GMC 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 have an electric Washer Pump system with a reservoir, pump, cam, and tubes, and pressing the washer button activates the wiper motor, which runs the Washer Pump. In 1975 and later models, a motor and pump are on the reservoir base. Pushing the washer button activates the motor, running the pump and wipers. The washers work when pressed; wipers run until switched off on the dashboard.