So, I've put some hard time on a 540i over the last 16 months. Running it, often, as if it were a 346/550, pushing it to its limits.
A few weeks ago I noticed the chain would rev over the chain brake at times. The brake handle is flimsy by design, and can engage when it rolls over on the ground. Okay, whatever, I'll live and deal.
Wore out the three chains, finally, and swapped sprockets.
I removed the drum and cleaned out all the insides. Worm reinstalled. Cleaned the brake band and all areas of the drum by hand. No burs, gouges, etc.
Now, the brake wants to engage, or at least the saw is sending an electronic signal to stop the motor, as I can still move the chain by hand when it stops the crank and flash its warning light at me.
Releasing the brake sometimes works, other times the warning light glitches, and sometimes it releases, then messes right back up.
The band itself doesn't seem to be engaging when this happens, yet the signal kills the crank. The band isn't broken or warped.
I haven't checked the elbow and spring yet. This SEEMS more like an electronic/signal issue than a physical issue.
Has anyone else encountered this or heard of this?
A few weeks ago I noticed the chain would rev over the chain brake at times. The brake handle is flimsy by design, and can engage when it rolls over on the ground. Okay, whatever, I'll live and deal.
Wore out the three chains, finally, and swapped sprockets.
I removed the drum and cleaned out all the insides. Worm reinstalled. Cleaned the brake band and all areas of the drum by hand. No burs, gouges, etc.
Now, the brake wants to engage, or at least the saw is sending an electronic signal to stop the motor, as I can still move the chain by hand when it stops the crank and flash its warning light at me.
Releasing the brake sometimes works, other times the warning light glitches, and sometimes it releases, then messes right back up.
The band itself doesn't seem to be engaging when this happens, yet the signal kills the crank. The band isn't broken or warped.
I haven't checked the elbow and spring yet. This SEEMS more like an electronic/signal issue than a physical issue.
Has anyone else encountered this or heard of this?