New Holland CX720 Repair Manual page 1589

Data on weight category, half-bearing seat bore category and rod/cap mating numbers are stamped on the connecting
rod.
PISTONS
The pistons are fitted with three piston rings. The first sealing ring is trapezoid in cross-section, the second sealing
ring is chamfered, and the third is a scraper ring.
Pistons are sorted into two categories (1) and (2), according to diameter. They are elliptical in shape and made out
of aluminum alloy. The piston crown includes a high-turbulence combustion chamber.
CAMSHAFT
The camshaft turns on seven mounts (without removable caps), which are built into the cylinder head and fitted with
bushes. There are three drive cams per cylinder.
TIMING SYSTEM
The camshaft is driven by a series of helical gears in a cascade unit located to the rear of the engine. Upper interme-
diate gear (2) is fitted on an adjustable mount. This maintains the correct clearance between this gear and gear (1)
POWER PRODUCTION - ENGINE
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