Subaru Impreza 2003 Service Manual page 2708

POWER ASSISTED SYSTEM (POWER STEERING)
2. SERVICE LIMIT
Make a measurement as follows. If it exceeds the
specified service limit, replace the parts with new
ones.
CAUTION:
• Fix the oil pump on a vise to make a measure-
ment. At this time, hold the oil pump with least
possible force between two wood pieces.
• Do not set outside of flow control valve or
pulley on a vise; otherwise outside or pulley
might be deformed. Select properly sized wood
pieces.
1) Play of the pulley shaft
Condition:
P: When applying the force of 9.8 N (1.0 kgf,
2.2 lb)
Service limit:
Radial play (Direction
0.4 mm (0.016 in) or less
P
(1) Dial indicator
Axial play (Direction
0.9 mm (0.035 in) or less
(1)
P
(1) Dial indicator
OIL PUMP
)
(1)
PS-00145
)
PS-00146
PS-84
2) Ditch deflection of pulley
Service limit:
1.0 mm (0.039 in) or less
NOTE:
Read the value for one surface of V ditch, and then
the value for another off the dial.
(1) Dial indicator
3) Resistance to rotation of pulley
Service limit:
Maximum load; 9.22 N (0.94 kgf, 2.07 lb) or
less
NOTE:
• A rather higher value may be indicated when pul-
ley starts turning.
• Measure the load during rotation and make a
judgment.
(1) Spring balance
PS-00147
PS-00148