TM 10-3930-653-14&P Inspect the push rods.  If  excessively  worn,  twisted, or  damaged,  replace  with  a  new  push  rod.    If  bent  by more than 0.05 mm (0.0020 in), correct or replace. (2)   ROCKER SHAFT Inspect the rocker shaft for wear, damage, bending, etc.  Replace if worn by more than 0.05 mm (0.0020 in). (3)   ROCKER ARM AND ADJUSTING BOLT Inspect  the  portion  of  the  rocker  arm  and  adjusting bolt contacting  the  valve  stem  and  check  for  fit  with  the rocker shaft.  If excessively worn or scarred, or if rocker shaft clearance exceeds  the  prescribed  limit,  replace the rocker arm (and adjusting bolt) with a new one. Fig. 4-73.  Valve Rocker Shaft Assembly Correct to within Service limit Rocker arm/ 0.020 to 0.054 shaft clearan- (00009 to 0.0021) 0.1 (0.0039) ce mm (in) 4-2-4-13. DRIVING PLATE, RING GEAR AND FLYWHEEL Inspect driving plate disc or flywheel contact surface and  ring  gear  teeth.    If  excessively  damaged  or  worn, repair  or  replace  as  required.    On  flywheel,  if  ring  gear teeth  are  only  slight-ly  worn  or  damaged,  ring  gear  can be reused by changing the installation setting to flywheel by 45° For    replacement,    heat    the    ring    gear    to    1800C (356°F) and install by shrinkage-fitting. (1)   MEASURING WOBBLE Measure   wobble   with   a   dial   gauge   while   turning crankshaft.  If it exceeds specified limits, replace parts. (1)   Flywheel Wobble limit: A: Less than 0.1 mm (0.004 in) Note: Wobble limit A is max. allowable   wobbling   of   flywheel,   as measured perpendicularly with respect to flat surface of flywheel. Fig. 4-74.  Measuring Flywheel 4 - 41