Gilera 633721, Workshop Manual

Page: 175 / 407

Coupling chart
COUPLING THE SEMI-SHAFTS WITH THE SEMI-CHASSIS AND BUSHES
Name Description Dimensions Initials Quantity
Half-shaft category 1 -
Bushing category B
Spare crankcase set-up
FC1 - Dis.
CM1033015001
Half-shaft category 2 -
Bushing category C
Spare crankcase set-up
FC1 - Dis.
CM1033015001
Half-shaft category 1 -
Bushing category A
Spare crankcase set-up
FC2 - Dis.
CM1033015002
Half-shaft category 2 -
Bushing category B
Spare crankcase set-up
FC2 - Dis.
CM1033015002
N.B.
FOR SERVICING WITH SPARE PARTS, MATCH THE SHAFT WITH TWO SHOULDERS OF CAT-
EGORY 1 TO CRANKCASE FC1 (OR CATEGORY 2 TO CRANKCASE FC2).
A spare crankcase cannot be combined with a driving shaft with mixed categories. Spare shafts have
half-shafts of the same category.
N.B.
TO REPLACE THE HALF-SHAFTS, REMOVE THE COUNTERSHAFT BEARINGS AS DESCRIBED
ABOVE. REMOVE THE COMPLETE DRIVEN PULLEY AND THE ANTI-FLAPPING ROLLER FROM
THE TRANSMISSION SIDE HALF-CRANKCASE, AS DESCRIBED IN CHAPTER "AUTOMATIC
TRANSMISSION", AND THE HUB COVER WITH THE RELEVANT GEARS AND BEARINGS AS
DESCRIBED IN CHAPTER "FINAL REDUCTION".
Countershaft
- Using a micrometer, measure the 2 bearings of
the countershaft as shown in the figure.
Characteristic
Standard diameter:
17 - 0.01 - 0.02 mm
- Check that the water pump drive is not worn.
Refitting the crankshaft
- Check that the oil pump and countershaft control gear are free from deformations or dents. Replace,
if required.
N.B.
IF YOU HAVE TO REPLACE THE OIL PUMP AND COUNTERSHAFT CONTROL GEAR IT IS NEC-
ESSARY TO REPLACE THE COUNTERSHAFT GEAR AS WELL.
Nexus 500 euro 3
Engine
ENG - 175