Subaru Legacy III (2000-2003 year). Manual - part 77

CO(H4SO)-16

COOLING

WATER PUMP

5. Water Pump

A: REMOVAL

1) Disconnect ground cable from battery.

2) Lift-up the vehicle.
3) Remove under cover.

4) Drain engine coolant completely.
<Ref. to CO(H4SO)-14, DRAINING OF ENGINE
COOLANT, REPLACEMENT, Engine Coolant.>
5) Disconnect connectors from radiator main fan
(A) and sub fan (B) motors.

6) Disconnect radiator outlet hose and heater by-
pass hose from water pump.

7) Lower the vehicle.
8) Remove air intake duct.

9) Disconnect overflow hose.

10) Remove reservoir tank.

11) Remove radiator main fan and sub fan assem-
blies. <Ref. to CO(H4SO)-28, REMOVAL, Radiator
Main Fan and Fan Motor.>  and <Ref. to
CO(H4SO)-30, REMOVAL, Radiator Sub Fan and
Fan Motor.>

FU-00009

LU-00095

( A )

( B )

CO-00084

CO-00085

IN-00059

CO-00086

CO-00087

CO(H4SO)-17

COOLING

WATER PUMP

12) Remove V-belts.
<Ref. to ME(H4SO)-41, REMOVAL, V-belt.>
13) Remove timing belt.
<Ref. to ME(H4SO)-46, REMOVAL, Timing Belt
Assembly.>
14) Remove automatic belt tension adjuster.

15) Remove belt idler No. 2.

16) Remove left-hand camshaft sprocket by using
ST.
ST

18231AA010

CAMSHAFT SPROCKET 
WRENCH

NOTE:
Camshaft sprocket wrench (499207100) is also
available.

17) Remove left-hand belt cover No. 2.

18) Remove tensioner bracket.

19) Remove water pump.

CO-00016

CO-00017

CO-00018

ST

CO-00019

CO-00020

CO-00021

CO(H4SO)-18

COOLING

WATER PUMP

B: INSTALLATION

1) Install water pump onto left-hand cylinder block.

NOTE:
• Replace gasket with a new one.
• When installing water pump, tighten bolts in two
stages in alphabetical sequence as shown in fig-
ure.

Tightening torque:

First:

12 N·m (1.2 kgf-m, 8.7 ft-lb)

Second:

12 N·m (1.2 kgf-m, 8.7 ft-lb)

2) Install tensioner bracket.

Tightening torque:

25 N·m (2.5 kgf-m, 18.1 ft-lb)

3) Install left-hand belt cover No. 2.

Tightening torque:

5 N·m (0.5 kgf-m, 3.6 ft-lb)

4) Install left-hand camshaft sprockets by using ST.
ST

18231AA010

CAMSHAFT SPROCKET 
WRENCH

NOTE:
Camshaft sprocket wrench (499207100) is also
available.

Tightening torque:

78 N·m (8.0 kgf-m, 57.9 ft-lb)

5) Install belt idler No. 2.

Tightening torque:

39 N·m (4.0 kgf-m, 28.9 ft-lb)

6) Install automatic belt tension adjuster which ten-
sion rod is held with pin.  <Ref. to ME(H4SO)-47,
AUTOMATIC BELT TENSION ADJUSTER AS-
SEMBLY AND BELT IDLER, INSTALLATION,
Timing Belt Assembly.>
7) Install timing belt.  <Ref. to ME(H4SO)-48, TIM-
ING BELT, INSTALLATION, Timing Belt Assem-
bly.>
8) Install V-belts.  <Ref. to ME(H4SO)-42, INSTAL-
LATION, V-belt.>
9) Install radiator main fan and sub fan motor as-
semblies. <Ref. to CO(H4SO)-29, INSTALLATION,
Radiator Main Fan and Fan Motor.>  and <Ref. to
CO(H4SO)-30, INSTALLATION, Radiator Sub Fan
and Fan Motor.>

CO-00026

( A )

( B )

( C )

( D )

( E )

( F )

CO-00020

CO-00019

CO-00018

ST

CO-00017

CO(H4SO)-19

COOLING

WATER PUMP

10) Install reservoir tank.

11) Connect overflow hose.

12) Install air intake duct.

13) Lift-up the vehicle.
14) Connect radiator outlet hose and heater by-
pass hose to water pump.

15) Connect connectors to radiator main fan (A)
and sub fan (B) motors.

16) Install under cover.

17) Lower the vehicle.
18) Connect battery ground cable.

19) Fill coolant. <Ref. to CO(H4SO)-14, FILLING
OF ENGINE COOLANT, REPLACEMENT, Engine
Coolant.>

CO-00087

CO-00086

IN-00059

CO-00085

( A )

( B )

CO-00084

LU-00095

FU-00009