SERVICE MANUAL INSTALLATION JOURNAL  CAPS  WITH  LOCK  FLATS  (Fig.    36)  - When installing new journal kit caps into yoke ear holes, the  lock  flat  on  two  of  the  journal  caps  must  be  kept  in alignment with the locking flats near the front of the yoke ears.  Proper location of locking flats will assure that the journal cap will not rotate. The  installation  of  a  driveshaft  into  the  vehicle  does  not present   any   unusual   mechanical   difficulties.      Before actual installation, the drive-shaft should be checked  for the following items: 1. No   damage   or   dents   on   driveshaft   tubing   which could   cause   unbalance.      If   the   dents   are   severe enough they can weaken the tube and a failure might occur under torque load. 2. Splines   should   slide   freely   with   slight   drag   from spline seal. 3. Bearings   should   flex   and   be   free   from   excessive bind.  A slight drag is the most desirable condition on a new universal joint.  This drag is from the bearing seals.    When  rotating,  yoke  lug  deflections  cause some  additional  clearance.    Excessive  looseness  is not desirable due to the resulting unbalance. 4. Mounting   flanges   and   pilots   should   be   free   from burrs, paint and foreign substances which would not allow proper seating at assembly. The  driveshaft  is  mounted  using  flange  bolts,  bearing capscrews,  or  "U"  bolts  depending  upon  the  size  and construction.    These  bolts  must  carry  high  torque  loads and  should  be  of  quality  material  and  properly  torqued. The following reviews requirements on these bolts: 1. Flange   Bolts:   Flange   bolts   should   be   alloy   steel equivalent   to   SAE    Grade    8,    high-strength    bolts. These  bolts  used  with  spring  lockwashers  and  nuts provide the capacity. required.  The nuts should be torqued to the following specifications: N.m Ft. Lbs. 5/16"-24 Thread 29.8-32. 5 22-24 3/8"-24 Thread 54.2-59.6 40-44 7/16"-20 Thread 85.4-94.9 63-70 1/2"-20 Thread 132.9-146.4 98-108 IMPORTANT In  cap  and  bolt  construction  joints  (Fig.    7),  be  sure  to torque the cap-screws to 135.6 N.m (100 ft.lbs.).  These joints are usually in the inter-axle assemblies. 2. U-Bolt Style Yokes: On smaller size universal joints, a "U" bolt style end yoke is used.  This construction permits   easier   assembly   where   the   smaller   size bearings allow its use.  The bearing race is seated in a half  round  hole  and  under  locating  ears.    Be  sure that  mounting  faces  are  cleaned  of  rust,  paint  and other foreign material.  The "U" bolts are assembled over   the   bearing   races   to   retain   them   in   the   end yokes.  Spring lockwashers and nuts should be used with   these   "U"   bolts   at   assembly.      The   following torque loads are suggested for use with these parts: N.m Ft. Lbs. 5/16"-24 Thread 18.9-23.0 14-17 3/8"-24 Thread 27.1-32.5 20-24 7/16"-20 Thread 43.3-50.1 32-37 These    torque    loads    are    somewhat    lighter    than normally   used   with   these   thread   sizes,   how-ever,   the lower   torques    are    required    to    prevent    bearing    race distortion. ASSEMBLING SLIP JOINT ON SHAFT Fig. 37 1 Yoke Lugs in Line 2 Line Up Arrows CTS-4017 - Page 19 PRINTED IN UNITED STATES OF AMERICA