KTDP007-1 - 007-12 Square gasket | LYKT Four Wheel Alignment Conceptions

Product specification

Product package

There are 10 pieces per pack and 12 pieces per pack; among them, 10 pieces are packed in single degree and 12 pieces are packed in set.

Installation instruction

Estimated installation time: about half an hour on each side.

Step 1：The measured values of the external inclination or beam angle shown by the locator are compared with the standard value (vehicle gauge) specified in the original factory value, to determine the correction of the outbound inclination or beam angle.

Computational formula: positive quantity = original factory value - measured value.

Note: calculation is done algebraically. It is recommended to set the angle unit of the positioner as expressed in centigrade, otherwise the unit conversion shall be carried out.

Step 2 Installation:

1. Check the chassis parts and tires as required by the four-wheel positioning procedure. If there are any type of adjusting gaskets in the rear axle, the gaskets should be removed and installed before measurement.

2. According to the measurement result, calculate the angle adjustment of the rear wheeland select equal or close gasket.

3. Remove the wheels and brake system of the vehicle all the way to the base of the rear axle.

4. Clean the surface in contact with the gasket, otherwise it will cause inaccurate angle adjustment.

5. There is a mark indicating the number of angles on the gasket. This mark indicates the directivity of the change of the camber angle or beam angle to be corrected.

6. Installation of vertical ground direction, it can change the camber angle.

-Angle mark upward - increase camber angle

-Angle mark down - reduce camber angle

7. Installation of horizontal ground direction, it can change the beam angle.

-Angle mark backward - increases the front beam angle

-Angle mark forward - reduce the front beam angle

If it is necessary to change the camber angle and beam angle at the same time, the two gaskets can be superimposed vertically, but this method is generally not recommended.

Put the wheel back, according to the technical requirements of the manufacturer, tighten the bolts with a torque wrench or other torque tools before installing the wheels, which will cause

inaccurate Angle adjustment.

Attention

1. The measuring unit on the four-wheel positioning instrument is recommended to change to the centigrade unit.

2. Before installing the gaskets, first, check the relevant parts of the vehicle chassis and check whether there is any slack. If there is any slack, replace it before installing the gaskets.

3. Maximum of two gaskets can be added to each wheel, but not more than 2 degrees.

4. The fastening strength of the bolt is preferably 6-7.5 kg. When tightening the bolts, tighten the thin side of the gasket first, then tighten the thick side and set the diagonal apart four times for solidity.

Setback

It refers to the angle between the line connecting the two front wheels (or the rear wheel) to the ground contact point and the line perpendicular to the thrust line. The angle value is positive when the right wheel

is in front of the left wheel, and the angle value is negative when the right wheel is in rear of the left wheel.

Causes:

(1)collision

(2)parts wear.

Under normal circumstances, the setback within 0.5" is no problem.

Included Angle

The sum of the kingpin inclination angle and the wheel camber angle is called the included angle.

Turning Angle

The angle at which the front wheels turn when the car is turning (the steering angles of the left and right wheels are different).

(1)Prevent the tire from slipping.

(2) Reduce tire wear.

(3) Reduce the sound when the car is turning.

Thrust Angle

The angle at which the front wheels turn when the car is turning (the steering angles of the left and right wheels are different).

(1)Prevent the tire from slipping.

(2) Reduce tire wear.

(3) Reduce the sound when the car is turning.

Steering Axis Inclination

Viewed from the front of the vehicle, the knuckle kingpin axis or the imaginary kingpin axis is inclined inward in the transverse plane; the angle formed with the plumb line is called the Steering Axis Inclination.

Function: Automatically correcting, steering is light and easy.

Caster

The included angle formed with plumb line as the steering knuckle kingpin axis or hypothetical kingpin

axis tilts backward within longitudinal plane is known as kingpin caster angle, it affects the vehicle driving stability and automatic returning capability. Kingpin positive caster angle: when observing from side of the vehicle, kingpin axis tilts backward within longitudinal plane.

Kingpin negative caster angle: when observing from side of the vehicle, kingpin axis tilts forward within longitudinal plane.

Symptom:

(1)After making a turn, automatic returning capability is insufficient;

(2)Vehicle is unstable under high-speed driving.

Consequence: vehicle deviates off track.

Example: the kingpin positive caster angle of left front wheel is set as 0.3°, that of right front wheel is set as 0.8-0.3°, in such case, the vehicle would deviate toward left.

Toe

Look down at the angle between the center plane of the wheel and the longitudinal center plane of the vehicle from the right above of the vehicle.

Positive toe angle: The front end of the wheel is closer to the longitudinal centerline of the vehicle than the rear end (pigeon-toed).

Negative toe angle: the front end of the wheel is farther from the longitudinal centerline of the vehicle than the rear end (toe out).

Use cases:

(1) In a smooth field, using a small amount of front wheel front toe angles, it can keep the car stable during acceleration. But it will reduce the steering reaction of the car when entering the curve, at the same time it will increase the steering reaction when accelerating the exit of curve.

(2) Use a negative toe angle to get more steering when entering a corner, however, it will make the car unstable when it accelerates or going through the undulating road, and it will deviate.

(3)When driving on a flat road, it is recommended to use a negative toe angle of 0 to 1 degree.

(4)Positive toe angle or negative toe angle can be used with Ackerman. Use a certain amount of negative toe with a smaller Ackerman effect, increase the response to the steering front section (starting into the curve) and reduce the reaction to the steering rear section (in the curve); Use a certain amount of positive toe angles with a larger Ackerman effect, to reduce the reaction to the steering front section and increase the reaction in

the steering rear section.

Camber

The angle between the center plane of the wheel and the vertical line is called the camber angle, that is, the angle between the geometric centerline of the wheel and the vertical line of the ground in the transverse plane of the car. To ensure that the load is applied to the center of the tire while the vehicle is under load, eliminate deviation and reduce tire wear.

Negative wheel camber angle: the wheel top edge is tilted inward, close to the engine.

Positive wheel camber angle: the wheel top edge is tilted outwards away from the engine.

Excessive positive wheel camber angle will cause:

(1)Wear the outer side of the tire

(2) increase the wear of the suspension component additionally

(3) cause the deviation.

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