READYLIFT 66-21320 2021-up Ford F-150 3 Inch Tremor Lift Kit Falcon Rear Shocks Instruction Manual

READYLIFT 66-21320 2021-up Ford F-150 3 Inch Tremor Lift Kit Falcon Rear

Shocks

Product Information

• Product Name: 66-21320 2021-up Ford F-150 3 Tremor Lift Kit w/Falcon Rear Shocks
• Manufacturer: ReadyLIFT
• Warranty: Limited Lifetime Warranty
• Contact Information:
• Phone: 877-759-9991
• Support Email: support@readylift-ami.COM.
• Website: ReadyLIFT.COM

Product Usage Instructions

Important Notes and Warnings:

• Please retain this document in your vehicle at all times.
• Read instructions thoroughly and completely before beginning installation.
• Installation by a certified professional mechanic is highly recommended.
• Review all state and local laws related to bumper height laws and the lifting of the vehicle before purchasing and installing any ReadyLIFT products.
• Check the surrounding area for obstructions, people, and animals before moving the vehicle.
• All raised vehicles have increased blind spots. Failure to follow instructions may result in damage, injury, and/or death.
• Due to the nature of Ford’s lane-keeping/lane-departure features, it may be necessary to have the vehicle’s camera and sensors recalibrated after installation. Contact your local Ford dealership for assistance.
• Not recommended for use on CCD-equipped vehicles as it may require the removal of the rear load sensing dampers and the subsequent loss of this system.

Pre-Installation Measurements:

Perform the following measurements before starting the installation:

Passenger After

Bill of Materials:

The following components and hardware are included in the kit:

The following hardware is included:

Installation Steps:

1. Remove the front wheels.
2. Using an appropriate jack, support the knuckle.
3. Remove the sway bar end link from the knuckle. Retain the factory mounting hardware.

Note: For detailed installation instructions and additional steps, please refer to the complete user manual provided with the product.

IF your ReadyLIFT® product has a damaged or missing part, please contact customer service directly and a new replacement part will be sent to you immediately. For warranty issues, please return to the place of installation and contact ReadyLIFT

• 877-759-9991
• MON-FRI 7AM-4PM PST
• EMAIL: support@readylift-ami.COM
• WEBSITE: ReadyLIFT.COM
• Please retain this document in your vehicle at all times.

Warranty

Limited Lifetime Warranty

• This unique product warranty proves our commitment to the quality and reliability of every product that ReadyLIFT manufactures. The ReadyLIFT product warranty only extends to the original purchaser of any ReadyLIFT product, if it breaks, we will give you a new part. Warranty does not apply to discontinued parts.
• Our Limited Lifetime Warranty excludes the following ReadyLIFT items; bushings, bump stops, ball joints, tie rod ends, heim joints and shock absorbers. These parts are subject to wear and are not considered defective when worn. They are warranted for 12 months from the date of purchase for defects in workmanship.
• This product warranty is voided if the vehicle is not aligned after kit installation and proper maintenance is routinely done.

Product purchased directly from ReadyLIFT has a 90-day return policy on uninstalled products from the date of purchase (may be subject to restocking fee). Uninstalled product returns must be in the original Ready-LIFT packaging. Please call 877-759-9991 to get an RGA# for any return. The customer is responsible for shipping costs back to ReadyLIFT. Returns without RGA# will be refused. Contact ReadyLIFT directly about any potentially defective parts prior to removal from vehicle.
ReadyLIFT products are NOT intended for off-road abuse. Any damage or failure as a result from off-road abuse voids the warranty of the ReadyLIFT product. ReadyLIFT is NOT responsible for any subsequent dam-ages to any related vehicle parts due to misuse, abuse, improper installation, or lack of maintenance. Furthermore, ReadyLIFT reserves the right to change, modify or cancel this warranty without prior notice.

Warning

• READ INSTRUCTIONS THOROUGHLY AND COMPLETELY BEFORE BEGINNING INSTALLATION.
• INSTALLATION BY A CERTIFIED PROFESSIONAL MECHANIC IS HIGHLY RECOMMENDED.
• READYLIFT® IS NOT RESPONSIBLE FOR ANY DAMAGE OR FAILURE RESULTING FROM IMPROPER INSTALLATION.

