Chevrolet 30 Series 1967 Service Manual page 475

General Description ........................ ....................................10-1
Maintenance .............................. ... .............................. ...... 10-1
Tire Inflation ............................................................. ...... 10-1
Puncture Inspection and R e p a i r ........................................10-1
Jacking In struction s..........................................................10-1
Tire Inflation Tables for Highway Service
The 1967 truck is equipped with a wide range of tube or
tubeless type tires and wheels selected according to the
truck GVW rating and type of service. Wheels are of the
Tire Inflation
Tire pressures should be checked at least once a week
and inflated according to the following table. If payload
distribution or special equipment is such as to impose
heavy loads on the front axle, inflation of front tires
should be increased accordingly but should not exceed
pressure shown for rear tires.
• Avoid under inflation to prevent rim bruises, excessive
heat, and irregular or rapid wear.
• Avoid overinflation to prevent tire ruptures, hard rid­
ing, irregular or rapid wear and reduction of skid
resistance.
• Valve Caps should always be installed and tightened
firmly to prevent dust and water entering arid dam­
age to valve seats. The caps also act as an air seal.
Puncture Inspection and Repair
At each lubrication, tires should be checked for for­
eign objects in the tread or breaks in the tread or side­
wall. If tire is punctured or otherwise damaged, it
should be repaired using one of several repair kits avail­
able through tire manufacturers' outlets.
Tire Size
Tubeless Tube-Type
6.95-14
7.35-14
7.75-15 7.75-15
8.15-15
8.15-15
8.15-15
6.50-16 6.50-16
SECTION 10
WHEELS AND TIRES
INDEX
Page
. . . . . . 10-1
GENERAL DESCRIPTION
MAINTENANCE
Ply
For Heavy Duty Operation, Pressures Listed Below May be increased 6 P.S.I.
Rating
20 22
1000
4 950
8 1040 1100
8 1150 1210
1240 1300
4
8 1300
1240
6 1105 1165
Service Operations .................. .......................................
Wheel Nut T o r q u e s .............................. ............................ 10-2
Correcting Irregular Tire Wear
Wheel and Tire Balancing
Wheels ........................................................................ .....10-4
Tire Removal and In sta llatio n .................................... .....10-4
Tube Type . ............................................................ .....10-5
Tubeless T y p e ......................................................... .....10-9
short spoke, pierced disc, or cast spoke type depending
on model application. The dual rear wheel option is
available beginning with the C20 series trucks.
Jacking Instructions
The chart will assist in performing wheel and tire
changes using vehicle jacks supplied with or recom­
mended for use on Chevrolet Trucks.
Model
CP10, C20-30 Lower Control Arm Pivot
K10-20 Under Front Axle Near
P20-30-50 Spring Seat
40-60
Chevy Van Under Axle at Front
Spring
TIRE INFLATION TABLES FOR
HIGHWAY SERVICE
PASSENGER CAR TYPE
Tire pressures should be adjusted to the load being
carried by the tire as shown in the following charts.
severe service and heavy duty operation, it is perm issi­
ble to increase maximum pressures of passenger type
tires shown 6 psi with no increase in load carrying ca­
pacity. However, for optimum ride comfort, minimum
required pressures are recommended for front tires.
Loads and Inflation Pressures (Lb./Sq. In.)
26 28
24
1140
1050 1100
1210 1260
1160
1380
1270 1330
1370 1430 1490
1370 1430 1490
1225 1280 1330
.............................. .....10-2
.......................................... .....10-3
Jacking Point on Vehicle
Front Rear
Axle Housing
Axle Housing
Axle Housing
32 34
30
1190 1230
1360 1400
1310
1440 1500 1550
1610
1550
1550 1610 1660
1380
CHEVROLET TRUCK SERVICE M ANUAL
Page
10-2
For
36
1450
1600
1720