When you inflate the tires to the recommended inflation pressures, the factory-installed wheels and tires are designed in order to handle loads to the tire's rated load capacity. Incorrect tire pressures, or under-inflated tires, can cause the following conditions:
Inspect the tire pressure when the following conditions apply:
Inspect the tires monthly or before any extended trip. Adjust the tire pressure to the specifications on the tire label. Install the valve caps or the extensions on the valves. The caps or the extensions keep out dust and water.
The kilopascal (kPa) is the metric term for pressure. The tire pressure may be printed in both kilopascal (kPa) and psi. One psi equals 6.9 kPa.
kPa |
psi |
kPa |
psi |
---|---|---|---|
140 |
20 |
215 |
31 |
145 |
21 |
220 |
32 |
155 |
22 |
230 |
33 |
160 |
23 |
235 |
34 |
165 |
24 |
240 |
35 |
170 |
25 |
250 |
36 |
180 |
26 |
275 |
40 |
185 |
27 |
310 |
45 |
190 |
28 |
345 |
50 |
200 |
29 |
380 |
55 |
205 |
30 |
415 |
60 |
Conversion: 6.9 kPa = 1 psi |
Tires with a higher than recommended pressure can cause the following conditions:
Tires with a lower than recommended pressure can cause the following conditions:
Unequal pressure on the same axle can cause the following conditions:
Refer to the Tire Placard for specific tire and wheel applications and tire pressures.
Drum Brake Adjusting Hardware Replacement (J93, J94)
Removal Procedure
Warning: Refer to Brake Dust Warning.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the tire and wheel assembly. Refer to Tire and Wheel Removal
and Installation.
Remove the brake drum. Refer to Brake Drum R ...
Spark Plug Inspection
Spark Plug Usage
Ensure that the correct spark plug is installed. An incorrect spark
plug causes driveability conditions.
Ensure that the spark plug has the correct heat range. An incorrect
heat range causes the following conditions:
Spark plug fouling—Colder plu ...
Camshaft Cover Installation
Clean the sealing surfaces.
Note: The thickness of the sealing bead should be 2 mm (0.0787 in).
Apply sealing compound to areas (1) and (2). Refer to Adhesives, Fluids,
Lubricants, and Sealers.
Note: The installation procedure sho ...