TECHNICAL DATA-B.9 Pump Part No.  41314061 (Hobourn Eaton) No.  of Lobes on Inner Rotor ...... ...... ...... Four No.  of Lobes on Outer Rotor ...... ...... ...... Five Inner Rotor to Outer Rotor ...... ...... ...... 0.001/0.006 in (0,03/0,15 mm) Inner Rotor and Outer Rotor End Clearance . ...... 0.001/0.005 in (0,03/0,13 mm) Outer Rotor to Pump Body ...... ...... ...... 0.0055i0.010 in (0,14/0,25 mm) Oil Pump Drive Gear Number of Teeth.. ...... ...... ...... ...... 19 Inside Dia.  of Gear Bore ...... ...... ...... 0.497/0.4978 in (12,62/12,64 mm) Outside Dia.  of Oil Pump Shaft  ...... ...... ...... 0.4990/0.4995 in (12,67/12,69 mm) Interference Fit of Gear on Shaft ...... ...... 0.0012/0.0025 in (0,03/0,06 mm) Clearance between Drive Gear and Pump Body   ...... 0.003/0.007 in (0,08/0,18 mm) Oil Pump Idler Gear Number of Teeth.. ...... ...... ...... ...... 20 Inside Dia.  of Gear Bore ...... ...... ...... 1.000/1.0012 in (25,40/25,43 mm) Outside Dia.  of Gear Bush ...... ...... ...... 1.000/1.0008 in (25,40/25,42 mm) Inside Dia.  of Gear Bush ...... ...... ...... 0.8750/0.8763 in (22,23/22,26 mm) Outside Dia.  of Idler Gear Shaft ...... ...... 0.8737/00.8742 in (22,19/22,20 mm) Running Clearance of Gear on Shaft ...... ...... 0.0008/0.0026 in (0,02/0,07 mm) Idler Gear End Float ...... ...... ...... ...... 0.002/0.016 in (0,05,/0,41 mm) Relief Valve Type ...... ...... ...... ...... Spring Loaded Plunger Pressure Setting.. ...... ...... ...... ...... 50/60 Ib/in- (3,5/4.2 kgf, cm²:) - 345/414 kN/m² Length of Plunger. ...... ...... ...... ...... 0.9375 in (23.81 mm) Outside Dia.  of Plunger ...... ...... ...... 0.5585/0.5595 in (14,19/14,21 mm lnside Dia.  of Valve Housing Bore ... ...... ...... 0.5605/0.5625 in (14,23/14.30 mm) Clearance of Plunger in Bore ...... ...... ...... 0.001 /0.004 in (0,03.0,10 mm) Outside Dia.  of Spring    ...... ...... ...... ...... 0.368./0.377 in (9,35/9,58 mm) Spring-Free Length ...... ...... ...... ...... 1.5 in (38,10 mm) Spring-Solid Length ...... ...... ...... ...... 0.745 in (18,92 mm) Maximum Lubricating Oil Filter Type of Filter  ...... ...... ...... ...... ...... Full Flow Element Type ...... ...... ...... ...... Paper or Spin-on Canister By-Pass Valve Setting     ...... ...... ...... ...... Opens between 8/17 lbf/in² (0.5/1.2 kgf. cm 55,117 kN :m pressure differential COOLING SYSTEM Type ...... ...... ...... ...... Indirect Fresh/Sea Water Cooling utilizing Heat Exchanger Engine Fresh Water (Closed Circuit Capacity) ...... 26 pt (14,8 litre) Including Heat Exchanger Thermostat Type ...... ...... ...... ...... Wax Capsule Opening Temperature ...... ...... ...... ...... 177º-183F (80-84C) Fully Open at ...... ...... ...... ...... 208F (980C) Valve Lift ...... ...... ...... ...... 0.312/0.469 in (7,94/11,91 mm)