Cooling System - Subaru Forester SG 2004 Manual

PERIODIC MAINTENANCE SERVICES

11.Cooling System

A: INSPECTION
1) Check the radiator for leakage, filling it with cool-
ant and attach the radiator cap tester (A) to filler
neck.
PRESSURE:
157 kPa (1.6 kg/cm
Check the following points.
• Each portion of radiator for leakage
• Hose joints and other connections for leakage
CAUTION:
• For turbo model, be sure to install tester to
filler tank side.
• When attaching or detaching tester and when
operating tester, use special care not to deform
radiator filler neck.
• When performing this check, be sure to keep
the engine stationary and fill the radiator with
coolant.
• Wipe off check points before applying pres-
sure.
• Use care not to spill coolant when detaching
the tester from radiator.
• Non-turbo model
• Turbo model
(A)
2) Check the radiator cap valve open pressure us-
ing radiator cap tester.
Raise the pressure until the needle of gauge stops
and see if the pressure can be retained for 5 to 6
seconds. The radiator cap is normal if a pressure
above the service limit value has been maintained
for this period.
COOLING SYSTEM
2
, 23 psi)
(A)
CO-00042
CO-00043
CAUTION:
Rust or dirt on the cap may prevent the valve
from functioning normally: be sure to clean the
cap before testing.
Radiator cap valve open pressure
Standard value:
93 — 123 kPa (0.95 — 1.25 kg/cm
psi)
Service limit:
83 kPa (0.85 kg/cm
(A)
(A) Deformation
(B) Deformation, damage, rust
3) Start the engine, and then check if it does not
over heat or it is cooled excessively. If it overheats
or it is cooled excessively, check the cooling sys-
tem. <Ref. to CO(H4SO)-19, Water Pump.> <Ref.
to CO(H4SO)-24,
CO(H4SO)-26, Radiator.> <Ref. to CO(H4SO)-32,
Radiator Cap.>
4) Check the radiator fan operates using SUBARU
Select Monitor, when the coolant temperature ex-
ceeds 95°C (203°F). If not operate, check the radi-
ator fan system. <Ref. to CO(H4SO)-11, Radiator
Fan System.>
PM-18
2
, 14 — 18
2
, 12 psi)
PM-00023
(A)
(B)
PM-00089
Thermostat.> <Ref. to