Chevrolet 10 Series 1968, Руководство по обслуживанию

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WHEELS AND TIRES 10-9
Fig. 2 —Front Wheels and Attachments
one side of the treads, whereas underinflation causes
wear on both sides. Camber wear requires correction of
the camber first and then interchanging tires.
There is, of course, no correction for high cambered
roads. Cornering wear is discussed further on.
Misalignment Wear--This is wear due to excessive
toe-in or toe-out. In either case, tires will revolve with
a side motion and scrape the tread rubber off. If mis­
alignment is severe, the rubber will be scraped off of
both tires; if slight, only one will be affected.
The scraping action against the face of the tire causes
a small feather edge of rubber to appear on one side of
the tread and this feather edge is certain indication
of misalignment. The remedy is readjusting toe-in, or
rechecking the entire front end alignment if necessary.
Uneven Wear—Uneven or spotty wear is due to such
irregularities as unequal caster or camber, bent front
suspension parts, out-of-balance wheels, brake drums
out of round, brakes out of adjustment or other mechan­
ical conditions. The remedy in each case consists of
locating the mechanical defect and correcting it.
Cornering Wear--When a truck makes an extremely
fast turn, the weight is shifted from an even loading on
all wheels to an abnormal load on the tires on the outside
of the curve and a very light load on the inside tires, due
to centifugal force. This unequal loading may have two
unfavorable results.
First, the rear tire on the inside of the curve may be
relieved of so much load that it is no longer geared to
the road and it slips, grinding off the tread on the inside
half of the tire at the excessive rate. This type of tire
shows much the same appearance of tread wear as tire
wear caused by negative camber.
Second, the transfer of weight may also overload the
outside tires so much that they are laterally distorted
resulting in excessive wear on the outside half of the tire,
producing a type of wear like that caused by excessive
positive camber.
Cornering wear can be most easily distinguished from
abnormal camber wear by the rounding of the outside
shoulder or edge of the tire and by the roughening of the
tread surface which denotes abrasion.
CKP 10 SERIES
CKP 20, CP30 SERIES CP30 W /DUAL REAR
40, 50 SERIES
CDLST 50 SERIES 50, 60 SERIES
60 SERIES
F ig. 3 —Rear Wheels and Attachments
CHEVROLET TRUCK SERVICE MANUAL