1999 SUBARU LEGACY heater

4) Drain engine coolant completely.

B2M0015A
5) Disconnect connectors from radiator main fan
(A) and sub fan (B) motors.
B2M2035A
6) Loosen bolts which hold lower side of radiator
main fan and sub fan shrouds.
B2M2041
7) Disconnect radiator outlet hose (A) and heater
by-pass hose (B) from water pump.
H2M2515A
8) Lower the vehicle.
9) Remove radiator main fan [W6A0].> and sub fan assemblies [W7A0].>.
B2M2036
10) Remove V-belts.

B2M2308
11) Remove timing belt.

S2M0017
12) Remove automatic belt tension adjuster.
H2M2403
11
[W2A2]2-5SERVICE PROCEDURE
2. Water Pump

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

B2M2295AB2M1027A
(3) Disconnect the following hoses.
H2M2433C
(1) Brake booster vacuum hose
(2) Heater inlet and outlet hose
13
[W1B0]2-11SERVICE PROCEDURE
1. Engine

7) Install canister and bracket.
(1) Install power stering pump on bracket, and
tighten bolts.
Tightening torque:
39
±10 N´m (4.0±1.0 kg-m, 29±7 ft-lb)
S2M0086
(2) Install power steering pipe bracket on right
side intake manifold, and install spark plug
codes.
B2M2309
(3) Install front side V-belt, and adjust it.

G2M0286
8) Tighten nuts which hold lower side of transmis-
sion to engine.
Tightening torque:
50
±4 N´m (5.1±0.4 kg-m, 36.9±2.9 ft-lb)
B2M2790
9) Tighten nuts which install front cushion rubber
onto crossmember.
Tightening torque:
69
±15 N´m (7.0±1.5 kg-m, 51±11 ft-lb)
CAUTION:
Be sure to tighten front cushion rubber mount-
ing bolts in the innermost elliptical hole in the
front crossmember.
G2M0303
10) Install front exhaust pipe and center exhaust
pipe.
11) Connect the following hoses.
(1) Fuel delivery hose, return hose and evapo-
ration hose
(2) Heater inlet and outlet hoses
(3) Brake booster vacuum hose
12) Connect the following connectors.
(1) Engine ground terminal
(2) Engine harness connectors
(3) Front oxygen sensor connector
(4) Rear oxygen sensor connector (California
spec. vehicles)
(5) Alternator connector and terminal
(6) A/C compressor connectors (With A/C)
13) Connect the following cables.
(1) Accelerator cable
(2) Cruise control cables (With cruise control)
(3) Clutch cable (2200 cc MT vehicles)
18
2-11[W1C0]SERVICE PROCEDURE
1. Engine

9) Remove air bleeder screws from the RL and RR
caliper bodies.
10) Connect the air bleeder screws to the FL and
FR caliper bodies.
11) Connect two pressure gauges to the RL and
RR caliper bodies.
12) Bleed air from the pressure gauges and the FL
and FR caliper bodies.
13) Perform ABS sequence control.

14) When the hydraulic unit begins to work, at first
the RR side performs decompression, holding, and
compression, and then the RL side performs
decompression, holding, and compression.
15) Read values indicated on the pressure
gauges and check if they meet the standard value.
16) After checking, remove the pressure gauges
from caliper bodies.
17) Connect the air bleeder screws to RL and RR
caliper bodies.
18) Bleed air from brake line.
2. CHECKING THE HYDRAULIC UNIT ABS
OPERATION WITH BRAKE TESTER
1) In the case of AWD AT vehicles, install a spare
fuse with the FWD connector in the engine com-
partment to simulate FWD vehicles.
G4M0462
2) Prepare for operating ABS sequence control.

