Checking The Slack - APRILIA RSV mille 956X Service And Repair Manual

RSV mille
 $2)6% #(!).
Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS).
Check and, where necessary, lubricate every 1000 km
(625 mi).
The vehicle is equipped with an endless chain, in which a
ring link joint is not used.
Chain type: 525
a
CAUTION
The drive chain is provided with O rings among the
links, in order to keep the grease inside them.
Carry out the adjustment, lubrication, cleaning and
change of the chain with great care.
Position the vehicle on the appropriate rear support
&
stand .
Position the shifting lever in neutral.
Turn the rear wheel slowly by
Further, check the chain and sprockets and make sure
that they do not present:
– damaged rollers;
– loose pins;
– dry, rusty, crushed or seized links;
– excessive wear;
– lacking O rings;
– sprocket or teeth excessively worn or damaged.
a
CAUTION
If the chain rollers are damaged, the pins are loose
and/or the O rings are damaged or lacking, it is nec-
essary to change the whole chain unit (both sprock-
ets and chain), see 7.3.2 (DISASSEMBLING THE FI-
NAL DRIVE UNIT).

2.35.1 CHECKING THE SLACK

To check the slack, proceed as follows:
Position the vehicle on the appropriate rear support
&
stand .
Position the shifting lever in neutral.
Make sure that the vertical oscillation, in an intermedi-
ate point between pinion and crown in the lower part of
the chain, is about 25 mm.
Move the vehicle forwards, or turn the wheel, in order to
be able to check the vertical oscillation of the chain
even when the wheel turns; the slack must be constant
in all the rotation phases of the wheel.
a
CAUTION
If in some positions the slack is higher than in others,
this means that there are crushed or seized links.
To prevent the risk of seizures, lubricate the chain fre-
quently, see 2.35.4 (CLEANING AND LUBRICATION).
If the slack is uniform, but higher or lower than 25 mm,
adjust it, see 2.35.3 (ADJUSTMENT).
a
CAUTION
An excessive slackening of the chain may cause
noise or make the chain rattle, with consequent wear
of the shoe and of the chain guide plate.
Incorrect maintenance may cause the untimely wear
of the chain and/or damages to the pinion and/or the
crown.
Carry out the maintenance operations more frequent-
ly if you use the vehicle in difficult conditions or on
dusty and/or muddy roads.
hand.
SERVICE AND SETTING UP
25 mm 25 mm
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