1999 SUBARU LEGACY Service Repair Manual

2) Release motor harness from shroud.
B2M2048
3) Remove bolts which install fan motor onto
shroud.
B2M2055
4) Assembly is in the reverse order of disassem-
bly.
Tightening torque:
4.4
±0.5 N´m (0.45±0.05 kg-m, 3.3±0.4 ft-lb)
B2M2055
8. Water Pipe
A: REMOVAL
1) Release fuel pressure.

2) Disconnect ground cable from the battery.
G6M0095
3) Drain engine coolant completely.

B2M0015A
4) Remove intake manifold.

B2M0160
23
[W8A0]2-5SERVICE PROCEDURE
8. Water Pipe

5) Disconnect heater inlet hose.
B2M0138
6) Disconnect radiator inlet hose from water pipe.
B2M0139
7) Remove bolts which install water pipe on cylin-
der block.
B2M0141
B: INSTALLATION
1) Install water pipe on cylinder block.
Tightening torque:
6.4
±0.5 N´m (0.65±0.05 kg-m, 4.7±0.4 ft-lb)
CAUTION:
Use a new O-ring.
B2M0141
2) Connect radiator inlet hose.
B2M0139
3) Connect heater inlet hose.
B2M0138
24
2-5[W8B0]SERVICE PROCEDURE
8. Water Pipe

9. Reservoir Tank
A: REMOVAL AND INSTALLATION
1) Disconnect over flow hose from radiator filler
neck position.
B2M2056
2) Remove bolts which install reservoir tank onto
radiator main fan shroud.
B2M2042
3) Remove reservoir tank.
S2M0028
4) Installation is in the reverse order of removal.
Tightening torque:
7.4
±2.0 N´m (0.75±0.20 kg-m, 5.4±1.4 ft-lb)
B2M2042
25
[W9A0]2-5SERVICE PROCEDURE
9. Reservoir Tank

1. Engine Cooling System Trouble in General
TroubleCorrective action
Over-heatinga. Insufficient engine coolantReplenish engine coolant, inspect for leakage, and
repair.
b. Loose timing belt Repair or replace timing belt tensioner.
c. Oil on drive belt Replace.
d. Malfunction of thermostat Replace.
e. Malfunction of water pump Replace.
f. Clogged engine coolant passage Clean.
g. Improper ignition timingInspect and repair ignition control system.
On-Board Diagnostics II System
h. Clogged or leaking radiator Clean or repair, or replace.
i. Improper engine oil in engine coolant Replace engine coolant.
j. Air/fuel mixture ratio too leanInspect and repair fuel injection system.
On-Board Diagnostics II System
k. Excessive back pressure in exhaust system Clean or replace.
l. Insufficient clearance between piston and cylinder Adjust or replace.
m. Slipping clutch Repair or replace.
n. Dragging brake Adjust.
o. Improper transmission oil Replace.
p. Defective thermostat Replace.
q. Malfunction of electric fanInspect radiator fan relay, engine coolant temperature
sensor or radiator motor and replace there.
Over-coolinga. Atmospheric temperature extremely low Partly cover radiator front area.
b. Defective thermostat Replace.
Engine coolant
leaks.a. Loosened or damaged connecting units on
hosesRepair or replace.
b. Leakage from water pump Replace.
c. Leakage from water pipe Repair or replace.
d. Leakage around cylinder head gasket Retighten cylinder head bolts or replace gasket.
e. Damaged or cracked cylinder head and crank-
caseRepair or replace.
f. Damaged or cracked thermostat case Repair or replace.
g. Leakage from radiator Repair or replace.
Noisea. Defective drive belt Replace.
b. Defective radiator fan Replace.
c. Defective water pump bearing Replace water pump.
d. Defective water pump mechanical seal Replace water pump.
26
2-5[K100]DIAGNOSTICS
1. Engine Cooling System Trouble in General

1. Intake Manifold
A: 2200 cc CALIFORNIA SPEC. VEHICLES
B2M2276A
(1) Intake manifold gasket RH
(2) Fuel injector cap
(3) Insulator A
(4) Insulator B
(5) Fuel injector
(6) O-ring B
(7) O-ring A
(8) Fuel pipe
(9) Nipple (AT vehicles)(10) Plug
(11) PCV valve
(12) Purge control solenoid valve
(13) Nipple
(14) Intake manifold
(15) Intake manifold gasket LH
(16) Fuel pipe protector LH (LHD
model)(17) Fuel pipe protector RH (RHD
model)
Tightening torque: N´m (kg-m, ft-lb)
T1:
16±1.5 (1.6±0.15, 11.6±1.1)
T2:23±3 (2.3±0.3, 16.6±2.2)
T3:25±2 (2.5±0.2, 18.1±1.4)
T4:3.4±0.5 (0.35±0.05, 2.5±0.4)
2
2-7[C1A0]COMPONENT PARTS
1. Intake Manifold

MEMO:
3
[C1A0]2-7COMPONENT PARTS
1. Intake Manifold

B: 2200 cc EXCEPT CALIFORNIA SPEC. VEHICLES
B2M2277A
4
2-7[C1B0]COMPONENT PARTS
1. Intake Manifold

(1) Intake manifold gasket LH
(2) Intake manifold gasket RH
(3) Fuel injector pipe
(4) O-ring A
(5) O-ring B
(6) Fuel injector
(7) Insulator
(8) Fuel injector cap
(9) Nipple (AT vehicles)
(10) Plug
(11) PCV valve
(12) Purge control solenoid valve(13) Nipple
(14) Pressure sensor
(15) Pressure sources switching sole-
noid valve
(16) Vacuum hose A
(17) Vacuum hose B
(18) Vacuum hose C
(19) Bracket (Except Canada spec.
vehicles)
(20) Bracket (For Canada spec.
vehicles)
(21) Intake manifold(22) Fuel pipe protector LH (LHD
model)
(23) Fuel pipe protector RH (RHD
model)
Tightening torque: N´m (kg-m, ft-lb)
T1:
4.9±0.5 (0.5±0.05, 3.6±0.4)
T2:23±3 (2.3±0.3, 16.6±2.2)
T3:25±2 (2.5±0.2, 18.1±1.4)
T4:3.4±0.5 (0.35±0.05, 2.5±0.4)
T5:15.7±1.5 (1.6±0.15, 11.6±1.1)
5
[C1B0]2-7COMPONENT PARTS
1. Intake Manifold