Subaru Legacy (2005 year). Manual - part 173

FU(H4SO 2.5)-55

FUEL INJECTION (FUEL SYSTEMS)

Fuel Damper Valve

30.Fuel Damper Valve

A: REMOVAL

1. DELIVERY SIDE

1) Release the fuel pressure. <Ref. to FU(H4SO
2.5)-41, RELEASING OF FUEL PRESSURE,
PROCEDURE, Fuel.>
2) Remove the fuel damper valve from fuel delivery
line.

2. RETURN SIDE

Fuel damper valve forms a unit with fuel injector
pipe RH.
Refer to “Intake Manifold” for removal. <Ref. to
FU(H4SO 2.5)-15, DISASSEMBLY, Intake Mani-
fold.>

B: INSTALLATION

1. DELIVERY SIDE

Install in the reverse order of removal.

Tightening torque:

1.25 N

⋅

m (0.13 kgf-m, 0.94 ft-lb)

2. RETURN SIDE

Fuel damper valve forms a unit with fuel injector
pipe RH.
Refer to “Intake Manifold” for installation. <Ref. to
FU(H4SO 2.5)-17, ASSEMBLY, Intake Manifold.>

FU-01147

FU(H4SO 2.5)-56

FUEL INJECTION (FUEL SYSTEMS)

Fuel Delivery, Return and Evaporation Lines

31.Fuel Delivery, Return and Evaporation Lines

A: REMOVAL

1) Set the vehicle on a lift.
2) Release the fuel pressure. <Ref. to FU(H4SO 2.5)-41, RELEASING OF FUEL PRESSURE, PROCE-
DURE, Fuel.>
3) Open the fuel filler flap lid, and remove the 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.

FU-01148

FU(H4SO 2.5)-57

FUEL INJECTION (FUEL SYSTEMS)

Fuel Delivery, Return and Evaporation Lines

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(H4SO 2.5)-
42, 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 (A) and push retainer (B)
down.

(4) Pull out the connector (A) from retainer (B).

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 (B) to connector (A).

(A) Fuel delivery hose

(B) Return hose

(C) Evaporation hose

FU-01088

(A)

(B)

(C)

FU-01333

(A) Connector

(B) Retainer

(C) Pipe

(A) Seal surface

(B) Pipe

FU-00124

( A )

( B )

( C )

FU-00125

( A )

( B )

FU(H4SO 2.5)-58

FUEL INJECTION (FUEL SYSTEMS)

Fuel Delivery, Return and Evaporation Lines

(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 fuel 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 mm (0.59 in).

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.

(A) Connector

(B) Retainer

(C) Pipe

(A) Connector

(B) Retainer

(C) Pipe

FU-00126

( A )

( B )

( C )

FU-00127

( A )

( B )

( C )

(1) Type A

(2) Type B

(3) Pipe

(4) Clamp

(5) Hose

(1) Hose

(2) Clip

(3) Pipe

(3)

(4)

(5)

L

(1)

(2)

FU-00128

FU-00129

(1)

(2)

L/2

L

(3)