View Full Version : Wiper arms parking
capt68 Dec 3rd, 07, 09:54 PM I've posted questions about wiring the wiper motor and switch and finally, with help from Team Camaro members, got them going. The motor and switch work perfectly.
Now I have another issue that I need help with. I can't get my wiper arms in the correct position. Prior to installing the wiper arms, I made sure the wiper motor rotated to the park position. I then put the transmission arm on the face of the motor, tightened the nut and put the wiper arms on. When I turn the switch on, the arms swing only half way across the windshield on the up stroke. When they are on the down stroke, the go all the way to the cowl. Reinstalling the wiper arms 4" higher than the normal park position results in the wiper arms operating with a perfect full stroke from top to bottom. The only problem is, when I turn the switch off, the wipers park 4" high. They park in the exact same place every time.
There are 2 things that I can think of as being the cause. 1) I'm not certain that I have first gen wiper arms. I'd like to find out the length of the correct wiper arms for a '67 Coupe, if someone has that info. 2) The Assembly Manual shows that the face of the motor has 2 marks; one at 3 o'clock and one at 6 o'clock. The manual shows the wiper trans arm to be in a position at or near 9 o'clock. There is a note stating that the arm, which also has 2 marks, must be installed within + - 5* of the marks. When I place the trans arm on the face of the motor, the lines match and the arm points straight down at the 6 o'clock position, not 9 o'clock. I can flip the trans arm 180* but the marks do not line up and the result is the same; the wiper arms park in the same position, 4" too high.
It seems logical that, if the arms make a perfect full stroke and park in the exact same position when installed 4" above normal, they should do the same if the arms are installed in the correct park position that all would be good. But.....it's not. Any suggestions will be appreciated.
Also, if anyone needs pics of the correct wiring for the wiper switch and the wiper motor for a '67, I'll be happy to send a few. Just email a request.
Thanks
hereitis67 Dec 4th, 07, 04:29 PM i got a 67. the blade is slightly under 15 inches. the arm is about 15 from where it goes into blade and to end of the arm. my blades sit about 1 inch from the trim. did you take the whole mechanism out and put it back in. maybe you got it installed backwards. aka left side on right side and right on left. i remember if backwards they dont work right.
67 RSS Dec 4th, 07, 06:40 PM The crank arm bolted to my motor is parallel to the ground pointing left while viewed from drivers seat looking forward (When wipers parked). Does that help?
I havent installed my wiper arms yet, but motor & transmission installed & tested ok.
capt68 Dec 4th, 07, 09:05 PM i got a 67. the blade is slightly under 15 inches. the arm is about 15 from where it goes into blade and to end of the arm. my blades sit about 1 inch from the trim. did you take the whole mechanism out and put it back in. maybe you got it installed backwards. aka left side on right side and right on left. i remember if backwards they dont work right.
I didn't even think about the possibility of installing the trans mechanism backwards. I'll check that.
Thanks
capt68 Dec 4th, 07, 09:15 PM The crank arm bolted to my motor is parallel to the ground pointing left while viewed from drivers seat looking forward (When wipers parked). Does that help?
I havent installed my wiper arms yet, but motor & transmission installed & tested ok.
Sounds like your crank arm is installed in the correct position. I wonder if I have the right crank arm. I may have the incorrect arm.
Thanks
Gary L Dec 4th, 07, 09:33 PM In the AIM there is a diagram on how to index the arm so the wipers park correctly.
67 RSS Dec 4th, 07, 09:51 PM Sounds like your crank arm is installed in the correct position. I wonder if I have the right crank arm. I may have the incorrect arm.
Thanks
Hey Cap...I think you got my fan shroud the other day!...
The length of the arm would establish the gain of the system. So if the wipers "stroke" the correct amount ie bottom of windshield to top then arm length is ok. Not sure if that is ok from your post.
Positioning the arm on the motor in the "correct" location is the offset of the system or starting point where they should park and return.
You said your arm faces down (me thinks)- asm manual and mine face left?
drdave69 Dec 11th, 07, 05:40 PM Just to hijack a little, I am also having wiper trouble with my Nova (I assume they are the same). The motor works and parks with the crank arm pointing to the left when viewed from behind (9 o'clock). When I attach the the transmission arms to it and turn it on, the crank arm starts downward and scrapes the cowl area. When it reaches the far right (still viewing from behind, 3 o'clock) it binds and stops. Any help with this is greatly appreciated.
1969ProStreetCamaro Dec 11th, 07, 05:56 PM Just to hijack a little, I am also having wiper trouble with my Nova (I assume they are the same). The motor works and parks with the crank arm pointing to the left when viewed from behind (9 o'clock). When I attach the the transmission arms to it and turn it on, the crank arm starts downward and scrapes the cowl area. When it reaches the far right (still viewing from behind, 3 o'clock) it binds and stops. Any help with this is greatly appreciated.
Have the transmission arms been previously removed? If they have, it's possible they have been reinstalled incorrectly(reversed) causing the binding that you are describing.
drdave69 Dec 12th, 07, 04:27 AM I have no way of knowing if they have been removed.
