Peterbilt Model 320 Operator's Manual after 8-07 - Peterbilt Motors ...

PART 8: MAINTENANCE AND SERVICE
cure, wait about ninety days after the date of manufacture
before waxing. Don’t wax in the hot sun. Don’t friction burn
the paint with a buffing machine.
Aluminum and Chrome Surfaces
• Clean aluminum wheels and bumpers with warm water.
• Tar remover will get rid of heavy deposits of road grime.
• To prevent spotting, wipe aluminum surfaces dry after
washing.
• Under corrosive conditions, such as driving on salted
roads, clean aluminum parts with steam or high pressure
water from a hose. A mild soap solution will help.
Rinse thoroughly.
• Chrome surfaces are best cleaned with fresh water.
Wipe dry to preserve their luster. A commercial
chrome cleaner will remove light rust. After cleaning,
wax flat surfaces and apply a thin coat of rust preventive
lubricant around bolts or other fasteners.
Stainless Steel
Follow this procedure to clean and restore the finish of
stainless steel components:
Interior
1. In a plastic pail mix 4 tsp of alum (a powder found
in grocery stores or drugstores), with 32 oz. of water
(warm water will dissolve alum faster, but cool will
work).
2. Apply the alum/water solution with a pad of steel wool
(0000 grade or finer). GENTLY wipe the component
lengthwise; no pressure is necessary.
3. It is the chemical reaction between the carbon steel of
the wool and the alum solution that cleans the stainless,
not the scrubbing or abrasive action of application.
4. You may also use any stainless cleaner recommended
for cleaning boat parts.
Interior
Cleaning Cab Interiors
Peterbilt interiors are built using a variety of different materials
including fabrics, carpet, polyurethane, and painted
plastic surfaces. These cleaning procedures will ensure
that interior components remain in good condition for the
life of the vehicle.
R(08/07) Y53-6015 – 187 –