Chevrolet Light Operator's Manual page 62

high resistance in the circuit. The generator should be lubri-
cated according to instructions in the Lubrication Section.
Maintenancc-
The maintenance services on the generating system, espe-
cially the voltage and current regulator, require the use of spe-
cial equipment not generally available to the vehicle owner.
NOTE: Never tamper with the voltage and current regulator
unless you have special testing equipment and are trained
to
do this kind of work.
Remove the generator commutator cover band every 5,000
miles and blowout any dust.
If
the commutatOr is dirty it may
be cleaned with a strip of No. 00 sandpaper. Do not use emery
cloth.
If the brushes are badly worn or the generator does not
respond to commutator cleaning it is best to have your Chevro-
let dealer make the necessary tests and repairs.
Lamps
Description. AU Chevrolet trucks are equipped with "Sealed
Beam" headlight units
in
which the light source, the reflector,
lens and gasket are all assembled in a securely sealed unit.
Figure 57 shows the component parts of the light. With this
A. Sealed Beam Unit
B. Sub Body.
C.
Retainer Ring
O. Lamp Housing
E.
_ C oil Springs (4)
F. Vertical Adjustment Screw
G. Horizontal Adjusbnent Screw
H. Locating Lugs
I. Headlamp Rim
sealed unit dirt or moisture cannot enter the assembly; there-
fore, it retains
its
light reflecting ability indefinitely .
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