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How often should
engine-coolant hoses be replaced, and how do I get a stuck one off its
fitting? C.S., via e-mail
Most engine hose manufacturers
agree that to be safe you should change these hoses every two years. However,
how long they actually last usually depends on how often you use your
boat and how well-maintained your cooling system is. In any case, replace
any hoses that are cracked, brittle, mildewed, or soft and spongy. The
last thing you want is for a hose to fail while offshore, especially if
it’s in a difficult position to get at.
If the hose won’t
slide off the fitting, chances are the problem is corrosion. Cut if off
about one inch from the end of the fitting, remove the clamp, slit the
remaining piece of hose lengthwise, and peel it off. Clean any corrosion
or deposits from the fitting by wrapping it with a piece of medium-grit
sandpaper and sanding it until the surface is bright. To ease installation,
wipe the inside of the new hose with liquid detergent before twisting
it onto the fitting.
Always replace the hoses
with the same type as those removed. Pleated hoses, for example, may not
have the same strength as reinforced molded hoses and may not allow the
same amount of coolant flow. Don’t forget to also check the condition
of all hose clamps, and install new ones—preferably two to a fitting—if
they show signs of wear or corrosion.
What tips can you
offer for buying paint rollers? J.M., via e-mail
First, buy a quality
roller. Bargain rollers will invariably lead to waste and a poor job,
as the roller will often begin to fall apart in the middle of the application.
Also make sure the roller matches the paint you’re using. If you’re
working with oil-based or epoxy paint, make sure that the rollers are
solvent-resistant. This information should be marked on the roller’s
cover sleeve.
When doing bottom painting
or using epoxy primer, use a roller with a 5/16- or 3/8-inch nap. For
topside finishes, a 1/8-inch-thick closed-cell yellow foam roller usually
works best. And always follow the paint manufacturer’s recommendations
for mixing and application of the product.
Need help with a
maintenance problem? Write to Maintenance Q & A, Power & Motoryacht,
260 Madison Ave., 8th Fl., New York, NY 10016. Fax: (917) 256-2282. e-mail:
kkreisler@primediasi.com. No phone calls, please.
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