Local authorized LG repair shop told me, don't waste my time fixing it. Bench fix is $300 dollars. Purchased part, watched a video and bam. Fixed in 3-4 hours.
Pulled PTAC out of wall sleeve, unhook wire harness from control area, remove condenser shroud and motor and fan blade all at the same time. Replaced motor bracket and re-installed in reverse order.
very tight working situations. made a mistake with a delicate piece of the fan and broke it and that rendered the part unuseful. Since I broke it I considered it to be my fault and just threw it away. Ordered another from another company hoping that just maybe it would be more durable. It arrived in only 4 days. Yours took well over a week to arrive. Thanks for asking for my experience.