bench testing trico wiper motor ?

[Rick Peterson #25685]

Does anyone know how to bench test a wiper motor. Maybe tie into shop vac ?

Thanks in advance.

Rick

[Nasser Almasary]

Rick
  I always test the motor by pluging the vacuum inlet with my finger and move the lever manually and see how much suction it creates. You could take it to any car and hook it up with any vacuum hose and check its seal and smothness of movement, it is a question of how good the leather seal can hold air. By moving the lever (playing with it) you can hear the sound (a woosh) and can make an educated guess of its tightness. you could improve the seal by using heavy grease in the motor. My 2Cs.
Nasser,

[Jose Gomez]

Does anyone know how to bench test a wiper motor. Maybe tie into shop vac ?

Thanks in advance.

Rick

Rick,

Any vacuum source that provides 13” of vacuum should suffice i.e. an A/C vacuum pump.

Good luck..!

[Roger H]

you could run a hose from a newer car intake manifold for testing

[Carl Schreiber]

Rick / all -

You might want to try a mity-vac brake bleeder - minus the bleed cup.  It should generate enough vacuum to test the wiper motor, plus, once you get it to the vacuum level you want, you can watch to see if the gauge bleeds down - even time it  -
to see if the wiper motor is holding vacuum.  If you don't have one, they're not that expensive, and pretty useful to test all
kinds of vacuum parts (in addition to bleeding brakes!).  Most auto parts stores rent them for cheap or free, too.

Carl Schreiber