Jack of all Master of none Posted March 6, 2020 Report Share Posted March 6, 2020 I have a Hitachi H65-HD2 demolition hammer drill that I am working on. The old manual for it does not show what oil to use in the gearbox. The newer models look like they use a grease, not an oil. Any help would be appreciated. Thanks in advance. Tom Quote Link to comment Share on other sites More sharing options...
method Posted June 7, 2020 Report Share Posted June 7, 2020 Any type of gear oil should work, it will not be critical to use the manufacturer specific oil. Just check the viscosity of the existing oil and pick a thin or thick oil based on the feel of it. Quote Link to comment Share on other sites More sharing options...
steve sandells Posted June 30, 2020 Report Share Posted June 30, 2020 Similar to last query, I have a H65SB Hitachi jackhammer and it looks like it had grease in the housing assembly. would this be right? Quote Link to comment Share on other sites More sharing options...
method Posted yesterday at 07:03 AM Report Share Posted yesterday at 07:03 AM On 6/30/2020 at 7:02 PM, steve sandells said: Similar to last query, I have a H65SB Hitachi jackhammer and it looks like it had grease in the housing assembly. would this be right? Anything should work. The idea is to stop seizing and wear. Grease will eventually get hot and melt everywhere doing the same thing as oil. When I cleaned my old metabo grinder, it was also packed with grease in the housing. Quote Link to comment Share on other sites More sharing options...
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