Subaru Legacy (2005 year). Manual - part 283

ME(H4DOTC)-75

MECHANICAL

Cylinder Block

12) Install the rear oil seal using ST1 and ST2.
ST1

499597100

CRANKSHAFT OIL SEAL 
GUIDE

ST2

499587200

CRANKSHAFT OIL SEAL IN-
STALLER

13) Position the top ring gap at (A) or (B) in the fig-
ure.
14) Position the second ring gap at 180

° on the re-

verse side for the top ring gap.

15) Position the upper rail gap at (C) in the figure.

16) Align the upper rail spin stopper (E) to the side
hole (D) on the piston.

17) Position the expander gap at 180

° on the re-

verse side of (C) that shown (F) in the figure.

18) Position the lower rail gap at 120

° clockwise of

(C) that shown (G) in the figure.

CAUTION:
• Ensure ring gaps do not face the same direc-
tion.
• Ensure ring gaps are not within the piston
skirt area.

(A) Rear oil seal

(B) Flywheel attaching bolt

ME-00148

ST1

ST2

(B)

(A)

ME-00718

(A)

(B)

ME-02087

(C)

25

ME-02392

(E)

(D)

ME-02088

(F)

ME-02089

120

(C)

(G)

ME(H4DOTC)-76

MECHANICAL

Cylinder Block

19) Install the snap ring.
Install snap rings in the piston holes located oppo-
site to the service holes in cylinder block, when po-
sitioning all pistons in the corresponding cylinders.

NOTE:
Use new snap rings.

(A) Forward

ME-00154

#4

#3

#2

#1

(A)

(1)

Piston

(4)

Gasket

Tightening torque: N

⋅

m (kgf-m, ft-lb)

(2)

Piston pin

(5)

Service hole plug

T: 70 (7.1, 51.6)

(3)

Snap ring

ME-00155

(1)

(1)

(2)

(2)

(3)

(3)

(4)

(4)

(5)

(5)

T

ME(H4DOTC)-77

MECHANICAL

Cylinder Block

20) Installation of piston:

(1) Place the #1 and #2 cylinder side upward.
(2) Using the ST1, turn the crankshaft so that
#1 and #2 connecting rods are set at bottom
dead center.

ST1

499987500

CRANKSHAFT SOCKET

(3) Apply a coat of engine oil to the pistons and
cylinders and insert pistons in their cylinders us-
ing ST2.

ST2

398744300

PISTON GUIDE

NOTE:
Piston front mark faces towards the front of engine.

21) Installing piston pin:

(1) Apply a coat of engine oil to ST3 before in-
sertion, and then insert it into the service hole to
align piston pin hole with connecting rod small
end.

ST3

499017100

PISTON PIN GUIDE

(2) Apply a coat of engine oil to piston pin, and
insert the piston pin into piston and connecting
rod through service hole.
(3) Install the snap ring.

NOTE:
Use new snap rings.

(4) Apply liquid gasket around the service hole
plug.

Liquid gasket:

THREE BOND 1215 (Part No. 004403007) or 
equivalent

(5) Install the service hole plug and gasket.

NOTE:
Use a new gasket.

(A) Front mark

ME-00157

ST2

ST1

ME-00722

(A)

ME-00158

ST1

ST3

ME-00159

ME-00160

ME-00140

ME(H4DOTC)-78

MECHANICAL

Cylinder Block

(6) Place the #3 and #4 cylinder side upward.
Following the same procedures as used for #1
and #2 cylinders, install the pistons and piston
pins. 

22) Install the water pipe.
23) Install the baffle plate.

Tightening torque:

6.4 N

⋅

m (0.65 kgf-m, 4.7 ft-lb)

24) Install the oil strainer and O-ring.

Tightening torque:

10 N

⋅

m (1.0 kgf-m, 7.4 ft-lb)

25) Install the oil strainer stay.

26) Apply liquid gasket to the mating surfaces, and
install the oil pan.

Liquid gasket:

THREE BOND 1207C (Part No. 004403012) or 
equivalent

Tightening torque:

5 N

⋅

m (0.5 kgf-m, 3.7 ft-lb)

(1)

Piston

(5)

Service hole plug

Tightening torque: N

⋅

m (kgf-m, ft-lb)

(2)

Piston pin

(6)

Service hole cover

T1: 6.4 (0.65, 4.7)

(3)

Snap ring

(7)

O-ring

T2: 70 (7.1, 51.6)

(4)

Gasket

(1)

(2)

(3)

(1)

(2)

(6)

(3)

(7)

(4)

(5)

ME-00161

T2

T1

ME-00162