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Assembly - TM-5-4210-229-14P_463
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TM-5-4210-229-14P Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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Assembly. - TM-5-4210-229-14P_465
TM5-4210-229-14&P 6-15. TRANSMISSION REPAIR (Continued). clearance  is  still  excessive  after  all  eight plates     and     the     backplate     have     been replaced, a thicker piston (229) is required. (g)   If the clearance is insufficient (first step of gauge will not fit), a thinner piston (229) is required. (h)   Install  the  piston  return  spring  (224)  and spring   retainer   (222).   Using   compressor tool   and   compressor   base,   depress   the spring  retainer  (222).  Install  the  snapring (223) to retain the spring retainer (222). (i)    Install the bearing race (221) outer lip first, onto  the  rear  hub  of  the  clutch  housing. Use  oil-soluble  grease  (Appendix  D,  Item 21)  to  retain  the  races  during  subsequent assembly. g.    Center support assembly repair. (1)   Disassembly. (a)   Place     center     support     assembly     (233) vertically (upright), on the work table. (e)   If parts replacement is necessary, disassemble   the   two   piston   assemblies. Cut the self-locking retainer rings (243 and 244)    to    prevent    damaging    the    piston projections,     Remove     four     self     locking retainer   rings   (243   and   244),   a   retainer (245  or  246)  and  twenty  springs  (247  or 248) from each piston (237 or 238). (f)    Remove  two  sealrings  (249)  from  the  hub of the center support assembly. (g)   If the bushing (250) in the center support is worn   or   damaged,   collapse   the   bushing (250)  inward  at  the  bushings  splitline  and remove. (h)   Remove the ball (25 1) freed by removing the   bushing   (250)   from   the   hub   of   the support (236). (i)    Determine the serviceability of the sealring grooves on the center support hub. Insert, do not force, gauge into the groove on the center  support  hub.  Rotate  the  gauge  360 degrees around the hub. If the gauge does not  rotate  freely,  the  support  is  damaged and should be replaced. (b)   Remove  oil  filter  (234)  and  sealring  (235) from center support (236). (c)   Remove     pistons     (237     and     238)     with attached parts. (d)   Remove the inner sealrings (239 and 240) and   outer   sealrings   (241   and   242)   from each piston. 6-71

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