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Power Steering Pump - TM-5-4210-220-12_597
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TM-5-4210-220-12 Truck Firefighting: Powered Pumper: Foam and Water 500-GPM Capacity; Centrifugal Pump Power Takeoff Driven Manual
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REPAIR - TM-5-4210-220-12_599
TM 5-4210-220-12 4-25.  STEERING SYSTEM - Continued (6) Remove capscrews (11) and remove pump from engine bracket. (7) Remove  fittings  (12)  from  pump  if  new  pump  is  to  be  installed.    Plug  or  cover  the  ports  to  prevent contamination of the pump. INSPECTION (1) Inspect hoses, belts, and pump body.  Damaged or deteriorating parts must be replaced. (2) Inspect reusable hardware items with stripped or damaged threads must be replaced. (3) Clean  pump  fittings  (12)  thoroughly  and  inspect  for  damage  including  stripped  threads.    Replace  as required. INSTALLATION (1) Apply pipe sealant (item 22, Appendix E) to fittings (12).  Remove protective plugs from pump ports and install fittings. (2) Apply threadlock liquid (item 29, Appendix E) to capscrews (11) and install new pump (4).  Tighten to 35 ft lb (48 Nm). (3) Install hoses (1, 2 and 3). (4) Install  pulley  (10)  and  bushing  (9)  on  pump  shaft.    Be  sure  drive  key  is  installed  on  pump  shaft.    Install screws and washers (8).  Tighten evenly to 35 ft lb (48 Nm). (5) Install belts (7) and, while levering pump, tighten screws (5 and 6). (6) Check  belt  tension  approximately  midway  between  the  two  pulleys.    A  firm  push  with  the  thumb  should deflect each belt about 0.5 in. (13 mm).  Adjust position of pump as necessary. CAUTION To prevent damage to pump vanes, be sure power steering reservoir is refilled before starting engine. (7) Refill power steering reservoir with 10W/40 oil, (item 17, Appendix E).  (see LO 5-4210-220-12). (8) Start main engine and check hose connections for leaks and, if necessary, tighten fittings. (9) Turn the steering wheel fully left and fully right and make sure the response to turning is smooth and easy. (10) Stop  engine  and  recheck  belt  tension.    Readjust  pump  position  if  necessary  to  maintain  belt  tension  as detailed in step 6. 4-477

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