User manual BENDIX COMPACT 500

[. . . ] ® COMPACT 500 INTEGRAL HYDRAULIC POWER STEERING GEAR FOR FORD MOTOR CO. DESCRIPTION The Compact 500 Hydraulic Power Steering gear is designed for heavy duty vehicles with front axle weight ratings of up to 15, 000 lbs. It is an integral power steering gear incorporating the mechanical and hydraulic actuation and control components in a single cast housing which serves as the power cylinder. The vehicles steering column is coupled to the gear at the input shaft which transmits steering effort through a recirculating ball screw and piston nut. [. . . ] (See Figure 23) NOTE: Do not remove the outer bearing race if in good condition. If it is necessary to remove the outer bearing race, use tool 297647 and drive the race into the housing(45) until it is free. FIGURE 22 13 41 40 39 FIGURE 24 SIDE COVER DISASSEMBLY 15. The side cover MUST BE replaced if it is determined that the bearing requires replacement. The side cover is supplied with the bearing factory installed. VALVE BODY AND SPINDLE DISASSEMBLY 16. With a drift punch unblock the safety point between valve nut(33) and valve body(16). Loosen and remove the valve nut with spanner wrench 297661 and remove the spindle assembly(34), the ball race(28), the ball cage(30), and the seventeen bearing balls. (See Figure 25) 33 28 34 30 29 17 16 TOOL 297678 FIGURE 25 14 14 16 15 16 11 12 10 9 8 7 6 5 43 FIGURE 26 17. Remove the inner O-ring(17) and the nylon seal ring(18) from the valve body(16). NOTE: Do not remove the inner ball race(28) from the valve body(16) if it is in good condition. Then remove the dust seal(13), snap ring(14) and the seal(15) from the valve body(16). The power steering valve body(16) contains a pressure relief and safety valve. Loosen and remove the plug(3) with a 26mm wrench and the corresponding seal washer(4). CAUTION: Located in the plug are the corresponding maximum pressure adjusting shims(5). (See Figure 27 & 28) Proper reinstallation of the shims is critical to maintain correct relief pressure. With a wide blade screwdriver loosen and remove the valve seat(9) and its copper seal washer(10) as well as the spring(11) and the ball(12) of the bypass valve. of the valve body or the valve seat(9) with the screwdriver. 15 FIGURE 27 OUTPUT SHAFT DISASSEMBLY 20. Remove the snap ring(38), the adjusting screw spacer(37) and the adjusting screw(36) from output shaft. (See Figure 29) 3 45 6 7 8 9 10 11 12 SPINDLE DISASSEMBLY CAUTION: Do not attempt disassembly of the spindle assembly which contains the rotary valve. CLEANING AND INSPECTION CLEANING Wash all parts individually in clean solvent and dry thoroughly. INSPECTION Visually inspect all parts carefully paying particular attention to: 1. Bearings and bearing surfaces including inner and outer races and balls. NOTE: Minor scuffing of the piston exterior and housing bore can be considered normal. [. . . ] In order to test the steering gear for internal leakage it is necessary to TEMPORARILY adjust the setting of the power steering gear pressure relief valve above that of the power steering pump relief valve. To accomplish this install the appendix pressure relief valve test plug assembly 106773. With the engine stopped, remove the pressure relief valve plug (3) sealing washer (4) adjusting shims (5) and spring(6). Install the sealing washer on the test plug assembly (106773) then install the test plug assembly in the power steering gear valve body. [. . . ]