Windshield washer ?

I havent checked locally yet , but are the washer mechanisms available for the 1st gens? , any part numbers to toss around? for some reason mine wont disengage, I had it apart today but Im flying blind here and dont know what to look for in the wear department, I disconnected the plug for the solenoid and that didnt change anything, things seem to be free moving when its apart. I dont have a service manual for this stuff so even a pic of the wiper/washer system may help. Anything I should just check? Thanks,
Digz

These things are such a Rube Goldberg contraption I have a hard time following how they work. That accuator rides against a star drive that sticks back from the wiper motor. That might have some wear on it but again I dont know what good one looks like. the accuator slides back and forth and cocks the plunger ( loads the spring). The solenoid pulls the pawl in to keep it from unloading. That cogged/stepped wheel goes around until it lifts a contact apart and also allows the spring to unload, the contact breaking should stop the solenoid from keeping the pawl engaged until you hit the button again. I get the idea the accuator moves with the star drive all the time the wipers are on? I'm missing something somewhere,,,,LOL , I'll have to bench test the circuits tomorrow I guess . And Thanks Don !

I found the problem. But Im going to go through this just for reference material . First, the washer drive on the wiper motor, metal, and is on whenever the wiper motor is running.

Overall view of the washer assembly.

This is the accuator ( or whats left of it) a.k.a. the problem.
When the circuit is completed, the solenoid holds the pawl in and drags the ratchet around as the accuator is being moved back and forth by the motor drive which grabs a bite and releases for another.



There basically 2 grounding circuits, 1 the chasis ground ,which keeps the solenoid activated until the the ratchet comes around far enough to break the circuit. 2 The button on the wiper switch which overrides the broken chasis ground to begin the cycle. The ratchet also has a cam that pulls back the plunger as things turn. Kind of like winding up a catapult it loads the plunger spring until it opens up on the cam. The washer mechanism is then at rest again as the main ground is broken.
Circuit closed.

Circuit open.

This shows the cam on the bottom side of the ratchet, the tab on the plunger the cam rides against and a good overall of how it works together.

The problem is the accuator that rides against the star drive off the wiper motor, a good portion of it is worn away only allowing a partial stroke. enough to operate the pump without actually being able to bring the ratchet around to a rest position. Keeping the solenoid grounded and the ratchet not moving once it hits a certain spot.
Unfortunately my other 2 vans are lacking in the windshield washer department to rob for parts. So I need to find out whats available. Maybe useless information but it was fun figuring this mousetrap out !

Well Don ,, if ya run into any at the pick apart out there where they might not have been used so much keep me in mind,,LOL,, a 1/4" nutdriver and 2 minutes .........

Joe, I might have one, Let me look. It Might even be from Cail

Original !! I have had limited life spans on the little in-line motor pumps in the past and I dont really see a handy place to mount another from something else,,, I got it pretty crowded already ! If I could even just get ahold of one with a good accuator and something else wrong I could fix this one.
Thanks Tom ,, let me know what ya find. I did a quicky search with Google for a pump and came up with nada, switches galore and rebulid kits for the pump itself but zip on the mechanicals. I would think there would be some crossover to trucks or cars on this item, but maybe not.

I just found them listed in Rockauto, the pic is a littel different but I swiped the part# and will see what my local napa guy can do. it crosses to the malibus and chevelles,,we'll see. If ya got one tho Tom I'll go that way, we can do some trading.

Joe I found 2 so far. Didn't test them so,send me your address, And I'll get them going your way. Pick up spare at Bakers.

Sent ya a pm Tom.

Well the unit listed everywhere (Anco 6102) definately doesnt fit a 1st gen 2 speed wiper set up. looks similar in the catalogues but bigger overall in a couple ways and the drive system is a little different but I think works the same way. maybe it fits a single speed ??

Joe there on the way

Thanks Tom !!

Savage fixed me up with 2 to work with ,, at first blush they look good the mechanicals are in real good shape. test the coils tomorrow.

One had a super stiff diaphram and wouldnt move right. NP I tore it apart and took my worn out one and the good mechanical used one and put them together.

so 2 out of 3 aint bad.

There are a couple things to watch for taking these apart but its pretty straight forward. the real sneaky one is the large diaphram to the plunger, it uses a cross lock set up like the springs on brake shoes.

and you have to depress the spring to slide the plunger off the base.

So if you can find a kit for the rubber parts it is repairable, that might be a big IF