ReadyLift 46-5780 User manual

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**Please retain this document in your vehicle at all times.**
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.
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 [phone] to get an RGA# for any return. 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. Fur-
thermore, ReadyLIFT reserves the right to change, modify or cancel this warranty without prior notice.
46-5780 Tundra 6”-8” Coil-Over Kit

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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 driver and passengers.
Driver and passengers must ALWAYS wear your seat belts, avoid quick sharp turns and other sudden maneu-
vers. 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 installa-
tion 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 sup-
ported on a two post vehicle lift with safety jacks.
Use caution during all disassembly and assembly steps to insure 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.
Installer is responsible to insure a safe and controllable vehicle after performing modifications.
ReadyLIFT Suspension recommends the use of an OE Service Manual for model/year of vehicle when disas-
sembly and assembly of 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 original vehicle ride height. Always measure the vehicle ride height
prior to beginning installation.

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VEHICLE HEIGHT MEASURMENTS
Driver
Before
Driver
After
Passenger
Before
Passenger
After
Front
Rear
IMPORTANT NOTE:
This suspension system was developed using a 35” x 12.5” (6” lift) and 37” x
12.5” (8” lift) tire with 20” x 9” wheel and a offset of +25. 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 dif-
ferentials may occur.

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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 to find one of our “Pro-
Grade” Dealers.
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 avail-
able vehicle hoist.
• Vehicle must be in excellent operating condition. Repair or replace any and all worn or damaged com-
ponents prior to installation.
Performance Coil-over 2
Coil-over Top Hat Adaptor 2
Driver Reservoir Mount 1
Passenger Reservoir Mount 1
Hose Clamp 4
Coil-over Top Cap Spacers 4
Rod End Spacer, Small 2
Rod End Spacer, Larger 2
M10 Flange Nut 8
1/2” x 2.75” Bolt 2
1/2” Washer 4
1/2” Lock Nut 2

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***Parts shown in red for picture clarification only***
ReadyLIFT recommends all steps and procedures described in these in-
structions be performed while the vehicle is properly supported on a two
post vehicle lift with safety jacks. Otherwise, park vehicle on a clean flat
surface and block the rear wheels for safety. Engage the parking brake.
Disconnect the vehicle power source at the ground terminal on the battery.
Lock the steering wheel in the straight forward position with the column
lock or steering wheel locking device.
Raise the front of the vehicle and support with safety jack stands at each
frame rail behind the lower control arms. Remove the front wheels.
Disconnect lower sway bar end link at the
lower control arm. Retain factory hard-
ware.
Remove the cotter pin and outer tie rod
end nut. Strike the tie rod end boss with a
dead blow hammer to dislodge the taper.

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Support the lower control arm with a suit-
able jack. Remove the lower ball joint cra-
dle bolts from the knuckle. Be sure to re-
tain the factory bolts.
Remove lower strut mounting hardware.
Retain the factory hardware.
Support the knuckle/hub assembly with a
suitable jack. Swing the lower control arm
down and out of the way to aid in the re-
moval of the strut assembly.
Remove the upper strut mounting hard-
ware. Discard the factory mounting hard-
ware.
Remove the complete strut assembly and
dispose of it in an appreciate fashion.

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Notch the lower control arm strut pocket
as shown. Radius the back edge following
the pocket profile. This is for clearance on
the coil-over rod end at full droop.
Coat all raw surfaces with a quality paint
to prevent corrosion.
Install the supplied coil-over top hat adap-
tor using (2) coil-over top cap spacers,
1/2 bolt, locking nut and washers.
Torque the 1/2” hardware to 80 ft-lbs
Note: Ensure that the top hat is installed
with the notch facing the reservoir banjo
fitting and the offset towards the frame
(as shown in picture).
The coil-over come preset for the 8” kit.
However, fine tuning may be necessary to
achieve the correct right height.
Adjustments are made by loosening the
preload collar set screw and turning the
collar to add height (Clockwise) or remove
height (Counter-clockwise).
Note: Fine tuning may be required due to
the differences in frame tolerances, added
accessories and/or payload differences.

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846-5780-IM-AA
Note: If coil-overs are being installed on
the 6” lift kit, the preload collar will need
to be adjusted for that application.
Loosening the preload collar set screw and
turning the collar counter-clockwise to
raise the collar. Measure the distance be-
tween the top of the preload collar and
the edge of the top cap (as shown). Ap-
proximate distance should be 4.75”.
Install the coil-over assembly into the ve-
hicle using the supplies M10 flange nuts.
Install the rod end misalignment spacers
into the rod end ensuring the large spacer
is toward the front and the small is toward
the rear of the vehicle.
Swing lower control arm up into place and
install the coil-over rod end into the con-
trol arm pocket using the factory strut
hardware.
Install the appropriate reservoir bracket
by removing the sway bar bracket hard-
ware and sliding the bracket in between
the frame rail and the sway bar drop
bracket. Install the factory sway bar
bracket hardware.
Torque to the hardware to 45 ft-lbs.
Note: Brackets are side specific and need
to be installed with the offset towards the
rear of the vehicle.
Route the reservoir between the upper
control arm and the tie rod.
Install reservoir to the bracket using the
supplied #48 hose clamps.
Hose clamps are to be routed through the
slots in the bracket.

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Install the lower ball joint cradle using the
factory hardware. Add a drop of thread
locker to the lower mounting hardware.
Torque the lower cradle hardware to
180 ft-lbs.
Install the outer tie rod end to the knuckle
using the factory hardware.
Torque to the nut to 65 ft-lbs.
Install the cotter pin.
Install the sway bar links to the lower con-
trol arms using the factory hardware.
Torque all to 55 ft-lbs
(Shown without coil-over assembly for
clarification).
Install the front wheels and lower the vehicle to the ground. Torque the lug nuts to
the wheel manufacturer specs.
Jounce the front suspension to settle the vehicle to ride height.
Center the lower control arm cams and torque to 100 ft-lbs (final torque to be done
by alignment technician), the lower strut hardware to 125 ft-lbs, and the upper strut
hardware to 35 ft-lbs.

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1046-5780-IM-AA
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 which 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 then right and verify adequate tire, wheel,
brake line, and ABS wire clearance. Test and inspect steering, brake and suspension compo-
nents for tightness and proper operation. Inspect brakes hoses and ABS lines for adequate
slack at full extension, 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.
Driver Passenger Tolerance Total / Split
Camber +0.3 +0.3 +/- 0.5 +0.0
Caster +2.0 +2.0 +/- 0.5 +0.0
Toe +.07 +.07 +/-0.05 +.14
RECOMMENDED ALIGNMENT SPECS