Right side headlamp not flipping all the way up .. - ZR-1 Net Registry Forums

Vette73 · 07-20-2016

Out driving last night and I said to myself- man my eyesight is getting worse at night.....Until I pulled behind a vehicle at a red light...

I noticed my right headlight was out...When I got home I saw that it was lit but it was pointing straight down toward the pavement ....It wasnt flipping all the way to the front .....It was too dark and too late to take a look...Didn't even bother to open the hood...

Headlamp assembly seems to be not flipping up all the way so the light is not pointing straight...

Anybody ever have this?

Paul Workman · 07-20-2016

Common problem with 21+yr old C4s. The bushings and/or the nylon gear teeth break off or wear out.

I've replaced the gears/bushings now on both our 90 and 91 ZR-1s. Easy fix with simple tools.

I got my kits from Mid America Motorworks for the 90, and for the 91 from Jerrys Gaskets our ZR-1 supporter extraordinaire!

G8nightman · 07-20-2016

2nd the above comment.

32valvesftw · 07-20-2016

Redoing the headlight gears is fun job, my son and I did mine recently. Actually my son (17 yrs old) did the job I just pointed. There are some things you have to pay attention to but there are some good tutorials on Youtube.

tccrab · 07-21-2016

One side is a lot more difficult than the other, don't remember which though.
I bought the little round bushings at the local Napa Auto Parts store, was shelf item only like $3.00.
https://www.youtube.com/watch?v=QPjZiHGyngE

'Crabs

ZRapid-1 · 07-21-2016

Quote:

Originally Posted by 32valvesftw

Redoing the headlight gears is fun job, my son and I did mine recently. Actually my son (17 yrs old) did the job I just pointed. There are some things you have to pay attention to but there are some good tutorials on Youtube.

A similar thing here.
I did one side.
Then my son did the other side.
Not that complicated and it gives you a sense of satisfaction when you're done.

Vette73 · 07-21-2016

Ok guys thanks for the info...I will check it out....

ZRapid-1 · 07-21-2016

Same thing happened to me.
The plastic plugs harden and then turn into powder.

The gears were fine though and didn't need to be changed.

Plenty of How-To videos on YouTube.

I used Dorman Part Number 74410. They are available at any Auto Parts store or search the web.

Buy two packs and do both headlights. It's just a matter of time before the other side fails.

07-20-2016	#1
Vette73 Join Date: Nov 2014 Location: Brooklyn ny Posts: 1,045	Right side headlamp not flipping all the way up .. Out driving last night and I said to myself- man my eyesight is getting worse at night.....Until I pulled behind a vehicle at a red light... I noticed my right headlight was out...When I got home I saw that it was lit but it was pointing straight down toward the pavement ....It wasnt flipping all the way to the front .....It was too dark and too late to take a look...Didn't even bother to open the hood... Headlamp assembly seems to be not flipping up all the way so the light is not pointing straight... Anybody ever have this?

07-20-2016	#2
Paul Workman Join Date: Nov 2007 Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri Posts: 6,493	Re: Right side headlamp not flipping all the way up .. Common problem with 21+yr old C4s. The bushings and/or the nylon gear teeth break off or wear out. I've replaced the gears/bushings now on both our 90 and 91 ZR-1s. Easy fix with simple tools. I got my kits from Mid America Motorworks for the 90, and for the 91 from Jerrys Gaskets our ZR-1 supporter extraordinaire! __________________ Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry

07-20-2016	#3
G8nightman Join Date: Dec 2007 Location: NYC Posts: 1,189	Re: Right side headlamp not flipping all the way up .. 2nd the above comment. __________________ 90 Chevy ZR1 LPE #2315 'SOLD' 90 Chevy ZR1 LPE #2774 'SOLD' 91 Chevy ZR1 Callaway aerobody 91 Chevy ZR1 #1512 91 Chevy ZR1 #951 95 Chevy ZR1 #338 'SOLD' 91 BMW 850i 94 BMW 850csi 95 BMW 850csi 94 Lotus Esprit S4 07 Benz CLS550 06 BMW M5 "SOLD"

07-20-2016	#4
32valvesftw Join Date: Jun 2015 Location: Texas Posts: 530	Re: Right side headlamp not flipping all the way up .. Redoing the headlight gears is fun job, my son and I did mine recently. Actually my son (17 yrs old) did the job I just pointed. There are some things you have to pay attention to but there are some good tutorials on Youtube.

07-21-2016	#5
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,655	Re: Right side headlamp not flipping all the way up .. One side is a lot more difficult than the other, don't remember which though. I bought the little round bushings at the local Napa Auto Parts store, was shelf item only like $3.00. https://www.youtube.com/watch?v=QPjZiHGyngE 'Crabs __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]

07-21-2016	#8
ZRapid-1 Join Date: Sep 2010 Location: Bethany, CT Posts: 119	Re: Right side headlamp not flipping all the way up .. Same thing happened to me. The plastic plugs harden and then turn into powder. The gears were fine though and didn't need to be changed. Plenty of How-To videos on YouTube. I used Dorman Part Number 74410. They are available at any Auto Parts store or search the web. Buy two packs and do both headlights. It's just a matter of time before the other side fails.