ROUGH COUNTRY 921437000 Superduty Diesel 6 Inch Suspension Lift Kit Installation Guide

ROUGH COUNTRY 921437000 Superduty Diesel 6 Inch Suspension Lift Kit

Specifications

• Product Name: FORD 2023 SUPER DUTY DIESEL 6 SUSPENSION LIFT KIT
• Recommended Tire Size: 37×12.50×20
• Recommended Wheel: Aftermarket wheel with 4.5 backspacing

Thank you for choosing Rough Country for your suspension needs.

• Rough Country recommends a certified technician install this system. In addition to these instructions, professional knowledge of disassembly/reassembly procedures as well as post-installation checks must be known. Attempts to install this system without this knowledge and expertise may jeopardize the integrity and/or operating safety of the vehicle.
• Please read all the instructions before beginning the installation. Check the kit hardware against the parts list. Be sure you have all the needed parts and understand where they go. Also please review the tools needed list and make sure you have the needed tools.

PRODUCT USE INFORMATION

WARNING: As a general rule, the taller a vehicle is the easier it will roll. We strongly recommend seat belts and shoulder harnesses should be worn at all times. Avoid situations where a side rollover may occur.

• Braking performance and capabilities are decreased when significantly larger/heaver tires and wheels are used. Take this into consideration while driving. Also, speedometer recalibration is necessary when larger tires are installed.
• Do not add, alter, or fabricate any factory or after-market parts that increase vehicle height over the intended height of the Rough Country product purchased. Mixing component brands, lifts, and/or combining body lift with suspension lifts voids all warranties. Rough Country makes no claims regarding lifting devices and excludes any implied claims. We will not be responsible for any product that is altered.
• If you desire a different look or if the vehicle has a toolbox or added weight in the rear, please consult with your sales representative about block / u-bolt options.

The 6” kit was developed for a 37×12.50×20 tire on an aftermarket wheel with/ 4.5” backspacing.

NOTICE: NOTICE TO DEALER AND VEHICLE OWNER
Any vehicle equipped with any Rough Country product must have the “Warning to Driver” decal installed on the sun visor or dash. The decal is to act as a constant reminder for whoever is operating the vehicle of its unique handling character-istics. INSTALLING

DEALER— It is your responsibility to install the warning decal and to forward these installation in-structions on too the vehicle owner for review and to be kept in the vehicle for its service life.

Tools Needed

• 10mm Socket / Wrench
• 15mm Socket / Wrench
• 18mm Socket / Wrench
• 19mm Socket / Wrench
• 21mm Socket / Wrench
• 24mm Socket /Wrench
• 30mm Socket
• 34 Socket
• 5/8” Socket / Wrench 1
• 1/8” Wrench
• Jack Stands
• Jack
• Pliers
• Pitman Arm Tool
• Torque Wrench

Torque Specs

Size Grade 5 Grade 8

• 7/16” 45 ft/lbs 60 ft/lbs
• 1/2” 65 ft/lbs 90 ft/lbs
• 9/16” 95 ft/lbs 130 ft/lbs
• 5/8” 135 ft/lbs 175 ft/lbs
• 3/4” 185 ft/lbs 280 ft/lbs

Class 8.8 Class 10.9

• 8MM 18ft/lbs 23 ft/lbs
• 10MM 32ft/lbs 45ft/lbs
• 12MM 55ft/lbs 75ft/lbs
• 14MM 85ft/lbs 120ft/lbs

9296 (All Kits)
6” Diesel Coil Springs

43700991 (All Kits)

• Track Bar Bracket
• Radius arm Drop Brackets (2)
• Pitman Arm
• Fr Bump-stop spacer (2)
• Fr Brake Line Brackets (2)
• Fr Dr Sway Bar Drop Bracket
• Fr Pass Sway Bar Drop Bracket
• Rear Brake Line Bracket
• Sway Bar Link Brackets (4)
• Sway Bar Links (2)
• Fr Frame Stab Bracket
• Fr Stab Bar Mount
• Fr Pass Shim Bracket
• 1504BAG1
• 43700BAG1

1550BOX2 (Overload Kits)

• Rear Blocks (2)
• 18” Round U-Bolts (4)
• 1481BAG1
• Block Shims (4)
• U-Bolt Inversion Plate
• 3/4BAG

1563BOX4 (Non-overload Kits)

• Rear Blocks (2)
• 15” Round U-Bolts (4)
• 1481BAG1
• Block Shims (4)
• U-Bolt Inversion Plate
• 3/4BAG

55002 (Non-driveshaft Kits)

• Transfer Case Clocking Ring
• 55000BAG1
• Transmission Crossmember
• Transfer Case Relocation Bracket
• Transmission Skid Bracket
• Wire Loom Bracket
• Transmission Skid Drop Bracket

