TECHNICAL DATA-B.2 Recommended Torque Tensions 4.107 and 4.99 4.108 Ibf ft kgf m Nm Ibf ft kgf m Nm Cylinder Head Nuts 42 5,81 57 60 8,3 81 Connecting Rod Setscrews 42 5,81 57 42 5,81 57 * Main Bearing Setscrews 85 11,5 115 85 11,5 115 Flywheel Setscrews 60 8,3 81 60 8,3 81 Idler Gear Hub Setscrews 36 4,98 49 36 4,98 49 Crankshaft Pulley Setscrew-1.56 in (39,6 mm) long 150 20,7 203 150 20,7 203 with 1.875 in (47,6 mm) dia. washer Crankshaft Pulley Setscrew -1.68 in (42,7 mm) long 190 26,3 250 with 1.75 in (44,6 mm) dia. washer (Cadmium Plated) Crankshaft Pulley Setscrew (Phosphated) 230 31,5 310 Atomiser Securing Nuts ., .
12 1,7 16 12 1,7 16 High Pressure Fuel Pipe Nuts 15 2,1 20 15 2,1 20 Dynamo Pulley Retaining Nut 20 2,8 27 20 2,8 27 Alternator Pulley Retaining Nut 30 4,1 41 30 4,1 41 Thermostart Unit 10 1,38 13 10 1,38 13 Thermostart Insulating Adaptor 10 1,38 13 10 1,38 13 The following torque figures will apply with the components lightly oiled before assembly:- *The tab and shim washers may be discarded where used on earlier engines, but the setscrews must be tightened to the torque loading indicated. Service Wear Limits The following "wear limits" indicate the condition when it is recommended that the respective items should be servicec or replaced.
Cylinder Head Bow Cylinder Head Bow Longitud inal Transverse 0.006 in (0,15 mm) 0.003 in (0,08 mm) concave 0.005 in (0,13 mm) convex 0.006 in (0,15mm) 0.001 in (0,03 mm) 0.0005 in (0,01 mm) 0.020 in (0,51 mm) 0.005 in (0,13 mm) 0.006 in (0,15 mm) 0.025 in (0,64 mm) 0.005 in (0,13mm) 0.002 in (0,05 mm) 0.020 in (0,51 mm) 0.010 in (0,25 mm) 0.048 in (1,22 mm) Maximum Bore Wear (when new liners are necessary) Crankshaft Main and Big End Journal Wear Crankshaft Main and Big End Journal Ovality Maximum Crankshaft End Float Valve Stem to Guide Clearance inlet Valve Stem to Guide Clearance Valve Head Thickness at outer edge Rocker Clearance on Shaft Camshaft Journals Ovality and Wear Camshaft End Float Idler Gear End Float exhaust *Valve Head Depth below Head Face-inlet and exhaust *Where vehicle engines have to conform with the smoke density regulation B.S.AU 141 a:
1971, then the valve depths must not exceed production limits as given on page B.8. Manufacturing Data and Dimensions The data regarding clearances and tolerances are given for personnel engaged upon major overhauls. Further information can be obtained on request from the Technical Services Department, Perkins Engines Ltd., Peterborough. CYLINDER BLOCK Total Height of Cylinder Block between Top & Bottom Faces Parent Bore Dia. for Cylinder Liner Parent Bore Dia. for Cylinder Liner Main Bearing Parent Bore Camshaft Bore Dia. No.1 Camshaft Bore Dia. No.2 Camshaft Bore Dia. No.3 Tappet Bore Dia. Fuel Pump Drive Hub Bearing Bore Dia.
4.108,4.107,4.99 4.108 4.107,4.99 4.108,4.107,4.99 4.108,4.107,4.99 4.108,4.107,4.99 4.108,4.107,4.99 4.108,4.107,4.99 9.936/9.939 in (252,374/252,451 mm) 3.249/3.250 in (82,525/82,550 mm) Wet Liners 2.3950/2.3955 in (60,833/60,846 mm) 1.794/1.7955 in (45,568/45,606 mm) 1.78411.787 in (45,314/45,390 mm) 1.776/1.778 in (45,110/45,161 mm) 0.562/0.56325 in (14,275/14,307 mm) 4.108,4.107,4.99 1.812511.8141 in (46,037/46,078 mm)