These screws are not for calibration, but they are the screws that fix
the bourdon springs from the temperature gauge and the oil pressure gauge.
Calibration is done by bending the U-shaped connection between the
bourdon spring and the rack of the instrument, however you have to
dismantle the whole affair first to get to it.
Kees Oudesluijs
NL
Op 21-3-2013 0:49, Bob Spidell schreef:
> Just noticed there are three small screw heads on the bottom of my
> BJ8's safety (oil press./coolant temp.) gauge. One is located next to
> the sender line, but two are side-by-side near the face--anyone know
> if these are for calibration?
>
> Bob
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