DESCRIPTION
The SAE bolt strength grades range from grade 2 to grade 8. The higher the grade number, the greater the bolt strength. Identification is determined by the line marks on the top of each bolt head. The actual bolt strength grade corresponds to the number of line marks plus 2. The most commonly used metric bolt strength classes are 9.8 and 10.9. The metric strength class identification number is imprinted on the head of the bolt. The higher the class number, the greater the bolt strength. Some metric nuts are imprinted with a single-digit strength class on the nut face. Refer to the Fastener Identification and Fastener Strength Charts .
| Bolt Markings | 8.8/8.9 | 10.9 | 12.9 | |||
|---|---|---|---|---|---|---|
| Bolt Dia. | N.m | Ft. Lbs. | N.m | Ft. Lbs. | N.m | Ft. Lbs. |
| 6 | 12 | 105* | 14 | 120* | 16 | 12 |
| 8 | 25 | 250* | 32 | 23 | 38 | 28 |
| 10 | 54 | 40 | 60 | 45 | 74 | 55 |
| 12 | 95 | 70 | 108 | 80 | 135 | 100 |
| 14 | 155 | 115 | 175 | 130 | 216 | 160 |
| 16 | 243 | 180 | 324 | 210 | 324 | 240 |
| * Inch Lbs. | ||||||
Bolt Markings and Torques - Metric
| Bolt Markings | Grade 5 | Grade 8 | ||
|---|---|---|---|---|
| Bolt Dia. | N.m | Ft. Lbs | N.m | Ft. Lbs |
| 1/4 - 20 | 10 | 95* | 14 | 125* |
| 1/4 - 28 | 10 | 95* | 17 | 150* |
| 5/16 - 18 | 22 | 200* | 30 | 270* |
| 5/16 - 24 | 26 | 240* | 33 | 300* |
| 3/8 - 16 | 40 | 30 | 55 | 40 |
| 3/8 - 24 | 47 | 35 | 60 | 45 |
| 7/16 - 14 | 68 | 50 | 88 | 65 |
| 7/16 - 20 | 74 | 55 | 95 | 70 |
| 1/2 - 13 | 101 | 75 | 135 | 100 |
| 1/2 -20 | 115 | 85 | 150 | 110 |
| 9/16 - 12 | 135 | 105 | 182 | 135 |
| 9/16 - 18 | 155 | 115 | 202 | 150 |
| 5/8 - 11 | 202 | 150 | 263 | 195 |
| 5/8 - 18 | 215 | 160 | 284 | 210 |
| 3/4 - 10 | 230 | 170 | 297 | 220 |
| 3/4 - 16 | 236 | 175 | 304 | 225 |
| 7/8 - 14 | 405 | 300 | 540 | 400 |
| * Inch Lbs. | ||||
Bolt Markings and Torques - U. S. Customary
Scheme 1
| WARNING | Use of an incorrect fastener may result in component damage or personal injury. |
Fasteners and torque specifications references in this service information are identified in metric and SAE format.
During any maintenance or repair procedures, it is important to salvage all fasteners (nuts, bolts, etc.) for reassembly. If the fastener is not salvageable, a fastener of equivalent specification must be used.
Most stripped threaded holes can be repaired using a Helicoil®. Follow the vehicle or Helicoil® recommendations for application and repair procedures.
DESCRIPTION - Vehicle Identification Number
The Vehicle Identification Number (VIN) plate is located on the lower left A-pillar and is visible through the windshield. The VIN contains 17 characters that provide data concerning the vehicle. Refer to the VIN decoding chart to determine the identification of a vehicle.
Scheme 2
| 1 - A-PILLAR |
|---|
| 2 - VIN CODE PLATE |
The VIN is also imprinted on the
- vehicle safety certification label.
- frame rail.
To protect the consumer from theft and possible fraud, the manufacturer is required to include a check digit at the ninth position of the VIN. The check digit is used by the manufacturer and government agencies to verify the authenticity of the vehicle and official documentation. The formula to use the check digit is not released to the general public.
| POSITION | INTERPRETATION | CODE = DESCRIPTION |
|---|---|---|
| 1 | Country of origin | 1 = manufactured by Chrysler LLC |
| 2 | Make | J = Jeep |
| 3 | Vehicle type | 4 = multipurpose passenger vehicle without side airbags. |
| 8 = multipurpose passenger vehicle with side airbags. | ||
| 4 | Gross Vehicle Weight Rating (GVWR) | G = (2268 - 2721 kg) 5001 - 6000 lbs |
| 5 | Vehicle line | P = Liberty Left Hand Drive (4X2) |
| N = Liberty/Cherokee Left Hand Drive (4X4) | ||
| 4 = Cherokee Right Hand Drive (4X4) | ||
| 6 | Series/Transmission | 2 = Lowline |
| 5 = Premium | ||
| B = 4 Speed Automatic (DGV) | ||
| C = 6 Speed Manual (DEH) | ||
| E = 5 Speed Automatic (DGJ) | ||
| 7 | Body Style | 8 = Sport Utility 4 Door |
| 8 | Engine | K = 3.7L V6 CYL Magnum Gasoline (EKG) |
| 5 = 2.8L I4 CYL Turbo Diesel Next Gen (ENS) | ||
| 9 | Check Digit | 0 through 9 or X |
| 10 | Model Year | 9 = 2009 |
| 11 | Assembly Plant | W = Toledo North Assembly Plant |
| 12 thru 17 | Vehicle Build Sequence | Six digit number assigned by the assembly plant |
VEHICLE IDENTIFICATION NUMBER DECODING CHART