background image

INSTALLATION INSTRUCTION

 

89505

 

Rev C 

Rancho Suspension Systems

:

 

RS66505B  — 2018-2015 Ford F150 4WD 4.5” Kit 

EXCLUDES: Models equipped with 4A (4WD Auto), AWD models, SVT Raptor 
Requires replacement Rancho shock absorbers and replacement wheels 

(Fits 18” and up OE wheels and spare with OE TIRES ONLY) 

See page 4 

 

 
 
 
 
 

 

 
 
 
 
 
 

 WARNING 

Carefully read, understand and follow the instructions provided in this manual, and keep it in a safe place for future reference. If you have any doubt 
whatsoever regarding the installation or maintenance of your Rancho suspension system, please see your retailer for assistance or advice. Failure to follow 
the warnings and instructions provided herein can result in the failure of the suspension system, or can cause you to lose control of your vehicle, resulting 
in an accident, severe personal injury or death. 

These instructions should remain in the vehicle glove box for future reference. 

Summary of Contents for RS66505B

Page 1: ...the instructions provided in this manual and keep it in a safe place for future reference If you have any doubt whatsoever regarding the installationor maintenance ofyour Rancho suspension system plea...

Page 2: ...and horse play are careless acts that can result in an error in installation and or serious injury 7 Install only tires approved by the United States Department of Transportation DOT approved Make sur...

Page 3: ...ber or urethane bushings should be tightened with the vehicle at normal ride height unless otherwise specified This will prevent premature failure of the bushing and maintain ride comfort M Some of th...

Page 4: ...y Jack Stands Wheel Chocks wooden blocks Hydraulic Floor Jack File Hammer Wire Brush to clean bracket mounting surfaces Black Enamel Paint Silicone Spray Lubricant Tape Measure Safety Glasses Wear saf...

Page 5: ...Assy Spacer Hardware 1 RS77035 HHCS M12 1 75X70MM 4 RS7915 Washer M12 4 15 RS740017 U Bolt 9 16 18 X 3 16 X 12 4 ITEM PART DESCRIPTION QTY 16 RS15104 Winged Spacer Block 2 RS860837 Sub Assy Hdwr Box...

Page 6: ...remove the front splash shields and or skid plates Remove splash shield brackets from side of frame rails See Illustration 4 and Illustration 5 4 Hold the hex stud and remove the nut attaching the sw...

Page 7: ...llustration 8 6 Mark position of alignment cams if equipped and loosen all four lower control arm pivot bolts 7 Remove the nut from the outer tie rod stud Using Ford Service tool 204 592 separate tie...

Page 8: ...th a floor jack Illustration 12 7 Loosen all three differential mounting bolts See Illustration 12 Note A plastic shield covering the steering rack may need to be removed to access bolt This shield is...

Page 9: ...iver side crossmember bracket Connect the lines on the top of the bracket providing a minimum of 6 clearance See Illustration 16 Illustration 16 4 Using a die grinder and Sawzall follow the line and c...

Page 10: ...e all differential mounting hardware to 85 ft lbs six bolts 13 Attach the lower control arm to the subframe with the cam bolts and hardware from kit RS860838 Insert front alignment cam bolts from fron...

Page 11: ...See Illustration 23 3 Remove the upper shock rod mounting nut Slide the shock absorber out of the spring assembly 4 Insert new shock absorber into spring assembly Use index marks to align shock with t...

Page 12: ...S176754 with the original bolts Tighten the bolts to 129 ft lbs 3 Align vacuum port upward and attach the integrated wheel end to the knuckle with the original hardware Tighten the bolts to 11 ft lbs...

Page 13: ...end 2 Attach the dust shield with the original hardware Tighten the bolts to 12 ft lbs 3 Install the right brake rotor on the passenger side wheel hub 4 Install the brake caliper over the rotor Attach...

Page 14: ...ompletely left then right Verify adequate tire wheel and ABS brake and vacuum line clearance and length Illustration 31 6 Lower vehicle to ground Tighten the lug nuts to 150 ft lbs 7 Align the cam bol...

Page 15: ...LOCK INSTALLATION RS66505B 4 Box 4 of 4 Riser Blocks RS15104 U Bolts RS740017 Hardware from Sub Assy RS860152 1 Support the rear axle assembly with a floor jack 2 Remove both rear shock absorbers Do n...

Page 16: ...rop Bracket RS176748 Hardware from Sub Assy RS860787 1 Attach rear brake hose drop bracket RS176314 to the frame with the original bolt Tighten the bolt to 12 ft lbs See Illustration 36 Illustration 3...

Page 17: ...nt wheels completely left then right Verify adequate tire wheel and brake hose clearance Inspect steering and suspension for tightness and proper operation 2 With the suspension at maximum extension f...

Page 18: ...Bracket 12 ft lbs Sway Bar Drop Bracket RS176746B 35 ft lbs Sway Bar End Link 59 ft lbs Wheel Lug Nuts 150 ft lbs Rear Components Brake Hose Drop Bracket RS176314 12 ft lbs Parking Brake Cable Drop B...

Page 19: ...19 Rancho Technical Department 1 734 384 7804...

Reviews: