G424F(FE) Service Manual Chapter 3. Engine Mechanical System 31
Technical Specifications
CRANKSHAFT
Maximum saddle taper..................................................................................................................... 0.005 mm
Maximum saddle out-of-roundness .................................................................................................. 0.004 mm
Crankshaft maximum warping............................................................................................................ 0.03 mm
Trunnion diameter........................................................................................................ 57.9820 – 57.9950 mm
Journal diameter................................................................................................................ 48971 – 49987 mm
Maximum clearance between trunnion and shell ..................................................................0.015 – 0.041 mm
Clearance between journal and connecting rod shell............................................................0.012 – 0.062 mm
Connecting rod journal end clearance ..................................................................................0.070 – 0.242 mm
Reboring number ...........................................................................................................................................2
Crankshaft end clearance ......................................................................................................0.02 – 0.352 mm
Shells: See color definitions below, under “Table of Spare Shells”
CYLINDERS AND PISTONS
Clearance between piston and cylinder (skirt lower area) .....................................................0.010 a 0.030 mm
Maximum saddle out-of-roundness .................................................................................................. 0.127 mm
Crankshaft maximum warping ........................................................................................................ 0.127 mm
Piston stroke....................................................................................................................................... 100 mm
Piston bore ........................................................................................................................................ 87.5 mm
Distance between piston head in the TDC and block surface....................................................0.11 a 0.43 mm
Angle between the compression ring openings..........................................................................................100°
Gap between compression ring tips ............................................................................. 1st groove 0.25 – 0.45
....................................................................................................................................2nd groove 0.15 – 0.45
Gap between compression rings and grooves
– Upper groove .......................................................................................................................0.005 – 0.085
– Lower groove .......................................................................................................................0.035 – 0.008
Gap between the oil scraper-type control oil....................................................................................0.20 – 0.55
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