SAFARI

34 4 DLT ENGINE REPAIR DATA CYLINDER BLOCK Pressure test cylinder block 70 0 to 80 0 C for leakages of water at a 5 bar temperature of and at a pressure of Height of crank case 303.900/304.100 mm (Dimension A) Crankshaft axis from 236.300/236.380 mm crankcase top surface (above dimension with MB caps and front cover installed) Maximum permissible Length wise ‘B’ 0.030 mm unevenness of crank Cross wise‘C'0.015 mm case mating surface with cylinder head Maximum permissible out 0.200 mm of parallelism between crank case top and bottom machined surface Maximum permissible 0.040 mm shift in perpendicularity of cylinder bore from crank shaft axis when checked at 200 mm from crank shaft center line Maximum permissible 0.010 mm taper and ovality of cylinder bore - Liner inner dia 83+ 0.005 - Cylinder parent bore to be finished to size 86.00 to 86.02 mm - Honing of cylinder bores - Please refer separate section on liner PISTON & PISTON BORE SIZES Stage Cylinder Bore Piston dia mm stamped Standard 83.000 A 83.010 B 83. 020 C Standard I 83.030 A1 83.040 B1 83.050 C1 Repair 1 83.200 AR1 83.210 BR1 83.220 CRI Repair 2 83.500 ARII 83.510 BR I I 83.520 CRI I Piston to bore clearance 0.070 to 0.090 mm PISTON RINGS Type Ring Lateral Butt of ring thickness clearance clearance in piston in cylinder groove bore mm mm mm 1st Compression 2.5 0.050/0.082 0.25/0.50 2nd Compression 1.970/1.990 0.050/0.082 0.30/0.50 3rd Oil control 2.975/2.990 0.030/0.065 0.10/0.30 Maximum permissible difference 1.500 gm in weights of piston with pin and rings in one engine Fig. 61