nsxe11118a.pdf

Air Intake System
Dashpot System
Testing
1. Check the vacuum line for leaks, blockage or a
disconnected hose.
2. Disconnect the vacuum hose from the dashpot
diaphragm, and connect a vacuum pump to the
hose.
4. Connect a vacuum pump to the dashpot dia-
phragm.
VACUUM PUMP/GAUGE
A973X-041 -XXXXX
5. Apply vacuum and check that the rod pulls in and
vacuum holds.
If the vacuum does not hold or the rod does not
move, replace the dashpot diaphragm and
retest.
3. Apply vacuum and check the speed the vacuum
goes out.
Vacuum should go out slowly.
If the vacuum holds or goes out quickly, replace
the dashpot check valve and retest.