SAFARI

36 4 DLT ENGINE VALVE SEAT DIMENSIONS INLET EXHAUST Valve seat angle ( ø ) 45 0 -15 ' 45 0 -15 ' Valve seat dia ‘F’ in mm 36.9 31.0 cylinder head Distance ‘G’ between mm 1.850 1.950 cylinder head mating surface with crank case to valve seat in cylinder head Maximum run out of mm 0.040 0.040 valve seat in cylinder head with respect to valve guide axis VALVE SEAT INSERTS Valve seat insert & bore dia in cylinder head Stage Valve seat Valve seat insert bore in insert out cylinder head side diameter mm mm INLET Standard 39.900/39.925 40.080/40.105 Standard 1 40.200/40.225 40.380/40.405 EXHAUST Standard 33.950/33.975 34.080/34.105 Standard1 34.250/34.275 34.380/34.405 Depth of bore Thickness of in cylinder valve seat head for valve insert seat insert mm mm INLET 9.0/9.2 7.3/7.5 EXHAUST 9.0/9.2 7.3/7.5 VALVE TIMING Inlet opens - 27 0 B.T.D.C. Inlet closes - 49 0 A.B.D.C. Exhaust opens - 72 0 B.B.D.C. Exhaust closes - 23 0 A.T.D.C. Fuel injection - Refer the FIP timing setting procedure TAPPET & TAPPET BORE DIMENSIONS Out side Diameter Tappet bore in of tappet cylinder head mm mm Standard 35.450/35.466 35.500/35.525 Standard I 35.650/35.666 35.700/35.725 Diametral clearance of tappets in cyl. head bores 0.034 to 0.075 mm CRANKSHAFT Stage Crank case main Crank shaft bearing bore main bearing diameter with journal bearing shell diameter mm mm Standard 60.040/60.060 59.980/60.000 Standard1 59.940/59.960 59.880/59. 900 Repair 1 59.740/59.760 59.680/59.700 Repair 2 59.440/59.46 59.380/59.400 Stage Connecting rod big Crank pin end bore diameter journal with bearing shell diameter mm mm Standard 50.035/50.055 49.995/49.98 Standard1 49.935/49.955 49.88/49.895 Repair 1 49.735/49.755 49.68/49.695 Repair 2 49.435/49.455 49.38/49.395 Stage Width of 4th main bearing journal mm Standard 27.000/27.052 Standard1 27.100/27.152 Repair 1 27.200/27.252 Thickness of 4th main 2.720, 2.670, bearing thrust washers 2.620, 2.570, 2.520 mm End play of crank shaft 0.070/0.252 mm Fillet radius of crank pin journals 1.750/2.250 mm bearing journals Fillet radius of crank pin journals 1.750/2.250 mm Width 1st, 2nd, 3rd and 5th 27.000/27.750 mm main bearing journals Width crank pin journals 24.500/24.700 mm Maximum permissible taper 0.005 mm and ovality of main bearing journals