Windscreen Wipers 73
Thread Starter
Racer
Joined: Sep 2006
Posts: 251
Likes: 0
From: Victoria Australia
Windscreen Wipers 73
When operating the windscreen wipers on my 73, half the blade overshoots the edge of the windscreen when the wiperarm makes its full extension. (I hope that makes sense) Everthing seems to be secure and the blades return to the right position when the wipers are switched off. Anyone else had similar problem?
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
When operating the windscreen wipers on my 73, half the blade overshoots the edge of the windscreen when the wiperarm makes its full extension. (I hope that makes sense) Everthing seems to be secure and the blades return to the right position when the wipers are switched off. Anyone else had similar problem?
Mine does the same thing, D.S. only. Just noticed it the other day,only second time I've had them on. Haven't started to mess with them yet, not a high priority here in So. Cali.
Rich
Thread Starter
Racer
Joined: Sep 2006
Posts: 251
Likes: 0
From: Victoria Australia
I am trying to get my car a roadworthy certificate so I can register it. This is one of the things the "Gestapo Mechanic" wants me to fix. So I have to. I normally would put it on my 'things to do' list.
Racer
Joined: Mar 2005
Posts: 445
Likes: 0
From: SAN DIEGO(SANTEE) CA.
I just looked at them saturday, and it looks like all you have to do is to adjust the arm that moves the blade at the motor connection so the arm won't go as far to the right side of the windshield. I think, I'll check it out today and get back to you with what I find out.
Rich
It's only 6 A.M. here now so it'll be a couple hours at least.
Thread Starter
Racer
Joined: Sep 2006
Posts: 251
Likes: 0
From: Victoria Australia
Blue,
I just looked at them saturday, and it looks like all you have to do is to adjust the arm that moves the blade at the motor connection so the arm won't go as far to the right side of the windshield. I think, I'll check it out today and get back to you with what I find out.
Rich
It's only 6 A.M. here now so it'll be a couple hours at least.
I just looked at them saturday, and it looks like all you have to do is to adjust the arm that moves the blade at the motor connection so the arm won't go as far to the right side of the windshield. I think, I'll check it out today and get back to you with what I find out.
Rich
It's only 6 A.M. here now so it'll be a couple hours at least.
Cheers Rich
Race Director
Joined: Jul 2004
Posts: 12,694
Likes: 329
From: Scottsdale Arizona
I spent some time fiddling with mine this weekend. It looks like there are three places to adjust this, depending on how far off they are.
The easiets (and smallest) adjustment is in the wiper arm itself. In the lower, body part of the wiper arm you'll find a screw head on the outside. If you look at the inside, you'll find that the spring is attached there, but also a nut that will move the upper part of the arm a little. Have a look. I only found it because I had to remove mine as the spring is broken.
Second, there is some adjustment available to you at the arm where it is mounted on the transmission. I've never done this so don't know how much is possible there, but it looks like a fair bit.
The third and largest adjustment is on the pivot, under the wiper arm. It is a splined mount and by removing the arm from the spline you can readjust it anywhere that you want. I thought that it was nearly impossible to remove until BLACK SHARK posted the following pic.
There is a tool to release this retainer, but I used a screwdriver to depress it and got it off without any problem.
The easiets (and smallest) adjustment is in the wiper arm itself. In the lower, body part of the wiper arm you'll find a screw head on the outside. If you look at the inside, you'll find that the spring is attached there, but also a nut that will move the upper part of the arm a little. Have a look. I only found it because I had to remove mine as the spring is broken.
Second, there is some adjustment available to you at the arm where it is mounted on the transmission. I've never done this so don't know how much is possible there, but it looks like a fair bit.
The third and largest adjustment is on the pivot, under the wiper arm. It is a splined mount and by removing the arm from the spline you can readjust it anywhere that you want. I thought that it was nearly impossible to remove until BLACK SHARK posted the following pic.
There is a tool to release this retainer, but I used a screwdriver to depress it and got it off without any problem.
Last edited by CA-Legal-Vette; Feb 19, 2007 at 10:00 AM.
Melting Slicks
Joined: Mar 2002
Posts: 2,140
Likes: 7
From: Ohio
I think you will find that the arm will only fit on the pivot in one position as the assembly workers at the factory needed everything a one way only fit. The other two places mentioned are the only adjustment places.
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
When operating the windscreen wipers on my 73, half the blade overshoots the edge of the windscreen when the wiperarm makes its full extension. (I hope that makes sense) Everthing seems to be secure and the blades return to the right position when the wipers are switched off. Anyone else had similar problem?
there are two ways to fix it
1. near the center of the blade arm assy you will find linkage that has 4 bolts, two per side. lossen these bolts for the blade in question and with the blades stopped adjust inboard, i forget weather slide in or out, but you will see.
2. if you have no adjustment left due to wear, or are stuck on the side of the road in the rain, bend the arm a tad till it stops getting stuck (not the best solution, but works on side of road)
cheers
tim
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Melting Slicks
Joined: Aug 2002
Posts: 3,334
Likes: 4
From: Midland TX
I had this problem and my blades would go so far over that they would get stuck
there are two ways to fix it
1. near the center of the blade arm assy you will find linkage that has 4 bolts, two per side. lossen these bolts for the blade in question and with the blades stopped adjust inboard, i forget weather slide in or out, but you will see.
