- How To Measure Caster In Jeep Jl 6
- How To Measure Caster In Jeep Jl 2
- How To Measure Caster In Jeep Jlo
ProCal SNAP for JL Wrangler and Gladiator truck is the latest addition to AEV’s growing family of electronic calibration modules. This cost effective calibration module will accurately correct your speedometer after installing larger tires (up to 42″ tall) and/or changing the axle/transfer case gear ratio, saving you from the headaches of going to the dealership or depending on a lesser. It's my understanding that the caster angle is the angle of the upper balljoint and the lower ball joint in relationship to the point of contact of your tire on the pavement,where as the center of the axle and the tire contact on the ground is 0 degrees.
- JET LI / 2018 Bright White Jeep JL Wrangler Rubicon Unlimited MOBY DICK / 2007 Stone White JK Rubicon Unlimited CALAMITY JANE / 1974 Jetset Blue Metallic Jeep CJ-5 Renegade RUSTY / 1972 White/Blue Jeep J2000 Pick-Up Truck EMMA / 1969 White Kaiser Jeepster Commando C101 PAPPY / 1954 Yellow Willys CJ3B.
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How To Measure Caster In Jeep Jl 6
After a lift on a Wrangler JK these simple bolts set the caster back where it belongs.
When you lift a Jeep often the lift alters critical suspension measurements that can cause the Jeep to wander, pull, or track strangely down the road. Download wifislax 4.12 iso. Convert wad to iso file. Most suspension companies offer special components to go with the lift that return the Jeep’s suspension back to proper alignment to restore its road manners.
In a JK two main alignment factors are affected by a lift. Thrust angle and castor. Read more on the Thrust Angle
Caster – first to read more on what caster is see this article Toe, Caster, and Camber.
Installation
With the Jeep properly supported on stands or a lift remove the lower control arm bolts only do one at a time to avoid the axle rotating too much.
With the control arm out of the way grind open the bolt hole to create a slot. Most times the bolt will go toward the rear so if you feel that you will get it correct this way you can leave the forward slot alone.
Install the new BDS bolt and cam washer. The cam washer will ride alone the raised metal on the axle mount keeping the adjuster in place. With the bolt toward the rear the caster angle will increase. The bolt located toward the front will decrease the angle. Factory caster angle is 3.7 to 4.7 degrees.
original bolt | grinding the slot |
Repeat the grinding on the other side. With both bolts installed align them to achieve the proper angle and tighten them to the specified torque ratings. Drive the Jeep for a short distance and check the bolts to make sure they haven’t moved or become loose. Periodically check the bolts to be sure they stay where they belong.
slot complete | caster adjusted |
How To Measure Caster In Jeep Jl 2
A qualified shop can check the Jeep for the accurate caster angle and make minor adjustments to the bolts to get things within spec. See Jeep Suspension and Steering Alignment
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If you’ve just installed a brand new lift on your Jeep JL Wrangler and are wanting to get it aligned, there are a couple of things you should know before you take it to a shop and pay to have it done. First, unless you’ve installed new aftermarket components such as an adjustable track bar and/or adjustable control arms, there really isn’t a whole lot a shop can to other than recenter your steering wheel and take your money. Due to the design of the JL steering system, your toe-in will not change at all and being that it comes with a solid front axle, its camber will not change either. Depending on how much lift you install, your caster may be off enough to feel it but again, nothing can be done unless you’ve installed aftermarket components that will allow you to make adjustments. Second, even if you have installed a 2″ lift or taller and added adjustable components, doing a basic front end alignment is easy, something you can do in your own driveway, with the use of some basic tools and this write-up will show you how.
Alignment Topics
Steering Wheel Re-centering
Front Axle Re-centering
Setting Caster
Setting Toe-In
Steering Wheel Re-centering
Front Axle Re-centering
Setting Caster
Setting Toe-In
What You Will Need
• 15,18,21,24mm Socket & Wrench
• Ratchet
• Large Crescent Wrench
• Angle Finder
• Tape Measure
• Carpenters Level
• Floor Jack
• Jack Stands
• 15,18,21,24mm Socket & Wrench
• Ratchet
• Large Crescent Wrench
• Angle Finder
• Tape Measure
• Carpenters Level
• Floor Jack
• Jack Stands
Alignment Definitions
The following are common wheel alignment definitions as defined by Jeep and that you will need to be familiar with:
The following are common wheel alignment definitions as defined by Jeep and that you will need to be familiar with:
CASTER is the forward or rearward tilt of the steering knuckle from vertical. Tilting the top of the knuckle rearward provides positive caster. Tilting the top of the knuckle forward provides negative caster. Caster is a directional stability angle. This angle enables the front wheels to return to a straight ahead position after turns.
How To Measure Caster In Jeep Jlo
CAMBER is the inward or outward tilt of the wheel relative to the center of the vehicle. Tilting the top of the wheel inward provides negative camber. Tilting the top of the wheel outward provides positive camber. Incorrect camber will cause wear on the inside or outside edge of the tire. The angle is not adjustable, damaged component(s) must be replaced to correct the camber angle.
WHEEL TOE POSITION is the difference between the leading inside edges and trailing inside edges of the front tires. Incorrect wheel toe position is the most common cause of unstable steering and uneven tire wear. The wheel toe position is the final front wheel alignment adjustment.
STEERING AXIS INCLINATION ANGLE is measured in degrees and is the angle that the steering knuckles are tilted. The inclination angle has a fixed relationship with the camber angle. It will not change except when a spindle or ball stud is damaged or bent. The angle is not adjustable, damaged component(s) must be replaced to correct the steering axis inclination angle.
THRUST ANGLE is the angle of the rear axle relative to the centerline of the vehicle. Incorrect thrust angle can cause off-center steering and excessive tire wear. This angle is not adjustable, damaged component(s) must be replaced to correct the thrust angle.
Alignment Diagrams
Diagram from Jeep JL Wrangler Factory Service Manual.
Diagram from Jeep JL Wrangler Factory Service Manual.
Disclaimer: Utmost care should be taken when modifying anything to your suspension. Injury to you, your Jeep, and/or others can result from improper suspension modifications or alterations. The author is not a certified mechanic and assumes no responsibility for damage or injury.