Toyota Tundra Racing 2007 – 2008 2WD and 4WD Lowering Kit PDF Installation Manual

Mix up a pack of urethane epoxy & place a small amount on the sleeve where the spring perch rests. Install the spring perch. Use the remaining epoxy on the 45 degree surface of the shock where the sleeve will seat. Install the sleeve. Slide spring onto shock assembly, being sure spring is properly seated. Reassemble Shock assembly. Slide shock/spring assembly into upper spring mount. Hand tighten all of the nuts. Pushing down on the control arm install the lower mount bolt, nut and washer. Hand tighten at this time.

Reinstall the sway bar end links. Tighten all fasteners at this time. Reinstall and torque wheels to factory specifications. Remove bottom shock mount nut . Leave bolt in place for now. Remove the four top shock mounting nuts. * Note do not remove the center nut from shock assembly Push down on the lower control arm and re- move lower shock bolt. You must hold the shock while removing bolt. Remove shock, by sliding out in front of the lower control arm. Pushing down on a pry bar will add enough leverage to remove the bot- tom of the shock from the mount. Note: This may require 2 people.

Using a spring compressor, take the pre- load off the spring assembly. Remove the shock from the shock top mount by removing the center nut. Using a rubber mallet, remove the stock spring perch. Installation of Front Lowering Kit Always Wear Safety glasses Step 1: Raise vehicle · Break loose (do not remove) the lug nuts on both front wheels before raising the truck. · Refer to the Owners Manual for the correct lift points. · Using an automotive lift, raise the vehicle and secure. · If you do not have access to an automotive lift, a floor jack and jacks stands can be used. This must be done on a level concrete surface. (Be sure to chock the rear wheels and engage the parking brake.) STEP 2: Remove front wheels

After securing the vehicle at a convenient height, remove the front wheels. STEP 3: Disassemble front sway bar end links. Remove driver and passenger side nut, washer and end link bushing. Installation of Rear Lowering Kit Always Wear Safety glasses and Gloves Step 1: Raise vehicle · Break loose (do not remove) the lug nuts on both rear wheels before raising the truck. · Refer to the Tundra Owners Manual for the correct lift points. · Using an automotive lift, raise the vehicle and secure. Note: If you do not have access to an automotive lift, a floor jacks and four jack stands can be used. Be sure to chock the front wheels and engage the parking brake.

This must be done on a level concrete surface. NEVER LEAVE ANY VEHICLE SUPPORTED WITH ONLY A JACK, ALWAYS USE JACK STANDS Step 2: Remove rear tires & spare.. Step 3: Support the rear axle & drive shaft to prevent axle housing from rolling forward. Step 4: Remove rear shocks & retain top washers.* Step 5: Remove stock u-bolt hardware and save washers to reuse.* Note: Crew Max & Double Cab only – Loosen the intermediate drive shaft carrier bearing support to allow carrier bearing to move forward. Step 6: Remove leaf springs and raise rear axle 4”. Caution: Brake hoses from frame to axle housing should not be stretched. Step 7: Clamp leaf spring pack as shown and re- verse the pin so the nut will be on the bot- tom. Step 8: Re-Install leaf springs using new TR Shackle. We suggest starting with the center hole. Each hole equals approxi- mately 1/2” drop. * Due to many factors your results may vary.

Torque the shackle nuts to 30 lbs. Step 9: Check exhaust tailpipe clearance to new leaf spring location and modify hanger / tailpipe if necessary. Page 6 Step 10: Install the TR axle components (including O.E. washers) as shown in photo below. Note: long U-bolts are used behind axle Standard Cab – Use the OE bump stop. Double Cab / Crew Max – Use the supplied bump stops & wash- ers Be sure the rear axle is level & centered at this time. Tighten U-bolts and adjust as needed. Note: Do not allow tailpipe to touch the leafspring during this step. Torque U-Bolts to 60 ft/lbs. Note: Double Cab & Crew Max Only – Tighten the Rear Shock Installation Step 11: Install NEW shocks as shown below. Remove O.E. Shocks – Re- tain top and bottom washers for use with new shock instal- lation. Install O.E. washer with larger inside diameter on the shock with the concave side up. Install first urethane bushing with smaller diameter portion up. Insert threaded shock stud through upper shock mounting hole in frame. Install second urethane bush- ing with smaller diameter por- tion down. Install O.E. washer with smaller inside diameter on the shock with the concave side down. Upper shock mounting hole in frame is sandwiched between two urethane bushings. Tighten nut to hold in place. Note: Bottom shock mount is slightly wider than replace- ment shock – use provided washers to fill space and torque to 30 ft/lbs.

Download Toyota Tundra Racing 2007 – 2008 2WD and 4WD Lowering Kit PDF Installation Manual