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Wiper knobs?
Not too shy to talk
Not too shy to talk

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Not sure what to call these or what exactly they do. I don't see a washer reservoir or anything that would activate a pump.

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Posted on: 9/28 20:08
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Re: Wiper knobs?
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Those are the washer jets and usually not present unless the option was installed. Perhaps it was removed at some point. Installation instructions for the washer start on page 6 of the accessories section of 51-54 service manual. That will give you an idea of the layout.

You may be able to find a washer pump and jar on ebay as the same unit was used by many other mfgs. Some come with the bracket but you may need to find that separately. Search for Trico or Windshield washer. 48-50 pumps are quite different in looks so not applicable. 51-3 used essentially the same unit so search for those years. 54 went to electric activation with coordinated wiper motor operation so operates and looks different. 6v units may be harder to find and it also needs a different wiper on/off switch.

In 53 the washer jar and pump would be mounted on the left inner fender. 48-53 washers are operated by turning the regular wiper on/off knob backwards a small amount and hold it against a spring for a few seconds. That action opens a hose port on the drivers side of the motor to vacuum. A hose connects the port to the pump and vacuum pulls a large piston in the pump mechanism upwards against a spring. A small piston on the other end pulls water into another chamber of the pump at the same time.

Letting go of the knob cuts off the vacuum and opens the port to air letting the pump spring drive the piston down. Continued turning of the wiper knob in the normal direction starts the wiper motor and wiper blades clean windshield as the water discharges thru the jets. When water stops flowing let the blades move two or three more times then turn the motor off.

Posted on: 9/28 20:30
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Re: Wiper knobs?
Home away from home
Home away from home

Packard Don
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I have plenty jars and a few brackets but only one top cover with pump which is NOS although it the basic type. If you can’t find anything sooner, let me know and I’ll see what I have when I’m next at my shop. I believe that the jars and maybe the brackets are listed in the Classified Ads on my Packard / IMPERIAL page linked below.

Posted on: 9/29 14:36
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