APRILIA 8140172, Руководство по обслуживанию и ремонту

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ENGINE
RSV mille
3 - 70
3.6.26 UPPER COUNTERSHAFT
Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS).
◆ Check the countershaft for wear.
NOTE
The bush housing (1) is slightly tapered, hence
the measurement must be taken half way along the hous-
ing.
– Bush housing (1):
wear limit: min. Ø 34.98 mm;
– Ball bearing pin (2):
wear limit: min. Ø 14.97 mm.
NOTE
The bush (3) is slightly tapered.
◆ Check the internal diameter (3) of the bushes in the
plate and check for wear or cracks.
NOTE
Install the countershaft and measure the radial
play with a comparator.
◆ Measure the radial play of the bush.
Max. permissible radial play 0.70 mm.
◆ If the maximum permissible radial play is exceeded, the
worn part must be replaced.
NOTE
Should the bushes be worn, the whole bush
plate must be replaced.
◆ Install the countershaft in the head (2) (rear) and meas-
ure the end play with a comparator.
Wear limit: max. 0.040 mm.
NOTE
If the end play wear limit is exceeded, replace
the bush plate.
◆ Install the countershaft in head “2”, see 3.7.12 [AS-
SEMBLING HEAD “2” (REAR) CAMSHAFT].
◆ Make sure the ball bearing (4) in the U bolt slides
smoothly and does not feature pitting, and check slack.
NOTE
Oil the ball bearings with motor oil before per-
forming the check.
If the inner race does not turn easily and silently, or if it
makes a noise, it means the bearing is defective and
needs replacing.
◆ Check the oil seal (5) behind the ball bearing (4) for any
wear or signs of damage.