5068.1 (Driveshaft Kits)
Fr Driveshaft

• 155030 – N3 Shock Kits
• 690004 – Fr Vertex Shock Pair
• 690005 – Rr Vertex Shock Pair
• 760754 – Fr V2 Shock Pair
• 760805 – Rr V2 Shock Pair
• 7673 – 15.5” U-Bolts for 4” Rear Axle
• 7675 – 18.5” U-Bolts for 4” Rear Axle

1504BAG1

• 5/16” Flange Locknut (4)
• 5/16” U-bolt (1)
• 1/2” Nylock Nut (1)
• 5/16” x 3/4” Bolts (2)
• 1/2” x 1.75” Bolt (1)
• 12mm Flange Locknut (1)
• 12mm x 55mm Bolt (1)
• 5/16” Flat Washers (2)
• 1/2” Flat Washer (1)
• 7/16” x 1.25” Bolts (4)
• 5/16” Lock Washers (8)
• 7/16” Nylock Nuts (4)

43700BAG1

• 8mm x 95mm Bolts (2)
• Radius Arm Drop Bracket Sleeves (2)
• 7/16” Flat Washers (14)
• 7/16” Top Lock Nuts (5)
• 7/16” x 1” Bolt (1)
• 7/16” x 1.25” Bolts (4)
• 5/16” Flat Washers (6)
• 18mm Lock Nut (2)
• 18mm Flat Washer (4)
• 18mm x 130mm Bolt (2)
• 7/16” X 1.25” Grade 8 Bolt (2)
• 7/16” Lock Nut (2)
• 3/8” Flange Lock Nut (2)
• 3/8” x 1.25” Bolt (2)
• 3/8” Flat Washer (2)
• 5/16” x 1” Bolt (4)
• 5/16” Flange Lock Nut (4)

1481BAG1

• 7/16” x 3.25” U-Bolts(4)
• 7/16” x 4.25” U-bolts (4)
• 7/16” Flat Washers (8)
• 7/16” Top Lock Nuts (8)

3/4BAG

• 3/4” Flat Washers (8)
• 3/16” Nylock Nuts (8)

55000BAG1

• Clocking Ring Studs (11)
• 7/16” Nuts (12)
• 7/16” Lock Washers (11)
• 9/16” Hex Nut (1)
• 7/16” Flat Washers (3)
• 10mm x 30mm Flat Flathead bolts (11)
• 7/16” Top Lock Nuts (2)
• 7/16” x 1” Bolts (2)
• 1/4” x 1” Bolt (1)
• 1/4” Flat Washer (1)
• 1/4” Nylock Nut (1)
• 3/8” x 1” Bolts (2)
• 3/8” Flat Washers (2)
• 3/8” Flange Lock Nuts (2)

PARTS

Kit Pic

FRONT INSTALLTION INSTRUCTIONS

1. Block the rear wheels of the vehicle. Raise the front of the vehicle and support the frame with jack stands. Remove the front wheels and tires and set aside. Position a hydraulic jack under the front axle and raise the jack until the front suspension begins to compress.

2. Disconnect the track bar from the driver-side frame bracket, using a 30mm wrench. See Photo 1.

3. Remove the bump stop from the cup-shaped bracket. Remove the bracket from the frame rail. See Photo 2.

4. Using a 13mm socket, remove the brake line bracket from the frame. See Photo 3.

5. Remove the ABS wire from the brake line bracket. See Photo 4.

6. Carefully bend the brake line towards the coil. Install the new brake line bracket on the frame using the factory hardware. Torque to 15 ft-lbs. Attach the brake line to the extended bracket using the supplied 5/16 bolt, washer, and nut. Torque to 15 ft-lbs. See Photo 5.

7. Repeat the process on the opposite side brake line. See Photo 6.

8. Using an 18mm wrench remove the sway bar links from the truck.

9. Using 18mm and 19mm wrenches, remove the front shocks.

10. Using 18mm and 15mm wrenches, remove the factory steering stabilizer from the truck.

11. Carefully lower the jack until the coil springs are free. Remove the coil springs from the vehicle.
    Note: Use of a coil spring compressor may be required for spring removal.

12. Support both radius arms with jack stands. Using a 24mm wrench, and socket remove the bolt holding the upper control arm to the axle. Retain stock hardware for reuse. See Photo 7.

13. Using a 1 1/8” wrench, and socket remove the bolt holding the upper control arm to the frame. See Photo 8.

14. Insert the new radius arm drop bracket into the stock location.

15. Install the 18mm x 130mm bolt, two 18mm washers, 18mm lock nut, and sleeve from 43700BAG1 into the middle hole of the radius arm drop bracket with a 1 1/16” wrench. Torque to spec. See Photo 9.

