trying to figure out my 2 speed wiper problems. I took it apart, cleaned the contacts, ran all the FSM bench tests afterward, does whats its supposed to but it still doesn't part. It goes in reverse by jumpering the contacts as the FSM says but doesn't stop - what controls the stop mechanism?

I know the cam assembly on the arm end creates the extra reverse pull for parking but it cant stop the motor from running in reverse so what does, is it in the switch?

Im also wondering about the direction of the switch settings in the dash - after bench rebuild & test I plugged it back into the car and the switch when in its horizontal position its in hi spd, 2nd step up to the right its in lo then 3rd its in reverse - this seems like the reverse of what should be, is it upside down or possibly the wrong year switch?


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a couple pic's of the back of the dash & switch, maybe one can id the switch from these.

Any ideas are appreciated, thanks!

one more pic
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OK... first... if wiper switch carries attached an external resistor is 3 speeds... if not, is 2 speeds... otherwise, they are exact

second. 2 speeds is 3 positions... off-low-high... off is what powers the motor in reverse and keeps allways energized.

3rd, when in reverse, this makes to relocate the wiper main link arm offset camshaft, giving a new top and bottom position to hide the wipers down the hood.

4th... the actual Motor turn/cut off switch is built into the motor. What cuts off the power is an INNER lever... spins into the main gear shaft untill cut a power points inside to stop the motor at certain position of shaft clocking

Oh! and about the switch indexing, doesn't really matter but for correctness AS FAR I RECALL... switch shaft got a casted key and cluster got a slot.


editing... yes, here is the slot on housing

AN EXTRA NOTE...

do you say 71 ? it seems 72 and laters assembly. 71s got a diff switch and plug setup ( same wiring thought )

thanks Nacho, I cant be certain what year the cluster assembly came from as it came with the car, so 71 or 2 is still a guess for me.

I think i know what lever internally your referring too - a plastic arm inside the gear cluster ,I wonder if I've got it installed incorrectly in the gear case & its not contacting internally like it should. Does it swing around and push on the electrical contact arm in the gear case & break the circuit? Is that how it stops the motor? If so I have to assume its not making contact properly & needs to be "re-clocked" to its appropriate position - that said anyone have a pic of the "appropriate position"?

thanks again & much appreciated!

Oh yeah, I was trying to remember if the hole for the switch was notched and if it is switch has to be in correctly.

did you open the motor housing ? not talking about the armature which is easy to remove ( 2 long screws ), I mean the baseplate secion which is actually riveted between halves.

LONG TIME has gone since I rebuilt my 2 speeds motor. Got the teflon year broken from shaft and used a donor motor from a later model, where the gear interchanges... parking index difference is built into the housing with the power points location, but gears interchange.

as I can recall, the lever arm got a V cut and the gear got a V shaped key, what catches the lever up to the cut off position when spining reversed after being moved out from the park position when turning on in regular direction.

I don't think there is a chance to reassembly wrong this piece, but can't recall really.

maybe you lost some spring I think it gets the lever arm dragging againts the main gear? dunno

here is a pic of a kit which includes the cut off lever ( pink ) there we can see the V shaped slot. ( that white gear is not familiar to me thought )

http://www.ebay.com/itm/1970-1972-NOS-MO...673&vxp=mtr

Now, I can't really recall how its everything inside the motor housing... sorry, but I know is related with that piece

THIS IS the gear... if you look closelly, the V key is there molded to the teflon center ring... this is the key which drags the pink cut off lever shown on the other auction

http://www.ebay.com/itm/NOS-MOPAR-1971-7...a63&vxp=mtr

I'm guessing that's the same key I'm thinking of as I can't see it on my phone, have to look when on the computer . I did split the case, clean out all the old hardened grease and re rivit it back together with new grease, basically tore the unit down.

So it's very possible I installed the shut off key/lever wrong.
Wouldn't the logical switch knob layout be horizontal = off/ park, 1st position = lo, 2nd position = hi, mine currently is the reverse of this. What do you think??
Thx!

Evan, check your email.

If you have the dash on the bench and the motor next to it run a ground wire from the motor to the switch. These things use the body for ground and do odd things with out it

Thanks Doug , ill check it later, on whidbey now, thx.

Wiper motor and dash in car should of made that clear, sorry. But I have thought of running a ground wire from the switch to see if anything changes.

Thx.

Couple notes.
The switch needs to be grounded.
71 switch hole does not have the notch. 72-4 does. 71 cluster frame and switches are 71 only. Looks like you have a 72-4 switch.
Here are the different switches.

All E body rallye dashes only come with three speed wiper motors. At least for 1970 and 1971.