TECHNICAL DATA—B.13 Shaft Dia. for Balance Weights    ...... ...... ...... 1.0622/1.0630 in (26,98/27,00 mm) Bore Dia. of Balance Weights ...... ...... ...... 1.0625/1.0637 in (26,99/27,02 mm) Fit of Balance Weights on Shafts ...... ...... —0.0005/+0.0015 in (—0,01/+0,04 mm) Spigot Dia. of Balance Weights ...... ...... 2.4988/2.500 in (63,47/63,50 mm) Recess Dia. in Balance Weight Gears ...... ...... 2.500/2.501 in (63,50/63,53 mm) Fit of Gear on Balance Weight ...... ...... —0.000/+0.0024 in (—0.00/+0,06 mm) Dia. of Shaft for Lub. Oil Pump Gear ...... ...... 0.4215/0.4235 in (10,71/10,76 mm) Bore Dia. of Lub. Oil Pump Drive Gear ...... ...... 0.425/0.426 in (10,79/10,82 mm) Clearance Fit of Gear on Shaft    ...... ...... ...... 0.0015/0.0045 in (0,04!0.11 mm) Depth of Lub. Oil Pump Body ...... ...... ...... 0.999/1.002 in (25,38/25,45 mm) Width of Lub. Oil Pump Drive Gears ...... ...... 0.998/1.000 in (25,35/25,40 mm) End clearance of Lub. Oil Pump Gears when 0.004 in (0,102 mm) joint is fitted ...... ...... ...... 0.003/0.008 in (0.08/0.20 mm) Shaft Dia. for Lub. Oil Pump Driven Gear ..... ...... 0.4382/0.4386 in (11.13/11.14 mm) Bore Dia. of Lub. Oil Pump Driven Gear   ...... ...... 0.4389/0.4396 in (11.15/11.17 mm) Running Clearance of Oil Pump Driven Gear ...... 0.0003/0.0015 in (0.01/0.04 mm) Hub Dia. for Idler Gear ...... ...... ...... 1.4984/1.4990 in (38.06/38,08 mm) Bore Dia. of Idler Gear Bush ...... ...... ...... 1.500/1.5016 in (38.10/38.14 mm) Running Clearance of Idler Gear on Hub...... ...... 0.001/0.0032 in (0.03/0,08 mm) Idler Gear End Float ...... ...... ...... ...... 0.008/0.014 in (0.20/0,36 mm) Note: Later  balancer  units  have  needle  type  bearings  and  all  current  balancer  units  have  reversed  weight  roller bearings. Service Wear Limits The following "wear limits" indicate the condition when it is recommended that the respective items should be serviced or replaced. Cylinder Head Bow ...... Transverse 0.003 in (().08 mm) Longitudinal 0.006 in (0.15 mm) Maximum Bore Wear (when reboring or new liners are necessary).. ...... ...... ...... ...... 0.008 in (0,20 mm) Crankshaft Main and Big End Journal, Wear, Ovality ...... ...... ...... ...... ...... 0.0015 in (0,04 mm) Maximum Crankshaft End Float   ...... ...... ...... 0.015 in (0,38 mm) Valve Stem to Bore/Guide Clearance ...... Inlet 0.005 in (0,13 mm) Exhaust 0.006 in (0,15 mm) Valve Head Thickness at outer edge ...... ...... 1/32 in (0,79 mm) Rocker Clearance on Rocker Shaft ...... ...... 0.005 in (0,13 mm) Camshaft Journals, Ovality and Wear ...... ...... 0.002 in (0,05 mm) Camshaft End Float ...... ...... ...... ...... 0.020 in (0,51 mm) Idler Gear End Float ...... ...... ...... ...... 0.010 in (0,25 mm)