16. Install a 7/16” x 1 1/4” bolt, washers, and lock nut from 43700BAG1 in the top outer hole of the drop bracket with a 5/8” wrench and a 3/8” x 1 1/4” bolt, washers, and lock nut from 43700BAG1 in the top inner hole of the drop bracket with a 9/16” wrench. Torque to spec. See Photo 10.

17. Install two sets of 5/16” x 1” bolts, washers, and lock nuts into the rear of the radius arm drip bracket with a 9/16” wrench. Torque to spec. See Photo 11.
    NOTE : Use a clip tool to remove the ABS wiring harness to gain access to the rear bolts of the drop bracket. Reinstall harness once 5/16” bolts are installed.

18. Install the radius arms to the new drop bracket with factory hardware in the lower holes. See Photo 12.

19. Attach the arm to the axle using the stock hardware. Note: it may be necessary to raise or lower the truck to align the holes. Reattach the ABS wire to the radius arm.

20. Using a 21mm wrench and 19mm socket remove the factory track bar bracket from the frame. Retain stock hardware for re-use.

21. Using the nylon bump stop extension provided, place the extension between the frame and the bump stop cup. Bolt back into the original location using the 8mmx95mm bolt supplied. Torque to 15 ft-lbs. Reinstall the factory bump stop in the bump stop cup. See Photo 13.

22. Lower the front axle enough to install the new coil springs. Position the coil springs in the lower coil buckets on the axle and rotate as necessary to be sure that the pigtail of the coil is indexed properly in the bucket. Position the factory rubber isolator on top of each coil, then raise the axle enough to seat the coil springs in the upper spring buckets.

23. Compress the front springs enough to install the front shocks, 660818. Bolt the lower end of the shock to the axle using the stock hardware. Torque to 88 ft-lbs. using an 18mm wrench. Attach the upper end of the shock with the stock hardware, using a 19mm wrench. Torque to 15 ft-lbs. Or only enough to bulge the bushing.

24. Remove the cotter pin and nut using a 21mm wrench, from the drag link end where it attaches to the pitman’s arm.

25. Dislodge link with a tie rod end puller.
    Note: Replace the link if any stud looseness is detected, (excessive play) or (excessive wear) is found in the tie rod end.

26. Remove the collar lock bracket from the drag link on the truck using a 13mm wrench.

27. Using 15mm and 13mm wrenches, loosen the drag link adjustment collar. See Photo 14.

28. Spin the drag link over so the tie rod end is pointing up, and torque the adjustment collar to 32 ft lbs.

29. Using a 34mm socket, remove the nut from the steering sector and remove the pitman arm with a puller tool. Inspect the splines on the shaft for excessive wear, and repair if needed.

30. Install new pitman arm, lock washer, and nut. Torque to 350 ft-lbs. Using a 34mm socket, tighten the nut.

31. Attach the drag link stud to the pitman’s arm. Torque nut to 88 ft-lbs, and install cotter pin. Check for adequate linkage clearances while turning the steering wheel full lock in both positions.

32. Position the Rough Country track bar bracket on the frame in the same position as the original and secure using the factory hardware. Torque to 120 ft-lbs. See Photo 15.

33. Using a 13mm socket, remove the stabilizer mount from the frame. See Photos 16 & 17.

34. Install the new stabilizer bracket on the frame using the factory bolts, Torque to 45 ft-lbs. with a 13mm socket. See Photo 18.

35. Install the stabilizer bracket on the drag link using the supplied .5” x 2” bolt, washer and nut also using the supplied 5/16 u-bolt and nuts. See Photo 19. Torque the 1/2 inch bolt to 65 ft-lbs. Torque the 5/16 u-bolt to 15 ft-lbs.

36. Install the stabilizer on the frame mount using the factory hardware. Torque to 55 ft-lbs. using 18mm an socket. See Photo 20.

37. Using a 15mm socket, lower the factory sway bar from the frame. Retain the factory hardware.

38. Install the supplied sway brackets to the factory studs using the factory nut. See Photo 21. Torque to 32 ft-lbs using a 15mm socket.

39. Install the sway bar onto the brackets using the supplied 7/16” x 1.25” bolts, washers, and nuts. Tighten using a 5/8” socket and wrench. See Photos 22 & 23. Torque to 60 ft-lbs.

40. Install the supplied upper and lower sway bar link mounts using the supplied 1/2” x 1.5” bolts washers and nuts. Tighten using 3/4” wrenches. See Photo 24. Torque to 70 ft-lbs.

