Royal Enfield CONSTELLATION 1958, Руководство по техническому обслуживанию мастерской

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Section H5 Page 2
1. Description of Frame
The frame is built throughout of cold
drawn weldless steel tubing with brazed or
welded joints, liners being fitted where
necessary for extra strength. All the main
frame
members are made of
chromemolybdenum alloy steel tubing which
retains its strength and resistance to fatigue
after brazing or welding.
The swinging arm unit which forms the
chain stays is fitted with large diameter
phosphor bronze bushes and pivots on a stout
steel tube which is secured to the main frame
by a long bolt passing through the pivot lugs.
Hardened steel thrust washers are provided to
deal with side thrust. The torsional rigidity of
the swinging arm unit helps to maintain the
rear wheel upright in the frame and thus
relieves the wheel spindle of bending stresses
to which it is subject with other types of rear
suspension.
2. Steering Head Races
The steering head races, 34085, are the
same at the top and bottom of the head lug and
are the same for all models. They are easily
removed by knocking them out with a hammer
and drift and new races can be fitted either
under a press or by means of a hammer and a
wooden drift.
3. Removal of Rear Suspension unit
On the "Constellation" and "Super Meteor"
from 1961 onwards, the valances on either side
of the frame must be removed to gain access to
the top pivot pin. See Section C, paragraph 8.)
The procedure for all models is then as
follows: Remove the top pivot pin nut, drive
out the pivot pin, then hinge the suspension
unit back on the lower pivot pin. After
removing the lower nut, the unit may be
pushed off the pivot pin welded to the fork
end.
4. Servicing Rear Suspension Units
The proprietary units fitted are sealed and
servicing of the internal mechanism can be
carried out only by the manufacturers.
The rubber bushes in the top and bottom
eyes can easily be renewed and the spring can
be removed by pushing down on the top spring
cover so as to release the split collar above it.
After removal of the split collar the top cover
and spring can be lifted off. When
reassembling, the spring should be greased to
prevent rust and squeaking if it should come
into contact with either of the covers.
The standard solo springs have a rate of
100 - 105 lb. per inch and it is not difficult to
compress these by hand. Heavier springs
having a rate of 130 lb. per inch are available
which may require the use of a spring
compressor, as shown in Fig. 2.
5. Removal of Swinging Arm Chain Stays
First remove one of the pivot pin nuts and
pull the pivot pin out from the other end. To
release the pivot bearing it is necessary to spread
the rear portion of the frame, using the frame
expander E.5431, which will spread the frame
sufficiently to enable the spigots on the thrust
washers to clear the recesses in the pivot lugs
forming part of the frame.
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