wiper cover problem
There’s clearance/door stop adjustment screws on each end of the underside of the door, but if it was working fine before, then it’s something else…
Give more details & pics…
One is that the wipers are not fully parked and the cover is hitting them when trying to close.
The second is that the vacuum canister is not adjusted correctly. You should have the "pie pan" type vacuum adapter. The adjustment is done by removing the bolts holding it in place and then adjusting the length of the shaft by turning the turnbuckle piece and then tightening the lock nut.
If no one adjusted the stop bolts for the cover they should not be an issue.
Thanks for responding. I will post pics this evening when I get home. Have adjusted the end bolts as far back as they will go. The stop screws are adjusted in as far as they will go and are not hitting stop pad. Have adjusted the vacuum module screw adjustment as far as it will go. Panel is still a quarter inch high.
One is that the wipers are not fully parked and the cover is hitting them when trying to close.
The second is that the vacuum canister is not adjusted correctly. You should have the "pie pan" type vacuum adapter. The adjustment is done by removing the bolts holding it in place and then adjusting the length of the shaft by turning the turnbuckle piece and then tightening the lock nut.
If no one adjusted the stop bolts for the cover they should not be an issue.

Usually it's hitting the wipers. Open the door with the override switch and lay a piece of paper over the passenger wiper and close the door. The paper should slide out if it's not pinched under the door.
With the car running, cycle the wipers and let them park, then use the override switch to open the door while someone watched the wiper arms carefully. If they go down a little farther once the door opens then you can see about adjusting the park vac-switch that has some adjustment slots on the two mounting screws. You can try sliding it back (away from the wiper arm) to see if that lets the wipers go down to park before getting trapped by the door.
If the wipers don't drop down when the door opens, you might be able to adjust the angle using the screws on the side of the arms to make them go down a little more when parked
If not there, you'll need to adjust where the wiper transmission arms attach to the motor itself.
If the paper isn't trapped between the arms and the door then as said, the vac-can is set way off.
The vac-can usually has way more throw than needed and was supposed to be pushing slightly farther than shut as there's a spring setup on the rod that allows it to move more once the door is fully closed but a lot of them are seized. You don't want it pushing too hard once closed or it's trying to twist everything.
M
Last edited by Mooser; May 15, 2024 at 05:21 PM.
The Best of Corvette for Corvette Enthusiasts















