Lots of updates I am behind on. But first some little things that have been consuming some time and bench space I wanted to wrap up with the storm raging outside.
A few months ago, I set out to try and solve the air-pump mystery. I know many send them off, many buy from SOR, or just gut them and use them as a visual for restorations and emissions.
I had three on the shelf from various dealings on 'mud, however, none of them spun without either a small war inside, or not at all.
I took the best of the three apart. Here is the diagram for reference:
Disassembly Instructions:
Step 1: Remove 17616 and 17617 Nut and Washer. NOTE REVERSE THREAD.
Step 2: My pulley came off very easy using a steering wheel puller, along wi the 17621 key. Set aside.
Step 3: Remove the four 40825 screws and washers holding the 17602 cover on.
Step 4: I lightly tapped on the cover and body of the air pump with a rubber mallet until they started to separate.
Step 5: I then used a hard plastic interior trim tool to start evenly separating the two until the cover separated.
Step 6: Remove the 17611 screws (6 of them) and that will release everything you see in the diagram down to the 17614 Springs.
Step 7: I set the body on two 6x6 chunks of wood and used a rubber mallet to lightly tap on the pulley shaft/main shaft until they all separated.
At this point is should all be separated, lay it all out and clean what you can. I was lucky that in the three pumps I had, the 17614 springs and the "shoe kit", I was able to make a nice set out of all of it. I apologize I do not have a source for these pieces.
Next, 17603, replace with Koyo B-188. This bearing pops right out. Note the replacement bearing has more rollers/pins:
This is a tricky part. Notice in the diagram above, Toyota does not show or discuss the main bearing that the shaft spins on just aft of the pulley. This is a bit of a bugger, I used a large/long socket and hammered from the inside out to remove.
Please note that INSIDE the channel this bearing rests in, is a copper bushing. You can see the pattern is forms on the bearing I just removed here:
The replacement bearing is a 6203-2RS. They come in bags of 2:
Here is where I thoroughly cleaned the body, basket, and all parts in cleaner, soaking overnight and then polishing.
After cleaning, I gently pressed in (using a seal/bearing driver) the new bearing. It can only go in one way. HOWEVER (big note here). That copper bushing I mentioned to you earlier needs to be cleaned as well, and installed prior to pressing in a new bearing. While pressing, note that the bushing will want to get in the way, so use lots of grease and keep your eye on it, so that the bearing seats properly: