Installation Manual
Thank you for purchasing the 7X 1248 Kit! Please kindly be advised to read the instructions carefully before installing the suspension enhancement system kit. Please take safety precautions accordingly during installation.
Rear Suspension Enhancement System Kits for 2015-2020 Ford F-150 4WD (Rear Only)
HARDWARE AND TOOLS LISTS
| Ref | Part | Qty |
|---|---|---|
| 1 | WELDMENT LH/RH PAINTED | 1L-1R |
| 2 | RUBBER SPACER 4"od x 1" thk w/ AH BUSHING | 2 |
| 3 | HOLLOW RUBBER SPRING | 2 |
| 4 | HCS M10 x 40 x 1.5 GR 8.8 Z | 2 |
| 5 | HCS M10 x 65 x 1.5 GR 8.8 Z | 2 |
| 6 | M10 SPLIT LOCK WASHER GR 8.8 Z | 2 |
| 7 | HCS M10 x 30 x 1.5 GR 8.8 Z | 2 |
| 8 | DR1525H2 / DDR05 WELDMENT PAINTED | 2 |
| 9 | SADDLE CLAMP 3-1/2" | 2 |
| 10 | WASHER FLAT 3/8 x 1 GR 2 Z | 4 |
| 11 | NYLOCK LOCKNUT 3/8 UNC GR 5 Z | 4 |
INSTALLATION INSTRUCTIONS
- Raise vehicle allowing the axle to hang freely.
- Remove existing bumpstop using 13 mm socket.
- Assemble air rubber spring and bracket as shown in the adjacent diagram.
- Mount assembly using existing holes & supplied fasteners.
- Clamp bottom support onto axle using fasteners provided. Torque U-Bolt nuts to 30-35 ft. lb.
- Lower vehicle.
Diagram Description
The diagram illustrates the assembly of the rear suspension enhancement kit components onto a vehicle's rear axle. It shows the orientation from the 'Wheel Side' towards the 'Front' of the vehicle, with an 'Inboard' direction indicated. A U-bolt clamp (part 9) is secured around the axle. A bottom support bracket (part 8) is attached to the axle using the U-bolt clamp and fasteners including bolts (parts 4, 5, 7) and washers/nuts (parts 10, 11). A top bracket assembly (part 1) is mounted to the vehicle's frame. The hollow rubber spring (part 3) and rubber spacer (part 2) are positioned between the top bracket and the bottom support bracket, forming the air spring unit. Specific fasteners like M10 x 30, M10 x 40, and M10 x 65 bolts, along with M10 split lock washers and 3/8" Nylock locknuts, are used for assembly.
NOTES
- Check that brake line or brake cable locations do not interfere with air spring.
- If necessary, use rubber washer #2 and bolt #5 to achieve desired ride height.
- Do not exceed vehicle manufacturer's recommended axle weight rating.
- Check your vehicle's owner's manual and do not exceed the maximum load listed for your vehicle.
CLEARANCE INSTRUCTIONS
Rear SES Kits for Pick-Ups and Vans should have a 1/2" to 1-1/2" gap between the rubber spring and contact point when empty. A partial load, or vehicle accessories will reduce or eliminate the gap. Front SES kits are usually in full contact. Medium and Heavy-Duty Trucks, Trailers and Motorhomes will be in constant contact, and have no gap.