Turbo dizzy disassembly - have questions

[2eighTZ4me]

Anyone done it? I need to replace the optical pickup, and there's a washer like piece beneath the rotor button and trigger wheel that appears to be pressed on. I can't get it off for fear of bending something. What's the catch here? It has to come off in order to get the pickup assembly out from the dish. Does this thing have to be pressed off somehow, or pulled with a small gear puller?

 

I pulled the drift pin at the base of the dist. to see if the shaft would come out the top - doesn't want to budge either. I'm at a loss.....

[cgsheen]

 

The shaft is in a bearing that's fairly tight and secured by 2 screws under the optical unit.  You don't need to remove that to replace the optical unit. (In fact, you need to remove the optical unit first to remove the shaft)  If you ever need to remove the shaft, you may need to press it out - after you remove the retaining screws.

 

On the stock dist. the optical unit should be fairly easy to get to.  Once the rotor and metal cover plate are off, you should see this:

 

 

The center screw needs to come out and then everything should lift off the center post.  It's a tight fit on most of these parts - I should say snug - but it all should come apart with a little wiggle.  There's the big "top hat" thing on the top, the optical disc (chopper wheel), and a tabbed washer for alignment, and a spring washer - then the base of the optical disc assembly.  The base is not keyed and it just slides over the shaft - if that's what you're having trouble with, it's just "gooped up"...  Penetrating oil? Laquer Thinner? Hold the bottom of the shaft and try to twist it and lift up as you're twisting.  Again, a snug fit, but it just slides over the shaft and it rests on the bearing sleeve underneath.

 

 

Stock, the optical unit is held in by 3 screws at the bottom of the dist.  Some have been replaced by a later design.  The originals have no cover, the electronics are protected by a thick layer of resin over the top and you can see the components.  The later design has a plastic shell over the whole module and 3 bolt holes to secure it. 

 

 

You can use either version (the later version of the optical module is used in all the VG30 dist type Maxima's, M30's, and Z31's - you can transplant an optical module from any of those cars into your L28ET distributor)

 

Hope this helps.

Edited August 27, 2013 by cgsheen