Safety Warning

MISUSE OF THIS PRODUCT COULD LEAD TO INJURY OR DEATH.
Suspension systems or components that enhance the on and off-road performance of your vehicle may cause it to handle differently than it did from the factory. Extreme care must be used to prevent loss of control or vehicle rollover during abrupt maneuvers. Always operate your vehicle at reduced speeds to ensure your ability to control your vehicle under all driving conditions. Failure to drive safely may result in serious injury or death to the driver and passengers. Driver and passengers must ALWAYS wear their seat belts, and avoid quick sharp turns and other sudden maneuvers. ReadyLIFT Suspension does not recommend the combined use of suspension lifts, body lifts, or other lifting devices. You should never operate your vehicle under the influence of alcohol or drugs. Constant maintenance is required to keep your vehicle safe. Thoroughly inspect your vehicle before and after every off- road use. It is the responsibility of the retailer and/or the installer to review all state and local laws, with the end user of this product, related to bumper height laws and the lifting of their vehicle before the purchase and installation of any ReadyLIFT products. It is the responsibility of the driver/s to check their surrounding area for obstructions, people, and animals before moving the vehicle. All raised vehicles have increased blind spots; damage, injury and/or death can occur if these instructions are not followed.

Installation Warning
All steps and procedures described in these instructions were performed while the vehicle was properly supported on a two-post vehicle lift with safety jacks. Use caution during all disassembly and assembly steps to ensure suspension components are not over-extend-ed causing damage to any vehicle components and parts included in this kit. Included instructions are guidelines only for recommended procedures and are not meant to be definitive. The installer is responsible to ensuring a safe and controllable vehicle after performing modifications. ReadyLIFT Suspension recommends the use of an OE Service Manual for the model/year of the vehicle when disassembly and assembly of the factory and related components. Unless otherwise specified, tighten all bolts and fasteners to standard torque specifications listed within the OE Service Manual. Suspension components that use rubber or urethane bushings should be tightened with the vehicle at normal ride height. This will prevent premature wear or failure of the bushing and maintain ride comfort. Larger tire and wheel combinations may increase leverage on suspension, steering, and related components. Due to payload options and initial ride height variances, the amount of lift is a base figure. Final ride height dimensions may vary in accordance to the original vehicle ride height. Always measure the vehicle ride height prior to beginning installation.

SAEJ2492 Warning
By installing this product, you acknowledge that the suspension of this vehicle has been modified. As a result, this vehi-cle may handle differently than that of factory-equipped vehicles. As with any vehicle, extreme care must be used to prevent loss of control or roll-over during sharp turns or abrupt maneuvers. Always wear seat belts, and drive safely, recognizing that reduced speeds and specialized driving techniques may be required. Failure to drive this vehicle safely may result in serious injury or death. Do not drive this vehicle unless you are familiar with its unique handling character-istics and are confident of your ability to maintain control under all driving conditions. Some modifications (and combina-tions of modifications) are not recommended and may not be permitted in your state. Consult your owner’s manual, the instructions accompanying this product, and state laws before undertaking these modifications. You are responsible for the legality and safety of the vehicle you modify using these components.

Due to payload options and initial ride height variances, the amount of lift is a base figure. Final ride height dimensions may vary in accordance to the original vehicle ride height. Always measure the vehicle ride height prior to beginning installation.

A lifted vehicle may have a different headlight aim performance. ReadyLIFT recommends marking and recording the headlight beam position before kit installation and then adjusting, if necessary, the headlamps to the same height settings after kit installation. Set the vehicle on a level surface 10′ to 15’ from a solid wall or garage door. (This is a general distance with some manufacturers requiring different distances.) Note the top height of the low beam’s bright spot, the top of the most intense part of the beam, for the driver and passen-ger side. Height may vary from side to side. Repeat this procedure and adjust after lift kit is installed. Ad-just if the aim is off by turning the adjusters gradually (a quarter of a turn) and looking to see where the new alignment falls. It may be easier to block one headlamp while adjusting the other. Consult the owner operation manual for procedures to adjust headlights – many automakers offer headlight aiming specs. Some states have their own specifications when it comes to headlight aim, so it’s best to follow those rules when alighting headlights.

