| The chain should be inspected
frequently to check for missing or damaged O-Rings, and worn/damaged components
(with particular attention to the connecting link). |
3.4 Mb |
 |
Clear signs showing
that the chain must be
replaced are:
1 Rotated pins.
2 Tight joints.
Joints are tight, the chain is excessively loose in some parts and excessively
tensioned in others. |
 |
3 The chain.
4 Noise and squealing from
the transmission.
5 Jumps and vibrations of
the chain.
To test if a chain is worn, it is necessary to measure how much it
has elongated or "stretched". |
| Place the chain under tension |
If the chain is assembled on the motorcycle, tension the upper strand
by placing the transmission in a low gear and rotate the back wheel.
If the chain is disassembled, place the chain on a flat table, securing
it at one end and applying a tension load of approx. 20 Kg (45 lbs) to the
opposite end.
|
 |
By using calipers or a precision millimeter scale, measure the distance
between two pin centers a number (N) of links apart.
WARNING
You can obtain the number (N) by counting both inner and outer
plates or simply by counting the pins. |
Check that the measured distance is not greater than the "maximum accepted
length" as indicated in the table shown below. If the distance is greater,
the chain must be replaced.
|
|
Regina ref.
|
International
ref. |
Chain
pitch |
N |
Maximum accepted
length |
| Non O-Ring |
O-Ring |
|
|
mm |
inches |
|
mm |
inches |
mm |
inches |
| 54-90-124-125-126 |
415-420-425-428 |
12,70 |
1/2” |
23 |
298,00 |
11.732” |
295,00 |
11.650” |
| 135-136-136.2-137 |
520-525-530-532 |
15,875 |
5/8” |
16 |
259,00 |
10.197” |
256,50 |
10.098” |
| 138-138.2 |
630-632 |
19,05 |
3/4” |
16 |
- |
- |
307,80 |
12.118" |
|
|
| Wear of front and rear sprockets |
A new chain, if assembled on worn or damaged sprockets, will deteriorate
quickly. Therefore, as a general rule, always replace both front and rear
sprocket when replacing the chain.
Frequently check the wear on the front and rear sprocket teeth. Examine
both the tooth profile and thickness. These components must be replaced if
there are missing or broken teeth or if they show noticeable wear or other
damage. |
 |
| |
|
|
Home page
