Checking Hydraulic System
Before starting, check belt tension, driving pulley and tire pres-
sure.
1. Set Tool. Open shut-off valve. Then bleed air. (See ªBleed-
ing Hydraulic Systemº.)
2. Run engine.
Make sure temperature of fluid in tank rises to 60 to 80ÉC
(140 to 176ÉF).
WARNING:
Warm up engine with shut-off valve fully opened. If engine
is started with shut-off valve closed, oil pressure in oil pump
will increase to relief pressure, resulting in an abnormal rise
in oil temperature.
3. Check pressure with steering wheel fully turned to left and
right positions with engine idling at 1,000 rpm.
CAUTION:
Do not hold the steering wheel in a locked position for more
than 15 seconds.
Oil pump maximum standard pressure:
QG: 7,502 - 8,101 kpa
(75 - 81 bar, 76.5 - 82.6 kg/cm
2,
1,088 - 1,175 psi)
SR: 7,002 - 7,600 kPa
(70 - 76 bar, 71.4 - 77.5 kg/cm
2,
1,015 - 1,102 psi)
CD: 7,690 - 8,493 kpa
(77 - 85 bar, 78,5 - 86,6 kg/cm
2,
1,116 - 1,231 psi)
4. If oil pressure is below the standard pressure, slowly close
shut-off valve and check pressure.
lWhen pressure reaches above standard pressure, gear is
damaged.
lWhen pressure remains below standard pressure, pump is
damaged.
CAUTION:
Do not close shut-off valve for more than 15 seconds.
5. After checking hydraulic system, remove Tool and add fluid
as necessary, then completely bleed air out of system.
SST834 ST27091000
Pump
TankGearHigh-
pressure
hose
Direction of oil flowLow-pressure
hose
ON-VEHICLE INSPECTION
ST-8
