Technical Reference Section Orders: 1-888-steer-us • Tech support: 1-307-472-0550 • Fax: 1-307-235-1551 • e-mail: [email protected] Basic Rack and Pinion Tech (pages 64-79) Configuring a Rack for Your Race Car Rack length, Type, Pinion location, Stroke, Ratio ......................................................................................................................... 64 Rack and Pinion Installation for Road Racing Lubrication ................................................................................................................................................................................... 65 Mounting various rack types ........................................................................................................................................................ 65 Connecting power steering hoses ................................................................................................................................................ 66 Adjusting bump steer with spacers ............................................................................................................................................. 66 Rack and Pinion Installation for Oval Track Racing Lubrication ................................................................................................................................................................................... 67 Mounting various rack types ........................................................................................................................................................ 67 Adjusting tie rods ........................................................................................................................................................................ 68 Connecting power steering hoses ................................................................................................................................................ 68 Adjusting bump steer with spacers ............................................................................................................................................. 68 Toe and bump steer geometry ..................................................................................................................................................... 69 Ackermann geometry (making it turn left) .................................................................................................................................. 72 Inspection and maintenance ........................................................................................................................................................ 75 Identifying the rack ratio ............................................................................................................................................................. 75 Changing ratios (pinion assemblies) ............................................................................................................................................ 75 Replacing rack bushings .............................................................................................................................................................. 76 Discussion of steering ratios ........................................................................................................................................................ 77 Size of the steering wheel ............................................................................................................................................................ 78 Typical applications of steering ratios .......................................................................................................................................... 78 Power Steering System Tech (pages 80-99) Power Steering Setup and Service (Refer also to the Plumbing Schematic on page 122) Mounting a rack with an integral servo ....................................................................................................................................... 80 Mounting a rack with a remote servo .......................................................................................................................................... 80 U-joint angles and phasing .......................................................................................................................................................... 80 Hose connections ......................................................................................................................................................................... 81 Reservoirs .................................................................................................................................................................................... 82 Coolers ......................................................................................................................................................................................... 82 Fluid ............................................................................................................................................................................................ 82 Initial checkout in the car ............................................................................................................................................................ 83 Adjusting the directional bias ............................................................................................................................................... 83 Changing the system pressure .............................................................................................................................................. 83 Changing the response curve ............................................................................................................................................... 84 How power steering works .......................................................................................................................................................... 86 Pumps .......................................................................................................................................................................................... 88 Horsepower consumption ............................................................................................................................................................ 90 Servo repair ................................................................................................................................................................................. 91 Cylinder installation..................................................................................................................................................................... 94 Cylinder repair ............................................................................................................................................................................. 95 Troubleshooting ................................................................................................................................................................... 95 Steering Column Tech (pages 100-105) Fabrication Attaching universal joints .......................................................................................................................................................... 100 Making up splined shafts ........................................................................................................................................................... 100 Installation Installing an SCA827 ................................................................................................................................................................. 101 Installing an SCA500 ................................................................................................................................................................. 102 Measurements to take when ordering........................................................................................................................................ 103 Steering wheel installation on quick release hub ....................................................................................................................... 104 Steering columns and safety regulations ................................................................................................................................... 105 Installation Drawings (pages 106-122) Illustrated Parts Breakdowns and Parts Lists Type G rack and pinion .............................................................................................................................................................. 106 Type K rack and pinion .............................................................................................................................................................. 108 Type KR rack and pinion ............................................................................................................................................................ 110 VA845/850/855/860 servo ......................................................................................................................................................... 112 G150 cylinder assembly ............................................................................................................................................................