RIDING HEIGHT ADJUSTMENT
Note. On vehicles with electronic chassis controls, ensure all systems are functional before adjusting riding height or wheel alignment.
Before adjusting alignment, check riding height. Check riding height with vehicle on level floor and tires properly inflated. Tire inflation specification can be found on door pillar, side wall of tire, sun visor or glove box. Bounce vehicle several times and allow suspension to settle.
Visually inspect vehicle for signs of abnormal height from front to rear or side to side. Remove extra heavy items from passenger and luggage compartments. If riding height is not within specifications, check, repair or replace suspension components. See RIDING HEIGHT SPECIFICATIONS table.
RIDING HEIGHT SPECIFICATIONS
Maximum variation between side-to-side and front-to-rear should not exceed .75" (19 mm). On all other models, maximum variation between side-to-side and front-to-rear should not exceed .47" (12 mm).
| Application | (1) Front "A" In. (mm) | (2) Rear "B" In. (mm) |
|---|---|---|
| Concours, DeVille, Eldorado & Seville | 8.7 (220) | 8.4 (214) |
| (1) Location "A" is measured 22.8" (580 mm) from center of front axle. Dimension "A" is measured from floor to rocker panel. (Scheme 1) (2) Location "B" is measured 22.2" (563 mm) from center of rear axle. Dimension "B" is measured from floor to rocker panel. (Scheme 1) | ||
| (1) | Location "A" is measured 22.8" (580 mm) from center of front axle. Dimension "A" is measured from floor to rocker panel. (Scheme 1) |
| (2) | Location "B" is measured 22.2" (563 mm) from center of rear axle. Dimension "B" is measured from floor to rocker panel. (Scheme 1) |
RIDING HEIGHT SPECIFICATIONS
Scheme 1
FLOOR JACK
When supporting vehicle using floor jack, place support at suspension lift points or frame lift points. Floor jacks may be placed under front crossmember on most models. (Scheme 2)
BUMPER JACK
Bumper jack, if supplied as original equipment with vehicle, should only be used to change a flat tire. If vehicle is not supplied with a bumper jack, DO NOT lift vehicle by the bumper at any time.
AXLE CONTACT HOIST
Note. Always follow hoist manufacturer's instructions. DO NOT allow hoist or adapters to contact suspension, exhaust or steering components. Frame contact must be made. Use adapters if necessary.
Hoist should contact lower control arms, or front crossmember and rear axle.
FRAME CONTACT HOIST
Hoist adapters must contact vehicle in specified areas. (Scheme 2) Adapters must be positioned to distribute load and support vehicle in a stable manner. DO NOT allow lift pads to contact exhaust system components.
| WARNING | If removing rear axle, fuel tank, spare tire or liftgate using single-post hoist, anchor vehicle to hoist. Place jack stands under vehicle, or add weight on rear end of vehicle to prevent tipping when center of gravity changes. |
Scheme 2
ORDER OF ALIGNMENT
Note. To ensure accurate alignment, align wheels in the following order: 1) rear camber; 2) rear toe-in; 3) front caster; 4) front camber; 5) front toe-in.
CAMBER ADJUSTMENT (REAR)
Loosen bolts securing front and rear ends of lower control arm to frame. (Scheme 3) Move lower control arm inward or outward as necessary to adjust camber. Tighten bolts to specification. See TORQUE SPECIFICATIONS.
Scheme 3
TOE-IN ADJUSTMENT (REAR)
Loosen toe link bolt. (Scheme 4) Move wheel inward or outward as necessary until toe-in is as specified. See ALIGNMENT SPECIFICATIONS. Tighten bolts to specification. See TORQUE SPECIFICATIONS.
Scheme 4
CASTER ADJUSTMENT
Support vehicle by its wheels (suspension loaded). Remove nuts and washers from front strut mounting tower. Move top of strut forward and/or rearward as necessary to adjust caster. See ALIGNMENT SPECIFICATIONS . Tighten nuts to specification. See TORQUE SPECIFICATIONS.
CAMBER ADJUSTMENT (FRONT)
Loosen nuts on bolts securing strut to steering knuckle. Tighten or loosen camber adjusting bolt as necessary to adjust camber to specification. See ALIGNMENT SPECIFICATIONS . While holding wheel in position, tighten nuts to specification. See TORQUE SPECIFICATIONS .
TOE-IN ADJUSTMENT (FRONT)
Loosen tie rod end lock nut. (Scheme 5) Loosen clamp securing dust boot to inner tie rod. Rotate inner tie rod until toe-in is as specified. See ALIGNMENT SPECIFICATIONS. Tighten lock nut to specification. See TORQUE SPECIFICATIONS. Ensure steering gear dust boot is straight after adjustment. Tighten dust boot clamp.
Scheme 5
TORQUE SPECIFICATIONS
| Application | Ft. Lbs. (N.m) |
|---|---|
| Rear Toe Link Bolt | 66 (90) |
| Strut-To-Steering Knuckle Nut | 136 (184) |
| Strut-To-Strut Tower Nut | 18 (24) |
| Tie Rod End Lock Nut | 46 (63) |
TORQUE SPECIFICATIONS
| Application | Preferred | Range | |
|---|---|---|---|
| Camber (1) | |||
| Front | 0 | 0.5 To 0.5 | |
| Rear | 0.3 | 0.8 To 0.2 | |
| Caster (1) | 2.3 | 1.3 To 3.3 | |
| Toe-In (1) | |||
| Front | 0.2 | 0 To 0.4 | |
| Rear | 0.2 | 0 To 0.4 | |
| Toe-In (2) | |||
| Front | 0.1 (2.5) | 0 To 0.2 (0 To 5.0) | |
| Rear | 0.1 (2.5) | 0 To 0.2 (0 To 5.0) | |
| (1) Measurement is in degrees. (2) Measurement is in inches (mm). | |||
| (1) | Measurement is in degrees. |
| (2) | Measurement is in inches (mm). |
WHEEL ALIGNMENT SPECIFICATIONS
See also:
• RIDING HEIGHT SPECIFICATIONS
• TORQUE SPECIFICATIONS