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Rough Country
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287
User Manual
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Rough Country 287 User Manual

92128600
07-UP TAHOE/YUKON/SUB 7.5” KIT
Thank you for choosing Rough Country for your suspension needs. We appreciate your business!!
This kit will not fit vehicles equipped with electric steering or trucks with factory auto leveling or auto ride systems.
Important note: Please refer to the instructions on the last page for trimming the tie rods. For alignment purposes, it will be necessary to trim/shorten the tie rod end to allow the front end alignment to be set properly.
Rough Country recommends a certified technician install this system. In addition to these instructions, professional knowl­edge of disassemble/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.
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. We will be happy to answer any questions concerning the design, function, and correct use of our products.
This kit is packaged as a leveling kit—raising the front 7 1/2” and the rear 6”.
Due to differences in manufacturing, dimension and inflated measurements, tire and wheel combinations should be test fit prior to installation. For this application we recommend a 18” or larger wheel not to exceed 9” in width. When using a 18” wheel backspacing should be maximum of 5.5” and a minimum 5.0” . With a 20” or larger wheel backspacing should be a maximum of 6.0” and a min of 5.5”. Additionally a quality tire of radial design is recommended, not exceeding 35” tall and
12.5” wide. Please note that use of a 35” x 12.5” tire may require modification to the front valance.
Optional kicker Bars Part #1262 are available for this kit. Please contact you local Rough Country Dealer for infor­mation.
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 life.
We hope installing your Rough Country lift kit is a positive experience. Please note that variations in construction and assembly in the vehicle manufacturing process will virtually ensure that some parts may seem difficult to install. Addi­tionally, the current trend in manufacturing of vehicles re­sults in a frame that is highly flexible and may shift slightly on disassembly prior to installation. The use of pry bars and tapered punches for alignment is considered normal and usually does not indicate a faulty product. However, if you are uncertain about some aspect of the installation process, please feel free to call our tech support department at 800­222-7023. We do not recommend that you modify the Rough Country parts in any way as this will void any warranty ex­pressed or implied.
PRODUCT USE INFORMATION
NOTICE TO DEALER AND VEHICLE OWNER
KIT COMPONENTS
1264Box1 Front Cross Member
Rear Cross Member
1264Box3 Driver Knuckle
Pass Knuckle
1209Box1
Front Strut Spacers Driver Diff Bracket Pass Diff Bracket Skid Plate Sway Bar Drop Bracket CV Spacers Front Brake Line Brackets 3/8 Stud Bag 1264Bag1 1264Bag2
1209Box2
Rear Coil Spring Bump Stops Driver Rear Shock Bracket Pass Rear Shock Bracket Sway Bar Links Track Bar Bracket Brake Line Bracket 1280Bag1
1286Box1
Coil spring spacer Spacer washer 1286Bag1
This kit is packaged in 5 boxes. Please confirm that you have all the needed parts and know where they go prior to beginning installation.
Front Cross Member 5/8” X 4 1/2” Bolt (2) 5/8” Nuts (2) 5/8” Flat Washers (4) Rear Cross Member 5/8” x 5 1/2”Bolt (2) 5/8” Lock Nuts (2) 5/8” Flat Washers (4) Front CV Axle Spacers 10mm x 65mm SHCS Bolt (12) Driver Side Diff. Drop Bracket 12mm x 35mm Bolt (2) 12mm Flange Nut (2) 12mm Washer (2)
Pas Side Differential Brkt
12mm x 45mm Bolt (2) 12mm Flange Nut (2) 12mm Washer (2)
Lower Strut to Ctrl Arm Mt
10mm x 55mm Bolt (4) 10mm Lock Nuts (4) 10mm Washers (8) Sway Bar Bracket 10mm x 35mm Bolt (4) 10mm Lock Nuts (4) 10mm Lock Washer (4) 10mm Washers (8)
Frt & Rr Brake Line Brackets 5/16” x 3/4” Bolt (4)
5/16” Nylon Lock Nut (4) 5/16” Washer (8)
Skid Plate Installation
