CURB HEIGHT MEASUREMENT (LD)
The wheet alignment is to be checked and all alignment adjustments made with the vehicle at its required curb
height specification.
Vehicle height is to be checked with the vehicle on a flat, level surface, preferably a vehicle alignment rack. The
tires are to be inflated to the recommended pressure. All tires are to be the same size as standard equipment.
Vehicle height is checked with the fuel tank full of fuel, and no passenger or luggage compartment load.
Inspect the vehicle for bent or weak suspension components. Compare the parts tag on the suspect coil spring(s)
to the parts book and the vehicle sales code, checking for a match. Once removed from the vehicle, compare the
coil spring height to a correct new or known good coil spring. The heights should vary if the suspect spring is weak.
1. Front - On each side of the vehicle, measure the
distance from the center of the rear lower control
arm bolt (1) to the ground (2) Record the measurement.
Next measure the distance from the
spindle center (3) to the ground (4) Record the
measurement.
2. Take the two measurements and subract them to
get the curb height specification.
3. Rear 4X2 LD - On each side of the vehicle, measure
the distance at the axle tube (1) to the jounce
bumper flange (2).
4. Rear 4X4 LD - On each side of the vehicle, measure
the distance at the jounce pad welded to the
axle tube (1) to the jounce bumper flange (2).
5. Compare the measurements to the specifications listed in the following Curb Height Specifications chart.
CURB HEIGHT MEASUREMENT (HD)
The wheel alignment is to be checked and all alignment adjustments made with the vehicle at its required curb
height specification.
Vehicle height is to be checked with the vehicle on a flat, level surface, preferably a vehicle alignment rack. The
tires are to be inflated to the recommended pressure. All tires are to be the same size as standard equipment.
Vehicle height is checked with the fuel tank full of fuel, and no passenger or luggage compartment load.
Inspect the vehicle for bent or weak suspension components. Compare the parts tag on the suspect coil spring(s)
to the parts book and the vehicle sales code, checking for a match. Once removed from the vehicle, compare the
coil spring height to a correct new or known good coil spring. The heights should vary if the suspect spring is weak.
1. Front 4X2 On each side of the vehicle, measure
the distance from the top of the jounce bumper
flange (2) to the bottom of the frame rail (1).
2. Front 4X4 On each side of the vehicle, measure
the distance from the top of the axle (2) to the bottom
of the jounce bumper flange (1).
3. Rear ALL - On each side of the vehicle, measure
the distance at the top of the axle tube (2) to the
bottom of the frame rail (1).
4. Compare the measurements to the specifications listed in the following Curb Height Specifications chart.
