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Suspension
SHOCK ABSORBERS
The Low Floor coach features double-acting, telescoping shock absorbers on both the front and rear
suspensions. The front suspension uses two shock absorbers; there are four shock absorbers installed on
the rear suspension. Each of the shock absorbers is interchangeable with the others on the same axle;
however, a front shock absorber will not t on the rear suspension and vice-versa.
Removal
Front Suspension
1. Securely support the coach body by placing blocks or jacks under the frame rail (see the “Jacking
Instructions” section of the General Information chapter for jacking/blocking locations). The axle
should also be supported either by the wheels or with a jack.
2. Remove the lower nut, at washer, and rubber bushing. Discard the rubber bushing.
3. Remove and discard the cotter on the upper nut. Then remove the nut and at washer from the
upper mounting stud.
4. Compress the shock absorber as necessary to remove it from the upper mounting stud. Then
remove the lower mounting stud and rubber bushing, which are part of the shock absorber as-
sembly, from the air spring mounting assembly. Discard the upper mounting bushings and the
remaining part of the lower mounting bushings.
Rear Suspension
1. Securely support the coach body by placing blocks or jacks under the frame rail (see the “Jacking
Instructions” section of the General Information chapter for jacking/blocking locations). The axle
should also be supported either by the wheels or with a jack.
2. Remove the nuts and washers from the shock absorber upper and lower anchor bolts.
3. Pull the shock absorber and rubber bushings off the mounting bolts.
Troubleshooting Shock Absorbers
With Koni shock absorbers, certain problems entitle the owner to a warranty claim, while others void the
warranty. Use the following guide to determine the source of shock problems and the possibility of mak-
ing a warranty claim with Koni.
Problem: Shock has “free stroke” when extending to its maximum length
Indicates air has entered the working cylinder, but does not indicate failure. To remove excess air, follow
these steps:
1. Extend to maximum length.
2. Turn shock upside down.
3. While holding shock upside down, compress to minimum length.
4. Turn shock right side up.
5. Extend to maximum length.
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