41. Install the sway bar links into the brackets using the supplied 12mm x 65mm bolts, washers, and nuts. Tighten using 18mm and 19mm wrenches. See Photo 25. Torque to 55 ft-lbs.

42. Install tires and wheels and lower the vehicle to the ground.

43. Line up the track bar with the hole in the new track bar bracket. You may have to start the truck and turn the wheels in the direction the track bar needs to go to help align the track bar with the hole. Install using the stock track bar bolt. Tighten bolt. Torque to 270 ft-lbs.

44. Torque the radius arm bolts to 270 ft-lbs.

45. Torque the radius arm brackets to 270 ft-lbs.

REAR INSTALLATION

1. Chock the front wheels and jack up the rear of the vehicle. Secure with jack stands on the frame rail.
2. Place a floor jack under the rear differential on the rear axle. Using an 18mm wrench for the upper, and a 19mm and 15mm wrench for the lower, remove the stock shock absorbers, and retain the stock hardware for reuse.
3. Remove the diff vent hose from the differential. See Photo 1.
4. Remove the diff vent tube using a 5/8” wrench. Retain the vent tube for reuse. See Photo 2.
5. Install the supplied bracket in the stock location using the stock hardware. Torque to 28 ft-lbs. using a 5/8” socket. See Photo 3.
6. Install the stock brake line bracket to the new bracket with the supplied 7/16” x 1” Bolts, washers and lock nuts and Torque to 45 ft-lbs. using 5/8” wrench. Reinstall the diff vent hose as shown. See Photo 4.
7. Using a 24mm socket, remove the stock U-bolts. Use the floor jack to lower the axle assembly to allow for lifted block installation.
8. Using C-clamps, clamp the spring pack on each side of the center pin.
9. Using locking pliers, lock onto the bottom of the center pin. See Photo 5.
10. Using a 9/16” socket, remove the nut from the center pin. See Photo 6.
11. Remove the factory U-bolt plate. See Photo 7.
12. Using the stock hardware, attach the supplied bolt plate and the center pin. Torque to 31 ft-lbs. using a 9/16” sock-et. See Photo 8.
13. Install the supplied shim plates between the block and the leaf spring. Install the supplied 7/16” square u-bolts and hardware. Torque to 35 ft-lbs. using a 5/8” socket.
14. Install the new supplied 3/4” u-bolts from the bottom. Use the supplied 3/4” hardware. Torque to 150 ft-lbs. using a 1- 1/8” socket. See Photo 9.
15. Locate shock part number 660805. Using a 18mm wrench, for the upper, and a 19mm and 15mm wrench for the lower. Install using factory hardware on upper and lower shock mount. Torque to 60 ft-lbs.
16. Install the tires and wheels.
17. Jack up the rear of the vehicle and remove the jack stands. Lower the vehicle to the floor.
18. With the weight of the vehicle on the axle, torque the u-bolts to 150 ft-lbs.
19. Check all hardware for proper torque.

POST INSTALLTION INSTRUCTIONS

1. Adjust the steering wheel to re-center before driving.
2. Check all fasteners for proper torque. Check to ensure adequate clearance between all rotating, mobile, fixed, and heated members. Verify clearance between exhaust and brake lines, fuel lines, fuel tank, floor boards, and wiring harness. Check the steering gear for clearance. Test and inspect the brake system.
3. Perform a steering sweep to ensure front brake hoses have adequate slack and do not contact any rotating, mobile or heated members. Inspect rear brake hoses at full extension for adequate slack. Failure to perform hose check/ re-placement may result in component failure. Longer replacement hoses, if needed can be purchased from a local parts supplier.
4. Have a qualified alignment center realign the front end to
5. Install Warning to Driver decal on sun visor.
   • Caster min– 4.0 degree
   • Camber – 0.6—.09 degree
   • Toe –.10– .15 degree
6. Re-torque all nuts, bolts, and especially u-bolts after the first 100 miles, again after another 100 miles and then check periodically thereafter.
7. All components must be retightened after 500 miles, and every three thousand miles after installation
8. Adjust headlights to proper settings.

Thank you for choosing Rough Country for your suspension needs
By purchasing any item sold by Rough Country, LLC, the buyer expressly warrants that he/she is in compliance with all applicable Federal, State, and Local laws and regulations regarding the purchase, ownership, and use of the item. It shall be the buyers responsibility to comply with all Federal, State and Local laws governing the sales of any items listed, illustrated or sold. The buyer expressly agrees to indemnify and hold harmless

Rough Country, LLC for all claims resulting directly or indirectly from the purchase, ownership, or use of the items.

FAQ

• Q: Can I install this suspension lift kit myself?
  • A: It is recommended to have a certified technician install this system to ensure proper installation and safety.

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