Subaru Legacy (2005 year). Manual - part 375

FU(H6DO)-53

FUEL INJECTION (FUEL SYSTEMS)

Fuel Bypass Valve

29.Fuel Bypass Valve

A: REMOVAL

1) Release the fuel pressure. <Ref. to FU(H6DO)-
39, RELEASING OF FUEL PRESSURE, PROCE-
DURE, Fuel.>
2) Disconnect the pressure regulator vacuum
hose.
3) Disconnect the fuel delivery line and return line
from fuel bypass valve.
4) Remove the fuel bypass valve from vehicle.

B: INSTALLATION

Install in the reverse order of removal.

Tightening torque:

T1: 7.5 N

⋅

m (0.76 kgf-m, 5.5 ft-lb)

T2: 1.25 N

⋅

m (0.13 kgf-m, 0.94 ft-lb)

(A) Pressure regulator vacuum hose

(B) Fuel delivery line

(C) Fuel return line

(B)

(A)

(B)

(C)

T1

T2

T1

T1

FU-02582

T2

FU(H6DO)-54

FUEL INJECTION (FUEL SYSTEMS)

Fuel Delivery, Return and Evaporation Lines

30.Fuel Delivery, Return and Evaporation Lines

A: REMOVAL

1) Set the vehicle on a lift.
2) Release the fuel pressure. <Ref. to FU(H6DO)-39, RELEASING OF FUEL PRESSURE, PROCEDURE,
Fuel.>
3) Open fuel filler flap lid, and remove fuel filler cap.
4) Remove the floor mat. <Ref. to EI-73, REMOVAL, Floor Mat.>
5) Disconnect the fuel delivery pipes and hoses, and then disconnect the fuel return pipes and hoses, evap-
oration pipes and hoses.

6) In the engine compartment, disconnect the fuel
delivery hoses, return hoses, and evaporation
hose.

7) Lift-up the vehicle.
8) Remove the fuel tank. <Ref. to FU(H6DO)-40,
REMOVAL, Fuel Tank.>

9) Separate the quick connector on fuel line.

(1) Clean the pipe and connector, if they are
covered with dust.
(2) To prevent from damaging or entering for-
eign matter, wrap the pipes and connectors with
plastic bag, etc.

(3) Hold the connector and push retainer down.
(4) Pull out the connector from retainer.

FU-02181

(A) Fuel delivery hose

(B) Evaporation hose

FU-02148

(B)

(A)

FU-01333

FU(H6DO)-55

FUEL INJECTION (FUEL SYSTEMS)

Fuel Delivery, Return and Evaporation Lines

CAUTION:
Replace new retainer.

B: INSTALLATION

1) Connect the quick connector of fuel line.

CAUTION:
• Replace new retainer.
• Make sure that the connected portion is not
damaged or has dust. If necessary, clean the
seal surface of pipe.

(1) Set the new retainer to connector.
(2) Push the pipe into the connector completely.

CAUTION:
• Pull the connector to ensure it is connected
securely.
• Ensure the two retainer pawls are engaged in
their mating positions in the connector.
• Be sure to inspect the hoses and their con-
nections for fuel leakage.

2) Connect the fuel delivery hose and return hose
to the pipe with an overlap of 20 to 25 mm (0.79 to
0.98 in).
Type A: When the amount to be inserted is speci-
fied.
Type B: When the amount to be inserted is not
specified.

2: 2.5±1.5 mm (0.098±0.059 in)
L: 22.5±2.5 mm (0.886±0.098 in)

CAUTION:
Be sure to inspect the hoses and their connec-
tions for fuel leakage.

3) Connect the evaporation hose to the pipe with
an overlap of 15 to 20 mm (0.59 to 0.79 in).

(A) Connector

(B) Retainer

(C) Pipe

(A) Seal surface

(B) Pipe

(A) Connector

(B) Retainer

(C) Pipe

FU-00124

( A )

( B )

( C )

FU-00125

( A )

( B )

FU-00126

( A )

( B )

( C )

(A) Connector

(B) Retainer

(C) Pipe

(1) Type A

(2) Type B

(3) Pipe

(4) Clamp

(5) Hose

FU-00127

( A )

( B )

( C )

(3)

(4)

(5)

L

(1)

(2)

FU-00128

FU(H6DO)-56

FUEL INJECTION (FUEL SYSTEMS)

Fuel Delivery, Return and Evaporation Lines

L = 17.5±2.5 mm (0.689±0.098 in)

C: INSPECTION

1) Make sure that there are no cracks on the fuel
pipes and fuel hoses.
2) Make sure the fuel pipe and fuel hose connec-
tions are tightened firmly.

(1) Hose

(2) Clip

(3) Pipe

FU-00129

(1)

(2)

L/2

L

(3)