Hi all,
I've just disassembled an MSV562 with a VEX60 engine. I removed the blade disc and I'm trying to remove the blade boss. The reason being, I was going to replace it with a boss designed for a non-reinforced disc, which can take 4 blades and also has the fins required for better uplift of the grass (CA09444G).
Unfortunately, the boss is very stuck on there. Unfortunately, I don't have any large/heavy and solid steel structure to hammer the boss against. I tried giving it a few light taps with a smaller hammer (Not wanting to damage the bearings), and of course, put some WD40 on the threads to seep down. No luck here, so I got a 3 jaw puller to try to remove the boss. It got to a certain point and I just couldn't turn it by hand anymore, and I didn't want to leverage the flywheel and potentially break something. So I thought I might be able to use my impact wrench. After all, the pressure being put on the crank should be offset by the pull of the jaws. I noticed the puller rotating slightly, but when I looked at the position of the boss it didn't appear to have changed.
At this point I wanted to stop, I was concerned that it was still moving and I was getting nowhere, and also decided I needed to come up with a new strategy. After removing the puller, however, and rotating the engine from the crank/boss, I noticed that the engine was more difficult to rotate :-/
So at this point, I'm both concerned and confused. My initial thought is that somehow I may have bent the conrod somehow, but how? If the pressure put on the crankshaft is being offset by the pressure put on the boss, shouldn't they cancel themselves out? Also, how on earth am I going to get the boss off now?
Cheers in advance,
pau13z
