AGCO Power 49 - Piston, Rings and Pin

33, 44, 49, 66 and 74 engines
Connecting rod small end bore 44.000 - 44.025 mm
Connecting rod small end bore (oversize bush) 44.500 - 44.525 mm
Connecting rod big-end bore 71.730 - 71.749 mm
84 and 98 engines
Inside diameter of piston pin bush (with bush
pressed into connecting rod)
44.025 - 44.040 mm
Outside diameter of piston pin bush (std) 48.080 - 48.120 mm
Outside diameter of piston pin bush (oversize 8363
38606)
48.580 - 48.620 mm
Interference fit: connecting rod small end bushing-
connecting rod
0.057 - 0.120 mm
Connecting rod small end bore 48.000 - 48.025 mm
Connecting rod small end bore (oversize bush) 48.500 - 48.525 mm
Connecting rod big-end bore 76.730 - 76.749 mm
2.1.12 Piston, rings and pin
Piston, rings and pin (33, 44, 49, 66 and 74 engines)
Piston diameter:
• 17 mm from lower edge (33, 44, 66 engines)
107.883 - 107.897 mm
• 19 mm from lower edge (49, 74 engines)
107.893 - 107.907 mm
Pin bore in piston 40.003 - 40.009 mm
Piston pin diameter 39.991 - 40.000 mm
Width of ring grooves:
• 1st groove
wedge shaped ring
• 2nd groove
2.560 - 2.580 mm
• 3rd groove
3.040 - 3.060 mm
Side clearance of piston rings in their grooves:
• 1st ring
wedge shaped ring
• 2nd ring
0.03 - 0.062 mm
• 3rd ring
0.05 - 0.082 mm
• Reject limit
0.15 mm
Piston ring height (in direction of cylinder):
• 1st ring
wedge shaped ring
2. Specifications
2-14 4th Generation Engines
8370 79492