Royal Enfield CO, Руководство по техническому обслуживанию мастерской

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ROYAL ENFIELD 350cc O.H.V. WORKSHOP MANUAL
Page 29
LIGHTING AND IGNITION SYSTEM
MAGNETO (LUCAS Magdyno Model M01-4, Type
L1 or Model M01-6, Type LI).
54. Lubrication of Contact Breaker Mechanism.
The cam is lubricated by a wick contained in the
contact breaker base, which must be given a few drops
of thin machine oil. To get at the wick, remove the
spring arm carrying the moving contact and withdraw
the screw carrying the wick. At the same time remove
the tappet which operates the contact breaker spring,
and lightly smear with thin machine oil; when
replacing, see that the small backing spring is fitted
immediately under the securing screw and spring
washer and that the bent portion faces outward. See
Fig. 41.
55. Cleaning Contact Breaker.
Remove the contact breaker cover and examine
the contacts. If they are dirty, they must be cleaned by
polishing with a fine carborundum stone or very fine
emery cloth ; afterwards wipe away any dirt or metal
dust with a petrol-moistened cloth. Cleaning of the
contacts is made easier if the spring arm carrying the
moving contact is removed as described above.
CONTACT BREAKER MECHANISM,
COVER REMOVED
Fig. 41
Examine the spring arm of the contact breaker
and wipe away any rust.
56. Adjustment of Contact Breaker.
To check the contact setting, turn the engine until
the contacts are fully opened and insert the gauge
provided on the magneto spanner, .012 in.to .015 in.,
between the contacts; if the setting is correct, the
gauge should be a sliding fit. If there is an appreciable
variation from the gauge, slacken the lock nut and turn
the contact screw by its hexagon head, until the gap is
set to the gauge. Finally tighten the lock nut.
57. H.T. Cable.
This should be 7 m.m. in diameter. Other sizes,
such as 5 m.m. and 9 m.m. will not fit in the
immobilizer and suppressor. The cable must be
replaced if the rubber insulation has perished or shows
cracks and has become brittle.
58. H.T. Pick-Up.
Examine the pick-up or high tension terminal
(magneto end). See that the carbon brush moves
freely in its holder, being careful not to stretch the
brush spring unduly. While the pick-up is removed,
clean the slip ring track and flanges by holding a soft
PICK-UP, MOULDED NUT REMOVED TO SHOW
METHOD OF MAKING CONNECTION
Fig. 42
cloth on the ring while the engine is slowly turned by
hand. To fit new cable (see Fig. 42) thread the knurled
moulded nut over the lead, bare the cable for about ¼
in., thread the wire through the metal washer removed
from the old cable, and bend back the strands. Finally
screw the nut into its terminal.
59. Suppressor and Immobilizer.
Check for cracks in insulation, check for positive
contacts of H.T. wire; always disconnect lead at spark
plug end before unscrewing immobilizer. See that
lead is arranged so that immobilizer is clear of metal
parts of machine.
60. Magneto Drive.
The magneto drive is by gears enclosed in the
engine timing case. These are automatically
lubricated and require no attention or adjustment.
ASSEMBLY OF FELT GLAND
FOR MAGDYNO SPINDLE
Fig. 43
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