SERVICE MANUAL CONNECTING RODS, PISTONS, RINGS & SLEEVES Section 5 6. Fit     connecting     rod     bearings     and measure RUNNING CLEARANCE and END CLEARANCE as follows: NOTE:    Do    not    turn    the    crankshaft    during    the following procedures. a. Running  clearance check  using virgin lead wire. 1. Remove   bearing   cap,   then   clean   and   oil   the crankshaft journal. 2. Place  a  suitable  length  of  0.010  in.    virgin  lead wire  across  the  bearing  then  install  the  bearing cap, torquing nuts to 155 N•m (115 lbf-ft). 3. After torquing nuts, remove them along with the bearing cap. 4. Remove the virgin lead wire which will have been crushed    down    to    the    amount    of    clearance between the crankshaft journal and the connecting rod bearing. 5. Measure the crushed wire  with  a  micrometer  to determine RUNNING CLEARANCE. b. Running clearance check  using "PLASTIGAGE". 1. Remove   bearing   cap,   then   clean   the   bearing surface   and   exposed   half   of   the   crankshaft keeping them free of oil.  ("Plastigage" is soluble in oil). 2. Place a piece of "Plastigage" across the bearing then install the bearing cap, torquing nuts to 155 N•m (115 Ibf-ft). 3. After torquing nuts, remove them along with the bearing cap. 4. The   flattened   plastic   material   will   be   found adhering   to   either   the   bearing   shell   or   the crankshaft. DO NOT REMOVE THE "PLASTIGAGE". 5. To  determine  the  running  clearance,  compare the  width  of  the  flattened  plastic  material  at  its widest  point  with  the  graduated  marks  on  the envelope  as  shown  in  Fig.    12.    The  number within  the  graduation  on  the  envelope  indicates the clearance in thousandths of an inch. Figure 12.  - Checking Connecting Rod Bearing Running Clearance c. Running  clearance  check  procedure  using either virgin lead wire or "PLASTIGAGE". 1. The measurement should fall within 0.046 mm (0.0018 in.) 0.130 mm (0.0051 in.) Remove  the  test  material  and  reinstall  the cap   and   bearing   with   correct   torque   if running clearance specification are met. 2. Repeat the chosen method of testing for all the remaining connecting rods. CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 14