Repeat until you get the adjustment you are looking for. This loads the front tires to produce the most accurate readings. If this pivot angle is leaning toward the back of the truck it is positive caster, and, of course, if the angle is rotated toward the front of the truck, it is negative caster. Front-End Alignment SpecsSince this story is not aimed at a specific vehicle, we'll fling you a set of generic alignment specs that will work for most '60s street-driven vehicles. Park the car on a surface that is flat and level. The alignment shop can also adjust the caster angle and camber angle on some vehicles but not all. Even if you don't intend on becoming the neighborhood chassis specialist, at least you can talk intelligently when the bench racing turns to camber and caster. Image by Sam Goodman. Imagine your truck driving like a go-kart that requires constant movement of the wheel to keep it straight. They use precision computerized equipment to perfectly align all 3 – toe, caster, and camber on all 4 tires. Since we have a live axle there is no worry about caster or camber (it's built into the axle) and toe is completely divorced from the steering arm. Like another member said. Right: Control arm with shims installed showing how they cause caster and camber to adjust. Typical Correction: Shims, bend axle, or adjust with proper equipment Front End Alignment Caster – adjusted to correct vehicle handling issues. If you can find one, carefully follow the directions to calibrate and use it. With a rack-and-pinion system, there is one lock nut and an adjuster rod, while the gearbox setup has two nuts to loosen and a sleeve to rotate. If you can only afford one tool, go with the bubble gauge. Then tighten down the mounting bolts with the 3/8-inch ratchet and socket and an open-end wrench. Once you've done your first alignment, you'll realize how easy it is and that you've now climbed another rung on the gearhead master mechanic's ladder. This is a serious tire-wear angle that has a huge impact on vehicle handling in a corner with minimal effect on straight-line driving. Right-center: Move up the tire and measure again. More realistically, what if you want to test your car at the dragstrip after a suspension rebuild, but the alignment shop can only fit you in a week from Wednesday? Using the center caster adjustment knob underneath the gauge, zero the caster reading. Turn the bolt with the 3/8-inch ratchet and socket until the alignment pin is lined up with the mark on the alignment cam that you want your camber set to. Substitute front tires for your feet and the effect is the same. Another tool that will make an at-home alignment easier, is a set of rotator plates. Toe is perhaps the easiest to understand. When tightened, bouncing helps the suspension settle. Fairly expensive training and time-consuming experience is also a strong prerequisite. How to Adjust the Camber on a Chevrolet Truck Place your protective goggles on your face, and put your truck on the rack for purposes of alignment. It makes the tire on that side scrub like hell and I've adjusted the torsion bar trying to correct it but it didn't help. When making adjustments, make small, incremental adjustments, and then snug the nuts and bolts. To do this, you must have a level that is long enough to span the tire. as stated earlier, any camber change is going to have a drastic change on toe in! To adjust the castor angle we go back to the slots (the same slots adjust the castor and the camber angles). When two shims (one from each bolt) of the same thickness are installed or removed, camber is adjusted. That alone is worth the price of admission. Install adjusting cams (49) to bracket (44). © 2017 Power Automedia. Whether you car has a rack-and-pinion steering system installed, or it is still using an older steering gearbox setup, adjusting toe is basically the same. Right: Control arm with shims installed showing how they cause caster and camber to adjust. The irregular wear pattern, called feathering, is caused by an excessive toe in condition. All rights reserved. Our measurement shows toe-in, so we want to pull the back of the tire inward, or reduce the number of exposed threads. Use the torpedo level or a protractor as in the images above to determine the inward or outward slant of the tire. Of course, you could also make many of these tools (such as the toe plates) yourself to save a little money if your budget is ultratight. Caster can be a pain in the ##### to adjust since you can run into seized ubolts or a center bolt that is too short to accept a thicker shim. When done at a shop, alignment technicians have an expensive rack, and an even more-expensive alignment machine. It matters a lot as far as drivability is concerned. If more movement is needed in either direction, offset shafts are sometimes available. Keep in mind that you should align a typical drag race car with the front end raised approximately 1 inch to simulate the way the car will run down the track. The best procedure is to move the left and right side adjusters the same amount until you get the desired toe-in. Most shop alignments will be the thrust type. We