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Old 02-24-2013, 12:37 AM   #1
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Default Undercoating tips.

Planning on doing a good undercoating. What all should I hit?
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Old 02-24-2013, 02:21 AM   #2
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I'd hit the chassis, gas tanks, axle housing, bed underside, oil pan, leaf spring hangers, motor mounts, transmission mounts/cross member, steering components...just to name a few.
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Old 02-24-2013, 07:58 AM   #3
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To add:

On top of the fuel tanks, top and center sections of the frame, brake lines, firewall, fender wells, inside all the body panels on the bed, under the doors and lower door jambs, under the rockers, floor, transmission hump, behind the bumper etc. Any major surface under the truck that can be prone to rust. If you have a spare tire under the truck, remove it to get the the underside of the rear tank.

If you are using oil undercoat, avoid spraying any rubber parts like you're weather strip, motor mounts or body bushings. The oil swells up the rubber and they crack when they dry up.

Also void spraying the muffler and catalytic converters, they will smoke and stink for a good week.

Before you start, give you're under body a real good cleaning with a hose or pressure washer to get all the loose stuff off. When its dry, you will have a clean surface for the undercoat to stick on.
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Old 02-24-2013, 08:00 AM   #4
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I live in Nova Scotia., Canada and was wondering how early in the year should it be done?
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Old 02-24-2013, 08:12 AM   #5
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Recommended be done before the first snowfall. Easier to undercoat, less cleaning to do and the salt hasn't reached the metal. You can still have it done or do it yourself, it will just take longer to do the job.
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