48 SR 430, SR 450
7. Servicing the AV System
The blower housing and backplate
are connected by vibration-damping
springs.
Damaged springs must always be
replaced.
The anti-vibration springs are
located between the blower housing
and the backplate.
– Remove the blower housing,
SR 430 b 10.7,
SR 450 b 10.8
7.1 AV Springs at Rear of
Backplate
: Hold the AV springs (2) steady in
their seats and take out the
screws (1).
: Remove the AV springs (2).
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1
: Unscrew the bearing plugs (1)
and (2) from the AV springs.
– Screw home the bearing
plugs (1) and (2) as far as stop.
Installing
: Line up the preassembled AV
springs (1) so that the
face (arrow) is parallel to the
blower wheel.
– Push the AV springs home as far
as stop.
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2
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– Hold the AV springs (2) steady in
their seats.
: Fit and tighten down the
screws (1) firmly.
– Reassemble all other parts in the
reverse sequence.
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