238261AAA SJ40 T+, SJ45 T+
54
Section 4 – Inspections Before Operation Function tests
4.3-8 Do a test of the positive air shut-off
switch (optional equipment)
CAUTION
Do not do this function test while the engine is on.
1. Open the engine compartment cover.
2. Lift the switch guard for the positive air shut-off
on the engine control console.
3. Move the positive air shut-off switch
9
to the
on position to engage the shut-off valve
11
.
4. Move the positive air shut-off switch to the off
position to disengage the shut-off valve
12
. The
light
10
continuously illuminates.
▪
Result: The shut-off valve disengages after 20
seconds.
5. Make sure the positive air shut-off switch is
put back to the off position, and that the switch
guard is down. Close the engine compartment
cowling.
12
109 11
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