Malaguti 500 cc 4T, Service Manual, Page: 16 / 78

15 10/07
N.B.
IF YOU NEED TO OVERHAUL THE BEARINGS ON AN ASSEMBLED DRIVEN PULLEY UNIT, IT
IS NECESSARY TO SUPPORT THE UNIT BY THE BELL
Specific tooling
001467Y002
Driver for OD 73 mm bearing
Inspecting the driven
fixed half-pulley
- Check that the belt contact surface is
free from wear.
- Measure the outer diameter of the
pulley bushing.
Characteristic
Minimum admissible diameter
49.91 mm
Standard diameter:
50.00 mm
- Remove the roller bearing using the
special tool, supporting the fixed half-
pulley with the bell.
Specific tooling
020376Y
Adaptor handle
020375Y
28 x 30 mm adaptor
020364Y
25 mm guide
001467Y002
Driver for OD 73 mm bearing
Inspecting the driven
sliding half-pulley
- Check that the belt contact surface is
free from wear.
- Remove the 2 inside sealing rings and
the 2 outside O-rings.
- Measure the movable half-pulley
bushing inside diameter.
Characteristic
Maximum admissible diameter:
50.05 mm
Standard diameter:
50.00 mm
Refitting the driven half-
pulley bearing
- Install a new roller bearing using the
special tool.
N.B.
PLACE THE BEARING WITH THE
WRITINGS AND THE EMBEDDED OIL
GUARD FACING OUTWARDS.
- Properly support the half-pulley to
prevent damaging the threading.
If you are working on the driven pulley
unit fully assembled, use the special
tool.
Specific tooling
020478Y
Punch for driven pulley roller casing
001467Y002
Driver for OD 73 mm bearing
-0,015
-0,035
+0,035
0,00