This suspension system was developed using a 295-60R20 tire with 20” x 9” wheel and an offset of +18. If wider tires are used, offset wheels may be necessary and trimming may be required. Factory wheels can be used but are not recommended with tires over 11.5” wide.

The stock spare rim can be run in an emergency – exercise extreme caution under stock spare tire operating conditions. Please note that, if running the spare factory tire, it is done for short distances and a speed not to exceed 45mph or damage to differentials may occur.

IMPORTANT NOTE:

Due to the nature of Ford’s lane-keeping/lane-departure features, it may be necessary to have the vehicles camera and sensors recalibrated to ensure these systems function as they did prior to installation. Please contact your local Ford dealership to set up an appointment. Not recommended for use on CCD- equipped vehicles. Installing on such vehicle will require the removal of the rear load sensing dampers and the subsequent loss of this system.

PRE-INSTALLATION MEASUREMENTS

is imperative that you record the following measurements and factory components in the tables below. ReadyLIFT tests and records as much data from each application as available at the time of product development. Vehicle manufacturers may change components or add models with different options. Recording and not exceeding the fender-to-hub-center ReadyLIFT calls out will ensure the lift on the vehicle is correct. These measurements will affect the performance of this lift kit. Failure to ensure proper stock conditions may result in overlifting, causing premature failure of axles, CV boots and drivetrain. Overlifting a vehicle will also result in an incorrect wheel alignment. This will wear tires incorrectly. Incorrect alignment will cause poor vehicle handling issues including but not limited to understeer. Overlifting will also cause a shock top off condition resulting in poor ride quality accompanied by pops and clunks which are symptoms of prematurely wearing components. Failure to adjust head lamps may cause dangerous driving conditions for you and oth-er drivers on the road. Record the head lamp position before the installation of this lift or leveling kit and adjust to original factory position after the completion to ensure a safe and enjoyable experience.

VEHICLE HEIGHT MEASUREMENTS

| Driver Before| Driver After| Passenger Before| Passenger After
---|---|---|---|---
Front| | | |
Rear| | | |

• MEASUREMENT IS TO BE PERFORMED FROM THE CENTER OF THE HUB TO THE FENDER EDGE STRAIGHT UP FROM HUB.**
• RECORD HEAD LAMP MEASUREMENTS

Driver Before| Driver After| Passenger Before| Passenger After
---|---|---|---
| | |

BILL OF MATERIALS

Before starting installation: ReadyLIFT Suspension highly recommends that the installation of this product be performed by a professional mechanic with experience working on and installing suspension products. Professional knowledge and skill will typically yield the best installation results. If you need an installer in your area, please contact ReadyLIFT Suspension Customer Service or check out the dealer’s tab on our Website for authorized installers.

INSTALLATION BY A PROFESSIONAL IS HIGHLY RECOMMENDED.

• A Factory Service Manual for your specific Year / Make / Model is highly recommended for reference during installation.
• All lifted vehicles may require additional driveline modifications and/or balancing.
• A vehicle alignment is REQUIRED after installation of this product.
• Speedometer / Computer recalibration is required if changing +/- 10% from factory tire diameter.
• A vehicle lift or hoist greatly reduces installation time. Installation time estimates are based on an available vehicle hoist.
• The vehicle must be in excellent operating condition. Repair or replace any and all worn or damaged components prior to installation.
• ReadyLIFT recommends all steps and procedures described in these instructions be performed while the vehicle is properly supported on a two post vehicle lift with safe-ty jacks.
• Otherwise, park the vehicle on a clean flat surface and block the rear wheels for safety. Engage the parking brake.3
• Disconnect the vehicle power source at the ground terminal on the battery.
• Lock the steering wheel in a straightforward position with the column lock or steering wheel locking device.
• Raise the front of the vehicle and support it with safety jack stands at each frame rail behind the lower control arms.

Remove the front wheels.

