TM 10-3930-671-24 Inspection All   transaxle   components   should   be   closely   inspected after    cleaning    and    before    reassembly,    to    determine which require replacement.  Check each part carefully for abnormal  or  excessive  wear  and  damage  to  determine reuse or replacement. Careful   and   complete   inspection   of   all   parts   is   very important.    Replacement  of  all  parts  showing  indication of   wear,   overstressing   or   damage   will   save   time   and money at a later date. In General: Inspect steel parts for notches, visible steps or grooves. Look for scuffing, deformation or discoloration related to improper lubrication. Inspect gear teeth for signs of excessive wear, pitting or cracking    along    contact    lines.        Check    tooth    contact pattern. Inspect machined surfaces of cast or malleable parts for cracks, scoring and wear.  Look for elongation of drilled holes, wear on machined surfaces and nicks or burrs in mating surfaces. Inspect  fasteners  for  rounded  heads,  bends,  cracks  or damaged threads. All  housings  should  be  inspected  for  cracks  or  leaks, loose studs or cross-threaded holes. Any  damage  which  affects  the  alignment  or  structural integrity of the housing requires replacement.  Repair by welding or straightening should not be attempted. This   process   can   affect   the   housing   metallurgy   and cause it to fail completely when under load. Repair and Replacement Replace lower-cost parts such as thrust washers, seals, etc., that protect the transaxle from premature wear and do not add greatly to the cost of rebuild. Replace heavily worn but unbroken parts. Steel parts such as shafts or gears are not repairable. If worn or damaged, they should be replaced, along with mating parts as necessary. Seals     and     washers     should     be     routinely     replaced. Fasteners   with   self-locking   patches   may   be   reused   if secured with several drops of Loctite #277. Transaxle housing repairs are limited to removal of nicks or    burrs    on    machined    surfaces    or    replacement    of damaged studs. Since the cost of a new part is generally a small fraction of  the  total  cost  of  downtime  and  labor,  avoid  reusing  a questionable  part  which  could  lead  to  additional  repairs and  expense  soon  after  initial  reassembly.    To  aid  in determining  the  reuse  or  replacement  of  any  transaxle part,   consideration   should   also   be   given   to   the   unit’s history, hours of use, application, etc. Recommended   inspection   procedures   are   provided   in the following checklist. F-342