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  • Users: Bob1uk
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  1. Bob1uk

    Gear Pump Volume Formula

    Could some kind soul point me in the correct direction please. I need to find the capacity of an automotive transmission gear pump, the engine driver gear measures 2.364" driven gear=1.694" gear width=.472" and dimension between centres =1.574" The formula I have is for gears of equal OD Thank...
  2. Bob1uk

    PWM Solenoid frequency

    Hello I am engaged in repairing automotive automatic transmission, I have noticed that PWM solenoids are driven at many different Htz, although their external appearance is much the same. to date I cant find a reasonable answer for the difference & why, Closest I come to an answer is that there...
  3. Bob1uk

    Metal contraction in freezer

    I have two questions if I may 1-If an aluminum housing with a steel spool valve is placed in a freezer is it likely to be covered in frost on removal after several hours ? 2- Depending on the answer to (1) would this be a valid test for hanging spool valve when ambient temperature is cold...
  4. Bob1uk

    Sensor return Voltage drop testing ?

    Could some knowelegable person please indicate the correct procedure for checking possible voltage drop on the majority of sensor returns ?

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