Jig Saw: Grinding or Squealing Sound
Hearing grinding or squealing sounds coming from your jig saw may seem concerning, but it is fairly common. Our experts have pinpointed which parts are usually the cause of this issue. Once you have determined the part that needs to be fixed or replaced, review our expert repair advice for tips on completing the project yourself. Refer to your owner's manual for information specific to your model.
On some models, you may have to remove the front assembly from the armature to access the front bearing. Some will pull part, while others will...
On some models, you may have to remove the front assembly from the armature to access the front bearing. Some will pull part, while others will have to be taken apart. To replace a seized bearing, place the bearing in a bearing separator then place the face of the separator on top of a bench vice. Ensure the bench vice is open enough for the separator to only make contact. Using a punch, place it on the shaft and use a hammer to push the shaft free of the bearing. You also can use a puller to remove the bearing. Next, remove the separator and place the shaft in the bench vice with the soft jaws. Place the new bearing on the shaft and use a socket that makes contact with the inner race of the bearing only, to avoid damage. Then, use a hammer to install the bearing on the shaft. Reinstall the armature in the field and make sure the motor is back in place in the jigsaw case. Reinstall the brushes and finally, reassemble the case back together with the base.
If you notice a break, inspect the inside for the broken piece as it may be caught somewhere, causing the grinding or squealing sound. Inspect the brushes for wear. Brushes 1/8 of an inch, or less, require replacement. If they are worn, replace them. Remove any hold down clamps. Pull up on the motor and remove the armature. Clean the commutator with 600-grit aluminum oxide sandpaper by rotating the armature in the direction of travel, only to provide a smooth, even surface. Use a...
If you notice a break, inspect the inside for the broken piece as it may be caught somewhere, causing the grinding or squealing sound. Inspect the brushes for wear. Brushes 1/8 of an inch, or less, require replacement. If they are worn, replace them. Remove any hold down clamps. Pull up on the motor and remove the armature. Clean the commutator with 600-grit aluminum oxide sandpaper by rotating the armature in the direction of travel, only to provide a smooth, even surface. Use a plastic scribe to clean in between the bars on the commutator. Clean with electrical contact cleaner, wipe dry and reinstall back into the field. Ensure the motor is back in place and reassemble the case together. Finally, reattach the base.
The next steps will vary according to models as they are all different. However, the procedure will be similar. Remove any hold down clamps. Pull the armature assembly out of the field. Remove the reciprocating shaft (yoke) from the assembly as well as the clip holding the gear on. Then, remove the gear. Install the new gear on the shaft with the clip.
Reinstall the reciprocating shaft. Some drive gears on the armature are part of the armature, therefore you will have to replace the armature. Reinstall the armature assembly back...
The next steps will vary according to models as they are all different. However, the procedure will be similar. Remove any hold down clamps. Pull the armature assembly out of the field. Remove the reciprocating shaft (yoke) from the assembly as well as the clip holding the gear on. Then, remove the gear. Install the new gear on the shaft with the clip.
Reinstall the reciprocating shaft. Some drive gears on the armature are part of the armature, therefore you will have to replace the armature. Reinstall the armature assembly back on the field and ensure the motor is placed down correctly in the case. Assemble the case back together with the base.