Federal Vehicles

1. REMOVE CHARCOAL CANISTER.
2. VISUALLY INSPECT CHARCOAL CANISTER.




- Look for cracks or damage.




3. CHECK FOR CLOGGED FILTER AND STUCK CHECK VALVE.
- Using low pressure compressed air 4.71 kPa (0.68 psi), blow into port A and check that air flows without resistance from the other ports.




- Blow air 4.71 kPa (0.68 psi) into port B, and check that air does not flow from the other ports.
- If operation is not as specified, replace the charcoal canister.




4. CLEAN FILTER IN CANISTER.
- Clean the filter by blowing 294 kPa (43 psi) of compressed air into port A while holding port B closed.

NOTICE:
- Do not attempt to wash the canister.
- No activated carbon should come out.

5. REINSTALL CHARCOAL CANISTER.