Hard to Find Automotive Specialty Tools

 

1.  Engine idling valve open note flow & pressure above 150 PSI/1034 KPA check for flow restrictions

2.  Engine idling partially close valve to build 700 PSI/4827 KPA

·         Flow drops more than 1 GPM/3.8LPM repair ring rotor & vanes

·         Flow below spec & not affected by pressure increase replace union fitting (pump)

3.  Engine idling close and open valve 3 times and note pressure each time valve is closed

·         Pressure varies more than 50 PSI/345 KPA clean flow control valve

·         Pressure 100 PSI/690 KPA less than spec replace flow control valve

4.  Vary engine speed from idle to approx 1,500 RPM & note flow

·         Flow varies more than 1 GPM/8 LPM from step 1 clean flow control valve

5.  Engine idling turn wheels against stops each way & note flow

·         Flow more than 1 GPM/3.8 LPM remove gear disassemble & repair

6.  Engine idling turn steering wheel slightly in both directions & release quickly

·         Pressure increases 200-400 PSI/1379-2758 KPA but does not snap back remove disassemble & clean rotary valve (Gear)

7.  If checks made in steps 1 thru 6 are ok but problems still exists shot off engine and

·         Remove pitman arm from gear and proceed to next step

8.  Engine idling turn steering wheel in both directions (Not against stops) & note pressure

·         Pressure below 150 PSI/1034 KPA check suspension for binding