Rough-country 746.20 User Manual

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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.
PRODUCT USE INFORMATION
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 re-
sponsible 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 prod-
ucts.
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 vehi-
cle 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
92174600
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
05-12 TACOMA 4” Kit
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
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Summary of Contents

Page 1 - 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

Page 2

REAR INSTALLATION 1. Jack up the rear of the vehicle and support the vehicle with jack stands, so that the rear tires are off the ground 2. Remove

Page 3 - Kit Bags

12. On the driver side of the rear axle bolt the rear brake extension bracket to the axle using factory hardware and a 12mm wrench. Attach the factor

Page 4

POST INSTALLATION 1. Check and recheck all fasteners for proper torque. Check to ensure there is adequate clearance between all rotat-ing, mobile,

Page 5

Parts List Qty Part # Description 1 94003330 Front Cross Member 1 94003331 Rear Cross Member 1 94003320 Driver Front Bump Stop 1 94003321 P

Page 6

Kit Bags 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-bush

Page 7

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. R

Page 8

16. Place a jack or jack stand below the lower control arm and remove the top three strut nuts with a 14mm wrench. 17. Using a 19mm socket and wren

Page 9

26. Starting from the edge of the cam bolt plate on the back side of the rear cross-member make a mark at 3” and another mark at 12”. This is where t

Page 10

39. Using a 3” adjustable wrench, unscrew the bumpstops from the truck. Using the supplied 10mm x 35mm bolts in 1746bag2 attach the bumpstop extensio

Page 11

46. Install factory axle nut and tighten with a 35mm socket. Push in the factory cotter pin to secure nut. See Photo 23. 47. Using a 12mm wrench ins

Page 12 - MAINTENANCE INFORMATION

55. Repeat steps 39-54 on the driver side of the truck. 56. Align the front skid plate with the two passenger side bolt holes on the bottom of the f

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