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When
you need a spare part for your bike, it can often prove to be quite a
difficult task to get the correct
one. With new Jawa’s not available here in the UK, the old dealer network
has collapsed, which now means that any spares we require are usually
obtained by mail order. In the UK Mick
Berrill’s is the primary source of new spares and Pauline who looks
after the Jawa spares side has a vast wealth of knowledge regarding parts
for the various models, but if you know the part number quoted in the spares
manual then life can be so much easier not only for her but also for yourself.
Pete
Edwards has some spare parts catalogues with part numbers in, and the Club
Librarian Arthur Fleming
can usually provide a copy of the parts list for
your particular model (for a small cost).
MZ-B
in Berlin have probably become that largest mail-order company for old
Jawa and CZ parts, and I know that they send parcels all over the world. The
information below regarding how Jawa-CZ parts originate has been taken from
their website, and I thank them for letting me use it.
JAWA
have used since the beginning of the 1950's a unified system for parts
numbering. This is as follows:-
3
digits show type.
2
digits show parts group.
3
digits name part.
e.g.
353 51 353 brake drum front.
As
not all parts are changed when there was a model change, bikes of a later
model may well use the same
parts as earlier models. A JAWA 640, produced in 2001 has for example a part
151 22 021 (a securing washer). This parts has not been changed since Perak
models, produced in 1945. It also happens that some parts show types of
motorcycle which never actually reached production. It could be that the
type of engine or parts developed was for a model which was never produced,
but which were later used on other models. As JAWA started production of the
first Perak immediately after the war, standardization of parts between
models was a keyword. It even
influenced numbering. However it soon showed that these numbers were too
short to encompass all types, so the system was changed. This change was
however as shown below.
(e.g.)
Perak type 11 became type 151, type 18 became 158 and type 12 became (for whatever reason 150). The 4 stroke type 15
was renamed 155.
Example:
the piston ring for Perak is in the old catalogue part 101215. This was
changed in the 1950's to 150 12 015. This number is the one still used
today.
So
it’s quite easy to see why occasionally when just asking for a certain
engine capacity part, that
the wrong part version could be delivered to you. So wherever possible, get
to know the part numbers for your particular model. It could save you a lot of frustration. Source Swindon Smoke
Signals
(I
hate to spoil this for readers but some identical parts have different
numbers).
By
Pete Edwards
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