we have a couple of newer volvo rock trucks at our work site and we can't get over 100 hours on the headlight bulbs, anyone have the same problems and did you find a solution to this problem, they take the H7 bulb thanks
I know with the loaders that the vibration of the lights cause a lot of problems, but I have not heard anything bout the haul trucks.
Assuming grounds are tight, you might check voltage at the bulbs with engine revved up. Voltage regulators might be a bit high. A small percentage of too high voltage will affect bulb life quite a bit even though everything works fine.
Exactly what Komatsu 150 said, grounds then excessive voltage. Tom
Can you replace them with LED's ..? If so they would pay for themselves really quickly if halogens are making less than 100 horus.
thanks for your replies will check into these suggestions
Just noticed your location. You may run into trouble with LED's as they don't get hot. Therefore when it snows the heat from the lamp will not melt the snow off the lens. In your case an HID lamp might be a better if even more expensive solution than LED. Just to give you an idea of prices in my area - Typically a complete halogen light would be around US$120, an LED about $350-400, and an HID about $600. However both LED & HID will go 5-10,000 hours so you get more bang for your buck.
If you are using halogen bulbs, do not touch with bare fingers, use paper or latex gloves. the oil from your skin on the glass can create hot spots and cuse a failure.