Workshop Manual

Technical DataPiston rings63 series 74 series75 seriesCompression rings, No. ................................ 2 pcs 2 pcsOil ring, No. .................................................. 1 pcs 1 pcsPiston ring gap in cylinder liner at diameter98.425 mm (3.8750") and 107 mm (4.2126"):Compression ring, upper ........................... 0.20–0.30 mm 0.30–0.50 mm(0.0079–0.0118") (0.0118–0.0197")Compression ring 2:nd .............................. 0.25–0.50 mm 0.60–0.80 mm(0.0098–0.0197") (0.0236–0.0315")Oil ring ....................................................... 0.30–0.60 mm 0.30–0.55 mm(0.0118–0.0236") (0.0118–0.0217")Gudgeon pinsClearance, gudgeon pin–small end bush ...... 0.014–0.022 mm 0.020–0.030 mm(0.0006–0.0009") (0.0008–0.0012")Gudgeon pin diameter STD. ......................... 40.000–40.004 mm 46.996–47.000 mm(1.5748–1.5750") (1.8502–1.8504")Gudgeon pin hole diameter in piston ............ 40.000–40.008 mm 47.005–47.012 mm(1.5748–1.5751") (1.8506–1.8509")Cylinder headsQty. ............................................................... 2 pcs 2 pcsHeight ........................................................... 100.85–101.15 mm 108.85–109.15 mm(3.9705–3.9823") (4.2854–4.2972")min. ........................................................... 100.65 mm (3.9626") 108.65 mm (4.2775")Sealing groove depth .................................... 0.10 ±0.02 mm 0.10 ±0.02 mm(0.0039 ±0.0008") (0.0039 ±0.0008")Screws, cylinder headQty per cylinder head ................................... 20 pcs 20 pcsThread dimension ......................................... M 11 M 11Length .......................................................... 142 mm (5.590") 150 mm (5.905")Cylinder blockHeight, upper block plane – crankcasecentre (A) ..................................................... Min. 369 mm (14.528") Min. 403 mm (15.866")Height, lower block plane – crankcasecentre (B) ..................................................... Min. 90 mm (3.543") Min. 90 mm (3.543")8