TM 10-3930-669-34 9-2. PLANETARY HUB REPLACEMENT/REPAIR (CONT). NOTE The    depth    difference    between    the planetary  hub  assembly  and  the  axle housing  must  be  filled  with    v  shims to   within   a   tolerance   of   ±0.0008   in. (±0.020 mm). (5) Using a depth gauge, measure the distance from the face of axle housing (8) to the face  of  outer bearing   (13)   of   wheel   hub   (4).      Record   this measurement as Distance A. (6) Using a depth gauge, measure the distance from the  face  of  the  planetary  hub  assembly  (11)  to the    bearing    contact    surface.          Record     this measurement as Distance B. (7) Subtract Distance B from Distance A to determine  the  shim  thickness  required.    Record this difference as Distance C. (8) Using a micrometer to measure each shim (12), add shims together until the combined thickness equals Distance C ±0.0008 in.  (±0.020 mm). 9-10