Nibbler: Bad Vibration
Does your nibbler have bad vibration? To determine where the problem is stemming from, inspect these parts commonly associated with bad vibration: the punch, bearings and die. Use our repair and troubleshooting guide to fix your nibbler yourself. Check your owner's manual for advice specific to your model.
Bearings
A bearing is a device used to enable rotational, or linear, movement while reducing friction and handling stress. Bearings will wear out over time and will produce a grinding, growling or a rumbling sound, which will be accompanied by a vibration. To check and replace bearings, replace the brush caps and pull out the brushes. Remove the screws securing the head of the nibbler to the body and separate. Pull the armature out of the housing and the rubber ring from the lower bearing. Spin the bearings. Bearings should spin freely, with no noise. Any noise or roughness in a bearing needs to be replaced. Use a bearing separator, or a bearing puller, to remove the bearings on the armature.
When installing new bearings, use a socket that only makes contact with the bearings inner race, to avoid damaging the bearing. Tap into place with a hammer and then reinstall...
When installing new bearings, use a socket that only makes contact with the bearings inner race, to avoid damaging the bearing. Tap into place with a hammer and then reinstall...
A bearing is a device used to enable rotational, or linear, movement while reducing friction and handling stress. Bearings will wear out over time and will produce a grinding, growling or a rumbling sound, which will be accompanied by a vibration. To check and replace bearings, replace the brush caps and pull out the brushes. Remove the screws securing the head of the nibbler to the body and separate. Pull the armature out of the housing and the rubber ring from the lower bearing. Spin the bearings. Bearings should spin freely, with no noise. Any noise or roughness in a bearing needs to be replaced. Use a bearing separator, or a bearing puller, to remove the bearings on the armature.
When installing new bearings, use a socket that only makes contact with the bearings inner race, to avoid damaging the bearing. Tap into place with a hammer and then reinstall the armature back in the housing and reattach the head to the main housing. Reinsert the brushes and brush caps.
For bearings inside the gear housing, remove the head from the main housing then separate the cover from the gear housing. Remove the shafts that have bearings on them and check for a bad bearing. On some models, bearings are held in place by retaining rings inside the gear box. Determine how you will need to remove them – being a retaining ring or a puller. Reassemble back in the gear housing once you have finished the repair and add new grease. Reassemble the cover then reattach the head to the main housing of the nibbler.
When installing new bearings, use a socket that only makes contact with the bearings inner race, to avoid damaging the bearing. Tap into place with a hammer and then reinstall the armature back in the housing and reattach the head to the main housing. Reinsert the brushes and brush caps.
For bearings inside the gear housing, remove the head from the main housing then separate the cover from the gear housing. Remove the shafts that have bearings on them and check for a bad bearing. On some models, bearings are held in place by retaining rings inside the gear box. Determine how you will need to remove them – being a retaining ring or a puller. Reassemble back in the gear housing once you have finished the repair and add new grease. Reassemble the cover then reattach the head to the main housing of the nibbler.
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Punches
A bent, or dull, punch can cause a vibration within the nibbler. To check and change a punch, slide the collar down on the die and remove the pin with a small tool. Then, remove the die. Loosen the screw under and on the back of the nibbler head, and the pull the punch housing out. Remove the punch housing and count how many rotation it takes to unscrew the punch. This will allow you to keep the punch at the same height when reassembled. Install a new punch, counting the exact same number of rotations in from the time it catches the thread. Install the punch housing and make sure it is aligned properly with the punch. This could take a bit of patience. Tighten the screw behind the nibbler head and reinstall the die and the pin. Then, pull the cover back up over the pin.
A bent, or dull, punch can cause a vibration within the nibbler. To check and change a punch, slide the collar down on the die and remove the pin with a small tool. Then, remove the die. Loosen the screw under and on the back of the nibbler head, and the pull the punch housing out. Remove the punch housing and count how many rotation it takes to unscrew the punch. This will allow you to keep the punch at the same height when reassembled. Install a new punch, counting the exact same number of rotations in from the time it catches the thread. Install the punch housing and make sure it is aligned properly with the punch. This could take a bit of patience. Tighten the screw behind the nibbler head and reinstall the die and the pin. Then, pull the cover back up over the pin.
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Dies
A worn out, or damaged, die can cause the nibbler to have a vibration. Inspect the die for wear, sharpness and damage and replace if you notice any of these signs. To change a die, slide the cover down on the die and remove the pin with a small tool. Pull off the die and install a new one with the pin. Slide the cover over the pin.
A worn out, or damaged, die can cause the nibbler to have a vibration. Inspect the die for wear, sharpness and damage and replace if you notice any of these signs. To change a die, slide the cover down on the die and remove the pin with a small tool. Pull off the die and install a new one with the pin. Slide the cover over the pin.
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