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Power Steering Gear - TM-5-4210-220-12_607
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REPAIR - TM-5-4210-220-12_609
TM 5-4210-220-12 4-25 STEERING SYSTEM - Continued (5) Use a hydraulic jack to support the rear cab cross member.  Place a maintenance trestle underneath the cross member to support it. (6) Remove capscrew and locknuts (9) and remove steering gear. (7) If  steering  gear  is  not  replaced  immediately,  Install  capscrews  and  locknuts  into  frame  and  handtighten only.  This will prevent inadvertent damage to cab if trestle is removed. INSPECTION . (1) Inspect steering gear and pitman arm for wear and damage.  A bent or damaged input shaft, output shaft, or pitman arm must be replaced. (2) Inspect steering gear fittings and hose end fittings for damage.  Replace defective components. INSTALLATION . (1) Install steering gear to truck frame using capscrews and locknuts (9).  Tighten nuts to 180 ft lb (245 Nm). (2) Jack up cab cross member and remove maintenance trestle.  Lower and remove jack. (3) Apply antiseize compound (item 3, Appendix E) to steering gear input shaft splines.  Install yoke (8) using screw (6) and new locknut (7).  Tighten nut to 40 ft lb (55 Nm). (4) Install hoses (1 and 2) in steering gear port fittings. (5) Refill power steering reservoir with oil as detailed in Lube Order LO 5-4210-220-12. (6) Install and adjust drag link to pitman arm as detailed in para. 4-25.5. (7) Start engine and check hose connections for leaks.  Tighten fittings if necessary. (8) Turn  steering  wheel  fully  right  and  fully  left.    After  a  couple  of  turns  the  steering  motion  should  become smooth. (9) Stop the engine and refill the reservoir to FULL on the dipstick. ADJUSTMENT. NOTE Steering gear adjustment consists of adjusting the relief valve plungers.  These are used to relieve power steering pressure at full left and right turns. (1) With the engine running, turn the steering wheel in one direction until a high-pressure hiss is heard or until the axle stops contact each other. 4-489

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