Buick 19244683 Pump Asm,Windshield Washer *Use Together With Mati

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Pre-1975 models,Remove the wiper motor. Remove the washer pump mounting screws and lift off the pump from the wiper motor. Pull off the four lobe washer pump drive cam. This is a press fit and may require prying. Remove the felt washer from the wiper shaft. Remove the ratchet dog retaining screw, then hold the spring loaded solenoid plunger in position and lift the solenoid assembly and ratchet dog off the pump frame. Separate the dog from the mounting plate if necessary. To remove the ratchet wheel, move the spring out of the shaft groove and slide the ratchet wheel off its shaft. To separate the pump and pump actuator plate from the frame, pull the pump housing towards the valve end until the grooves in the housing clear the frame. Reassembly is the reverse of the dismantling procedure. Installation is the reverse of the removal procedure.1975 and later models: Remove the two screws attaching the pump body to the washer reservoir. Disconnect the electrical leads and the hoses. Note the installed position of the motor and pump assembly on the reservoir then remove the nut and screen assembly using a suitable wrench and socket. Note: The motor and pump assembly are serviced as a complete assembly, including the gasket, retaining nut and screen. Installation is the reverse of the removal procedure.

Pre-1975 models feature an electrically driven washer pump system consisting of a washer fluid reservoir, washer pump, actuating cam, and interconnecting tubes. When the washer control button is pressed, the pump solenoid circuit is completed, activating the wiper switch and motor through the solenoid's mechanical movement. The rotation of the wiper motor operates the washer pump as long as the button is held down. In 1975 and later models, a permanent magnet motor and pump assembly are mounted on the base of the washer fluid reservoir. Pressing the washer control button grounds the washer motor circuit, causing the motor to activate and the pump and wipers to operate. The washers only function while the button is depressed, while the wipers will continue to operate until the dash-mounted switch is turned off.