Regulator Group Repairs; Regulator Group Bottom View; Regulator Group As Seen From Cut-Out Relay; Regulator Group As Seen From Voltage Regulator Side - Fiat 411 R Service Manual

Regulator group repairs.
For ihose groups with numbers from 088918 up,
{he resistance being decreased, the current shall
increase up to 5 A, approximately, and the voltage
decrease down to 24 V.
in most cases when the unit does not perform correctiy, it is advisable to substitute it instead of attempting
to repair and calibrate it.
Exceptionaily, ii in need of repair, follow the bench checks already described; successively, according to
the data, obtained replace the resistance, Fig. 146,
and faulty elements. Always replace complete
units. v
Components elements as wet! as resistances
should be kept into suitable containers, which
prevent their being damaged deformed, smeared
by grease or foreign matter, etc.
Fig. 'I46. - Regulator group bottom view.
1-2. Screw and nut, fastening the resistance - 3-4. Nut and
cup fastening the cut-out reiay - 5. Nut fastening the voltage
regulator - 8-'1. Nut and cup fastening the current regulator.
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Note. ~ Mosi taiiu-res, especialiy the important ones, such as:
— excessive wear, or cut-out relay contact sticking;
—- oxidation of voitage and current regulator points;
-- burnt or fitted points;
— short-circuited coils;
— coil burning;
may be due to causes originating outside the regulator group and chiefly to generator rnisiunc-
tion, as, for example, to field winding resistance alteration, impaired circuits (cables, etc.).
Therefore the operator should make the group operate correctly, but in addition extend his
checking to the generator and to the charging system.
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Fi9- 147- - Reeufator Qrfitip {up to No. essem as seen
from cut-out relay.
1. Terminal tube 31 i_or shunt winding end -.2, Terminal
tube at - 3. Terminal tube 30.
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Fig. £48, - Regulator group (up to No. 688917) as seen
from voltage regulator side.
1. Terminal tube 31 - 2. Terminal lube 51 - 3. Terminal tube an -
4. Connection from current regulator to voltage regulator -
5. Current regulator series winding and ~ 6. Connection of
reguiator to the adiustment resistance.
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