Wheel union parameters by a glance

1. Caster defined (Caster):
☆ Caster Definition: ball or pillar on the top of the linkage with the afterward ball (turning the wheel nigh the steering shaft for steering activities ) forward or slant the angle, leaning forward as a negative caster angle, tilted backwards as is Caster.
☆ features: impact on the steering wheel after the steering permanence and steering competence to automatically back positive.
☆ symptoms judge:
(a) caster angle namely too small to cause instability: After cornering the steering wheel automatically back namely the lack of ability: tall speed hair drifting (ashore the expressway while the conveyance should be adequate attention to this ).
(b) caster angle deviation caused by asymmetry: right and left two of the caster angle is not equal 超过 30 '(0.5o) occurs when the vehicle deviation, deviation instruction of the caster angle smaller side.
☆ cases left front wheel caster angle is set to +0.5 o, the right front wheel caster angle is set to +1.5 o, just the car to the left deviation.
☆ Caster adjustment means: (1) gasket (2) abnormal (3) long chasm (4) pillar bar (5) pillars of rotation (6) engine gulf Mobile (7), Eccentric ball
2. Camber (Camber)
☆ camber definition: the tire on the inside of the vehicle by the bias (toward the engine, the negative camber) or outside (off the engine, is camber) angle.
☆ Function: Adjusts the negative efficacy on the vehicle tire centers,Supra Skytop III Shoes, exclude deviation,Supra Skylow Shoes, reduced tire wear.
☆ symptoms to determine: the impact is too much camber:
(1) unilateral lateral tire wear;
(2) accelerated wear of suspension parts;
(3) the vehicle will move toward positive camber side of the larger deviation.
too much negative camber effect:
(1) tire in the side of unilateral wear;
(2) quickened wear of suspension chapters;
(3) the vehicle will shake toward a more negative camber small side of the deviation.
☆ Case:
left camber set to 1.0o, the right front camber is set to 0.5o, vehicles left deviation (left and right wheel camber error of 0.5o, the vehicle appeared deviation).
☆ camber correction means:
(1) gasket (2) eccentric (3) long hole (4) ball rotation (5) pillars of rotation (7) wedge-shaped gasket (6),Supra Pilot Shoes, bearing adjustment (8) eccentric lock (7), Eccentric bushing (10) bias ball

3. Toe angle (Toe)
☆ toe angle of the definition: the front outlook from the vehicle, two axles on the same elevation fathomed left and right tire centerline distance between the vehicle front-end and back-end distance from the feud namely the toe angle. Greater than the distance from the rear end is negative toe, is contrary to toe. Equal to naught before the beam.
☆ function: to depress tire wear and coiling friction.
☆ omens to determine: premier beam is caused by too much:
◆ quick tire wear appearance
(a) of the radial tire, too much camber will be alike to creature formed by the wear patterns.
(b) wear in the form of jagged or blocky.
(c) when the tires by hand from the inside to the outside touch, the internal edge of the tread has sharp feeling.
◆ turn unstable
(a) straight poor
(b) shaking the wheel before the beam reasoned at too many negative
:
◆ rapid tire wear inside
(a) of the meridian child,Supra Footwear, there will be too similar to the formation of negative camber wear patterns.
(b) wear and cut to manner jagged or blocky.
(c) when hand touching the inside of the tires, side, inside brim of the tread sharp consciousness.
◆ turn unstable
(a) straight poor
(b) wheel shaking
☆ front toe adjustment means: tie rod adjustment.
☆ rear toe adjustment means: (1) the original of the regulator (2) eccentric (3) eccentric bolt (4) eccentric bushing (5) long hole (6) gasket 4 steering angle ( Turning Anlgle)
☆ steering angle is defined:
two front wheels when the vehicle turns the relative location of the steering angle can too be known as:
(1) before turning exhibition (Toe Out On Turns)
(2) turning radius (Turning Radius)
☆ function:
(1) to avoid sliding
(2) avoid superfluous tire wear
(3) to dodge turning the tire whistle
( 4) deformation of the parts can be diagnosed before the show
If the steering angle of more than 1.5o, ambition be issued when the vehicle turns a sharp rumpus which may cause deformation of the forearm is bent steering general, the steering angle is no manageable, can merely be corrected by replacing retarded parts. 5 back angle (Setback)
☆ defined than the additional side of the tire meantime the tire back.
☆ back angle causes the formation of:
(1) factory (specially charted , effectively to offset the impact of road humps.)
(2) to make sure the impact
☆ symptoms:
back corner of the wheelbase of the vehicle in fact reflect alterations back to a certain degree angle, the vehicle will deviation occurs. Direction toward the smaller side of the deviation wheelbase. 6 forward angle
☆ Definition: to promote the line and the angle between the centerline of the vehicle geometry.
Advance angle generated reasons:
(1) related with the generation of back angle generated
(2 ) behind the beam angle amenable angle asymmetry
impact:
(1) tire wear
(2) steering wheel offset
(3) deviation
(4) skew the straight body
(5) steering wheel deflection angle amendment
way forward:
(1) of the elemental depot regulator
(2) (among the cycle and tire installation wedge gasket
(3) cam or other after-loading regulator
(4) apt enhance the line embark (Specialty Company produced)
7. kingpin inclination angle of friction radius of the inclusion (SAL · LA · Scrub Radius)
☆ Definition:
◆ SAL: observations from the front of the vehicle, the steering axis and the plumb line into the angle. Kingpin inclination of the vast majority of vehicles are not accommodated for the angle.
◆ inclusive Angle: Kingpin Inclination and camber of the corner and as inclusive
◆ friction radius: observations on the floor airplane, kingpin inclination will be to amplify the line and tire megalopolis line intersection with the ground. the distance between two crossing points cried the radius of friction when the kingpin inclination to extend the line of crossing with the ground inside of the tire centerline, as is the friction radius, otherwise understood as the negative friction radius.
☆ friction radius effect: additional handling stability, ability to automatically back is turned.

kingpin inclination, camber angle and inclusive medley of the three, can be secondhand to diagnose vehicle suspension skeleton system or a characteristic district in which harmed parts


A. Mai Kefu Johnson suspension troubleshooting

Kingpin inclination

camber

inclusive angle

likely problem districts

normal

less than a value

less than a value

half axis bending, and / or, Maike Fu Xun column bent

normal

than the specified value

than the specified value

half axis bending,Supra Vaider Shoes, and / or, Maike Fu Xun column curved.

less than a value

than the specified value

normal

control arm bending or deformation of the column as the upper body by pushing outward,Women's Supra TK Society, or engine bay tangled disorders

than the specified value

less than a value
Normal

change the column as the upper body by pushing inward, or distortion of the engine bay disorders

less than a value

than the specified value

than the specified value

control arm bending or deformation of the column as the upper body by pushing outward, plus: axle bending, and / or pole bending
less than a value

less than a value

less than a value

control arm bent or deformed as the body to the top of the column outside by the push, plus: axle bending, and / or pole bending

B. Short / long arm (A-frame) suspension troubleshooting

Kingpin inclination

camber

inclusive angle

possible mistake zone

normal

less than a value

less than a value

axle bending

less than a value

than the specified value

normal

bent lower control arm or body deformation

than the specified value

less than a value

normal

body upper control arm bending or distortion

less than a value
is greater than the specified value

than the specified value

bent lower control arm or axle bend