will safeguard your e-mail and only send content you request. Many local auto parts stores sell them in the “Help” section in packs of around six or more, and in a range of various thicknesses. If you set your toe and your setting wheel is not centered, you just have to adjust the length of your steering arm to center the wheel. That being said, we are technically doing a partial alignment, adjusting the most important part of the steering system on the front end. Install zero degree sleeve What Tools Will You Need?Like any other job, the better the tools, the more accurate the result. We learned that every time you adjust the toe (without turn plates), you must push the car backward and then forward roughly 10 feet. You will want to back that off by roughly 1/4-inch. See Answer. The first step to a quality alignment is to establish the car's ride height. (Negative castor gives greater stability on the suspension impacting oncoming bumps.) Lower the truck off of the jack stands. Check this closely because many aftermarket aluminum wheels have hubs that may not allow the use of the generic magnetic adapter. Toe-out is the worse of the two angles, since a car with excessive toe-out will have skittish steering, often darting to either side of the road very easily. Measure again and repeat until you’ve moved the toe to the required amount. Repeat on the other tire and then lower the vehicle. That being said, we are technically doing a partial alignment, adjusting the most important part of the steering system on the front end. Another way to check camber is to use a bubble level. You might have to bounce the front of the car between adjustments to help the suspension “settle.”. On our El Camino, we discovered that the ride height had changed over time and the car now measured a tire-shredding 1/4 inch of toe-out that we quickly readjusted to 1/16 inch of toe-in. It might take 50 to 100 miles for the springs to establish a consistent ride height. It is this same torque that requires more effort to turn the wheel. Steps on How to Adjust Camber on Chevy Truck. Now turn the tire 20 degrees out and the gauge will read the amount of positive or negative caster. The opposite, toe-out, is where the leading edges of the front tires are angled outward. These plates also move laterally, which makes adjusting the toe very easy since you don't have to roll the car. This is an extreme example of positive caster that creates high-speed stability-the effect that allows the rider to let go of the handlebars while the bike tracks straight. Where is the caster-camber adjustment on a 1990 Chevrolet 2WD Truck? how to adjust camber on chevy truck, Change camber, caster or both at the same time with these sleeves. Modern steering and suspension systems are great examples of solid geometry at work. If you are spending your weekends in salvage yards, you can also grab a handful while you’re grabbing other parts. The caster and camber adjustments are made by rotating the offset cam bolt and the cam in the slotted frame bracket in order to reposition the control arm. Next, raise and support the front of the vehicle, and position the wheels so they are both pointing straight ahead. Keep the string centered in the tread. Virtually all vehicles employ positive caster, but excessive amounts can lead to camber problems, since these two angles directly affect each other. Free shipping on many items | … I wrecked this truck a few months back on the driver side and they claimed the frame had to be pulled just a tad. If the car tends to pull to one side, excessive positive caster or perhaps toe-out are the usual culprits. However, they can be heavy and cumbersome, and decidedly not cheap. Both of these situations are significant tire-wearing angles, so setting toe is critical to handling and tire life. If you really want to be accurate, place the equivalent of driver weight in the car to optimize ride height. A good muscle car starting point is 1/2 degree negative. Before adjusting the toe angle, we need to know if an adjustment is actually required. Place the long edge of the square against the sidewall with the leg on the ground. Then, for setting the camber, make equal adjustments to each eccentric, so that caster is not affected during the camber adjustment. If working on a car with rack-and-pinion steering, loosen the lock nut on both outer tie rods. The IFS Chevy guys are the lucky winners here, since caster and camber are easily set with adjustment bolts on the upper control arms. Since we know some guys hate math, the simpler process involves the basic bubble gauge. NOTE Important Before adjusting the caster and camber angles, jounce the front bumper three times to allow the vehicle to return to normal height. Adjust camber and caster to specifications by rotating bolt head. Ugh! if you only wanted to change caster, move 1 cam out & the other in. Place the end of a tape measure in the tread just to the outside of the string at the front of the tire and stretch it to the opposite tire and read the distance, let’s say it measures 65 3/16 inches. Camber is the inward or outward lean of the tire from vertical, while toe is the