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06-19-2012
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#1 |
Join Date: Apr 2007
Location: Greenwood Indiana
Posts: 50
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Headlight gear box.
After getting my new tires put on, I took the ZR-1 out for the first time in 24 months. Had quite a few people stop and look at my car and comment how they had read about ZR-1's, but never saw a real one. Nice to see that there are still some people who can look at a C4 and recognize a major difference!
Later in the evening I left to go home and when I turned on the head lights, they rotated half way around a quit. I made me some new pucks out of Delrin and rebuilt them. Head lights work as new again. I thought it was quite odd that both sides failed at the same time. When I opened the gear box, both looked they had salt in them. I wonder if the lube that was applied originally causes the original pucks to desintigrate?? I also wonder what the OEM pucks were made of? |
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06-19-2012
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#2 | |
   
Join Date: May 2007
Location: Peoria, AZ
Posts: 9,155
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Re: Headlight gear box.
Quote:
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GOLDCYLON - 91 ZR-1 #2014 GOLDCYLON - 90 ZR-1 #2794, 4L60e (Formerly Schrade's) GOLDCYLON - 11 CTS-V Arizona State Director  91 WHITE/BLACK #2014. 380 P&P&PCed,Ported Heads, Jeal Long tubes, Corsa Exhaust/FIKSE FM-5s /LED TLs, LED Headlights, Front Wilwood 6 piston narrowlite calipers and rear Wilwood caliper street shop mod,CNCed Coolant Pipes,TPI Cvr,Filter cover,Stainless Bolts, DRM/DOM PROM /ZFDOC mod build #102,DRLs,BMAD with stainless Debris Screen,Coplan Air Blaster, Pioneer APP Radio 4,Brey-Krause HB,Sub Bar,Fire extinguisher seat mount,DRM Coilovers,LEDs everywhere,Compass mirror (orange),V1 DIC hidden display, Homelink sun visor, Carbon Fiber top x3 and APSIS Carbon Fiber interior, APSIS CF Steering Wheel/NAPA Leather, Banski trailing arms, Guldstrand front suspension,urethane bushings from Prothane (total suspension) ZFDoc drive shaft safety loop, raptor shift light (orange),AO engineering louver front plate, Console seat cushion, 96CE seats with black custom Sheepskins, ss billet catch can,Viper remote entry/alarm,Cragar Rear Louvers,LED side louver lights, Dewitts Radiator with SPAL fans and a Woods 160 T-Stat 90 RED/BLACK #2794. 4L60e Automatic Stage V by RPM Transmission, TCI Dedicated TCM, OBX Stainless Headers, Corsa Exhaust, SAN Secondaries and Haibeck PROM, Exotic Muscle Coil overs, LED Interior Lights, LED Tail Lights, LED Headlights, 94 Sport seats with black custom Sheepskins , Cragar rear louvers, GS Front calipers, Banski Trailing arms, APSIS Carbon Fiber steering wheel, Front and Rear Baer Eradispeeds, DRLs, Guldstrand front suspension,urethane bushings from Prothane (total suspension), Dewitt's Raditor with Dual SPAL fans and a Haibeck 170 T-Stat 11 RED/GREY CTS-V |
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06-19-2012
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#3 |
 Join Date: Nov 2011
Location: Dunbarton NH
Posts: 7,459
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Re: Headlight gear box.
Gordan Killebrew advised me that because we all run glass headlights as opposed to the plastic ones Chevy put in them the gears are sure to fail.
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06-19-2012
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#4 |
 Join Date: Aug 2011
Location: Evergreen, Co.
Posts: 346
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Re: Headlight gear box.
Gordon told me the same thing, but it is the bushings that turn to powder inside the headlight motor housing, yet the gears remain serviceable. My Z with 3,500 miles had bushings that were disintegrated, so the original question was what caused this to happen over time?
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Bert Rankin 1991 ZR1 Steel Blue / Steel Blue #1029 Haibeck chip, slotted rotors, camber brace, C-beam plates, OBX exhaust, Nitto NT555 tires [SIGPIC][/SIGPIC] |
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06-19-2012
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#5 |
Join Date: Jan 2010
Location: Mystic CT
Posts: 2,633
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Re: Headlight gear box.
The usual GM quality...
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06-19-2012
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#6 |
Join Date: Jan 2007
Location: Pineville, LA
Posts: 586
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Re: Headlight gear box.
Make sure and change the little screws that hold the motor on as well. On the 89 I had changed the bushings and then about a year later the screw head popped off and the motor tore up the brushes on the inside. This was about 4 years ago and since I don't drive it much I still haven't fixed it. It wouldn't have been an issue if I had changed them in the first place to SS or something else. Two screws per motor, you can see one in this picture next to the white and green wires:
 Don't get cheap like I did or just think they will hold. Spend a few cents and be safe. The ones on the 89 looked no worse than the ones pictured above. Daniel |
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