3) Set the front wheels or rear wheels on the brake
tester and set the select lever's position at ªneu-
tralº.
G4M0464
4) Operate the brake tester.5) Perform ABS sequence control. [W15D0].>
6) Hydraulic unit begins to work; and check the
following working sequence.
(1) The FL wheel performs decompression,
holding, and compression in sequence, and
subsequently the FR wheel repeats the cycle.
(2) The RR wheel performs decompression,
holding, and compression in sequence, and
subsequently the RL wheel repeats the cycle.
7) Read values indicated on the brake tester and
check if the fluctuation of values, when decom-
pressed and compressed, meet the standard val-
ues.
Front wheel Rear wheel
Initial value981 N
(100 kg, 221 lb)981 N
(100 kg, 221 lb)
When
decompressed490 N
(50 kg, 110 lb)
or less490 N
(50 kg, 110 lb)
or less
When
compressed981 N
(100 kg, 221 lb)
or more981 N
(100 kg, 221 lb)
or more
8) After checking, also check if any irregular brake
pedal tightness is felt.
D: ABS SEQUENCE CONTROL
1) Under the ABS sequence control, after the
hydraulic unit solenoid valve is driven, the opera-
tion of the hydraulic unit can be checked by means
of the brake tester or pressure gauge.
2) ABS sequence control can be started by diag-
nosis connector or select monitor.
1. OPERATIONAL GUIDELINES OF THE
ABS SEQUENCE CONTROL WITH
DIAGNOSIS CONNECTOR
1) Connect diagnosis terminals to terminals No. 3
and No. 6 of the diagnosis connector beside driv-
er's seat heater unit.
B4M0082D
2) Set the speed of all wheels at 4 km/h (2 MPH)
or less.
3) Turn ignition switch OFF.
57
[W15D1]4-4SERVICE PROCEDURE
15. ABS Control Module and Hydraulic Control Unit (ABSCM&H/U)

1. Specifications
A: HEATER SYSTEM
Item Specifications Condition
Heating capacity 4.652 kW (4,000 kcal/h, 15,872 BTU/h) or more ...
When 300 m
3(10,593 cu ft)/hMode selector switch HEAT
Temp. control lever FULL HOT
Temperature difference
between hot water and
inlet air65ÉC (149ÉF)
Hot water flow rate 360(95.1 US
gal, 79.2 Imp
gal)/h
Air flow rate 300 m
3(10,593 cu ft)/h Heat mode (FRESH), FULL HOT at 12.5
V
Max air flow rate 510 m
3(18,008 cu ft)/h Temperature control
leverFULL COLD
Blower fan speed 4th position
RECIRC switch position RECIRC
Heater core size (height´
length´width´thickness)193.5´152.0´25.0´0.9 mm
(7.62´5.98´0.984´0.035 in)Ð
Blower
motorType Magnet motor 230 W or less at 12 V
Fan type and
size
(diameter´
width)Sirocco fan type
150´75 mm (5.91´2.95 in)
Ð
2
4-6[S1A0]SPECIFICATIONS AND SERVICE DATA
1. Specifications

1. Heater System
B4M0368B
(1) Intake unit
(2) Grommet
(3) Hose (Inlet)
(4) Hose (Outlet)
(5) Heater duct(6) Clamp
(7) Grommet
(8) Heater unit
(9) Rear heater duct
(10) ResistorTightening torque: N´m (kg-m, ft-lb)
T:
7.35±1.96 (0.750±0.200,
5.421
±1.446)
3
[C100]4-6COMPONENT PARTS
1. Heater System

2. Heater Unit
B4M1080A
(1) Vent lever
(2) Side link
(3) DEF. lever
(4) Heater case upper
(5) Heater grommet
(6) Heater core
(7) Mix door
(8) Heater case lower(9) Mix rod
(10) Mix link
(11) Mix lever
(12) Foot duct (RH)
(13) Foot duct (CTR)
(14) Foot duct (LH)
(15) Foot lever lower
(16) Foot door(17) Vent door
(18) DEF. door
(19) Foot lever upper
Tightening torque: N´m (kg-m, ft-lb)
T:
7.35±1.96 (0.750±0.200,
5.421
±1.446)
4
4-6[C200]COMPONENT PARTS
2. Heater Unit