Q. Coil Spring Preload Adjustment - ACR Suspension

NOTE:
The following procedure is only required on vehicles that have incorrect design height as determined by Section "0 - Setting the Vehicle Design Height."





1. Remove the front and/or rear shock absorber assemblies from the vehicle (Figure 68).

2. Securely hold the shock absorber in a vise by clamping the lower bushing or clevis.

CAUTION:
Do not clamp the shock absorber in a vise that is not equipped with protective caps on the vise jaws. Failure to use protective caps will result in damage to the bushing and clevis of the shock absorber.





3. Using two adjustable pin spanner wrenches (Snap-on P/N APS357B, OTC P/N JHW-O-472 or equivalent), one on the lower spring seat and the other on the lock nut below it, loosen and back off the lock nut (Figures 68 and 69).

4. Using one of the adjustable pin spanner wrenches, rotate the lower spring seat in the direction needed.

NOTE:
If the vehicle was lower than curb height specification, rotate the spring seat upward. If the vehicle was higher than curb height specification, rotate the spring seat downward.

5. Once preferred spring height is achieved, thread the lock nut up against the bottom of the lower spring seat.

6. Place an adjustable pin spanner wrench on the lower spring seat to hold it in place, then tighten the lock nut up against the lower spring seat.

7. Remove the shock absorber/coil spring assembly from the vise.

8. Repeat steps 2 through 7 for the other shock absorber/coil spring as necessary.

9. Install front and/or rear shock absorber/coil spring assemblies onto the vehicle.

CAUTION:
When installing shock absorber/coil spring assemblies, the vehicle must be at design height before tightening the upper and lower mounting bolts to specifications.

10. Continue with Section "0 - Setting the Vehicle Design Height."