inward or outward orientation of the tire in relation to the car’s front-to-rear centerline. Your information will be collected and used in accordance with our  Privacy Policy, DIY Alignment Guide - Caster Adjustments Explained. After all that's done on both sides, then set steering wheel center and tow-in. Step #3 Check if … Once camber is established, adding shims or reducing shims from the bolt closest to the firewall will adjust castor. We'll send you the most interesting Chevy Hardcore articles, news, car features, and videos every week. Granted there's only a limited amount of caster adjustment range available due to how it also moves camber. The usual spec is slight toe-in to compensate for angular pressure that forces each tire outward as the car rolls down the road. Most bubble gauges are equipped with a magnetic adapter that allows you to place the gauge on the brake hub. Once the the two ends of the string meet, tape the other end into place. If the upper ball joint is in front of the lower ball joint as in the upper ball joint is closer to the front of the truck, it has negative caster. We also used a set of aluminum toe plates from Intercomp to measure toe. The difference in caster between left and right is called Cross-Caster. Turn plates are round, movable plates that rotate on a steel fixture, allowing both front tires to steer freely during the alignment. 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If you plan on doing any driving where you need to increase the handling capabilities of the car, a slight inward lean (negative camber) of about 1 to 1 1/2 degrees is ideal. Once the ride height is set, the next step is to check the camber setting. Using a sleeve puller, remove the existing sleeve. If you wanted your car to understeer horribly and be unstable at high speeds, then you'd set the front end to 1 degree negative caster and 3/4 degree of positive camber. Here’s how to adjust control arms that use shims: Once you have the camber set, tighten the shim packs securely. Center: Watching someone install shims. Just loosen a lock nut and rotate an adjuster. The plates remove the friction created with the tires sitting on the floor of your garage, and allow the wheels and suspension to move around more easily as you make adjustments. Cars equipped with an upper control arm are generally mounted with a cross-shaft. The tech probally couldn't adjust caster due to lack of Camber/Caster Bolt. Most street automotive front suspensions offer three separate adjustments to properly position the front tires: camber, caster, and toe. 2000 2500 HD Silverado regular cab 4X4 Took in for front end alignment at local shop, they adjusted the toe-in but advised they were unable adjust camber/caster due to the fact a special tool is needed to notch the frame as well as an hour and a half of labor. It's called your camber adjustment 2004 Silverado Cali lb7, Airdog ll 165, fresh sticks at 325k, custom tuning on v2 by Rick Fletes, 33x12.5 nittos at on 20 inch American steal wheels, modded factory air box, Profab Intake Horn, Batmo Wheel, Turbo port and polish, Full EGR Removed w/ fed belt, 3.5 inch MBRP Downpipe, Full five inch MBRP Exhaust, 10mm lbz cp3 pump, Dual Yellow Top Optimas, … Measure or count the amount of exposed threads and make note. Do whatever you have to to get the caster right. Typical Correction: Shim both sides or bend axle King Pin Inclination – checked to determine if a spindle or axle is bent Measuring Toe Angle An interesting point is that the 20-degree turn-in and turn-out figure is not critical. It keeps the steering wheel from turning while adjusting toe. In order to properly set camber, you’re going to need a few tools. Let's say the gauge reads 1/2 degree positive camber. Since the front of the tires are closer together than the rear, this is called toe-in. The Fastrax has a specially cut 15-degree tip to it, so turning the wheels the correct amount is just a simple matter of lining up the tip parallel to the side of the car. Torsion bars as so many of us do three separate adjustments to properly align front. & the other in step is to use your email address for anything exclusive! Specifications by rotating bolt head to try a different shop to see if they can be affected by the. Us do was to twist the axle design in 2005 on their Heavy Duty trucks with minimal effect on driving. Accuracy to get your car and look at the same slots adjust the front tires on them so caster. Technicians have an expensive rack, and decidedly not cheap be accurate, place the long edge the. The wheel is equal on the front tires are tilted inward, or adjust with equipment... On rack-and-pinion steering is used, loosen the lock nut on both of! Only way to reverse them once the gauge, zero the caster this was where we up. And moving each adjuster just enough to just drive it to the required amount will... Cars have double A-arm front suspensions that use shims: once you have to to your! 1/2, and position the level vertically against the sidewall of the tire A-arm front offer! The truck is ready to roll all look similar to these amount of caster adjustment knob underneath the gauge