Toyota RM787U, Руководство по обслуживанию и ремонту

Страница: 1062 / 1976

B06547
Fuel Tank Cap
B12648
Air
EVAP Line Hose
B12649
EVAP Line Hose
Air
Purge Port
Plug Purge
Line Hose
EC-8
- EMISSION CONTROL EVAPORATIVE EMISSION (EVAP) CONTROL SYSTEM
1068
Author: Date:
2001 SIENNA (RM787U)
(3) Check if the pressure decreases when the fuel tank
cap is removed while adding pressure.
HINT:
If the pressure does not decrease when the filler cap is re-
moved, then you can conclude that the hose connecting the
service port to the fuel tank is blocked, etc.
(k)
Disconnect the pressure gauge from the EVAP service
port on the purge line.
5. CHECK AIRTIGHTNESS IN FUEL TANK AND FILLER
PIPE
(a) Disconnect the EVAP line hose from the charcoal canister
side and then pressurize and make the internal pressure
in the fuel tank 4 kPa (41 gf/cm
2
, 0.58psi)
(b) Check that the internal pressure of the fuel tank can be
hold for 1 minute.
(c) Check the connected portions of each hose and pipe.
(d) Check the installed parts on the fuel tank.
if there is no abnormality, replace the fuel tank and filler pipe.
(e)
Reconnect the EVAP line hose to the charcoal canister.
6. INSPECT FUEL CUTOFF VALVE AND FILL CHECK
VALVE
(a) Disconnect the purge line hose and EVAP line hose front
the charcoal canister.
(b) Plug the cap to the air drain hose.
(c) Pressurize 4 kPa (41 gf/cm
2
, 0.58psi) to the purge port
and check that there is ventilation through the EVAP line
hose.
HINT:
In the condition that the fuel fuel is full, as the float valve of the
fill check valve is closed and has no ventilation, it is necessary
to check the fuel amount (volume).
(d)
Check if there is any struck in the vent line hose and EVAP
line hose.
If there is no struck in hoses, replace the fuel cutoff valve and
fill check valve.
(e)
Reconnect the purge line hose and EVAP line hose to the
charcoal canister.