How do y'all remove the tiny screws connecting the rod to the wheel ? Thank y'all for the replies.

I will give it a try. Thank y'all for the replies.

Update: I lubricated the gears. The gears were in excellent condition. While I was running it to make sure the lube was spread through the gears. I noticed the right side of the locomotive the top straight piece above the piston rod was bent. I tried to straighten it out, but it seems like the top piece and bottom piece don't have any tension and is now causing the locomotive to lock up and won't do slow speeds. Any idea on how to fix this? Thank y'all for the replies.

I was able to find it. The bachmann ez lube came in today so I'm going to try and take it apart today if not I will take it apart this weekend. Thank y'all for the replies

Is there any diagrams on how to disassemble it? Thank y'all for the replies.

This is the noise it is making. Thanks in advance. 

Ok, I will look into that. Thank y'all for the replies.

Update: I ran the locomotive for a good 30 minutes to an hour. The noise did get quieter at a pacing speed and faster. The noise did get louder at slower speeds.Thanks in advance

I will give that a try. Thank you for the reply.

Hey everyone, I have a Bachmann Ho scale 2-8-2 mikado #4501. The locomotive hasn't ran in some time it has been on display. I got the locomotive out to do a run and noticed the locomotive making a squeal noise. It only does it going forward. Any idea what it could be? I ordered bachmann ez lube to see if it is a lubrication issue. Thanks in advance.