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- ALIGNING A SOLID AXLE
TRUCK -
STEP 1-
CHECK TO MAKE SURE NONE OF THE MAJOR STEERING COMPONENTS ARE WORN. BALL
JOINTS CAN CAUSE SOME OF THE
BIGGEST
PROBLEMS SO MAKE SURE THEY ARE IN GOOD SHAPE.
STEP 2-
GRAB A TAPE
MEASURE, TWO MARKERS(LOOSE CHANGE), AND FIND A FLAT SURFACE WHERE YOU
CAN PARK AND WALK ABOUT 40
FEET
OUT IN FRONT OF THE TRUCK.
STEP 2a - INITIAL
ALIGNMENT..... IF AXLE IS TRACKBAR EQUIPPED AND CENTER, OR TRUCK
IS DRIVABLE SKIP TO STEP
3.
FOR A TRACKBAR TRUCK MEASURE FROM LIKE POINTS ON THE FRAME, AND MAKE
SURE THE AXLE IS CENTER SIDE-TO-SIDE. YOUR EYES ARE
VERY GOOD AT SPOTTING ISSUES IN THIS AREA, SO IF YOU LOOK CLOSELY AT
EACH SIDE OF THE TRUCK AND PICK SOME REFERENCE POINTS,
YOU CAN EYEBALL-CHECK TO USUALLY WITHIN AN ACCEPTABLE 1/8"-1/4". DO
THIS IF YOU LIKE AS I DO ALL THE TIME...
IF YOUR TRUCK HAS NEW STEERING COMPONENTS BEING INSTALLED, IT IS MOST
IMPORTANT TO GET THE TOE TO A DRIVABLE STATE. MEASURE
BETWEEN THE FRONT OF THE TIRES, DO THE SAME WITH THE REAR OF THE FRONT
TIRES, AND ADJUST THE STEERING COMPONENTS SO THAT
THE MEASUREMENTS ARE WITHIN 1/8". THIS WILL MAKE THE TRUCK DRIVABLE.
STEP 3 - GRAB
THE SAME
TOOLS YOU USE TO ADJUST THE COMPONENTS, AND PARK THE TRUCK ON A FLAT
SURFACE WHERE YOU CAN
WALK
OUT IN FRONT OF THE TRUCK ABOUT 40 FEET. JUST A GOOD WAYS OUT IS
FINE. WITH THE ENGINE STILL RUNNING WIGGLE THE STEERING
WHEEL BACK AND FORTH, IN SMALLER AND SMALLER "WIGGLES" STARTING FROM
ABOUT 1/4 TURN, TILL YOU ARE NOT
REALLY MOVING THE WHEEL ANYMORE. THIS WILL LEAVE THE TIRES IN A
NEUTRAL STATE.
STEP 4 -
WALK OUT
IN FRONT OF THE TRUCK AND SIGHT DOWN THE SIDEWALL OF ONE FRONT TIRES.
CROUCH DOWN, LOOK VERY
CLOSE
DOWN THE SIDEWALL, AND DROP A QUARTER(ROCK OR WHATEVER) AS CLOSE TO THE
IMAGINARY LINE AS POSSIBLE. SIDESTEP OVER
TO THE OPPOSITE FRONT TIRE(TRY TO STEP STRAIGHT TO THE SIDE) AND
DO THE SAME THING. MEASURE BETWEEN THE MARKS
AND REMEMBER THIS NUMBER. LETS SAY IT'S 80 INCHES....
STEP 5 -
WALK BACK
TO THE TRUCK AND MEASURE THE DISTANCE FROM OUTSIDE OF SIDEWALL, TO
OUTSIDE OF OPPOSITE SIDE
SIDEWALL.
FOR ZERO TOE THIS NUMBER SHOULD BE 80 INCHES, OR THE SAME AS YOUR FIRST
NUMBER. BEING 40 FEET OR MORE IN FRONT OF YOUR
TRUCK, IF YOU ARE 2 INCHES OFF, YOUR TOE IS WITHIN .060" OF AN INCH AT
THE TIRE. FROM MY EXPERIENCE MOST ALIGNMENT SHOPS
WOULD HAVE A HARD TIME GETTING THAT PRECISE. FOR MORE ACCURACY HANG A
WASHER FROM A STRING, BY EYE HOLD THE
STRING UP TO THE SIDEWALL SIGHT LINE, AND
WHEREVER THE WASHER TOUCHES
THE GROUND IS WHERE YOU PUT THE MARK. MAKE
ADJUSTMENTS IN THE TIE ROD TO GET THE NUMBERS WITHIN A COUPLE INCHES. I
SET ALL MY SOLID FRONT AXLE TRUCKS TO ZERO TOE,
BUT MAKE THE THE MEASUREMENTS BETWEEN MARKS IS ABOUT 3-4 INCHES SHORTER
IF YOU WANT A BIT OF TOE. START THE TRUCK
AND WIGGLE THE WHEEL TO RE CENTER AFTER EVERY ADJUSTMENT. IF YOU
CAN CONFIDENTLY GET THE MEASUREMENTS
WITHIN AN INCH YOU ARE DOING GREAT.
STEP 6 -
DRAGLINK ADJUSTMENT
- TO GET THE STEERING WHEEL STRAIGHT, DRIVE DOWN THE ROAD
AND NOTE WHERE
THE
STEERING WHEEL IS COCKED WHEN THE TRUCK IS GOING STRAIGHT DOWN THE
ROAD. PARK THE TRUCK AND LEAVE THE STEERING
WHEEL IN THIS SAME POSITION. LEAVE THE KEY IN THE ON POSITION SO THE
WHEEL IS FREE, CRAWL UNDER THE TRUCK, AND MOVE THE
DRAGLINK LENGTH ADJUSTERS SO THE WHEEL TURNS TO HAVING ITSELF BE
CENTER. YOU'LL MOST LIKELY BE PLAYING WITH
GETTING THE WHEEL PERFECTLY STRAIGHT FOR A FEW DAYS, BUT THIS IS NORMAL
AND SHOULD BE THE VERY LAST STEP WHEN
MESSING WITH FRONT END COMPONENTS.
IF YOU GET GOOD, THIS TOE TECHNIQUE CAN BE USED ON A-ARM VEHICLES TOO.
I'LL GO INTO DETAIL ABOUT CASTER AND OTHER ISSUES SOON....
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