How do you know how they are supposed to be set up other than looking in the assembly manual?
What would explain the reason that it hits the cowl on the downstroke?
400bird Dec 12th, 07, 04:51 PM can you install the arm on to the motor in any other position?
i think you can swap it 180 degrees, that might be all you need
drdave69 Dec 14th, 07, 05:11 AM I worked on this again last night with no luck. The wiper linkage appears to be correct. The problem seems to be that the wiper motor crank arm travels too far to the passenger side and binds before it reaches the 3 o'clock position. This should be the point that it starts to return to the drivers side (if that makes sense to anyone) but it can't because it has reached its physical limit.
Can someone tell me the correct length of the wiper motor crank arm and short wiper linkage arm (the one that attaches to the motor)?
jeff5295 Dec 19th, 07, 11:07 AM I ran into this same problem last summer on my '69. When I turned the wipers on, they sweeped halfway across the winshield then crashed into the cowl vent (I'm glad the car was painted yet). Turned out that I had a 67 or 68 (or maybe Nova?) arm on my 69 motor. The keyed hole is turned 90 degrees between the two arms. I was lucky enough to find an original motor still installed on a junk car. The motor was bad, but it had the arm I needed. I put the different arm on and everything worked as it should. You might search my previous posts, as I was asking the same question last summer.
1969ProStreetCamaro Dec 19th, 07, 03:52 PM From a previous post in this thread.....
"Positioning the arm on the motor in the "correct" location is the offset of the system or starting point where they should park and return."
Some time ago Rick's had photos of two different wiper motor output arms on their website as he had used ones for sale. The "hole/slot" where the wiper motor output arm attached to the motor is different between the 2. One arm had the "hole/slot indexed parallel within the arm __ the other arm was indexed at an angle / within the arm.
drdave69 Dec 20th, 07, 05:24 AM So, it sounds like I need a different arm with the index slot NOT parallel with the arm.
If there is anyone out there with a Nova, see if you can tell if your wiper motor arm parks at the 8 - 9 o'clock position or elsewhere.
drdave69 Dec 20th, 07, 05:25 AM I ran into this same problem last summer on my '69. When I turned the wipers on, they sweeped halfway across the winshield then crashed into the cowl vent (I'm glad the car was painted yet). Turned out that I had a 67 or 68 (or maybe Nova?) arm on my 69 motor. The keyed hole is turned 90 degrees between the two arms. I was lucky enough to find an original motor still installed on a junk car. The motor was bad, but it had the arm I needed. I put the different arm on and everything worked as it should. You might search my previous posts, as I was asking the same question last summer.
Do you still have the other arm?
jeff5295 Dec 20th, 07, 11:48 AM Do you still have the other arm?
I should still have it, I'll have to look. If you are needing it for a '69 Camaro, this one won't work for you, I believe it's the 67-68 style. Whatever it is, it doesn't work with a '69 Camaro The '69 one that I found is in my car. I'll try to find the other one and maybe post a pic to show the slot orientation. Won't be until later tonight though.
drdave69 Dec 20th, 07, 12:57 PM Thats fine. The arm on my Nova is oriented to the 8 - 9 o'clock position. I was just wondering if the Nova is the same as Camaro or should be oriented to the 6 o'clock position. I guess I will never know unless I find someone with a Nova and take a look at theirs.
capt68 Dec 20th, 07, 01:49 PM I recently purchased another (my third) wiper motor arm and a new set of windshield wiper arms. I'm going to beat this thing yet!
1969ProStreetCamaro Dec 20th, 07, 07:25 PM I should still have it, I'll have to look. If you are needing it for a '69 Camaro, this one won't work for you, I believe it's the 67-68 style. Whatever it is, it doesn't work with a '69 Camaro The '69 one that I found is in my car. I'll try to find the other one and maybe post a pic to show the slot orientation. Won't be until later tonight though.
Hey guys, I found the pics that I referred to in an earlier post.
This pic of the wiper motor output arm fits 68-69 Camaro according to Rick's. You won't find this pic on their website. Looked for it on there. Good thing a saved it to CD. It just took me some time to find it.
http://i236.photobucket.com/albums/ff229/1969ProStreetCamaro/wb-266869outputarm.jpg
Notice how the slotted hole is indexed. Also notice the 2 marks on the output arm. I believe they also help in indexing the arm.
drdave69 Dec 21st, 07, 04:42 PM I played around with this again today. My crank arm is indexed like that but my slot is indexed in the other direction (places it at 8 o'clock instead of 9 - 10 o'clock) and it seems to be much longer. It has two distinct bends in it with a longer midsection. That could be my problem. I put it in my vise and bent it a little so that it is more compact and doesn't sweep as far. It now rotates 360 degrees but still partially binds. The wiper blade also doesn't reach the end of the glass but at least it works somewhat.
I'd still like to obtain the correct crank/arm and/or motor.
1969ProStreetCamaro Dec 21st, 07, 05:12 PM I wonder if the output arm you are describing is from something like a Chevelle or Monte Carlo ( or possibly a late 60's Impala or Caprice). The "2 distinct bends" are something that I have not experienced with Camaro's.
|