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Movil:959440045
5.3 MS - Check points
5 Service Instructions
58
5.3.4
Disc stack pressure
The lock ring (1) should press the bowl hood (2)
firmly against the bowl body (3). The hood in turn
should exert a pressure on the disc stack (4),
clamping it in place.
Compress the disc stack by tightening the lock
ring, see chapter
‘‘6.3.3 Bowl” on page 98
.
Correct pressure is obtained when it is possible to
tighten the lock ring so far by hand that the
I
-mark on the lock ring is positioned 60° - 90°
before the mark on the bowl hood.
To achieve this, add an appropriate number of
discs to the top of the disc stack beneath the top
disc.
Then advance the lock ring by giving the spanner
handle some blows till the
I
-marks are passed
and the bowl is fully assembled.
5.3.5
Lock ring; wear and damage
Excessive wear or impact marks on threads,
guide and contact surfaces of the lock ring, bowl
hood and bowl body may cause hazardous
galling.
Check the thread condition by tightening the lock
ring after removing the disc stack and bowl hood
O-ring from the bowl.
NOTE
Insufficient pressure in disc stack can cause
out of balance vibration and reduced lifetime
of ball bearings.
G
0
5927
21
Disc stack pressure check
G
05927
11
Add discs to achieve disc stack pressure
G
0592
411
Wear of lock ring
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