Contact Breaker Setting; High Tension - Triumph SPEED TWIN 1945 Workshop Instruction Manual

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Distributor
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C l e a n i n g : E v e r y
6,000
m i l e s
(10,000 krns.)
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Remove t h e distributor cover and wipe
it
inside and outside w i t h a clean dry fluffless
cloth.
Examine t h e contact breaker.
The contacts u s be free from r e o r oil. If
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they are burned o r blackened, clean w i t h fine carborundum stone o r very fine
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emery cloth, afterwards wiping away any d i r t o r metal dust w i t h a clean petrol
moistened cloth.
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The contact breaker setting should be checked after the
f i r s t
500 miles
(803
kms.)
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running and subsequently every 6.000 miles (10,000 kms.). T o check the gap. t u r n
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t h e engine over slowly u n t i l the contacts are seen t o be fully open and insert a
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0.014"-0.016" (0.36 t o 0.4 rnm.) feeler gauge between t h e contacts.
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If the gap w i d t h i s correct, the gauge w i l l be a sliding fir.
I f the gap width varies
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appreciably from the gauge thickness, the setting must be adjusted.
T o do this.
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keep the engine i n the position giving the maximum contact opening and slacken
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t h e screw at t h e side of t h e u n i t b3dy. Slide th,e fixed contact carrier i n t o
i t s
slotted
hole until the correct gap i s obtained.
Re-tighten the screw.
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If t h e high tension cables show signs of perishing o r cracking, they should be replaced
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using a
7
mm. 'rubber covered ignition cable.
T o d o this, remove the metal washer
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and moulded n u t from the defective cable.
Thread the new cable through the
moulded n u t and bare the conductor for about a! inch (6 rnm.).
Pass t h e exposed
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strands through the metal washer and bend back t h e strands radially. Re-fit the
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moulded n u t i n t o the
H.T.
terminal. O n the m2dels ST
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bT t h e H.T. cable for the
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coil t o distributor should also be treated i n
a
similar manner.
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