Question about Mantis 2-Cycle Tiller
Posted by Anonymous on
I posted this same procedure in a reply to this post:
Follow the procedure for removing the worm gear shaft by removing the retaining ring at the bottom of the housing and extracting the worm shaft and other associated parts, Adding heat to the bottom of the housing to expand the hole will help the removal of the #458 roller bearing - with the housing in a vise, tap on the top of the worm shaft through the top hole of the housing with a punch or rod smaller than 1/2" in diameter. Then remove all grease from the housing - to eliminate the remaining roller bearing pieces that may reside in that grease. After total teardown and cleaning place the worm gear housing in a vise apply heat with a propane torch to the outside of the worm gear housing in the vicinity of the beaing location. Applying heat to this area will make the housing expand and make it easier to remove the remnants of the old bearing. With the housing still hot, take a punch or piece of 1/4" steel rod and insert it from the top hole, where the drive shaft goes in, there is a large ridge in the cast housing that the bearing mates against and immediately past that the bearing body will protrude just a little more into the cavity, with the rod against the bearing body gently and rapidly tap on the rod. You can look into the other side through the housing cover opening to be sure you are on the bearing and not the cast metal ridge. I just replaced that bearing this morning, be careful putting the new one in as well, they can be damaged very easily if you don't apply even pressure.
Posted on Jun 06, 2014
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Posted on Jan 02, 2017
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