Hydraulic System Inspection

Before starting, check belt tension, driving pulley and tire pressure.
1. Install oil pressure gauge tool Nos. J26357 and J26357-10, or equivalents, open shut-off valve and bleed air.
2. Run engine.

NOTE:
^ Make sure temperature of fluid in tank rises to 60 - 80° C (140 - 176° F).
^ Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed, fluid pressure in oil pump will increase to maximum. This will raise oil temperature abnormally.

3. Check pressure with steering wheel fully turned to left and right positions with engine idling at 1,000 RPM. Oil pump maximum standard pressure is 7,649 - 8,238 kPa (1,109 - 1,194 psi).

CAUTION: Do not hold the steering wheel in a locked position for more than 15 seconds.

4. If oil pressure is below the standard pressure, slowly close shut-off valve and check pressure.
^ When pressure reaches standard pressure, gear is damaged.
^ When pressure remains below standard pressure, pump is damaged.

CAUTION: Do not close shut-off valve for more than 15 seconds.

5. If oil pressure is higher than standard pressure, check oil pump flow control valve.
6. After checking hydraulic system, remove oil pressure gauge tool and add fluid as necessary. Then completely bleed air out of system.