2. if you have no adjustment left due to wear, or are stuck on the side of the road in the rain, bend the arm a tad till it stops getting stuck (not the best solution, but works on side of road)
cheers
tim
there are two ways to fix it
1. near the center of the blade arm assy you will find linkage that has 4 bolts, two per side. lossen these bolts for the blade in question and with the blades stopped adjust inboard, i forget weather slide in or out, but you will see.
2. if you have no adjustment left due to wear, or are stuck on the side of the road in the rain, bend the arm a tad till it stops getting stuck (not the best solution, but works on side of road)
cheers
tim
That is the way to adjust the wiper arms.
Thread Starter
Racer
Joined: Sep 2006
Posts: 251
Likes: 0
From: Victoria Australia
Thankyou for your advice. I have fixed em. The previous owner painted the arms and in doing so it covered up the slide adjustment. ( I didn't see it) I scratched the paint out and away I went....Thanks again.
Le Mans Master
Joined: Jan 2006
Posts: 8,319
Likes: 7
From: Wilmington DE, Drive it like you stole it, 68 327 4 speed coupe
Happy to help
tim
Burning Brakes
Joined: Aug 2004
Posts: 856
Likes: 2
From: Tyler Texas
Bluey,
See page 96 of the 1973 Assembly Instruction Manual (AIM). It sets out the 7 specific steps for the " Windshield Wiper Setting Procedure".
Above information from Sweethence is correct. The linkage is adjustable. Each wiper transmission arm linkage is adjustable via two nuts--the linkage arm slides to adjust it. This is the main adjustment mechanism. Located in the center of cowl area--directly behind the wiper motor.
Also, there is a small screw located on each "rod and wiper blade assembly". It is used for adjustng the tips of the blades. Normally .75 inch from the Daylight Opening (DLO). Illustration is on page 96 of AIM.
See page 96 of the 1973 Assembly Instruction Manual (AIM). It sets out the 7 specific steps for the " Windshield Wiper Setting Procedure".
Above information from Sweethence is correct. The linkage is adjustable. Each wiper transmission arm linkage is adjustable via two nuts--the linkage arm slides to adjust it. This is the main adjustment mechanism. Located in the center of cowl area--directly behind the wiper motor.
Also, there is a small screw located on each "rod and wiper blade assembly". It is used for adjustng the tips of the blades. Normally .75 inch from the Daylight Opening (DLO). Illustration is on page 96 of AIM.
Last edited by Patrick73; Feb 21, 2007 at 08:32 AM.
Safety Car
Joined: Sep 1999
Posts: 4,930
Likes: 11
From: AnyTown NJ
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
Bluey,
See page 96 of the 1973 Assembly Instruction Manual (AIM). It sets out the 7 specific steps for the " Windshield Wiper Setting Procedure".
Above information from Sweethence is correct. The linkage is adjustable. Each wiper transmission arm linkage is adjustable via two nuts--the linkage arm slides to adjust it. This is the main adjustment mechanism. Located in the center of cowl area--directly behind the wiper motor.
Also, there is a small screw locaed on each "rod and wiper blade assembly". It is used for adjustng the tips of the blades. Normally .75 inch from the Daylight Opening (DLO). Illustration is on page 96 of AIM.
See page 96 of the 1973 Assembly Instruction Manual (AIM). It sets out the 7 specific steps for the " Windshield Wiper Setting Procedure".
Above information from Sweethence is correct. The linkage is adjustable. Each wiper transmission arm linkage is adjustable via two nuts--the linkage arm slides to adjust it. This is the main adjustment mechanism. Located in the center of cowl area--directly behind the wiper motor.
Also, there is a small screw locaed on each "rod and wiper blade assembly". It is used for adjustng the tips of the blades. Normally .75 inch from the Daylight Opening (DLO). Illustration is on page 96 of AIM.
Burning Brakes
Joined: Aug 2004
Posts: 856
Likes: 2
From: Tyler Texas
Jerry,
Answer: Yes. Adjustment to linkage should solve the problem of wiper blades hitting each other and locking up. Common C3 problem due to both design and the sliding adjustment arms moving slightly as the years go by. A minor adjustment should solve the problem.
First check to be sure you have the correct OEM style low profile wiper blade installed. This itself can cause the "locking wiper" problem sometimes.
I bet the 71 model AIM has a similar page as the 73 AIM showing how to adjust the wipers; and the factory clearance settings for proper operation.
Answer: Yes. Adjustment to linkage should solve the problem of wiper blades hitting each other and locking up. Common C3 problem due to both design and the sliding adjustment arms moving slightly as the years go by. A minor adjustment should solve the problem.
First check to be sure you have the correct OEM style low profile wiper blade installed. This itself can cause the "locking wiper" problem sometimes.
I bet the 71 model AIM has a similar page as the 73 AIM showing how to adjust the wipers; and the factory clearance settings for proper operation.
Safety Car
Joined: Sep 1999
Posts: 4,930
Likes: 11
From: AnyTown NJ
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15