• Using an appropriate jack, support the knuckle.
• Remove the sway bar end link from the knuckle.
• Retain the factory mounting hardware.
• Remove the tie rod end on the knuckle.
• Retain the factory nut.
• Loosen but do not remove the top strut nuts.
• Remove the lower strut nuts. Retain the factory mounting hardware.
• Loosen and remove the lower control arm pivot bolts. Retain the factory bolts.
• Note : Discard the factory nuts. Provided alignment cam nuts will be installed during installation.
• Remove the lower control arm pivots from the frame side pivot pockets.
• Swing the lower control arm down while removing the lower strut studs from the control arm.
• NOTE: USING A MARKING DEVICE LIKE A PAINT PEN, MARK THE STRUT AT THE OUTBOARD POSITION. THIS MARKING WILL BE MOUNTED IN-BOARD DURING LIFTED STRUT INSTALLATION.
• Remove the (3) top strut nuts and careful-ly remove the strut assembly from the vehicle. Retain the factory hardware.
• CAUTION: BE SURE TO SUPPORT THE STRUT WHILE REMOVING THE TOP STRUT NUTS.
• CAUTION: THE SPRING IS UNDER EXTREME PRESSURE AND CAN CAUSE BODILY INJURY AND/OR DEATH IF HANDLED IMPROPERLY.
• Place the strut into a spring compressor. Mark the top hat to spring location for re-assembly. Take care as the strut is under extreme pressure. Relieve the tension on the spring and remove the top hat.
• CAUTION: TAKE SPECIAL CARE WHEN DISASSEMBLING AND ASSEMBLING THE STRUT ASSEMBLIES. DAMAGE TO THE STRUT CAN OCCUR IF DONE INCORRECTLY.
• Install the factory top hat and supplied preload spacer onto the rubber isolator 180 degrees from the previously made marks for orientation. This will orient the spring in its original location to prevent the CCD actuator from hitting the CV axle. When tightening, make sure the top of the strut shaft is fully seated into the top hat
• Torque the top strut hardware to 35 ft-lbs.
• Install the top strut spacer onto the strut assembly using the factory nuts.
• Torque the factory nuts to 30 ft-lbs.
• NOTE: Actual strut spacer may vary.
• NOTE: IF INSTALLING KIT ON A VEHICLE EQUIPPED WITH AUTO-ADJUSTING HEADLIGHTS OR CCD, REMOVE THE BALL STUD MOUNTED TO THE FACTORY CONTROL ARM BRACKET. RETAIN THE MOUNTING HARDWARE.
• NOTE: IT MAY BE NECESSARY TO MANUALLY ADJUST HEADLAMP HEIGHT DOWN AFTER THE LIFT KIT INSTALLATION.
• Remove the factory upper control arm and discard.
• Retain the factory pivot bolts.
• Install the supplied upper control arm in the factory orientation.
• Torque the factory hardware to 120 ft/lbs.
• NOTE: IF YOU ARE INSTALLING KIT ON A AUTO HEADLIGHT LEVELING OR CCD-EQUIPPED VEHICLE, REMOVE THE SUPPLIED M5 BUTTON HEAD ALLEN FROM THE HOLE ON THE FRONT SIDE OF THE CONTROL ARM.
• NOTE: IF INSTALLING KIT ON A VEHICLE EQUIPPED WITH AUTO-ADJUSTING HEADLIGHTS OR CCD INSTALL THE SUPPLIED UPPER CONTROL ARM CLAMP USING THE SUPPLIED M5 ALLEN BOLT.
• Torque the M5 Allen bolt to 4 ft/lbs.
• Install the front sensor ball stud into the upper control arm clamp using the factory hardware.
• Torque the ball stud hardware to 5 ft/lbs.
• Using the supplied M10 nuts, install the completed strut assembly into the frame.
• Install the ball joint boot spacer between the bottom of the boot and the top of the knuckle and raise the knuckle high enough to install the ball joint into the knuckle.
• Install the supplied nut on the ball joint. Do not tighten at this time.
• Raise the lower control arm up and guide the lower strut studs into place.
• Continue to raise the lower control arm up until you are able to install the factory lower strut nuts.
• Torque the factory nuts to 45 ft-lbs.
• Using an appropriate jack, carefully jack the lower control arm into the frame side pivot pockets. Install the factory pivot bolts.
• Install the supplied alignment cam plate over the pivot bolt so pin fits in the existing small hole in the frame and then install the alignment eccentric cam nut by threading the bolt into the nut.
• Install the alignment cam nut towards the center of the vehicle (The most positive cam-ber position of the wheel) and tighten slightly.
• Tighten the top strut nuts.
• Torque the M10 nut to 35 ft-lbs.
• Carefully route the CCD solenoid harness over the tie rod.
• Install the (2) retaining clips that secure the CCD solenoid harness to the frame.
• Connect the CCD solenoid harness connection.
• Install the tie rod end into the knuckle us-ing the factory hardware.
• Torque the factory nut to 60 ft-lbs.
• Install the sway bar end link into the knuckle using the factory hardware.
• Torque the factory nut to 45 ft-lbs.
• Using the appropriate tool, grease the upper ball joint until the boot just starts to expand. Do not over-grease. Over grease can cause premature wear.

