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Topic: Slow moving headlights

in Forum: C3 General Discussion


Slow moving headlights

Posted: 6/3/24 11:43am Message 1 of 3
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Waterford, MI - USA
Joined: 9/13/2002
Posts: 1754
Vette(s): 1973 Red coupe

After just dealing with the RH headlight moving slow or just not opening all the way I decided to check things out. Last fall I purchased a full set of relays/actuators 

first I checked vacuum with the engine idling and found it to be above 16 at the manifold. 
I then changed out the relay but that did not change anything.

so I went through the fun of changing the actuator. From under the car I disconnected everything but I could not get it to push out of the bracket so I lowered the car down, opened the hood and fished it out of the bracket but could not get it out with the hood open. I was able to push it toward the center where it fit below the edge of the hood. I closed the hood, lifted the car back up and pulled it out through the bottom. Then I had to remove the knuckle off the threaded rod. Rust and time had it stuck pretty good so I removed the plastic bushing and heated the piece to get it to unscrew. I chased the threads with a tap to clean the rust out of the threads. 
I fished the new unit back into place and reattached everything. 
Now it works like it should again.

Having a 4- post lift definitely made this job easier.

after looking over the old actuator I could see the issue:

 



|UPDATED|6/3/2024 11:43:18 AM (AZT)|/UPDATED|



Brian - NCM Lifetime Member

73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System

Dewitt radiator and dual electric fans
Borgeson Steering box
 


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Re: Slow moving headlights

Posted: 6/3/24 7:40pm Message 2 of 3
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Burke, VT - USA
Joined: 1/23/2002
Posts: 7283
Vette(s): SOLD - "The Toy" - '70 Convertible
SOLD - "The Beast" - '90 ZR-1 (#682)
SOLD - "Betty" - '28 Ford Model A Tudor
Sold - "BLKBRRD" - '78 Pontiac Trans Am
"BLUBYU" - '04 Coupe

Definitely nice to have something working again after chasing through a difficult project!  Nice work...!!!




Jim Olson 

"The Toys"...!!!  Save the Wave!

Where I've been in a Corvette...!!!

Re: Slow moving headlights

Posted: 6/4/24 9:41am Message 3 of 3
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas

Nice job, Brian! Those actuator seals, as well as relay seals cause all kinds of problems. Keep your old ones and replace the seals, then you'll have spares! 




Joel Adams
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in Forum: C3 General Discussion


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