Subaru LEGACY 2006 Manual page 4011

asieps_tobira.book 43 ページ ２００９年１０月２６日 月曜日 午前９時１６分
15) Finally, check the clearance between pipes or
hoses as shown in the figure indicated in "General
Diagnostic Table". <Ref. to PS-59, INSPECTION
OF CLEARANCE, INSPECTION, General Diag-
nostic Table.>
C: INSPECTION
Check all disassembled parts for wear, damage or other problems. Repair or replace the defective parts as
necessary.
Part
Pipe
Clamp
Hose
CAUTION:
Although the surface layer materials of rubber hoses have excellent weathering resistance, heat re-
sistance and resistance for low temperature brittleness, they are likely to be damaged chemically by
brake fluid, battery electrolyte, engine oil and automatic transmission fluid and their service lives are
to be very shortened. Wipe off hoses immediately if any of these come into contact with the hoses.
Since resistances for heat or low temperature brittleness are gradually declining according to time
accumulation of hot or cold conditions for the hoses and their service lives are shortening accord-
ingly, it is necessary to perform careful inspection frequently when the vehicle is used in hot weather
areas, cold weather areas and a driving condition in which many steering operations are required in
short time.
Continuous discharge of the relief valve for over 5 seconds will reduce the service lives of hoses, oil
pump, fluid, etc., due to over heating.
Trouble
Pressure hose burst
Disconnection of the return
hose
Fluid slightly leaking out of
hose
Crack on hose
Pipe Assembly
Maintenance parts
• O-ring fitting surface damage
• Nut damage
• Pipe damage
• Loose clamps
• Flare surface damage
• Flare nut damage
• Outer surface cracks
• Outer surface wear
• Clip damage
• End coupling or adapter deformation
Possible cause
Excessive holding time of relief status
Malfunction of the relief valve
Poor cold characteristic of fluid
Improper connection
Loosening of the clip
Poor cold characteristic of fluid
Wrong layout, tensioned
Excessive play of engine due to deterioration of
engine mounting rubber
Improper stop position of pitching stopper
Excessive holding time of relief status
Excessive tightening torque for return hose clip
Power steering fluid, engine oil, electrolyte adhere
on the hose surface
Too many uses in extremely cold weather
PS-43
POWER ASSISTED SYSTEM (POWER STEERING)
Corrective action
Replace with a new part.
Replace with a new part.
Replace with a new part.
Corrective action
Instruct customers.
Replace the oil pump.
Replace fluid.
Repair.
Retighten.
Replace fluid.
Replace the hose.
Replace the parts if defective.
Replace the parts if defective.
Replace.
Instruct customers.
Replace.
Replace.
Be careful during service work.
Replace.
Instruct customers.