Fixing sloppy shifting short tail trans???

[mike]

My brother just picked up a 73 620 with the stock short tail 4 speed and its the worst thing about the truck. It is sloppy as hell. Is there an easy fix for these trannys to tighten up the shifter? I know nothing about these transmissions so I dont want to go tearing into it unless I know I can fix it.

[mklotz70]

should be one of these two.... top one has bushing on either side of the fulcrum pin. They can be found new on ebay. You can go to http://www.olddatsuns.com (620 tech page) and download the factory manuals.

 

 

 

[banzai510(hainz)]

Look on the 2nd drawing

item 23 and 24.

 

what happens is the fork prong above gets spread out.

what I did it pull the E clip and pina and stuck a STRONG stainless bolt and sqeezed this together switch takes out some of the slop.

 

some people shim them up with washers but its hard to do without dropping it every 5 minutes.

 

 

some people replace item 34(with brass ones or hard plastic) thinking thats it but I rarely see those as the peoplem when it come to a sloppy stick shift

[mike]

Sweet, thanks guys. It is the tranny in the lower pic. It doesn't look too complicated Ill give it a shot and see if I can fix it for the time being. A 5 speed is definately in the plans at a later date.

[Nicholas7620]

on my Datsun B210. I ordered brass bushings from a Machine Shop in Georgia for around $14 including shipping. I found them on e-bay. I had to grind off a little brass to make the bushings fit.

 

It was an easy disassemble and reassemble. The sloppiness disappeared and I have a tight and smooth shifting transmission.

 

I recommend brass over plastic, brass will last longer. :cool:

[Eastcoast521]

On my 72 I just put some thin washers on both sides of the pin (part #26 in the diagram) to take up the slack. Worked great and didn't cost anything.