Power Steering Pump Test
- Install hose clamps, Snap-On(c) Model YA2850 or equivalent, on suction and pressure hoses. Press spring clamp and disconnect harness connector from fuel injector. Tightly hold hex fitting on flexible pressure hose, and disconnect threaded connection.
- Install adapter US 1074/4C in the line in place of pressure hose. Install hose pressure gauge US 1074 on adapter US 1074/4C. See Fig 1 . Close locking valve of gauge. Install connector on fuel injector. Remove hose clamps from suction and pressure hoses.
- Start engine. At idle, read pump pressure on gauge. Pressure should be 1740-1885 psi (120-130 bar). Stop engine. If pump pressure is not within specification, replace pump. See POWER STEERING PUMP under REMOVAL & INSTALLATION.
- Install hose clamp on suction and pressure hose. Disconnect harness connector from fuel injector. Remove pressure gauge hose from adapter and put gauge aside. Take adapter off pressure line. Connect pressure hose to line by holding pressure hose hex. Install connector for fuel injector. Remove hose clamps from pressure and suction hoses. Let engine idle for approximately 2 minutes with front wheels pointed straight ahead.
- Stop engine and immediately check power steering fluid level, noting marks on reservoir or dipstick. If necessary, top of to MAX mark. Check steering system for leaks.
NOTE:
Measurement must last no longer than 10 seconds while engine is on.