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small headlight glitch

Jim B

Well-known member
Joined
Feb 26, 2006
Messages
62
Location
Illinois
Corvette
1974 L82 Grey coupe
On my 74 one light doesn't quite go up all the way (about 2-3 inches low. But it goes down fine. Is this a simple adjustment? Or a usual vacuum problem?
 

MikeMc71

Well-known member
Joined
Apr 30, 2007
Messages
100
Location
Tucson, Arizona
Corvette
1970 Roadster, 1971 LT-1, 1971 Coupe
I'm no expert, but it sounds like a loose vacuum hose.
 

Stingray6974

Well-known member
Joined
Oct 12, 2000
Messages
494
Location
Garland,Texas
It sounds like you have a bad seal on the actuator. It only affects the lights going up.
Mike
 

Jim B

Well-known member
Joined
Feb 26, 2006
Messages
62
Location
Illinois
Corvette
1974 L82 Grey coupe
Thanks, How do I go about checking for aseal? Appreciate any help. Jim
 
B

bmotojoe

Guest
First I would check to manually open the headlight housing. With the engine off and both headlamp doors in the closed position stick your finger tips under the door housing in the front and lift up until the headlamp is locked open, if it locks open 2 or 3 inches lower then the other light then its an adjustment, if the headlight door opens as far as the other one it’s the actuator. To close headlight doors just start the engine. To check the seal I would remove upper and lower hoses of the actuator at the relay valve and mix up a solution of dish soap and water in a spray bottle. Spray the area around the rubber boot and manually open (BUT NOT ALL THE WAY) and close the headlight door. Open and close the door a few times and look at the boot for bubbles. This will tell you if the seal is leaking.
Here is a good link on replacing the seals for our C3.
http://www.corvettemagazine.com/2002/january/headlights/lights-1.asp
Brian
 

Stingray6974

Well-known member
Joined
Oct 12, 2000
Messages
494
Location
Garland,Texas
You need to slide the dust boot forward first to check the seal.
Mike
 

Jim B

Well-known member
Joined
Feb 26, 2006
Messages
62
Location
Illinois
Corvette
1974 L82 Grey coupe
Thanks, I'll check it out. Have a great one!
 

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