- Ensure the SAS filter box is not cracked or deformed.
- Inspect the packing.
-Accurately clean external and internal filters. In the case
of break-ups or abnormal deformations, proceed with the
- Ensure the manifold channelling secondary air into the
head is not cracked, deformed, or has undergone overheats.
Replace as necessary.
- Ensure the metallic manifold is not cracked. For the reass-
embly, follow the above operations in the reverse order, ta-
king particular care in correctly installing the rubber mani-
fold connecting the SAS valve to the exhaust system.
LEAKS FROM THE MATING PLANE BETWEEN SAS VALVE
AND FLYWHEEL, RESULT IN AN INCREASE IN NOISE EMIS-
SIONS FROM THE SAS.
IF THE VEHICLE HAS RIDDEN ON DUSTY ROADS, THE AIR
FILTER MUST BE CLEANED MORE FRE- QUENTLY THAN
WHAT INDICATED IN THE SCHEDULED MAINTENANCE TA-
NEVER LET THE ENGINE RUN WITHOUT THE SECONDARY