Auxiliary Spring - ProGear Hendrickson HN FR Series Service Manual

SERVICE HINT
17730-285
Pro Gear and Transmission • 906 W. Gore St. Orlando, FL 32805 • 1 (877) 776-4600 / (407) 872-1901 • parts@eprogear.com
6. Tighten all sixteen (16) bolster spring fasteners to
8-2.
7. Install the auxiliary spring components to the saddle, see Figure 8-1.
a. Install the inboard fasteners through the saddle. Install the auxiliary spring shim(s),
auxiliary spring mounting plate, and auxiliary spring mounting plate shim onto the
inboard fasteners. Loosely install the washers and locknuts on the inboard fasteners.
DO NOT tighten at this time.
b. Install the outboard fastener through the saddle and auxiliary spring shim(s), ½" auxil-
iary spring 0.25" thick washer, and the auxiliary spring mounting plate.
8. Tighten the auxiliary spring fasteners to
9. Install the upper anchor plate assembly through the rebound strap. Install the upper anchor
plate to the auxiliary spring mounting plate.
10. Tighten the upper anchor plate fasteners to
11. Remove the wheel chocks.

AUXILIARY SPRING

Tire removal is not necessary to service the auxiliary spring.
DISASSEMBLY
1. Chock the front wheels of the
vehicle.
2. Raise the frame of the vehicle
just enough to remove the
load from the bolster springs.
Support the frame at this
height with frame stands.
3. Remove the fasteners se-
curing the auxiliary spring
mounting plate to the saddle,
see Figure 8-3.
4. Slide the auxiliary spring off the auxiliary spring mounting plate.
ASSEMBLY
1. Slide the auxiliary spring onto the auxiliary spring mounting plate.
2. Install the auxiliary spring mounting plate to the saddle.
a. Install the auxiliary spring shim(s) if removed, auxiliary spring mounting plate and
auxiliary spring mounting plate shim onto the inboard fasteners. Loosely install the
washers and locknuts, see Figure 8-4. DO NOT tighten at this time.
b. Install the outboard fasteners through the saddle, auxiliary spring shim(s), ½" auxiliary
spring 0.25" thick washer, and auxiliary spring mounting plate.
3. Tighten the fasteners to
4. Remove the frame supports and lower the vehicle completely.
5. Remove the wheel chocks.
33-45 foot pounds torque, see Figure
90-105 foot pounds torque.
90-105 foot pounds torque.
FIGURE 8-3
90-105 foot pounds torque.
25
HN ® FR Series
Component Replacement