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Fig.  20  Wrench Torque Chart and Diagram
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TM-5-4210-230-14P-1 Aerial Ladder Fire Fighting Truck Manual
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Fig.  28  Assembled Gauge in Position
TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 If the pinion radial or straddle bearing was removed from the end of the pinion during the disassembly, the bearing should  be  reinstalled  at  this  time.    Press  the  radial  bearing onto the end of pinion and stake with a blunt point punch, as shown  in  Fig.    24,  in  six  equidistant  places.  It  is  suggested that  for  locating  punch  positions  for  staking,  the  end  of  the pinion  be  painted  with  Prussian  Blue  and  a  circle  be  scribed on  end  of  pinion  about  3.175  mm  (1/8")  in  from  the  pinion circumference.  When staking the bearing, be careful to make the    depth    of    the    indentations    or    stake    points    uniform. Otherwise,  the  bearing  might  be  damaged.    Deep  punch  or stake  marks  are  not  necessary.    Apply  the  staking  operation at  opposite  sides  of  the  pinion  end  until  all  stake  points  are obtained. NOTE Smaller  pinions  having  the  straddle  bearings are staked in four places only.  Where special staking tools are available, they can be used; otherwise,  the  use  of  a  blunt  or  round-nose punch is satisfactory. Fig.  24  Staking Pinion Straddle Bearing ESTABLISH NOMINAL DIMENSION The  pinion  setting  gauge  (SE-1065)  is  a  precision gauge designed for locating the pinion as it meshes with the ring  gear  to  the  correct  nominal  dimension  in  the  shortest possible time.  A step plate and bracket, which are a part of the   set,   are   used   whenever   hypoid   type   gears   are   to   be adjusted.      Essentially   the   pinion   setting   gauge   is   a   direct reading depth micrometer mounted in an arbor.  The span of the  micrometer  is  50-75  mm  (2"  to  3"),  but  extensions  are provided with the kit to increase the reach.  Two sleeves which hold  adapter  discs  slip  over  the  ends  of  the  arbor.    Adapter discs are held on the sleeves by knurled nuts.  When installed in  the  differential  case,  the  pinion  setting  gauge  enables  the mechanic  to  measure  the  distance  from  the  face  or  finished end of the installed pinion to the centerline of the ring gear or cross  shaft.    The  measurement  which  the  mechanic  reads should agree with the nominal dimension, which can be found in   the   axle   specifications,   or   which   in   some   instances   is stamped or etched on the pinion itself.  Usually there is a plus or minus correction also stamped on the pinion, Fig.  25, and this also must be figured in with the nominal dimension. Fig.  25  Location of Pinion Setting Markings The  procedure  for  establishing  the  correct  nominal dimension by means of the pinion setting gauge is as follows: 1. Install   pinion,   cage   and   bearing   assembly   in   the differential carrier. 2. Attach  the  step  plate  clamp  assembly  to  the  carrier flange  and  locate  step  plate  clamp  screw  over  the center of the pinion as shown in Fig.  26. Fig.  26  Locating Step Plate Clamp 3. Install   step   plate   under   clamp   screw   and   tighten screw  to  hold  the  step  plate  securely  in  position  as shown  in  Fig.  27.    The  step  plate  is  necessary  in order to project the face of the pinion to where it can be measured by the gauge which is on the centerline of the ring gear. NOTE Be sure CTS-2095S-CHAPTER I-Page 11 PRINTED IN UNITED STATES OF AMERICA

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