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A
B
B
C
D
E
F
G
H
I
L
M
N
O
P
22
S
TEERING BEARINGS
A
The steering pin is supported on the chassis sleeve by
B
two tapered roller bearings "B".
A nut "A" screwed onto the steering pin, determines the
fitting backlash for the bearings.
A test must be carried out every 20000 km (12000 mi).
Disassembly:
•
Remove the steering head as reported in chapter 1,
section H;
•
Remove the fork, wheel and mud guard assembly;
•
Remove the steering upper bearing and the relative
washers along with the dust cover from the steering
column;
•
Remove the lower steering bearing using a special
extractor;
Check;
Before checking the dimensions, it is necessary to check
for the bearings' wear; this test must be carried out
manually with the bearing fitted in its seat.
•
Turn the inner ring in both directions: this must be
capable of turning softly and silently, without
interference.
•
Push the inner ring outwards, continually changing
position, to check if there is backlash.
•
Remove and replace the bearings which do not turn
softly and silently or which feature a backlash.
IMPORTANT
Excessive wear can cause vehicle vibrations and
instabililty.
Reassembly:
Carry out the disassembly procedures in reverse order,
bearing in mind the following:
•
When the new bearings are refitted, check that the
seat shows no signs of denting or scratching.
•
Lubricate the seat before refitting the bearing, then
push it in its seat.
•
Use a tubular punch to exert pressure only on the
external bearing ring until it is completely inserted.
IMPORTANT
Removed bearings must not be refitted.
S
M
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