![]() ![]() Metabo HPT nail gun won’t drive nails all the way in However, if your air pressure is okay, then you will want to open your gun and inspect the driver blade and the piston O-ring to see which is damaged and replace accordingly. The correct pressure, therefore, is the lowest pressure that will drive the nail flush with the surface-using higher than required pressure will overstress the gun and eventually damage it. Now, the recommended air pressure is between 70 and 120 psi (5 – 8.5 kgf/cm²)-This will typically vary depending on the length of the nail you are using and the hardness of your lumber. The first and easiest step is to always check the air pressure that you are using and increase it to the recommended pressure. Your piston O-ring is damaged or worn out.You are not using the recommended air pressure.Metabo HPT nail gun troubleshooting continued… Metabo HPT nail gun has a weak drive (is slow to cycle) Regarding this, there’s no shortcut- just replace the piston O-ring– it comes with easy-to-follow replacement instructions. Now, if all the above don’t work, then what you likely have is heavily worn or completely cut piston O-ring. If the nail sizes are correct, cleaning and lubricating the feeder could help-follow the steps we have just seen above. To start with, check figure 1 above to make sure that you are using the recommended nail sizes for your gun. Piston O-ring is heavily worn out or cut.įollow the below steps to fix an intermittent feed in your Metabo HPT nail gun….If you note that your nail gun may be skipping nails when firing, there are quite a few reasons that may be causing this. Metabo HPT nail gun skips nails (intermittent feed) Now, screw back your magazine and you are good to go. You can now pull out your magazine and remove the jammed nail. You will then take out the bolt attaching the magazine to your nailer. Now, on the nose of the gun, take out the first two bolts furthest from the push lever as below: That said, jamming once in a long time is fine.įirst, you will want to disconnect the air hose to prevent any accident from occurring as you clear the jam. ![]() Here is the thing: if your nail gun is frequently jamming, this might mean that the nails you are using are the wrong size for your nailer(to be sure, see the earlier nail size chart). Finally, lubricate the feeding surfaces of the nose and the nail guide after cleaning(This promotes smooth operation and prevents rusting).Open the nail guide and clean dust if any-Also be sure to lubricate the feeder shaft and nose opening.Clean and lubricate the knob sliding part using the reccommeded Hitachi pneumatic tool lubricant.If all of the above steps didn’t work, then you should clean and lubricate your feeder(I had already mentioned that lubrication is super important when it comes to these nailers). We will talk about clearing Metabo HPT nail gun jams shortly but before that, let’s talk about the solution to the final problem that might be causing your gun not to fire… Lack of lubrication Of course, if you note a nail jam, then you will have to clear it. ![]() Next, if there’s no problem with the collating, you will want to make sure that there’s no jam. Remember that if broken, you can manually feed the nails or remove the dislodged nails. Now, if you’re using the right nail size, open your magazine to check whether your plastic collating is broken. To point you in the right direction, below is a chart of the correct nails sizes to use on the Metabo HPT nailer.
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