Subaru 2004 LEGACY, Service Manual

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PS-70
POWER ASSISTED SYSTEM (POWER STEERING)
Pipe Assembly [LHD Model]
NOTE:
It is likely that although one judges fluid leakage, there is actually no leakage. This is because the fluid spilt
during the last maintenance was not completely wiped off. Be sure to wipe off spilt fluid thoroughly after main-
tenance.
(A) 3.0 L model (B) Except for 3.0 L model
Fluid leaking area Possible cause Corrective action
Leakage from connecting portions of
pipes and hoses, numbered with (1)
through (8) in figure
Insufficient tightening of flare nut, adhesion of
dirt, damage to flare or flare nut or eye bolt Loosen and retighten. Replace if ineffec-
tive.
Poor insertion of hose or clamping Retighten or replace the clamp.
Damaged O-ring or gasket
Replace O-ring or gasket pipe or hose
with new one, if ineffective, replace the
gearbox also.
Leakage from hose (9) through (13) in
figure
Crack or damage in hose Replace with a new one.
Crack or damage in hose hardware Replace with a new one.
Leakage from surrounding of cast iron
portion of oil pump (14) and (15) in
figure Damaged O-ring Replace the oil pump.
Damaged gasket Replace the oil pump.
Leakage from oil tank (16) and (17) in
figure
Crack in oil tank Replace the oil tank.
Leakage from filler neck (18)
Damaged cap packing Replace the cap.
Crack in root of filler neck Replace the oil tank.
High fluid level Adjust the fluid level.
Leakage from surrounding of power
cylinder of gearbox (19) in figure
Damaged oil seal Replace the oil seal.
Leakage from control valve of gear-
box (20) and (21) in figure
Damaged packing or oil seal Replace the problem parts.
Damage in control valve Replace the control valve.
(22) Leakage from connecting por-
tion of cooler pipe and hose.
Insufficient tightening of connecting portion. Loosen and retighten.
PS-00541
(10)
(17)
(1)
(13)
(19)
(4)
(2)
(9)
(8)
(7)
(12)
(15)
(14)
(11)
(16)
(18)
(5)
(6)
(20)
(3)
(21)
(22)
(A) (B)