Repair may require replacement of suspension components. Repeat the operation for a total of 3 times. Poor alignment causes uneven wear and can shorten a tire's life by thousands of kilometers. Worn out parts will need to be replaced in order to adjust the camber back to its original manufacturer settings. Switch on the lasers. The D height is obtained by measuring the distance between the edge of the jounce cup along the jounce bumper center line and the jounce pad on the rear axle. Please remember the heads are now the correct way around so the reading will read correctly. Wheel Alignment can be thrown off by: Consequences of camber misalignment: Reasons for camber misalignment: Did you know? THERE ARE THREE FACTORS contributing to proper front-end wheel alignment, and all of them must be in order if your car is to handle safely and if the tires, suspension and steering components are to live to their full maturity. This is not something to neglect, your vehicle will not enhance its performance on its own. Positive caster gives the wheels an inherent tendency to center. With the vast amount of potholes on the road in Massachusetts, your alignment would be thrown off even faster. Before performing any adjustment affecting wheel alignment, perform the following inspections and adjustments in order to ensure correct alignment readings: Inspect the tires for the proper inflation and irregular tire wear. Step by step wheel alignment procedure pdf.fr. For example, all 1982 to 1985 Chevrolet Celebrities should have between 1/16 inch toe-in and 1/16 inch toe-out. )
Before you start measuring, park your car on a flat section of asphalt with at least 10 feet of clearance in front, jack up the front end, and place it on jack stands. We recommend an alignment check with every other oil change. Consequences of caster misalignment: Did you know? One possible cause is wheel and tire imbalance. SPECIFICATIONS WHEEL ALIGNMENT SPECIFICATIONS Use illustration for wheel alignment specifications. Crucial steering and suspension parts might be affected as well. For minimum tire wear and power loss, the wheels of a vehicle should be pointing straight ahead. Determine the caster angle (2). With the car still on the jack stands, follow these steps: 1. Turn plates must be used on all wheels that need adjusting and carrying out the procedure set out in the following picture sequence is the correct format to work to. TRIM HEIGHT TRIM HEIGHT MEASUREMENTS Trim height is a predetermined measurement relating to vehicle ride height. Step by step wheel alignment procedure pdf worksheet. Replacement fasteners must be the correct part number for that application. Move to the front wheels, adjust Castor, adjust Camber and finally front Toe. STEP 4: Read the Toe scales to calculate the rear Toe, remembering that as the heads are reversed the reading will read the opposite way.
We cannot view a misalignment purely by the naked eye. Improper tire inflation. A few factory manuals will express toe as an angle (1985 VW Vanagon toe is 20 minutes in, + /- 30 minutes). The bad news: You can't accurately adjust camber and caster at home with simple tools. Set the tire pressures to the pressure shown on the certification label. 4 Wheel Alignment Explained | Commonwealth Motors. Another possibility is tire lead due to worn or improperly manufactured tires. Repeat the jouncing operation 2 more times for a total of 3 times.
The best solution is to get it checked regularly. The toe will be expressed as a range, usually in inches or millimeters. Inspect the vehicle trim height. Providing all the adjusters are moving freely, a full four wheel measurement and adjustment can be carried out in 15 minutes. When your alignment is off, your tires are not pointing in the same direction. With the aid of your cohort, measure the distance between the lines on the fronts of the tires at points level with the spindles. 8: Trim Height Specifications. Perform the following before measuring the trim heights: 1. For vehicles equipped with a torsion bar suspension turn the bolt (1) that contacts the torsion arm clockwise to raise the and counterclockwise to lower the height adjustment. This is to ensure directional stability. Check the Front End. Step by step wheel alignment procedure pdf full. The fuel tank should be full or the vehicle should have a compensating load added.