1. Drain oil from gearbox
2. Remove brushes
3. Remove guide plate
4. Remove large plastic plug from rear of saw
5. Remove nut behind plastic plug with impact driver while holding down while holding down saw blade stop..
6. Remove saw guide plate and front housing.
6. Press or drive armature out of gearb
... Read moreox brearing.
7. Install new bearing on commutator side of new armature using a simple jig to hold the armature.
8. Slide new armature into the gearbox housing.
9. Reinstall nut and carefully tighten with impact driver. This will pull the armature through the gearbox until it stops when the armature shoulder contacts the inner bearing race on the armature side of the gearbox. Take your time with this.
10. Reassemble saw.
11. Refill gearbox with oil.
12. Replace brushes.
Note: I\'ve done this type of replacement a number of times on Skil circular saws without replacing the bearings on the gearbox side and not had any long term problems. But it is likely that Skil recommends replacing the two gearbox bearings as part of the procedure.
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someone let the oil run out on a worm drive saw which destroyed the gear set and welded the bearings
I completely disassembled the saw ,all except the field . identified the parts I needed to replace and ordered online. then I cleaned the gear housing making sure to get all the gear debris out. sand blasted the gear housing the field housing the saw guards and powder coated everything .cleaned and polished the armature contacts .as soon
... Read more as the parts showed up reassembled it .PUT OIL IN IT and was good to go just like new
Found a youtube video. Someone else miss diagnosed the problem with the saw for it had a new trigger switch. The armature was bad as it had continuity from the winding bars to the shaft. Should be electrically isolated from each other. Replaced the armature but the saw would still trip the breaker. No schematic for the saw so back to yout
... Read moreube. found that the switch was miss wired. When you pull the trigger the switch makes contact side to side through the switch instead of front to back. Made the correction and saw works great.
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