Rough-country 278.20 User Manual download pdf

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 knowl-

edge of disassemble/reassembly procedures as well as post installation checks must be known. Attempts to install this sys-

tem 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 the rear cover of

these instructions. 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 responsi-

ble for any product that is altered.

If question exist we will be happy to answer any questions concerning the design, func-

tion, and correct use of our products.

**Note** The electric power steering must be unplugged before any of the steering components are removed. Failure to do

so may cause damage to the electric power steering.

This kit is packaged as a leveling kit—raising the front 3.5” and the back 1.75”. If you desire a different look or if the vehicle

has a tool box or added weight in the rear, please consult with your sales representative about other block and u-bolt op-

tions.

This suspension system was developed using a 32 x 11.5 tire with factory wheels. Examples of tire sizes that can be used

are 285/75R17, 285/65R18, or 285/55R20. Note if wider tires are used, offset wheels will be required and trimming may be

required.

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

Tools Needed:

18MM Wrench

15MM Wrench

21MM Wrench

11MM Wrench

10MM Wrench

Floor Jack

Jack stands

Strut Compressor

Die Grinder

921275N200

2014 4WD GM 1500 3.5” FRONT

1.75” REAR LIFT 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 50ft/lbs 75ft/lbs

14MM 85ft/lbs 120ft/lbs

16MM 130ft/lbs 165ft/lbs

18MM 170ft/lbs 240ft/lbs

1 2 3 4 5 6 ... 15 16

Summary of Contents

Page 1 - 1.75” REAR LIFT KIT

Thank you for choosing Rough Country for your suspension needs. Rough Country recommends a certified technician install this system. In addition to t

Page 2

FRONT INSTALLATION 1. Park the vehicle on a level surface and chock the rear wheels. 2. Jack up the front of the vehicle. Place jack stands under t

Page 3

10. Using a 15mm wrench, remove the 2 bolts securing the lower strut mount to the lower control arm and remove the strut from the vehicle. Retain sto

Page 4

17. Insert factory hardware into the stock cross member and tighten with a 18mm socket and wrench. See Photo 13. 18. Place the strut in a strut comp

Page 5

28. Install the strut in the lower control arm using factory hardware and . See Photo 19. It may be necessary to jack up the lower control arm with a

Page 6

REAR INSTALLATION 1. Chock the front wheels. 2. Place a floor jack under the differential and jack up the rear of the vehicle. 3. Place jack stand

Page 7

Box Kit 1-Driver Side Control Arm 1-Pass Side Control Arm 2-Diff Brackets 1-Diff Lower Skid Plate 2-Strut Spacers 2-Preload Spacer 4

Page 8

Thank you for choosing Rough Country for your suspension needs. KIT CONTENT Dr. upper Control arm Strut spacers Pass. Upper control arm Lower skid pl

Page 9

FRONT INSTALLATION 1. Park the vehicle on a level surface and chock the rear wheels. 2. Jack up the front of the vehicle. Place jack stands under t

Page 10

10. Using a 15mm wrench, remove the 2 bolts securing the lower strut mount to the lower control arm and remove the strut from the vehicle. Retain sto

Page 11

17. Insert factory hardware into the stock cross member and tighten with a 18mm socket and wrench. See Photo 13. 18. Place the strut in a strut comp

Page 12

28. Install the strut in the lower control arm using factory hardware and . See Photo 19. It may be necessary to jack up the lower control arm with a

Page 13

REAR INSTALLATION 1. Chock the front wheels. 2. Place a floor jack under the differential and jack up the rear of the vehicle. 3. Place jack stand

Page 14

Box Kit 1-Driver Side Control Arm 1-Pass Side Control Arm 2-Diff Brackets 1-Diff Lower Skid Plate 2-Strut Spacers 2-Preload Spacer 4

Page 15

Thank you for choosing Rough Country for your suspension needs. KIT CONTENT Dr. upper Control arm Strut spacers Pass. Upper control arm Lower skid pl

Page 16 - KIT CONTENT

Thank you for choosing Rough Country for your suspension needs. Rough Country recommends a certified technician install this system. In addition to

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Rough-country 278.20 User Manual

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