Armada 4WD V8-5.6L (VK56DE) Flex Fuel (2009)
Power Steering Pump: Procedures
POWER STEERING OIL PUMP
On-Vehicle Inspection and Service
CHECKING RELIEF OIL PRESSURE
CAUTION:
Before starting work, confirm belt tension is correct. Refer to See: Engine, Cooling and Exhaust/Engine/Drive Belts, Mounts, Brackets and
Accessories/Drive Belt/Testing and Inspection.
1. Connect Tool between oil pump discharge connector and high pressure hose and then bleed air from the hydraulic circuit.
2. Start engine. Allow engine to run until tank temperature reaches 50 - 80°C (122 - 176°F).
CAUTION:
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Warm up engine with shut-off valve fully opened. If engine is started with shut-off valve closed, fluid pressure in power steering pump
increases to maximum. This will raise fluid temperature excessively.
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Be careful not to contact hose with belt when engine is started.
3. With engine at idle, close shut-off valve and read the relief oil pressure.
Relief oil pressure : 9.0 - 9.8 mPa (91.77 - 99.93 kg/cm2, 1305.34 1421.37 psi)
CAUTION:
Do not close shut-off valve of pressure gauge for more than 10 seconds.
4. After measurement, open shut-off valve slowly.
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If relief oil pressure is outside the specification, disassemble and repair oil pump. Refer to See: Removal and Replacement/Disassembly and
Assembly .
5. After inspection, disconnect oil pressure gauge and oil pressure gauge adapter from hydraulic circuit, connect oil pump discharge connector and
high pressure hose. Add fluid and bleed air from hydraulic circuit thoroughly. Refer to See: Power Steering Bleeding/Service and Repair.