the older HM models Hammer grease Makita P-08361

183614-1 its the revision set for the HM1304 BUT be AWARE the B serie can have marketing technical differences its not selled in my country

something broken , or only dry, leaking (o-rings hard or burned inside) or the armature drive is worn .

http://www.homedepot.com/p/Makita-Hammer-Bit-Grease-194683-7/205182387 For outside chisels Inside its depend on the model but most time its a Makita 181490-7 or for the older types Hammer grease Makita P-08361