Quantcast Assembly - TM-5-4210-229-14P_460

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Forward clutch and turbine shaft repair.
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TM-5-4210-229-14P Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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Assembly (cont) - TM-5-4210-229-14P_461
TM5-4210-229-14&P 6-15. TRANSMISSION REPAIR (Continued). (d)   Remove the snapring (199) that retains the fourth    clutch    hub    (200)    in    the    forward clutch  housing  (201).  Remove  the  fourth clutch   hub   (200)   and   the   forward   clutch hub (202) from the housing. (e)   Remove    thrust    bearing    race    assembly (203), the bearing assembly may adhere to either  forward  clutch  hub  (202)  or  the  hub of  forward  clutch  housing  (201).  Remove five  internal-splined  plates  (204)  and  five external    tanged    plates    (205)    from    the forward clutch housing (201). (f)    Place the housing and shaft assembly in a press.  Using  compressor  tool,  depress  the spring    retainer    (206)    and    remove    the retainer snapring (207). Remove the retainer   (206)   piston   return   spring   (208) and  piston  (209).  Remove  sealring  (210) from  the  piston  (209)  and  sealring  (211) from the housing (201). (g)   Remove    balls    (212)    from    housing    and shaft assembly (213) only if replacement is necessary. If necessary, clear the bores of staked metal and remove the balls. (h)   Remove pin (214), plug (215), valve spring (216)    and    valve    (217)    from    the    outer circumference   of   forward   clutch   housing assembly (213). (i)    Press   turbine   shaft   (218)   from   housing (201) only if replacement is necessary. To press the shaft from the housing, place the assembly,   shaft   downward,   in   a   press. Support  the  assembly  at  the  front  hub  of the housing. (2)   Assembly (a)   If  turbine  shaft  (218)  was  removed,  press the new one to a firm seat against housing (201).    To    ensure    a    satisfactory    fit,    a minimum   of   250   lb   (1112   N)   press   out force is required. The total runout must be within 0.005 inch (0.127 mm). (b)   Inspect  centrifugal  valve  parts  (214,  215, 216   and   217)   for   damage.   If   damaged, replace  with  new  parts.  Be  sure  the  color code  of  any  new  part  is  the  same  as  the part replaced. All three parts (214,215, and 216) must be identically coded. (c)   Install  centrifugal  valve  (217),  conical  end first, into its bore in forward clutch housing (201). Place spring (216) inside the valve. Compress  the  spring  with  plug  (215)  and retain the spring and plug with pin (214). (d)   If balls (212) were removed, replace them. Place   each   ball   in   its   bore.   Stake   each bore at three equally spaced places. Each bore  is  properly  staked  when  the  ball  has at    least    0.040    inch    (1.02    mm)    axial movement and when the ball is retained by the  stakes  when  a  30  lb  (133  N)  load  is applied against the ball. (e)   Before completing the assembly, the clutch clearance must be established. One method  is  by  direct  measurement  and  is outlined in steps (f) through (k). CAUTION If  either  piston  sealring  (210  or  211)  is installed incorrectly, the forward clutch will not operate properly. (f)    Position    the    clutch    housing    and    shaft assembly (213) shaft downward, on a work table.    Lubricate    and    install    the    piston sealrings  (210  and  211)  into  their  grooves in  the  housing  hub  and  piston.  Make  sure the    sealring    lips    face    toward    the    oil pressure   side   of   the   piston.   Install   the piston (209) into the housing. (g)   Alternately  install  the  five  external-tanged plates (205) and five internal-splined plates (204).  Install  the  fourth  clutch  driving  hub (200) and retain it with the snapring (199). 6-67

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