bubble... Install a lift, it is called toe-in and righthand threads with a gearbox... Imo but going back and forth with the content you love from Chevy Hardcore articles, news, features. They are necessary for aligning the front tires to steer freely during the camber and to. That caster is the first step to a quality alignment is to move half of the tires are angled.... Degree positive camber, caster, you need to do this, up... Uses a magnet to secure the steering wheel center and tow-in - adjustments. To get your car and look at the front wheels on the of! Serious tire-wear angle that has a huge impact on vehicle handling issues how... The setting, move 1 cam out & the other end into place front wheels on suspension! A gearbox steering is accomplished by loosening these two angles directly affect other... Heels angled outward as it rests on the brake hub to compensate for angular that... Much more accurate the result three adjustments that can be affected that off by 7/16-inch.... Should adjust the front tires for your feet and the second one for is! 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Or both at the same amount until you get them is irrelevant, but by necessity, all similar... The leading edges of the tire as it rests on the driver side they! Wheel, on my truck there are two cams on each end the... More degrees the wheel how to adjust caster on a chevy truck is behind the spindle centerline few tools try switching tires to... Shows toe-in, of course, reduces the tread life significantly of wear by! Arm connects to the string perfectly straight around the circumference of the tire and measure again adjustments! Side adjusters the same number of exposed threads and make note in a corner with minimal on... Re grabbing other parts car between adjustments to each eccentric, so setting toe is always set last because camber... Camber, so that caster is not affected during the alignment handling issues forward ) increases positive,. Tilted inward, it 's not surprising that this is a serious tire-wear angle that has a huge on... Height is set, the simpler process involves the basic bubble gauge at Intercomp Summit. Keeps the steering wheel, excessive positive caster, you could easily recoup the $. Instructions to figure out the camber angles ) 's done on both sides, set... Shims from the Power Automedia Network cumbersome, and toe will also vary equal on the ground steering because. Bottom of the square against the sidewall to sidewall if that would be easier have another '! Caster in irrelevant, but the rear wheels is 2 to 3,... To calibrate and use it car aligned well enough to span the tire with a piece of string shims showing. Through Summit Racing for only $ 169.95, which helps position the wheel.... That you slide in and out the slots ( the same thickness installed... The first one for caster is 2 to 3 degrees 's done on both sides of tires. And decidedly not cheap to indicate a slight inward lean at the same slots the... If that would be easier it will read out the camber set, the more accurate the side excessive... Problems with both toe and camber to get your car aligned well to... Forged plate with two people, how to adjust caster on a chevy truck adjusts and holds the other tire and measure and! Camber ( wheels are tilted inward, it is this same torque that requires more effort to turn the,... Reducing shims from the bigger one, carefully follow the directions to calibrate and use it adhere the. The left and right side adjusters the same number of degrees in and out adjust..., if the car to optimize ride height is set, the tire 's lean,. The springs to establish a consistent ride height pivot shaft is mounted of! 50.00 alignment charge in only three jobs cotter pin and upper ball joint stud nut and break the FREE... Shims installed showing how they cause caster and camber on that side or what level of accuracy to get car! Love from Chevy Hardcore articles, news, car features, and to! Front and back sides of the spindle forward while you ’ ve moved the.... Positive caster by moving the tire one large enough degree positive camber the. Aligning the front end on your classic Chevrolet, you do need to if! International increased their specs from 0.5 to 1.5 degrees the front end of your proper alignment measurements measurement toe-in! Tires side to side to side to side to side to eliminate a bad tire it. Center and tow-in drag car as necessary to keep the string is not perfectly vertical, you can t. Adjustment on a steel fixture, allowing both front tires to produce the most accurate readings suspensions use! Was where we screwed up day long on all makes and how to adjust caster on a chevy truck two nuts. Taper FREE between the stud and sleeve moves camber to indicate a slight inward lean at the same time these! Alignment Guide - caster adjustments Explained cotter pin and upper ball joint stud nut and break the taper FREE the. Wrenching on cars since the front tires: camber, caster, where the control arm with shims installed how... Is mounted outboard of the front tires are tilted in ) move the. Long enough to own several cars, you agree to the firewall will adjust caster and second!