Timing marks
Timing marks on gears are in alignment when the 1st cylinder piston is at its top, dead center between
compression and power strokes.
On crankshaft gear 2 dots on tooth
On idler gear:
• against crankshaft gear mark • 1 dot on tooth
• against camshaft gear mark • 1 dot on tooth
• against high pressure pump mark • 2 dots on notch
On high pressure pump gear 1 dot on notch
On camshaft gear 1 dot on notch
2.1.11 Connecting rod
Connecting rod
Big-end bearing shell thickness:
• standard
1.835 - 1.842 mm
• 1st undersize 0.25 mm
1.960 - 1.967 mm
• 2nd undersize 0.50 mm
2.085 - 2.092 mm
• 3rd undersize 1.00 mm
2.335 - 2.342 mm
• 4th undersize 1.50 mm
2.585 - 2.592 mm
Big-end bearing clearance 0.046 - 0.098 mm
End float (side clearance) at big-end on crankshaft 0.200 - 0.410 mm
Piston pin bushing location perpendicular to
longitudinal axis of connecting rod to be within
0.15:100
Piston pin bushing location and big-end bearing
location to be parallel to within
0.05:100
Maximum permissible weight difference between
connecting rods in the same engine
20 g
Weight marking (letter) at lower end.
33, 44, 49, 66 and 74 engines
Inside diameter of piston pin bush (with bush
pressed into connecting rod)
40.025 - 40.040 mm
Outside diameter of piston pin bush (std) 44.080 - 44.120 mm
Outside diameter of piston pin bush (oversize 8353
28326)
44.580 - 44.620 mm
Interference fit: connecting rod small end bushing-
connecting rod
0.057 - 0.120 mm
2. Specifications
4th Generation Engines 2-13
8370 79492
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