framer Posted September 23, 2015 Report Share Posted September 23, 2015 i just bought a dewalt dcf899 impact wrench. its a nice tool, but why no grease in it??i literally used it one time to change my mower blades, and then it started making an aweful noise and chatter when free spinning with no load. i noticed right at the anvil shaft that there was some black fine powder. so i decided to take it apart and low and behold, hardly any grease inside. and absolutely no grease at all on the anvil shaft or the bushing in the case.it seems to be a common theme with dewalts to be under greased, but this is ridiculous. and i'd hate to think how many other of these impacts have no grease.by the way, the impact works real smooth now, after i added grease. i'm just not happy about the premature wear from running with no grease. Quote Link to comment Share on other sites More sharing options...
DPSElias Posted September 23, 2015 Report Share Posted September 23, 2015 I don't think there needs to be that much grease in there, I have rebuilt pneumatic impacts and there wasn't a huge amount of grease. I think all it needs is a coating it's not like a gear case, but again pneumatics you should continually add oil to the tool for proper operation How do you like the gun though? I really want on of these but don't need one at the moment. Was it as powerful as you expected? Quote Link to comment Share on other sites More sharing options...
HiltiWpg Posted September 23, 2015 Report Share Posted September 23, 2015 That is pretty bad. There should have been enough grease in there to prevent the chatter and wear you described.Sounds like the robot grease machine ran out as it was filling yours up!Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
StrippedScrew Posted September 23, 2015 Report Share Posted September 23, 2015 Now that's it open Id put a good quality grease in there. Quote Link to comment Share on other sites More sharing options...
Peter Argyropoulos Posted September 23, 2015 Report Share Posted September 23, 2015 I keep a tube of Loctite Viper Lube on hand for stuff like this, plus I use it to grease all my SDS bit shanks. It makes for some dirty shanks, but they work much better when the bits can actually slide in the chuck Quote Link to comment Share on other sites More sharing options...
Logan Posted September 23, 2015 Report Share Posted September 23, 2015 Sucks that they couldn't put any grease in it glad it is working ok now Quote Link to comment Share on other sites More sharing options...
MikeyB Posted September 24, 2015 Report Share Posted September 24, 2015 That blows, you should not have to open a new tool to add grease... That tool should last a good long time before any pm is needed like that....I wonder if you would void the warranty by opening it up? Quote Link to comment Share on other sites More sharing options...
Conductor562 Posted September 24, 2015 Report Share Posted September 24, 2015 There should have been more than that, but there isn't a lot of grease in them to start with. Quote Link to comment Share on other sites More sharing options...
framer Posted September 24, 2015 Author Report Share Posted September 24, 2015 There should have been more than that, but there isn't a lot of grease in them to start with. i can understand not to have a lot of grease, but to have absolutely none on the anvil?? even just a dab with a finger would have been way better than nothing.when the impact was making the chattering noise, it would go away when i pressed in on the anvil tip while running, plus seeing the wear dust, so thats when i figured i better open it up to see whats going on. its just kind of a shame, that with as nicely designed this impact is, that it makes it out the factory(blame china, lol) without the simplest of things(grease). Quote Link to comment Share on other sites More sharing options...
Bigmikez Posted September 24, 2015 Report Share Posted September 24, 2015 Wow man that sucks to hear I'm glad that it's working smoother now but like mikey said u shouldn't have to be opening up no new tool. Quote Link to comment Share on other sites More sharing options...
HiltiWpg Posted September 24, 2015 Report Share Posted September 24, 2015 Mass production will always have a few rejects. Luckily you knew what to look/listen for. Awhile ago, when I got my M18 fuel impact, I had to exchange the first 2. The forward/reverse switch on the first one wouldn't lock and just slid back and forth. The second one made the loudest screech and clacking sound when you took your finger off the trigger! The third one was good!Sent from my iPad using Tapatalk Quote Link to comment Share on other sites More sharing options...
Nordraw Posted September 24, 2015 Report Share Posted September 24, 2015 They must be trying to save grease in China these days. Quote Link to comment Share on other sites More sharing options...
DPSElias Posted November 16, 2015 Report Share Posted November 16, 2015 Just purchased this beast anyone else having this problem?Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
framer Posted November 16, 2015 Author Report Share Posted November 16, 2015 Just purchased this beast anyone else having this problem?Sent from my iPhone using Tapatalkopen it up and see how much grease is in there. its very easy to open, just remove 4 screws. Quote Link to comment Share on other sites More sharing options...
DPSElias Posted November 18, 2015 Report Share Posted November 18, 2015 I was planning on it unless I could get some confirmation that this potentially was resolved, I should get it in the mail today. Quote Link to comment Share on other sites More sharing options...
Fazzman Posted November 18, 2015 Report Share Posted November 18, 2015 Put some moly lube or something like that in there and put it back to work. Quote Link to comment Share on other sites More sharing options...
DPSElias Posted November 19, 2015 Report Share Posted November 19, 2015 Yea I opened her up, she looked better than Framer's but I still put a nice coating on the anvil and mechanism, will test it later on this evening. Quote Link to comment Share on other sites More sharing options...
Robrob Posted September 1, 2019 Report Share Posted September 1, 2019 I'm struggling to find out what the correct grease is for these, every person I ask says just put this in or just put that in. Anyone here actually fully know the correct grease ? Quote Link to comment Share on other sites More sharing options...
Biggie Posted September 1, 2019 Report Share Posted September 1, 2019 I don't fully know but if you look at a parts list for the dcf899 the only grease that is listed is G-2008 Molykote. I think this is the same lube they use in the gear cases of a lot of tools but that must be all they're using as they don't have anything else listed. I'm no grease expert but I would say the exact grease probably isn't real critical. A couple things to keep in mind though, too much gerase will actually make the impact not hit as hard and there aren't any seals in the nose cone so if it's too light of a grease when it heats up it might get messy leaking grease. Quote Link to comment Share on other sites More sharing options...
framer Posted September 10, 2019 Author Report Share Posted September 10, 2019 On 9/1/2019 at 6:15 AM, Robrob said: I'm struggling to find out what the correct grease is for these, every person I ask says just put this in or just put that in. Anyone here actually fully know the correct grease ? any grease is better than no grease, but i think any grease that contains moly will be good. Quote Link to comment Share on other sites More sharing options...
Framer joe Posted September 17, 2019 Report Share Posted September 17, 2019 Weird ...I've had mine since it came out and use it daily,a lot...don't know about the grease Quote Link to comment Share on other sites More sharing options...
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