D14/4
ELECTRICAL SYSTEM
G6
Rectifier
A rapidly flattening battery necessitates an immediate
check on both the rectifier and alternator.
Rectifier Test Procedure
Procedure
Battery
Connections
Bulb
Connections
Conclusions
Rectifier Check.
Connect a 6 volt
battery in series with
a 6v., 3w. bulb across
the rectifier terminals.
Reverse battery
connections.
Positive—
Light green
White
Brown
Brown
Negative—
Light green
White
Brown
Brown
Earthed
Earthed
Green
White
Earthed
Earthed
Green
White
Bulb lights
rectifier o.k.
Bulb does not
light. Rectifier
faulty, replace.
Bulb does not
light. Rectifier
o.k. Bulbs
light, rectifier
faulty, replace.
(Refer to FIG. G3.)
FIG. G3.
Rectifier test procedure.
However, before attempting to carry out tests on the
rectifier it is essential that the white, green and brown
cables are disconnected from the unit at the plug
sockets.
Check the rectifier as detailed in Fig. G3. Should it
be found necessary to replace this component or to
refit a proven good rectifier, ensure that it is rebolted
securely to its mounting bracket, remembering that the
case of the of the rectifier is D.C. positive. Take care
when tightening the fixing nut and hold the bolt head
firmly with a second spanner to prevent it from
turning. If this precaution is not taken, the rectifier
plates may twist and break the internal connections.
The cable snap connectors should be clean and
tight, as poor connections can give rise to rectifier
failure, owing to over-load or arc burning.
Switches
On all models except the Bushman Pastoral, both the
ignition and lighting switches are mechanically
identical. A faulty switch will invariably be detected if
the procedure outlined below is adopted.
Remove the headlamp front and substitute the cable
plugs from the ignition switch to the light switch and
vice versa. If the switch is defective then the fault will
be transferred from one circuit to the other. Replace
the faulty switch.
Lighting Switch Continuity Test
Figure G4 illustrates a test for switch continuity.
Note that terminal No. 10 is the short pin.
Before testing, separate the switch completely from
the harness and remove from headlamp. When the
switch knob is is in the "off" position, there will be
continuity between pin Nos. 1, 2 and 10, between 5
and 6 and between 8 and 9. Next rotate the switch
knob clockwise to "H" position and continuity will
occur between pin Nos. 1, 2 and 10, between 4 and 5
and between 7 and 8. Now rotate the switch knob anti-
clockwise to "L" position and continuity will occur
between pin Nos. 2, 3, 9 and 10 and between 6 and 7.
Summary of Contents for D14/4 BANTAM SUPREME D14/4 BANTAM SPORTS
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Page 28: ...D14 4 ENGINE B2 FIG B1 Engine exploded ...
Page 47: ...D14 4 CARBURETTER C2 FIG C 1 Concentric carburetter exploded ...
Page 55: ...D14 4 FRAME AND FITTINGS D2 FIG D1 Frame dimensions ...
Page 100: ...D14 4 ELECTRICAL SYSTEM G14 FIG G8 Wiring diagram all models except Bushman Pastoral ...
Page 101: ...D14 4 ELECTRICAL SYSTEM G15 FIG G9 Wiring diagram Bushman Pastoral models ...