Locking - Honda Motorcycle Service Manual

GENERAL INFORMATION
Locking
TYPES OF FASTENERS
I . Lock washer (Conventional split-
ring type)
vVhen the washer is compressed
~ n d e r the bearing surface pressure,
the elasticity of the spring and the
sdges of the ring ends prevent
oosening.
2.
Self-locking nut
This is a nut w i t h a spring plate on
top. This spring plate presses
against the thread, making i t dif-
ficult for the nut t o loosen. After
removal, this type of nut can be
used again.
3. Double nut
ADJUSTING NUT
The lock nut, applied t o the ad-
justing nut from outside, presses
against the latter thus preventing
loosenina.
4.
Cone spring lock washel
CONE-TYPE
LOCK WASHER
\
The bearing surface presses on the
cone spring washer and the spring
reaction presses against the nut t o
prevent it from loosening.
APPLICATIONS
V a r i o u s points on frame
(Bolts-incorporating washers
are also available.)
.
Important points on the frame
-
PRO-Link pivot point nuts
-
Axle nuts
-
Chain adjusters
.
Cable adjusters
(Also used for removing or in-
stalling stud bolts)
Important points inside the
engine
- Clutch lock nut
- Primary gear lock nut
.
Drive sprocket center bolt
CAUTION
Do not use lock washers which have lost
their elasticitv or are deformed or eccentric.
Excessive torque will open or deform the
washer and render it useless.
Use an appropriate size for thread dia. or
hex point.
W h e n using with a plain washer, always put
the lock washer between the nut and plain
washer.
NUT
LOCK WASHER
PLAIN WASHER
A v o i d using spring plate nuts with deformed
or damaged spring plates.
T h e bolt head must be held during nut in-
stallation and removal due t o the resistance
of the nut spring plate against the bolt.
.
If the bolt length is too short, the spring
plate portion of the lock nut will not engage
with the thread fully.
- -
~-
a
Hold the adjusting nut securely and tighten
the lock nut.
Any attempt to loosen both nuts (adjusting
and lock nuts) simultaneously will damage
the bolt threads.
.
Installing in the opposite direction prevents
effective locking. Always install cone
washers with their "OUTSIDE" mark facing
out. If unmarked, install cone spring was-
hers as shown in the column at left.
Do not use if damaged or deformed.
W h e n using a lock nut chamfered on one
side, install the nut with chamfered side fac-
ing the lock washer as shown below.
Date of Issue
:
March,
1995
0
HONDA MOTOR CO.,LTD.
1-13