3/8” x 1” Bolt (4) 3/8” Lock Washer (4) 3/8” Flat Washer (4)
Rear Spring Spacer 3/8” x 3 3/4” Bolt (2) 3/8” Flangelock Spring Spacer Washers Rear Shock Brackets 5/8” x 1.5” Bolt (2) 5/8” Lock Nut (2) 5/8” Washers(4) 14mm x 75mm Bolts (2) 14mm Nylocks (2) 14mm Washers (4) Rear Sway Bar Links 12mm x 65mm Bolts (2) 12mm Flangelocks (2) 12mm Washers (2) Sleeves (4) Brake Line Bracket 5/16” x 1 1/4” Bolt 5/16” Flange Lock Nut Track Bar Bracket Sleeve .562 x .750 x 1.75 9/16” x 3 1/2” Bolt 9/16” Lock Nut 9/16” Washer (2) 7/16” x 1” Bolt (2) 7/16” Nylock (2) 7/16” Washers (4) Rear Bump Stops 3/8” x 1” Self Tapping Bolt (4) Rear Coil Spacers 3/8” x 2.25” Bolts (2) 3/8” Flange Nuts (2)
CAD DRAWING SHOWING KIT COMPONENTS AND INSTALLED LOCATIONS
DIAGRAM SHOWN WITH OPTIONAL KICKER BARS PART #1262
INSTALLED
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
Tools Needed:
Floor Jack /Jack Stands 8mm Allen Socket 10mm socket /wrench 11mm socket /wrench 13 mm socket/wrench 15mm socket / wrench 17mm socket/wrench 18mm socket /wrench 21mm socket /wrench 22mm socket /wrench 24mm socket /wrench 19mm socket /wrench 35mm socket 9/16 socket /wrench Torsion bar Tool Reciprocating Saw Drill 11/16” Drill Bit Hand Grinder Thread Locker
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 the frame rails and lower onto jack stands letting the front sus­pension hang.
3. Remove the tires and wheels. Remove the upper and lower factory skid plates using a 15mm wrench. Retain factory hardware and front skid plate for reuse.
4. Using a 21mm wrench, remove the tie-rod nut as shown in Photo 1. Strike the side of the mount to dislodge the tie rod end. Remove from the knuckle.
5. Remove the sensor wire from the plastic clip. Remove the bracket from the control arm using a 10mm wrench. See
Photo 2.
Photo 1
6. Remove and unplug the ABS sensor wire from the frame as shown in Photo 3 and remove the two bolts holding brake
caliper to the factory knuckle using a 18mm wrench. Remove the caliper assembly from the knuckle and hang securely out of the way. Do not hang the caliper by the brake hose.
7. Remove the axle nut from the knuckle as shown in Photo 4 using a 35mm socket. Retain the hardware for reuse.
Photo 3
Photo 2
Photo 4
8. Using a 18mm wrench, remove the upper strut nuts as shown in Photo 5. Retain factory hardware for reuse.
9. Using a 15mm wrench, remove the 2 bolts securing the lower strut as shown in Photo 6, to the lower control arm and
remove the strut from the vehicle. Remove and discard the factory lower retainer clips. New hardware will be used.
Photo 5
Photo 6
10. Remove the sway bar & end links from the lower control arm as shown in Photo 7 using a 15mm wrench.
11. Remove the sway bar from the frame as shown in Photo 8 using a 10mm wrench. Retain all hardware for reuse.
Photo 7
12. Using a 15mm wrench, remove the 6 axle shaft bolts from the differential and remove from the knuckle. Repeat on op-
posite side.
13. Remove the upper and lower ball joint from knuckle using a 18mm wrench and 24mm on the lower. Upper shown in
Photo 9. Strike the knuckle as shown to dislodge the ball joint. Separate the upper control and lower control arm from the knuckle and remove the knuckle and the lower control arms from the vehicle.
14. Mark location of alignment cams on upper control arms to allow reinstallation of stock arm to the same position. Using
a 21mm wrench and 21mm socket, remove the upper control arms from the vehicle. See Photo 10. Retain the hard­ware for reuse.
Photo 9
Photo 8
Photo 10
15. Cut the bump stop from the upper control arm mount on the passenger and driver side as shown in Photo 11 using a
reciprocating saw. Passenger side shown.
16. After the bump stop has been cut from the control arm mount, grind and apply paint to the cut surface to prevent rust-
ing. See Photo 12. Reinstall the factory control arm in the factory location using the factory hardware. Tighten using a 21mm Socket / wrench. Be sure to use the marks made earlier for alignment reference.
Photo 11 Photo 12
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