Rear Installation

• Block the front tires and raise the rear of the vehicle using a suitable jack.
• Support with jack stands at each frame rail in front of the rear leaf spring hangers.
• Using an appropriate jack, support the axle.
• With the axle supported, remove the rear shock. Retain the factory mounting hardware.
• Install the supplied Falcon rear shock using the factory hardware. Torque after reinstalling the wheels and lowering the vehicle to the ground.

Prior to installing wheels, complete all installation steps on the opposite side. Install the wheels and lower the vehicle to the ground. Torque the lug nuts to the wheel manufacturer’s specs. Jounce the vehicle to settle the suspension to the new ride height. Torque the lower control arm hardware to 200 ft-lbs and rear shock hardware to 75-ft/lbs.

• With the steering wheel centered, turn the tie rod ends until the tires appear straight. If the steering wheel is not centered properly, the ABS/traction control lights may activate. Turn the wheels from lock to lock and make sure the brake lines and ABS routing clears all suspension components adequately. Reposition if necessary.
• Reconnect the battery ground terminal. Start the vehicle and turn the steering wheel lock to lock and verify all clearances between tire, body, and suspension components. Adjust as necessary.
• Have wheel alignment performed by a qualified alignment technician. Have the alignment set to the recommended specs at the end of the instructions.
• Adjust the headlights to compensate for the new lift height.

FAILURE TO PERFORM THE POST-INSPECTION CHECKS MAY RESULT IN VEHICLE COMPONENT DAMAGE AND/OR PERSONAL INJURY OR DEATH TO THE DRIVER AND/OR OTHERS

Final Checks & Adjustments
Once the vehicle is lowered to the ground, check all parts that have rubber or urethane components to ensure proper torque. Torque lug nuts to the wheel manufacturer specs. Move vehicle backwards and forwards a short distance to allow suspension components to adjust. Turn the front wheels completely left and then right and verify adequate tire, wheel, brake line, and ABS wire clearance. Test and inspect steering, brake and suspension components for tightness and proper operation. Inspect brake hoses and ABS lines for adequate slack at full extension, and adjust as necessary.

RECHECK ALL HARDWARE FOR PROPER TORQUE VALUES AFTER 500 MILES, AND THEN PERIODICALLY AT EACH SERVICE INTERVAL THERAFTER.
Vehicle Handling Warning
Increasing the height of your vehicle raises the center of gravity and can affect stability and control. Use caution on turns and when making steering corrections.
Vehicles with larger tires and wheels will handle differently than stock vehicles. Take time to familiarize yourself with the handling of your vehicle.
Wheel Alignment/Headlamp Adjustment
It is necessary to have a proper and professional wheel alignment performed by a certified alignment technician. Align the vehicle to factory specifications. It is recommended that your vehicle alignment be checked after any off-road driving.
In addition to your vehicle alignment, for your safety and others, it is necessary to check and adjust your vehicle headlamps for proper aim and alignment. If the vehicle is equipped with active or passive safety/collision monitoring and/or avoidance systems including, but not limited to, camera- or radar-based systems, check and adjust your vehicle’s systems for proper aim and function.

RECOMMENDED ALIGNMENT SPECS

• www.ReadvLIFT.com.
• Phone: 877-759-9991
• www.ReadyLIFT.com.
• Phone: 877-759-9991

References

• Foundational Technology - AMI
• ReadyLIFT | Leveling Kits | Lift Kits | Jeep Lift Kits | Block Kits | ReadyLIFT Suspension
• ReadyLIFT | Leveling Kits | Lift Kits | Jeep Lift Kits | Block Kits | ReadyLIFT Suspension

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