HIGH PRE LOAD r a 1 l jt11t llll ADJUSTER ANIL another hammer of slightly lighter weight as shown in Figure 4 35 3 Separate connecting rod from pitman arm 4 Loosen lash adjuster screw lock nut and turn screw out of gear case sufficiently to remove all high spot preload 5 At steering wheel gently rotate wheel to end of travel Turning wheel hard enough to bounce off end of travel can seriously damage internal parts of steering gear assembly When end of travel is reached rotate wheel back one full turn 6 Position tool No J 5178 as shown in Figure 4 36 and keeping barrel of tool as near 90 to center spoke as possible rotate wheel by pulling at ring of tool Note reading of scale necessary to keep wheel in motion this reading must be between 1 z and 3 4 lb A scale reading outside the range given requires readjustment of worm bearing pre load as follows l j FI t Fig 4 36 Checking Pre load with Tool J 5178 7 Loosen worm bearing adjuster lock nut and turn adjuster in proper direction to increase or decrease pre load as required turning adjuster to the right increases pre load Tighten adjuster lock nut and check adjustment with tool J 5178 as outlined in operation six Repeat until desired reading of 1 2 to 3 4 lb is obtained If there is a feeling of roughness or a wide variation of scale readings at different points during rotation of steering wheel gear should be disassembled as outlined in this section and inspected for worn or damaged parts High Point Pre Load Adjustment 1 With worm bearing pre load properly adjusted rotate steering gear to center of travel 21 z turns from stop 2 Turn lash adjusting screw into gear case until light contact is felt between sector gear and ball nut 3 While holding adjusting screw in position with screwdriver snug lock nut against gear case Position tool J 5178 as outlined in operation six of CORVAIR SHOP MANUAL