Quantcast Assembly - TM-5-4210-229-14P_463

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Fourth clutch repair
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TM-5-4210-229-14P Truck Firefiighting 1000 GPM Multipurpose Model 2500L Manual
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Center support assembly repair.
TM5-4210-229-14&P 6-15. TRANSMISSION REPAIR (Continued). (c)   Remove  the  eight  clutch  plates  (227  and 228)   and   piston   (229).   Remove   sealring (230)  from  the  piston  and  sealring  (231) from fourth clutch housing (220). (d)   Remove    balls    (232)    from    fourth    clutch housing     (220)     only     if     replacement     is necessary. If necessary, clear the affected bores   of   staked   metal   and   remove   the balls (232). (2)   Assembly. (a)   If balls (232) 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  301b  (133  N)  load  is applied against the ball. (b)   Before completing the assembly, the clutch clearance must be established. One method  is  by  direct  measurement  and  is outlined in (c) through (g). CAUTION If  either  piston  sealring  (230  or  231)  is installed  incorrectly,  the  fourth  clutch will not operate properly. (c)   Position the fourth clutch housing, rear hub downward,  on  a  work  table.  Lubricate  and install  the  piston  sealrings  (230  and  231) into  their  grooves  in  the  housing  hub  and piston.   Make   sure   the   sealring   lips   face toward the oil pressure side of the piston. (d) Install the piston (229) into the fourth clutch housing. Alternately install the four external-tanged     plates     (228)     and     four internal-splined    plates    (227).    Install    the backplate    (226)    and    retain    it    with    the snaprings (225). (e)   Using fourth clutch clearance gauge, check the  clearance  between  the  backplate  and the first internal-splined plate. The prescribed  clearance  for  the  fourch  clutch is    0.064-0.125    inch    (1.625-3.175    mm). When  this  clearance  is  achieved,  the  first step   of   the   gauge   will   fit   between   the backplate  (226)  and  the  clutch  plate;  the second step will not. (f)    If the clearance is excessive (second step of  gauge  fits),  replace  the  thinner  clutch plates with new plates. If the 6-70

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