C-Series Book - Industrial Engine Service

10
CLEARANCES AND TOLERANCES – CONNECTING ROD & PISTON
Torque (see chart)
Torque (see chart)
Stagger Ring Gaps
Piston Pin
Hole Diameter 1.9995-2.0
Oil Ring
Oil Scraper Ring
Compression Rings
Pin to Bushing
Clearance (see chart)
Description Unit C-46 C-66 C-96 C-101/106
Oil Pump Gr. to Body Clearance inch .001-.003 .001-.003 .001-.003 .001-.003
mm .0254-.0762 .0254-.0762 .0254-.0762 .0254-.0762
Oil Pump Gear Backlash inch .003-.005 .003-.005 .003-.005 .003-.005
mm .0762-.127 .0762-.127 .0762-.127 .0762-.127
Piston Dia. (at bottom of skirt) inch 4.994-4.996 5.744-5.746 6.992-6.993 7.4905-7.4952
mm 126.847-126.898 145.897-145.948 177.596-177.622 190.259-190.310
Piston to Cylinder Clearance inch .003-.007 .003-.007 .006-.009 .007-.0105
mm 0.0762-.1778 0.0762-1778 .1524-.2286 .1778-.2667
Piston Ring Groove Width inch .251-.252 .251-.252 .251-.252 .2515-.2525
mm 6.375-6.400 6.375-6.400 6.375-6.400 6.388-6.413
Piston Ring Clearance in Groove inch .002-.004 .002-.004 .002-.0035 .0025-.0045
• Compression mm .0508-.1016 .0508-.1016 .0508-.0889 .0635-.1143
• Scraper
inch .0015-.0035 .0015-.004 .0015-.004 .0025-.0045
mm .0381-.0889 .0381-.1016 .0381-.1016 .0635-.1143
• Oil Control
inch .002-.004 .002-.004 .002-.004 .002-.004
mm .0508-.1016 .0508-.1016 .0508-.1016 .0508-.1016
Piston Ring Gap
inch .010-.020 .010-.020 .027-.037 .023-.033
• Compression mm .254-.508 .254-.508 .685-.939 .584-.838
• Scraper
inch .010-.025 .010-.025 .015-.030 .023-.033
mm .254-.635 .254-.635 .381-.762 .584-.838
• Oil Control
inch .010-.020 .015-.025 .015-.025 .023-.033
mm .254-.508 .381-.635 .381-.635 .584-.838
Piston Pin Diameter inch 1.4835-1.4840 1.4835-1.4840 1.9985-1.9990 1.9985-1.9990
mm 37.680-37.693 37.680-37.693 50.761-50.774 50.761-50.774
Piston Pin Bushing Assembled inch 1.4845-1.4850 1.4845-1.4850 2.000-2.001 1.995-2.0005
Inside Diameter
mm 37.706-37.719 37.706-37.719 50.8-50.825 50.7-50.8
48 C-SERIES SERVICE, OPERATION & PARTS MANUAL – AEPB1 1-800-331-3662