FORD F450/ 550 SUPER DUTY CHASSIS CABS OWNERS MANUAL

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LATERAL CONTROL ROD AXLE BRACKET INSTALLATION 1. Remove and discard the OEM shock absorbers, but retain the mounting fasteners (bolts & nuts) for re-use. 2. Remove the top d-bushing mount bolts and disconnect the axle breather tube (See Figure 2- 1). 3. If the truck is equipped with an S110 4.25″ X 4.25″ square axle (most F450s and F550s), install both axle spacer tabs on the axle bracket using (4) 1/2 x 1 1/4 UNC FLANGE BOLTS and (4) UNC TOP LOCK FLANGE NUTS. (See Figure 2-2). 4. Loosely fasten the axle bracket to the axle as shown in Figure 2-3 using (2) M12 x 1.75 x 40 METRIC BOLTS and (2) 1/2″ WASHERS. 5. Reconnect the axle breather tube to the axle. LATERAL CONTROL ROD (LCR) FRAME BRACKET INSTALLATION 1. On the PASSENGER side, remove to two top rivets from the OE bumper bracket and ream the holes to 0.47″ (See Figure 3-1) 2. Install the frame bracket as shown in Figure 3-2 using (4) 7/16 UNC TOP LOCK FLANGE NUTS. FIG. 3-2 Frame bracket Remove these two rivets and ream to 0.47″ DRIVER SIDE DISASSEMBLY 1. With weight taken off the rear springs, as noted in pre-installation checklist, remove the rear leaf spring hanger. Removal of the rear overload spring bracket is optional See Figure 4-1. 2. Remove the front spring hanger bracket and the front overload spring bracket. (See Figure 4-2). 3. Remove existing U-bolts that attach the axle to the leaf spring and keep the OE U-bolt plate for later use. (See Figure 4-3) After this is done, the axle, spring, and hanger will be loose. Remove and discard the spring and hangers from the axle.DRIVER SIDE ASSEMBLY 1. Review Figure 5-1 & Figure 13-2 to acquaint yourself with the various parts of the UltraRide suspension. 2. Fasten the Front Hanger to the frame using (6) 9/16 x 1-1/2 UNF BOLTS, (6) 9/16 UNF NUTS, and (12) 9/16 FLAT WASHERS. Route the parking brake cables through the corresponding holes on the Front Hanger. 3. Assemble the Suspension Arm to the axle using (2) M20 X 2.50, 79 X 425 METRIC U- BOLTS, (4) M20X2.5 METRIC NUTS, and original OE top plate and axle bracket. Make sure the arm/axle locating pin is properly inserted into the mating hole on the axle pad and that the bottom side of the arm rests evenly on the axle pad. 4. Insert the Bolt Spacer Tube into the arm bushing and loosely fasten the arm to the front hanger using (1) 3/4 X 7 UNF BOLT, (1) 3/4 UNF NUT, (2) 3/4 WASHERS, and (2) plastic wear washers. 5. Loosely fasten the Lateral Control Rod Axle Bracket to the Arm using (2) 1/2 X 1-1/4 UNC FLANGE BOLTS (See Figure 5-2). 6. Bolt the Air Spring Bracket Assembly to the frame using (5) 1/2 X 1-1/4 UNC FLANGE BOLTS and (5) 1/2 UNC TOP LOCK FLANGE NUTS. One frame hole will need to be reamed to 0.53″ on each side. See Figure 5-2. 7. Bolt the Air Spring to the Suspension Arm using (1) 1/2 UNC JAM NUT. Make certain the air spring is not twisted or creased after tightening the nut.