OIL FOR JACKHAMMERS - Hitachi Hammering

by a service kit that are made for your model

I do you a suggestion how you can do it yourself if you have a burner to heat up the bolts because of loctite sealant i think you know something of forces on that parts ? because of the tools that are neccesary to service it .
Here is a suggestion of a brand that is maybe there or coming in your Country . thats why i do this suggestion by a dutch link .
https://devs.hitachi-koki.co.jp/ois/explodedDiagram.html?type=svg&modelName=H+90SE&newwindow=true

If you know the brand of your hammer ? sometimes bought secondhand and no modelname google it on 3 words powertools the brand service or choose pictures if you will see pictures where you can see your hammer but there are can be marketing technical differences by the models because a suggestion i made by Hitachi the H90 and H90SE are not compatible by service kit a part of spares can only be used.
The time you spend is meaningless if you only think its leaking oil. because there is a thin lubrication inside most jackhammers and if that's leaking ,the working hours are on it, for time wasted re prematurely burned grommets make high-priority work bolt seal the front of the machine at the stroke chisel the first rings oil seals as well as the size of the stroke bolt must be tight and smooth, as if only a little air leaks burned den all your new o-rings (ie be hard in the short term) by overheating, use lubricants, not just fat because of the high temperature internal structure and the thermal conductivity of the parts together.

Is not enough this is a better suggestion for you because of wasting time for only oil (lubrication is not only very importand because of heating but if it was leaking theres more to do 323745 service kit comes complete with the most neccesary parts allways but priority in this is extra (in most cases) change the strokebolt(second hammer) allways by if that looks not smooth surface.
https://devs.hitachi-koki.co.jp/ois/explodedDiagram.html?type=svg&modelName=H+65SB2&newwindow=true

A complete service kit is neccesary its pointless only to change oil, including hardened o-rings and gaskets and oil seals etc. have had their working hours. it all rests on a marketing technical calculation where no user is slicing.
look for your model and a spare parts servicekit and if the neccesary tools are present you can do it on your own. the front second hammer (stroke bolt) must be air-tight the heavy battle piece must be pulled up by vacuum by the stroke cylinder and worn rings on it and everywhere and bad seals will not succeed

sounds like the connecting rod the attaches the piston to the motor is broken..They are made out of plastic and they break from time to time if you lean on your machine to much!

Replace O-Rings?

I’m happy to help further over the phone at https://www.6ya.com/expert/jason_60e0f57ba319f3f6

A Broken front ring which blocks the lock bolt ?

Is there enough lubrication flow if something is broken inside replace ALLWAYS a complete servicekit , because its , beware of the Turmopol oil is expensive. there are equivalent oils if you asked special for it also by Hilti to buy.
Hilti and Duss are not the 2 cheapest brands of powertools.
Special Tolerance-free bearings are used it is all super calculated on a number of operating hours and about if something is defective, a complete overhaul is necessary.
These hammers may leak no trace of oil in the front until 2006 HILTI has in my Country support , but after this date
exclusively support to the end-users and support closed for brokering.

i want cercrit digram nissan car set rm-w50sam-k

how much oil do i put in my bosch jackhammer?

check the oil in it

usally their is grease packed in the hammer part,you can usally see a plastic type bung(plug)on outter casing