Wiper wont park in the correct spot

[AirSpeed]

The wipers on my 72 wont park all the way down when I turn them off, they travel all the way down while operating but park about 6" up from where they should be. I have to turn them on and off quickly to get them down.
Any ideas what is going on? Thanks!

[70cst]

I'll take a guess and say gears/linkage is worn.

[AirSpeed]

Thats what I thought but the wiper transmission is in great condition and it even has a newer motor, I wonder how it knows where to park? Does the motor have a cam on it that opens a switch? are they adjustable? I dont want to tear into before I know what I am doing.
Thanks!

[70cst]

TTT...for those whi can be of better help than I.

[cdowns]

is this with a wet or dry windshield?

[special-K]

Does it always happen or only when you turn them off when they are almost parked?If they all the way to the right when you turn them off,do they park ok?Do they seem to travel too far to the right?

[67chevy2wd]

Do they always park in the same spot, but just not all the way down? Another thing to check into would be the wiper motor. There should be a little switch inside the motor that tells it where to shut off at after you shut the switch off. There would be a little cam lobe on the motor shaft that would actuate this switch. Not sure if it is adjustable though.

[AirSpeed]

They always park in the same spot when I turn them off, no matter where they are on the windshield when I turn off the switch. It happens wet or dry. When I turn off the switch they travel through the spot where they should park and move up about six inches past, six inches up from where they should rest. They travel perfectly across the windshield, meaning they dont go to far in either direction so removing the arms and moving them down wont change where they park.
It's more annoying than anything. The motor looks newer, like it had been replaced in the last few years. It's feels like it is mounted solidly, I took the cowl off and checked all the linkage and everything was in great condition.
Thanks again!

[white 67]

Mine did this last year and i think it was the switch that fixed it. It was either that or the motor. I would start with the switch as it is easyer than the motor.

[GREASEMONKEY72]

mine do the same thing, nomatter when you turn it off and wet or dry

[special-K]

Well,I don`t know all the inner workings of the motor,but it`s in the motor.The motor is good,but whatever makes it park is bad.That`s how all vehicles were at one time.You`ll have to remove the motor.It could be a matter of cleaning or lube.Probably need a new unit.

[67chevy2wd]

Is the wiper linkage connection on the motor shaft orientated in the right spot. I can't remember if it can only be installed one way or not. If it is in the right spot then I would put a new motor in.

[clay68c10]

I'm pretty sure the linkage can only go on there one way. I've messed with mine a few times and they do the same thing. If you swap a part and it fixes it, let us know.

[AirSpeed]

I will check it out some more tomorrow, I went on to another project today, straightening my tailgate, it was bent 2 3/4" out on the bottom, its perfect now.
Thanks for all the suggestions! I will check it out tomorrow and report back when I figure it out! Thanks! Aaron

[68C15]

the linkage arm can only go on one of two ways (like a double D shaft).
when you turn the switch, the dash switch provides a ground to either one or both windings (low or high). when you turn it off the sliding park switch on the pinion gear provides the ground path until it opens. the pinion gear is attached to the output shaft (pressed on IIRC) and is driven by the worm gear (part of the motor shaft). I think your pinion gear has moved on the output shaft since the wipers travel in the correct arc and distance they just park in the wrong spot. this theory is supported by you saying they park late.
take your motor apart and you will see just what I mean.

[es67chevy]

Bringing up an old thread in hopes that a solution was discovered or someone else has more info. My problem is similar, but I just replaced the motor with a new one from O'Reilly. It parks itself about 6 inches too high. When I turn the wipers back on, it completes the down stroke first.

[NINERS1]

bump; mine do the same thing, pretty sure it's all factory original, wiper work great just wont park at the bottom. just got used to getting out and pushing them down!

[LockDoc]

-
There might be some help in this thread...

http://67-72chevytrucks.com/vboard/s...d.php?t=413551

The park switch is inside the wiper gear box.

The paragraph that relates to this problem:
If the motor stops immediately when switched off (doesn't return to park position), first check the motor's ground strap. Since the motor is mounted on rubber cushions, it's grounded via a copper strap attached under one of the mounting screws. This is the ground for the park switch so the parking feature won't operate if the ground strap is missing, dirty, or corroded. If the ground strap checks out okay but the motor still doesn't go into park then the problem is most likely a worn out or dirty park switch. The park switch is located inside the motor's gearbox so some disassembly is required to check/clean the switch. I recommend consulting a good repair manual for the motor disassembly procedure.

LockDoc

[es67chevy]

Originally Posted by LockDoc

-
There might be some help in this thread...

http://67-72chevytrucks.com/vboard/s...d.php?t=413551

The park switch is inside the wiper gear box.

The paragraph that relates to this problem:
If the motor stops immediately when switched off (doesn't return to park position), first check the motor's ground strap. Since the motor is mounted on rubber cushions, it's grounded via a copper strap attached under one of the mounting screws. This is the ground for the park switch so the parking feature won't operate if the ground strap is missing, dirty, or corroded. If the ground strap checks out okay but the motor still doesn't go into park then the problem is most likely a worn out or dirty park switch. The park switch is located inside the motor's gearbox so some disassembly is required to check/clean the switch. I recommend consulting a good repair manual for the motor disassembly procedure.

LockDoc

Yeah, thanks, Leon. I found this one too, but skeptical that this is my prob since the motor is brand new. It does return to a 'park' position. It's just not on the end of a full rotation. For some reason, the bracket that actually goes on the motor is offset a bit. If it weren't, it would be perfect. I'll attach some pics that will hopefully explain what I mean. In the 4th picture, I'm holding the bracket where it SHOULD go when parked. Picture 5 shows how there is a slight angle to the hole which forces the bracket to face a bit down from where it should park. I may end up just rebuilding the bracket and cutting my own hole, but wanted to see if there was something else I could do before modifying.

[gcburdic]

Seems like I saw something in the assembly manual on this....specifically where you should align that bracket.....

[bucketObolts]

My 07 ram does the same exact thing. I've been through 3 wiper motors in the last year with no permanent fix. I hope you figure something out because I'm out of answers and patience. Obviously different setups but still...wipers are wipers

[LockDoc]

Originally Posted by gcburdic

Seems like I saw something in the assembly manual on this....specifically where you should align that bracket.....

Is this what you were thinking about Geoff?

LockDoc

[es67chevy]

Interesting!! I wonder what you do to "reset" it? I've tried manually putting it in the position it needs to be in, but as soon as i start the wiper motor again, it goes back to that same position. Maybe I need to unplug it too?

[gcburdic]

Originally Posted by LockDoc

Is this what you were thinking about Geoff?

LockDoc

Leon to the rescue!!!....yes sir that's the one I used to set the "park" of my wipers
That assembly manual on CD looks to be very helpful Leon!!!

[es67chevy]

Originally Posted by gcburdic

Leon to the rescue!!!....yes sir that's the one I used to set the "park" of my wipers
That assembly manual on CD looks to be very helpful Leon!!!

How exactly did you set the park position? It doesn't seem to matter if I manually crank the motor around to the starting position. It just repositions itself the next time I run it. Do you have to open up the wiper motor case or something like that?