Rough Country 746.20 User Manual
92174600
05-12 TACOMA 4” Kit
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 instructions before beginning installation. Check the kit hardware against the parts list on this page and the
product layout on the last page. Be sure you have all needed parts and know where they go. Also please review tools
needed list and make sure you have needed tools.
As a general rule, the taller a vehicle is, the easier it will roll. Seat belts and shoulder harnesses should be worn at all
times. Avoid situations where a side rollover may occur.
Generally, braking performance and capability are decreased when larger/heavier tires and wheels are used. Take this
into consideration while driving. Do not add, alter, or fabricate any factory or after-market parts to increase vehicle height
over the intended height of the Rough Country product purchased. Mixing component brands is not recommended.
Rough Country makes no claims regarding lifting devices and excludes any and all implied claims. We will not be responsible for any product that is altered.
If questions exist we will be happy to answer any questions concerning the design, function, and correct use of our products.
This suspension system was developed using a Maximum tire size of 33 X 12.5 tires with an 17 x 8 wide aftermarket
wheel with 4 5/8” backspacing.
NOTICE TO DEALER AND VEHICLE OWNER
Any vehicle equipped with any Rough Country product should have a “Warning to Driver” decal installed on the inside of
the windshield or on the vehicle’s dash. The decal should act as a constant reminder for whoever is operating the vehicle of its unique handling characteristics.
INSTALLING DEALER - it is your responsibility to install the warning decal and forward these installation instructions on
to the vehicle owner for review. These instructions should be kept in the vehicle for its service
Tools Needed:
10mm Wrench
12 mm Socket/Wrench
14 mm Socket/Wrench
17 mm Socket/Wrench
19 mm Socket/Wrench
21mm Socket/Wrench
22mm Socket/Wrench
35mm Socket
5mm Allen Wrench
9/16” socket/wrench
1 1/16” Wrench
1 1/8” Wrench
11/32” Drll Bit
Hammer
Jack Stands
Floor Jack
Flat Screwdriver
PRODUCT USE INFORMATION
Torque Specs:
Size Grade 5 Grade 8
5/16” 15 ft/lbs 20 ft/lbs
3/8” 30 ft/lbs 35 ft/lbs
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
6MM 5 ft/lbs 9 ft/lbs
8MM 18ft/lbs 23 ft/lbs
10MM 32ft/lbs 45ft/lbs
12MM 55ft/lbs 75ft/lbs
14MM 85ft/lbs 120ft/lbs
16MM 130ft/lbs 165ft/lbs
18MM 170ft/lbs 240ft/lbs
1746BOX1
Qty Part # Description
1 94003330 Front Cross Member
1 94003331 Rear Cross Member
1 94003320 Driver Front Bump Stop
1 94003321 Passenger Front Bump
Stop
2 90603415 Bump Stop
1 1746bag1 Cross Member Bag
1 1770bag9 Bump Stop Bag
Parts List
1746BOX3
Qty Part # Description
1 94003305 Passenger Diff Bracket
1 94003332 Driver Diff Bracket
1 94003335 Driver Steering Stop
1 94003336 Passenger Steering
Stop
1 94003338 Rear Brake Line
Bracket
2 94003339 E-Brake Bracket
1 9/16bag U-bolt Bag
1746BOX2
Qty Part # Description
1 94003333 Front Skid Plate
1 94003334 Rear Skid Plate
1746BOX4
Qty Part # Description
1 94003342 Driver Side Knuckle
1 94003343 Passenger Side
Knuckle
1 1746bag2 Diff Drop Bag
1 1746bag3 Rear Shock Bag
1 1746bag5 Rear Brake Line Bag
1 1746Bag6 Carrier Bearing Drop
Bag
2 658694 Rear Shocks
2 94003314 Sway Bar Bracket
2 94003312 Front Bump Stop Ext.
1 1770bag4 Sway Bar Bag
2 94003342 4” Strut Spacers
1 3/8studbag Press In Strut Studs
2 94003919 Rear Shock Brackets
4 90900900 Rear U-bolts
2 90909240 2” Rear Blocks
2 94003319 Axle Brake Line Bracket
2 94058000 Brake Line Bracket
2 94004415 Front Brake Line
Bracket
1746Bag1
2-9/16” x 5” bolts
2-9/16” nylocks
4-9/16” washers
2-3/4” x 4.5” bolts
2-3/4” nylocks
4-3/4” washers
1746Bag2
6-bushings
3-9/16” x 3/4” x 2.41” Sleeve
3-9/16” x 3.5” bolt
3-9/16” top lock
9-9/16” washer
3-14mm x 25mm bolt
6-3/8” x 1.25” bolt
6-3/8” washer
2-10mm nylock
2-10mm x 35mm bolt
1746Bag3
2-12mm x 35mm bolt
2-12mm x 65mm bolt
4-12mm flange lock
2-1.5” shock sleeve
2-1.25” shock sleeve
1746Bag5
5-1/4” x 3/4” bolt
10-1/4” washer
5-1/4” nuts
2-5/16” nylocks
2-5/16” x 3/4” bolt
2-3/8” nylock
4-3/8” washer
2-3/8” x 1” bolt
4-5/16” washer
1746Bag6
6-carrier bearing shims
2-hardened washers
2-10mm x 50mm bolts
1746Bag4
1-instruction sheet
1-warning to driver
2-N2.0 stickers
Kit Bags
1770Bag9
6-3/8” self tapping bolt
9/16Bag
8-9/16” nylocks
8-9/16” washers
1170Bag4
4-5/16” washers
4-3/8” nuts
4-3/8” lock washers
4-3/8” x 1” bolt
FRONT INSTALLATION
1. Jack up the front of the vehicle and support the vehicle with jack stands, so that the front wheels are off the ground
2. Remove the front tires/wheels. Using a 21mm deep well socket.
3. Remove the factory bolts holding on the skid plate with a 12mm socket and the six bolts holding the two bracket for
the radiator support and stock cross-member with a 17mm socket.
4. Remove the brake line bracket from the frame on the passenger side using a 12 mm socket.
5. Next remove the ABS bracket from the knuckle using a 12mm socket. See Photo 1.
6. Using a 10mm socket to remove the ABS bracket from the upper control arm. See Photo 2.
PHOTO 1
PHOTO 2
7. Next remove the ABS sensor from the knuckle using a 10mm socket.
8. Remove cotter pin from the outer tie rod end on the steering linkage. Using 19mm socket remove the nut. Using a
hammer hit on the side of the cast knuckle to allow the tie rod end to separate from the knuckle. Remove the linkage from the knuckle. Retain factory nut & cotter pin. See PHOTO 3.
9. Using a 17mm wrench, remove the sway bar bolts, allowing the sway bar to drop. Retain factory hardware.
10. Next using a 17mm wrench remove the brake caliper bolts and secure the caliper up out of the way. See PHOTO 4.
PHOTO 3
PHOTO 4
11. Remove the outer dust cap with a small flathead screwdriver and remove the axle nut with a 35mm socket. Retain
factory hardware. See Photo 5.
12. Using a 17mm wrench loosen the 4 bolts holding the hub
to the knuckle.
PHOTO 5
13. Remove the upper ball joint and the two lower ball joint
bolts using a 19mm socket or wrench. Strike the knuckle
on the side with a hammer to dislodge the taper lock of the
upper ball joint.
14. Remove the knuckle assembly from the truck and lay on a
work bench. Finish removing the 4 bolts holding the hub to
the knuckle.
15. Insert the factory hub and dust shield into the Rough
Country lifted knuckle and tighten with a 17mm wrench.
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