scrappy76

The headlights on my 92 go up and down fine but once the left one is open all the way, it has this small fluttering bounce at the end. Should I assume a gear replacement is coming ?

davewhtt

A tooth missing in the gear will cause this and wont fix itself. One of the 1st things i did on my 93. Dave

WVZR-1

I don't know that I'd be so soon to condemn the gear but certainly the plastic inserts for h/l lift. There's numerous sources for the parts, fabricating your own and what not. Spending the price of the gear and the inserts might be overkill.

383vett

Try a clear bra.

antfarmer2

bigtoys

If you're in there to do the inserts, doesn't it make sense to do the gears as well? There are numerous sources for brass or aluminum gears with inserts for less than 100.00. From what I've read, the labor involved would make it more than worth doing everything the first time.


I'm just curious, as I have a similar problem and have been advised that the gears need to be replaced.

antfarmer2

I bought the gears and the pucks only used the pucks. I would never use any type of metal gears! if it's going to tear up better the gear and not the motor!!!!! the pucks are made to wear out.

bigtoys

Good to know and that makes perfect sense. the motor would be much more costly to replace! Thanks!

94corvetteC4

I was told to just replace the pucks but like you I thought that if I'm going to take these motors apart I'm going to replace everything. I got the gears and pucks as a package deal off Ebay for $36 delivered. Don't use metal gears. The motor has a metal worm gear that turns the plastic gear. If you replace the plastic gear with a metal gear, brass, copper, aluminum or whatever metal it is made from that could cause wear on the worm gear more so than the plastic gear would. If you wear out the worm gear you are looking at replacing a motor rather than just a gear.


My only regret was not getting new gaskets for the cover you have to remove to access the gears and pucks. All the videos I watched and pics I have seen and feedback on here never suggested that new gaskets might be necessary. When I pulled the cover off both my motors the gaskets were already broken and missing sections. The previous owner had already done at least one over hall on the motors and destroyed the gaskets in the process. None of the dealers or parts stores had the gaskets in stock so I had two choices. Order the gaskets and not drive the car till they come in or RTV makeshift gasket. I went with RTV since at the time I had to drive the car and couldn't do so without the headlights.


The job isn't as bad as some make it out to be. It took me 1.5 hours start to finish to remove, repair and reinstall both headlights.

bigtoys

Thanks for that feedback as well. It definitely makes sense that the headlight gear should be the weak point, and not cause undue wear to the worm gear. I guess I thought that either brass of aluminum would be soft enough so as not to damage the worm. Guess I will stick with plastic!


Also, glad to hear that the job took less than 2 hours. some of the videos I've seen make a root canal more appealing!

94corvetteC4

Definitely stick with the plastic gear. My gears looked good but I replaced them anyway just for the peace of mind. The pucks however had turned to dust.

The passenger headlight had a few different parts in it than the driver side so expect that when you take them apart. Also the passenger side gear was hard to pull out. I was thinking that since it was a little different that maybe I had to do something other than just pull the shaft and gears out. Turned out that I just had to pull harder to get it out. I think I grabbed the shaft with pliers and just yanked it out. It was tight going back in also. I had to push hard on the gear to get it to snap back into the housing. Once the gear was back in it spun freely.

I found it was easier to put grease in the slots on the gear where the pucks sit and stick the pucks in there then put the gear with pucks back in the housing.

Chris**

Just did mine this weekend, pucks were toast, gears were fine. I would order the pucks and take a look first.

One thing i did not realize is that the puck kits are for one headlight so order two kits or confirm the kit comes with enough for both lights (6).

antfarmer2

you can get the pucks in the help section in part stores or I found six pucks on ebay cheap.

scrappy76

I know its not alot of work, but if I am opening them up I will replace the pucks and gears. I will go with plastic. Do not want metal to metal and mess up a motor or motor gear.

bigtoys

Thanks for all the helpful info. I think I would have made a mistake with the metal gears.

73n95

30 minutes start to finish for one headlight. I removed the entire headlight/cover assembly. Piece of cake. Note; remove the 2 screws on the bottom first. I didn't know they were there and when I removed the side nuts the frame flexed and snapped. PC7 epoxy took care of it but just a precaution. I agree, get the gaskets. I broke one and didn't realize it till all was done. There is a little crack in one of the gaskets that I'll have to cover with RTV. Buy, do they work nice now.
PS, is it really a problem if there is a gap in the gasket? I din't see them getting soaked unless I'm in deep water.

scrappy76

Where do you live, you can do mine, lol.
I am ordering the parts today. Hopefully I will have by this weekend and I will knock them out.

WVZR-1

If you've not ordered parts yet it might be wise to also purchase the mentioned gaskets. I believe it foolish not to BUT they certainly in many/most situations don't require replacement.