Subaru Legacy III (2000-2003 year). Manual - part 434

EX(H4DOSTC)-4

EXHAUST

GENERAL DESCRIPTION

B: CAUTION

• Wear working clothing, including a cap, protec-
tive goggles, and protective shoes during opera-
tion.
• Remove contamination including dirt and corro-
sion before removal, installation or disassembly.
• Keep the disassembled parts in order and pro-
tect them from dust or dirt.
• Before removal, installation or disassembly, be
sure to clarify the failure. Avoid unnecessary re-
moval, installation, disassembly, and replacement.
• Be careful not to burn your hands, because each
part on the vehicle is hot after running.
• Be sure to tighten fasteners including bolts and
nuts to the specified torque.
• Place shop jacks or safety stands at the specified
points.
• Before disconnecting electrical connectors of
sensors or units, be sure to disconnect the ground
cable from battery.

EX(H4DOSTC)-5

EXHAUST

FRONT EXHAUST PIPE

2. Front Exhaust Pipe

A: REMOVAL

1) Disconnect the ground cable from battery.

2) Disconnect the connector from front oxygen (A/
F) sensor.
3) Remove the exhaust manifold cover (RH).

4) Remove the exhaust manifold covers (LH).

5) Remove the bolts and nuts which hold front ex-
haust pipe assembly to turbocharger joint pipe.

6) While holding the front exhaust pipe assembly
with one hand, remove the nuts which hold front ex-
haust pipe assembly to cylinder head exhaust port.

7) Remove the front exhaust pipe assembly.
8) Remove the covers from the exhaust manifold
and front exhaust pipe.
9) Separate the front exhaust pipe from exhaust
manifolds.

B: INSTALLATION

NOTE:
Replace the gaskets with new ones.
1) Assemble the front exhaust pipe and exhaust
manifolds.

Tightening torque:

35 N·m (3.6 kgf-m, 26.0 ft-lb)

2) Install the front exhaust pipe assembly.

Tightening torque:

40 N·m (4.0 kgf-m, 28.9 ft-lb)

FU-00009

EX-00075

EX-00076

EX-00077

EX-00078

EX-00078

EX(H4DOSTC)-6

EXHAUST

FRONT EXHAUST PIPE

3) Connect the exhaust manifold to turbocharger
joint pipe.

Tightening torque:

35 N·m (3.6 kgf-m, 26.0 ft-lb)

4) Install the exhaust manifold covers (LH).

Tightening torque:

19 N·m (1.9 kgf-m, 13.7 ft-lb)

5) Install the lower exhaust manifold cover (RH).

Tightening torque:

19 N·m (1.9 kgf-m, 13.7 ft-lb)

6) Connect the connector to front oxygen (A/F)
sensor.
7) Install the under cover.

8) Connect the battery ground cable to battery.

EX-00077

EX-00076

EX-00075

FU-00009

EX(H4DOSTC)-7

EXHAUST

CENTER EXHAUST PIPE

3. Center Exhaust Pipe

A: REMOVAL

1) Set the vehicle on the lift.
2) Disconnect the ground cable from battery.
3) Remove the intercooler. 

<Ref. to IN(H4DOSTC)-

13, 

REMOVAL, Intercooler.>

4) Lift-up the vehicle.
5) Remove the under cover.
6) Remove the bolts which install lower side of tur-
bocharger cover (RH).

CAUTION:
Be careful, the turbocharger cover and exhaust 
pipe are hot.

7) Remove the bolts which install lower side of tur-
bocharger cover (LH).

8) Lower the vehicle.
9) Remove the turbocharger cover (RH).

10) Remove the turbocharger cover (LH).

11) Separate the center exhaust pipe (RH) from
secondary turbocharger.

12) Separate the center exhaust pipe (LH) from pri-
mary turbocharger.

13) Lift-up the vehicle.

EX-00079

EX-00080

EX-00081

(A) Center exhaust pipe (RH)

(B) Secondary turbocharger

(A) Center exhaust pipe (LH)

(B) Primary turbocharger

EX-00082

(A)

(B)

EX-00083

EX-00084

(A)

(B)