Repair cracked head frames on 8 track players (Pt 1, Frame Removal)

This video is the first in three parts on the repair of the cracked head frames found on most of the later model 8-Track decks. They were commonly made by a company called "Mitsumi" (Japanese?) that used white Polyethylene plastic for the manufacture of the white frame mounting for the player/recorder heads. Polyethylene is widely used in making plastic bottles, laundry baskets, etc and is characterized by a very smooth, somewhat flexible plastic. It is made to be resilient to most chemicals, including solvents, fuels, etc. The disadvantage is that it resists most glues and adhesives. There are a few glues and epoxies that will bind to polyethylene.
In repairing the cracked head, I found it best to remove it from the unit when gluing and clamping it. This video shows the disassembly process for removing the frame mount part.
Apologies for the blurry sections in the video. I have not used this camera in a while and am not sure what is causing this. I have checked settings and looked online but no results.

[@cranke99]

Can anyone tell me if changing a belt can peoduce an annoying hum from the player during tape play? I changed out a 6.1" square belt to a 6" round belt and the player has a higher humming sound. What's that about??

[@waukee321]

Some amount of extra tightness from a belt creates extra resistance to the motor's rotation. This can create the humming sound but also check the starting capacitor connected to the motor which can fail. If you hear crackling as well, it can be a dirty motor armature where you have to clean off the carbon deposits between the windings gaps. This requires opening the motor which is not always the easiest thing to do.You have to be very careful that you do not damage the delicate carbon brushes.

[@cranke99]

​@@waukee321thanks. I'll look into this more regarding what you said. See what I can find out.

[@Satch97]

I can't see a thing

[@waukee321]

Sorry, I haven't used this camera for a while and the blurring wasn't expected. Unlike these vintage audio pieces, today's electronics aren't built, or intended, to last.