1999 SUBARU LEGACY rear

2. CYLINDER BLOCK
B2M2408A
(1) Cylinder block
(2) Rear oil seal(3) Crankshaft
(4) Crankshaft bearing(5) Piston
1) Set up cylinder block so that #1 and #3 cylin-
ders are on the upper side, then remove cylinder
block connecting bolts.
2) Separate left-hand and right-hand cylinder
blocks.
CAUTION:
When separating cylinder block, do not allow
the connecting rod to fall and damage the cyl-
inder block.
3) Remove rear oil seal.
4) Remove crankshaft together with connecting
rod.5) Remove crankshaft bearings from cylinder
block using hammer handle.
CAUTION:
Do not confuse combination of crankshaft
bearings. Press bearing at the end opposite to
locking lip.
6) Draw out each piston from cylinder block using
wooden bar or hammer handle.
CAUTION:
Do not confuse combination of piston and cyl-
inder.
54
2-3b[W5B2]SERVICE PROCEDURE
5. Cylinder Block

2. CYLINDER BLOCK
B2M2407A
(1) Crankshaft bearing
(2) Crankshaft
(3) Cylinder block(4) Rear oil sealTightening torque: N´m (kg-m, ft-lb)
T1:
25±2 (2.5±0.2, 18.1±1.4)
T2:47±3 (4.8±0.3, 34.7±2.2)
1) Install ST to cylinder block, then install crank-
shaft bearings.
ST 499817000 ENGINE STAND
CAUTION:
Remove oil the mating surface of bearing and
cylinder block before installation. Also apply a
coat of engine oil to crankshaft pins.
2) Position crankshaft on the #2 and #4 cylinder
block.3) Apply fluid packing to the mating surface of #1
and #3 cylinder block, and position it on #2 and #4
cylinder block.
Fluid packing:
THREE BOND 1215 or equivalent
CAUTION:
Do not allow fluid packing to jut into O-ring
grooves, oil passages, bearing grooves, etc.
G2M0185
64
2-3b[W5D2]SERVICE PROCEDURE
5. Cylinder Block

4) Temporarily tighten 10 mm cylinder block con-
necting bolts in alphabetical sequence shown in
figure.
B2M0088D
5) Tighten 10 mm cylinder block connecting bolts
in alphabetical sequence.
Tightening torque:
47
±3 N´m (4.8±0.3 kg-m, 34.7±2.2 ft-lb)
B2M0088D
6) Tighten 8 mm and 6 mm cylinder block connect-
ing bolts in alphabetical sequence shown in figure.
Tightening torque:
(A) Ð (G): 25
±2 N´m (2.5±0.2 kg-m,
18.1
±1.4 ft-lb)
(H): 6.4 N´m (0.65 kg-m, 4.7 ft-lb)
B2M0089F
7) Install rear oil seal by using ST1 and ST2.
ST1 499597100 OIL SEAL GUIDE
ST2 499587200 OIL SEAL INSTALLER
G2M0186
65
[W5D2]2-3bSERVICE PROCEDURE
5. Cylinder Block

1. Oil Pump
A: REMOVAL
1) Disconnect battery ground cable.
G6M0095
2) Lift-up the vehicle.
3) Remove under cover.
B2M0014
4) Drain coolant.
B2M0015A
5) Remove radiator.
S2M0033
6) Lower the vehicle.
7) Remove crankshaft position sensor.
B2M1252A
8) Remove camshaft position sensor.
G2M0417
9) Remove V-belts.
G2M0286
10) Remove rear side V-belt tensioner.
S2M0113
6
2-4[W1A0]SERVICE PROCEDURE
1. Oil Pump

5) Disconnect front oxygen sensor connector.
B2M1979A
S2M0127A
6) Disconnect rear oxygen sensor connector.
(2500 cc California spec. vehicles)
S2M0128
7) Remove pitching stopper.
G2M0295
8) Remove radiator upper bracket.
B2M0320
9) Support engine with a lifting device and wire
ropes.
B2M0053
10) Lift-up the vehicle.
CAUTION:
At this time, raise up wire ropes.
11) Remove under cover.
B2M0014
11
[W2A0]2-4SERVICE PROCEDURE
2. Oil Pan and Oil Strainer

12) Drain engine oil.
Set container under the vehicle, and remove drain
plug from oil pan.
G2M0066
13) Disconnect connector from rear oxygen sen-
sor. (Except 2500 cc California spec. vehicles)
B2M0312
14) Remove front exhaust pipe.
(1) Separate front catalytic converter from cen-
ter exhaust pipe.
B2M0421
(2) Remove front exhaust pipe from engine.
S2M0236
(3) Remove bolt which installs front exhaust
pipe on bracket.
15) Remove nuts which install front cushion rub-
ber onto front crossmember.
G2M0293
16) Remove bolts which install oil pan on cylinder
block while raising up engine.
B2M2687A
S2M0131A
17) Insert oil pan cutter blade between cylinder
block-to-oil pan clearance.
CAUTION:
Do not use a screwdriver or similar tool in
place of oil pan cutter.
12
2-4[W2A0]SERVICE PROCEDURE
2. Oil Pan and Oil Strainer

8) Connect connector to rear oxygen sensor.
(Except 2500 cc California spec. vehicles)
B2M0312
9) Install under cover.
B2M0014
10) Lower the vehicle.
CAUTION:
At this time, lower lifting device and release
steel cables.
11) Remove lifting device and steel cables.
B2M0053
12) Connect connector to front oxygen sensor.
B2M1979A
S2M0127A
13) Connect connector to rear oxygen sensor.
(2500 cc California spec. vehicles)
S2M0128
14) Install pitching stopper.
Tightening torque:
T1: 49
±5 N´m (5.0±0.5 kg-m, 36.2±3.6 ft-lb)
T2: 57
±10 N´m (5.8±1.0 kg-m, 42±7 ft-lb)
G2M0302
15
[W2C0]2-4SERVICE PROCEDURE
2. Oil Pan and Oil Strainer

8. Rear Oxygen Sensor
A: REMOVAL
1. 2200 cc CALIFORNIA SPEC. VEHICLES
1) Disconnect battery ground cable.
B2M1723
2) Disconnect connector from rear oxygen sensor.
S2M0128
3) Lift-up the vehicle.
4) Apply SUBARU CRC or its equivalent to
threaded portion of rear oxygen sensor, and leave
it for one minute or more.
SUBARU CRC (Part No. 004301003)
5) Remove rear oxygen sensor.
CAUTION:
When removing, do not force rear oxygen sen-
sor in an unnatural way especially when
exhaust pipe is cold, otherwise it will damage
exhaust pipe.
B2M0741
2. EXCEPT 2200 cc CALIFORNIA SPEC.
VEHICLES
1) Disconnect battery ground cable.
B2M1723
2) Lift-up the vehicle.
3) Disconnect connector from rear oxygen sensor.
B2M0335
4) Apply SUBARU CRC or its equivalent to
threaded portion of rear oxygen sensor, and leave
it for one minute or more.
SUBARU CRC (Part No. 004301003)
5) Remove rear oxygen sensor.
CAUTION:
When removing, do not force rear oxygen sen-
sor in an unnatural way especially when
exhaust pipe is cold, otherwise it will damage
exhaust pipe.
B2M0351
65
[W8A2]2-7SERVICE PROCEDURE
8. Rear Oxygen Sensor