Subaru IMPREZA GD 2007 Series Manual page 3469

asieps_tobira_IM_US.book 63 ページ ２０１２年１月１７日 火曜日 午後３時４８分
3. HYDRAULIC PRESSURE
NOTE:
• Be sure to complete all items aforementioned in
"INSPECTION," prior to measuring hydraulic pres-
sure. Otherwise, pressure can not be measured
correctly. <Ref. to PS-67, INSPECTION, General
Diagnostic Table.>
• Do not leave the valve of pressure gauge closed
or hold the steering wheel at lock for 5 seconds or
more in any case, this can damage the oil pump.
• Before attaching a pressure gauge, place cloth
at locations where fluid is expected to spill. Wipe off
any spilt fluid completely after the measurement.
1) Regular pressure measurement
(1) Connect the ST1, ST2 and ST3.
ST1 925711000 PRESSURE GAUGE
ST2 34099AC020 ADAPTER HOSE B
ST3 34099AC010 ADAPTER HOSE A
(2) Remove the air intake duct.
(3) Disconnect the pipe C from pump.
(4) Using the gasket (Part No. 34621AC022)
and bolt (Part No. 34620AC010), attach the
ST2 to pump instead of pipe C.
(1)
(1) Bolt A
(2) Pipe C
(3) Pipe D
(5) Attach the ST3 to the end of pipe C which is
removed from pump.
(6) Replenish power steering fluid up to the
specified level.
(7) Open the valve, and start the engine.
Oil Pump
(2)
(3)
PS-00432
PS-63
POWER ASSISTED SYSTEM (POWER STEERING)
(8) Measure the regular pressure.
ST1 925711000 PRESSURE GAUGE
ST2 34099AC020 ADAPTER HOSE B
ST3 34099AC010 ADAPTER HOSE A
(1) Valve
Service limit:
2
981 kPa (10 kgf/cm , 142 psi) or less
(9) If it is not within the specification, replace the
problem part for the following problems. (Pipe
or hose clogged, leaks from fluid line, and mix-
ture of foreign matter in fluid line)
2) Measure the relief pressure.
(1) Using the STs, measure the relief pressure.
(2) Close the valve.
(3) Measure the relief pressure.
ST1 925711000 PRESSURE GAUGE
ST2 34099AC020 ADAPTER HOSE B
ST3 34099AC010 ADAPTER HOSE A
(1) Valve
Service limit:
Non-turbo model:
6,700 — 7,400 kPa
2
(68 — 75 kgf/cm , 972 — 1,073 psi)
Turbo model and STI model:
7,350 — 8,036 kPa
2
(75 — 82 kgf/cm , 1,067 — 1,165 psi)
(4) If it is not within the specification, replace the
oil pump.
PS-00152
PS-00153