I have an early box.
All I did was loosen the lock nut, turn the shaft with a screwdriver
until I felt a little resistance, then locked the locknut back down.
All of the play is gone, and I don't have any problems with "tight
spots" or anything else. It works fine, and the steering is tight... :-)
Eddie
Gary and Cindy Ault wrote:
> Eddie,
>
> Are you talking about an early, or Type "A" box? I know nothing of
> the Type "B" boxes fitted in 1969 (?) and 1970.
>
> The Type "A" boxes are worm and roller. The screw and locknut you
> mention are, indeed, for adjusting the clearance between the roller
> and the worm gear. The worm is machined in such a way that the
> clearance between the roller and the gear is at a minimum when the
> wheels are straight ahead, i.e., "on center", if everything else is
> lined up correctly. With the roller adjusted while on center, the
> clearance between the worm and roller increases as the steering is
> turned left or right.
>
> The worm gear tends to wear right on center. You will be able to tell
> whether yours is worn if you take up the clearance on center, and then
> experience tight spots immediately to the left or right of center. I
> am not aware of any way to correct this other than 1) to replace the
> worm gear, which is very expensive, or 2) to find a good used box.
> You can also replace the "A" box with a "B" box, but I understand the
> bolt holes on the "B" boxes do not line up quite right with the
> mounting holes in the chassis, but this can be altered suitably. The
> "B" boxes (I think) are worm and sector, and do not experience the
> same sort of uncorrectable wear that plagues the "A" boxes.
>
> I am dealing with this issue on one of my cars right now. I bought a
> good used box, and am in the process of exchanging it with the box in
> the car.
>
> Gary
>
> ----- Original Message ----- From: "Eddie" <eddietude@socal.rr.com>
> To: "Datsun Roadster List" <datsun-roadsters@autox.team.net>
> Sent: Sunday, May 31, 2009 3:30 AM
> Subject: [Roadsters] Steering box adjustment question...
>
>
>> Ok, here's another question for the guru's..
>>
>> I noticed that the top of my steering box, right next to the oil
>> filler plug, is a nut on a shaft that has a slot for a screwdriver.
>> Is this an adjustment to remove "play" in the gearbox?
>>
>> My box has about 1.5" of play in it.
>>
>> My 1974 Toyota Celica I had when I was a kid had a similar looking
>> screw. If the gearbox had play in it, you loosened the nut, turned
>> the screw clockwise just until it stopped, and that would remove the
>> play in the wheel.
>> Before I did that, i wanted to check and see if the roadster gearbox
>> was similar. If not, what is that for on the gearbox?
>>
>> Thanks all...
>>
>> Eddie
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