I've thrown a few out. Love em. Just found your vid, and I appreciate it. Just took my last one apart and found a stuck bearing! Cleaning and lubricating fixed it! Your vid gave me the confidence to do it. Thanks!
The Bering! I had trouble figuring out how to separate the motor from the reciprocating housing. When I saw you pop it off I had hope!!! Haha. Thank you very much.
Thank you this video just gave me the confidence to open my tool and repair it. I thought the motor was seized. But a good cleaning and oiling it’s running like a champ. Thank you very much for this video
This video helped me repair my 4 yr old Fuel M18 Hackzall. There's a bit more to the m18 fuel version but same process to repair🤓 The bearing on my Hackzall was also jammed up and I had to free it up by hand by twisting the other end of the shaft. Cleaned up as much old grease and debris and regreased. Works fine now😎
Awesome and now you have a backup. I'm always worried taking stuff like that apart is going to end up with pieces flying all over the place. Nicely done. !!!
I just purchased the Fuel version and it’s quite a bit larger (and guess a bit more powerful). Thinking of grabbing one of these to keep in a small punch list service bag. Enjoyed your video!
Power isn’t always a bottom line....just bought a tiny pair of end cutting nippers because of the size. (Thinking this non-Fuel will be great for antique exterior trim resto and parts replacement.)
Power isn’t always a bottom line....just bought a tiny pair of end cutting nippers because of the size. (Thinking this non-Fuel will be great for antique exterior trim resto and parts replacement.)
Thanks for this! Just today I wanted to use my trusty Hackzall to finish a subfloor cut up to a wall and discovered that it wouldn't reciprocate. I've used it pretty hard in the past, including cutting a drywall ceiling about 12 feet across a room I remodeled last year. I knew I was abusing it with all the drywall dust raining down on it, but it did the job like a champ. I tried to clean it afterward, but didn't have a T8 screwdriver to open it up. I was actually able to use it a couple of months ago to cut an ABS drain, but it got a little wet then. That's probably what caused it to seize up with a little rust. I'll try to be more careful with water now (and hope I never have to use it on another drywall ceiling!). I cleaned out any grungy grease I found and relubed the gears with the clean extra grease that was in the housing. It seems a little different from automotive grease.
The sound differences between your two 2420 Hackzalls I would associate with the repaired one needing new bearings and Milwaukee changed the gear box internals on your newer one. You can verify that when you decide to take the newer one apart.
Mine started jamming up after I told an apprentice to cut a pipe. I ran into another room real quick and when I came back all I see is him cutting the pipe with the blade pointing straight up and water just pouring into my saw. WTF! I know I'm supposed to train my apprentice but Jesus Christ where is the common sense? Cut it from the top down and pitch it so that all of the water runs away from the saw.
WHAT IS SEEN AT 4:20 IS THE MAIN DIFFERENCE IN ENGINEERING BETWEEN MILWAUKEE AND CHEAPER RECIP SAWS FROM RYOBI, WORX, ERBAUER, TITAN, ROCKWELL, JCB, SKIL, WICKES, PBX, OZITO ETC. MILWAUKEE HAD PUT A BEARING ON THE MOTOR SPINDLE FIXED IN THE GEAR HOUSING. OTHERS RELY ON THE MOTOR BRONZE BUSHING TO TAKE THE FORCE REPELLING THE PINION FROM THE GEAR. THE TWO FLIMSY THREADS IN THE MOTOR HOUSING(HOLDING THE MOTOR) SLACKEN AND THE PINION RECEDES FROM THE GEAR. THE RESULT: A CHEWED UP GEAR.
I had to repair a wire on mine today. Took the gearbox apart and regreased it. My motor does not move around like that. There's a small pin that keeps it in place
Is it that small pin that’s about a centimeter long? The one that connects the the gear with the motor to the gear box? If so how do you get that pin back in?
Great video! My saw is working fine and sounds fine, but once I start putting under load it blinks the battery indicator as though it's too much load. Any ideas? Motor failing? Thanks
Mine was doing the same thing. I just used a screw driver to pry against the head and pulled the trigger and now it’s running again. Only took 2 seconds.
Danylo66 yeah I can definitely tell you have used yours way more. Thanks for the video! Do use the m12 tubing cutter too? Love that thing but have to keep 8 of them because they are always in the shop.
@@Kcwaterheaters I have only 1 M12 cutter. It works great. I have the larger m12 battery on it. I believe its the 4 amp hour battery. The smaller batteries just dont last long.
Thanks for the video. Mine stop working today (the symptom when I press is a clunk sound with no spinning) so I will try to repair following your guidance. I loved you last comment about price difference b/w US/Canada. :-) What kind of cleaning solution did you use (you mention taking the parts outside because of the smell)?
I believe i use varsal. But any degreaser will do. On the metal parts only. Some people will be tempted to soak the whole tool, I say that for the people that are not familiar with electrical part.
@@cosprint btw i did fix the tool successfully. In my case, the issue was also a seized bearing on the motor shaft. I think you referenced this issue in the video (but did not show it). Between the tips in the comments and your video, I got the job done. So thanks again for saving me some money and helping me feel good about not sending something needlessly to the land fill.
I put a new DeWalt blade in my M12 Hackzall (thinking the blades are interchangeable), but when I went to remove the blade it is absolutely stuck! The blade changing knob turns as usual, but the blade won’t come out. Do you think if I took it apart I could get the blade out? Thanks!
I find some blades get stuck. I have used a set of adjustable pliers to force it open to remove the blade. Grip the release nob and turn it. Not all adjustibles can grip it . Lubricate before you put a new blade in. Some times its the coating on the blade thats to thick. Scratch the paint and it should work. I find that Lennox blades work well. Good luck.
If its just around the house, the non fuel, if still available, will last you. My first one lasted 3 years working. The second one is going strong after 2 years. I may get the fuel, but for now im happy with the brushes.
my 12 hacksaw locked up. I pulled it apart and the bearing on the motor is locked up. I was hoping to see that bearing replaced. I can't figure out how to remove the spiral pinion gear from the rotor shaft of the motor to remove the bearing. Not sure if I can. Milwaukee sells it as an assembly (motor, bearing and pinion gear) Just seems like a waist to change all those parts only to replace the bearing.
I had that as well. sprayed some release ease on it and I think i gently applied pressure and turned it loose with some pliers. I belive that its just a press fit bearing. you might need a small puller. But try to free it up first
I'm not sure. But if you can soak the bearing in penetrating oil it might loosen up. Originally when I had it i n for warranty the motor came with a bearing and grease. Hopefully soaking it will help.
That's something I did not think about. 🤔 I'll keep that in mind. We are starting a new channel soon, with content on restoring a 79 trans am. So far, we have made sure to turn off external noise. Thanks
