Sunbeam ALPINE I SERIES: APLINE II SERIES, Руководство по ремонту, Страница: 328 / 413

I
st re-issue
Page 14
"FOLLOW THROUGH"
O·OIO in.-CH>lO in.
0·025 in.-0·040 in.
FIXED
CONTACT
BLADE
6367
STOP
ARM
ARMATURE
TENSION
SPRING
Fig. 12.
Mechanical
settlnf
of
cut-out
noting the voltage at which.this occurs. This should
be 12·7-13·3 volts.
If operation of the cut-out takes place outside these
limits, It will be necessary to adjust. To do this,
turn the cut-out adjusting screw (see Fig. 12) In a
clockwise direction to raise the voltage setting or in
an anti-clockwise direction to reduce the setting.
Turn the screw only a fraction of a turn at a time.
Test after each adjustment by Increasing the engine
speed and noting the voltmeter readings at the
Instant of contact closure. Electrical settings of the
cut-out, like the regulator, must be made as quickly
as possible because of temperature-rise effects.
If the cut-out does not operate, there may be an
open circuit In the wiring of the cut-out and
regulator unit, In which case the unit should be
removed for examination or renewal.
(2)
Mechanical Setting
If for any reason the cut-out armature has to be
removed from the frame, care must be taken to
obtain the correct air-gap settings on reassembly.
These can be obtained as follows:-
WSM. 124
Section N (Elec. Equip.)
Unscrew the cut-out adjusting screw until It Is well
clear of the armature tension spring.
Slacken the two armature securing screws.
Press the armature squarely down against the
copper-sprayed core face and re-tighten the
armature securing screws. No gauge Is necessary.
Press the armature squarely down against the
core face and, using a pair of snipe-nosed pliers,
adjust the gap between the armature stop arm and
the tongue to between 0·025 In. and 0·040 In. by
carefully bending the stop arm.
Adjust the fixed contact blade to give a "follow
through", or blade deflection, of between 0·010. In.
{0·254 mm.) and 0·020 In. (0·508 mm.) when the
armature Is pressed squarely down against the
core face.
Re-set the cut-out adjusting screw as described
under Para. (1).
(3)
Cleaning Contacts
If the cut-out contacts appear rough or burnt, place
a strip of fine glass paper between the contacts­
then, with the contacts closed by hand, draw the
paper through. This should be done two or three
times with the rough side towards each contact.
Wipe away all dust or other foreign matter, using
a clean fluffless cloth moistened with methylated
spirits {de-natured alcohol).
Do not use emery cloth or a carborundum
stone for cleaning cut-out contacts.
FUSE UNIT {Fig. 13)
Two 35 amp. fuses with spares are carried by a
separate fuse unit. The fuse which bridges
terminal blocks 1-2 Is to protect auxiliary
circuits Independent of the Ignition switch. The
fuse bridging terminals 3-4 protects those
circuits controlled by the ignition switch.