Re: '55 Wipper switch removal, clean & lube
Posted by HH56 On 2016/9/28 19:32:43
The switch itself does not really come apart for service. The cable and rack is part of the casting but the speed sweep valve might benefit with a dab of oil or grease. I don't know if there is anything to service in the end where the washer electrical contact is located. When the knob is pushed I believe all that happens is the shaft makes contact with the terminal to ground the washer solenoid.
To take the assy out start by removing the knob by placing a small screwdriver blade in the notch at the base. Push the blade in against the spring retainer as you pull the knob off the shaft. The speed sweep lever is next and it just pulls out. There is a spring partially in the lever and a small washer so be sure not to lose either as you pull the sweep lever off. After the lever is off you will see a nut. Remove the nut and bezel and the switch will pull out of the dash from the back.
There are two hoses on the switch so when you remove them take note of which port each is attached to. If they are wrong there will be a constant hissing noise if the lever is in a certain position. If you have that issue just reverse the hoses at the switch or in the engine compt.
Also when you remove the cable from the motor, if there is a washer coordinator take note of the cable wire end and the washer arrangement. The washer has to be able to pull the pot metal slide attached to coordinator back when you turn the wiper off. The coordinator body is on two slide arrangements and its cable also has a washer. The pot metal end slide in the motor casting and the bracket the coordinator body slides in could use some lube. If you remove the coordinator assy, its cable has to be pulled out against a heavy spring inside the coordinator while you put the washer back in the correct position in the plastic motor valve slide.
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To take the assy out start by removing the knob by placing a small screwdriver blade in the notch at the base. Push the blade in against the spring retainer as you pull the knob off the shaft. The speed sweep lever is next and it just pulls out. There is a spring partially in the lever and a small washer so be sure not to lose either as you pull the sweep lever off. After the lever is off you will see a nut. Remove the nut and bezel and the switch will pull out of the dash from the back.
There are two hoses on the switch so when you remove them take note of which port each is attached to. If they are wrong there will be a constant hissing noise if the lever is in a certain position. If you have that issue just reverse the hoses at the switch or in the engine compt.
Also when you remove the cable from the motor, if there is a washer coordinator take note of the cable wire end and the washer arrangement. The washer has to be able to pull the pot metal slide attached to coordinator back when you turn the wiper off. The coordinator body is on two slide arrangements and its cable also has a washer. The pot metal end slide in the motor casting and the bracket the coordinator body slides in could use some lube. If you remove the coordinator assy, its cable has to be pulled out against a heavy spring inside the coordinator while you put the washer back in the correct position in the plastic motor valve slide.
Attach file:
(32.17 KB)
(50.30 KB)
(51.09 KB)
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