Subaru IMPREZA 2002 Service Manual page 508

Part name
Description
4.
Pressure plate
5. Cam ring
Wear and damage on sliding surfaces
Ridge wear on sliding surfaces
OIL PUMP
POWER ASSISTED SYSTEM (POWER STEERING)
E: INSPECTION
1. BASIC INSPECTION
Perform the following inspection procedures and repair or replace defective parts.
Remedy
1 ) Damage on body surfaces
2) Excessive wear on hole, into which spool
valve is inserted.
3) Wear and damage on cartridge assembly
mounting surface
4) Wear and damage on surfaces in contact with
Replace with a new one together with spool
valve as selective fit is made.
1. Front casing
shaft and oil seal
1) Damage on body surfaces
2) Wear and damage on sliding surfaces
2. Rear cover
Replace with a new one.
1) Shaft bend
2) Wear and damage on surfaces in contact with
bushing and oil seal
3) Wear and damage on rotor mounting surfaces
4)
Bearing damage
3. Shaft
Replace with a new one.
Replace with a new one.
6. Vane
Excessive wear on nose radius and side sur-
I
faces
If the damage is serious, replace with a new car-
tridge assembly.
1) Wear and damage on sliding surfaces
2) Ridge wear on vane sliding grooves (If light
leaks with vane in slit aaainst liaht source)
7. Rotor
I
3) Damage resulting from snap ring removal
Correct with oil stone. If the damage is serious,
replace with a new cartridge assembly.
Replace with a new one.
Replace with a new one.
8. Connector
I
Damage on threads
9. Spring Damage
10. Bolts and nuts
In accordance with the following table, check all removed parts for wear and damage, and make repair or
Damage on threads
Relslace with a new one.
replacement if necessary.
Parts
Corrective action
Inspection
(1) Crack. damaae or oil leakaae
No.
1
2
3
4
5
Replace the oil pump with a new one.
Measure the radial play and axial play.
If any of these exceeds the service limit, replace the
oil pump with a new one.
Oil pump (Exterior)
(2) Play of pulley shaft
Replace it with a new one.
(1 ) Damage
Measure the V ditch deflection.
If it exceeds the service limit, replace the pulley with a
new one.
Check the resistance
to
the rotation of pulley.
If it is past the service limit, replace the oil pump with a
new one.
Oil pump emits a noise that is markedly different in
tone and loudness from a sound of a new oil pump
when turning with a string put around its pulley,
replace the oil pump with a new one.
Pulley
(2) Bend
(1) Defect or burning of vane pump
Oil pump (Interior)
(2)
Bend in the shaft or damage to
bearing
Crack or deterioration
Replace it with a new one.
Replace it with a new one.
0-rina
Bracket Crack
PS-66