Key Part Name Group No 1 RING Steering Gear Housing End 10 12 6 824 2 PLUG Steering Gear Housing End 6 824 3 SEAL Steering Gear Housing End Cover O Ring 10 12 I 6 825 4 RING Steering Gear Power Cylinder Piston 5 13 6 579 5 SEAL Piston Ring Back up O Ring 2 7 16 l D 5 13 6 579 6 PLUG Piston End 5 6 586 7 SCREW w Lockwasher Worming Bearing 5 6 586 8 CLAMP Ball Return Guide 5 6 843 9 GUIDE Ball Return 5 6 842 10 BALL Gear Worm 5 6 844 11 RACK PISTON Steering Gear 5 6 586 12 NUT Lash Adjuster 7 12 6 822 13 COVER ASM Housing Guide 7 6 807 14 SEAL Housing Side Cover 7 8 11 12 6 809 15 GEAR Pitman Shaft 8 6 850 I 16 SEAT Steering Gear Housing Hose 6 I 6 673 i 17 VALVE Housing 6 14 6 673 18 SPRING Housing Check Valve 6 14 6 673 19 CONNECTOR Hose Fitting to Hsg 9 32 l D x 31 32 0 D 6 14 6 673 20 RACE Thrust Bearing 9 6 835 21 BEARING Lower Thrust 9 N S 22 RACE Thrust Bearing 9 6 835 23 WORM Steering 5 N S 24 SEAL Stub Shaft 1 4 12 N S 25 SHAFT Steering Gear Pitman 1 6 850 26 BEARING Needle 1 3 4 O D 6 6 786 27 SEAL Pitman Shaft Oil 6 15 6 855 28 WASHER Pitman Shaft Seal Back Up 6 855 A 29 SEAL Pitman Shaft Oil Double Lip 6 12 15 6 855 30 WASHER Pitman Shaft Seal Back Up 6 12 15 6 855 31 RING Retaining 6 12 15 1 6 856 32 WASHER Pitman Arm 7 8 6 861 33 NUT Pitman Arm 7 8 14 6 861 34 SEAL Spool 1 4 12 N S 35 BODY Valve 1 N S I 36 BOLT Flange to Shaft Coupling 6 525 37 SEAL Hydraulic Valve 6 552 38 SPRING Spool Valve 6 552 39 5 SEAL Valve Body 1 4 12 N S 40 RING Valve Body 1 4 12 N S 41 RETAINER Adj Bearing 2 9 6 835 42 SPACER Thrust Bearing 2 9 N S 43 RACE Thrust Bearing 2 9 6 835 44 BEARING Valve Asm 2 9 6 835 45 RACE Thrust Bearing 2 9 V 6 835 46 SEAL Adj Plug Seal 2 3 12 6 840 47 CLAMP Ball Return 2 6 843 48 BEARING Upper End Plug Stud Shaft 2 6 826 49 SEAL Eng Plug Steel Shaft Oil 2 3 12 N S 50 SEAL Steel Shaft 2 3 12 6 840 51 RING Retaining 2 3 12 6 840 52 NUT Adjusting 2 1 4 20 6 832 I 53 COUPLING Steering Shaft 6 525 54 HOUSING Steering Gear 6 6 803 55 BOLT Housing Side Cover 5 6 7 8 11 12 15 6 809 7 he parts indibated with numbers are servioedin the followingpackages or units Some parts may be serviced in several different packages 1 6550 VAL VE ASM Steering Gear 9 6835 LOWER THRUST BEARING SER VICE KIT 2 6830 PL UG SER VICE ASM Adjuster 10 6825 SEAL SER VICE K 71 End Plug 3 6840 SEAL SER VICE K I 7 Adjusting Plug 11 6809 SEAL SER VICE K I TQ Hsg Side Cover 4 6 552 SEAL SER VICE KIT Valve ring 12 6 507 SEAL SERVICE K 71 Master 6 6 586 RACK PISTON NUT SERVICE ASM Steering Gear 13 6 579 SEAL SER VICE K I 7j Rack Piston 6 6803 HOUSING SERVICE ASM Ring 14 6673 VAL VE SERVICE K 71 Check 7 6 807 COVER SERVICE ASM Housing Side 16 6 855 SEAL SER VICE K I TQ Pitman Shaft 8 6850 GEAR SERVICE ASM Pitman Shaft 1956 75 POWER STEERING GEAR GM645 GM PARTS DIVISION GENERAL MOTORS CORPORATION BU CK 4OA I 5 35 6 000 GROUP