New Holland CX720 Repair Manual page 1583

POWER PRODUCTION - ENGINE
The intake and exhaust manifolds are bolted to the head, the intake manifold is mounted on the right hand side of the
engine, with the diesel injectors mounted outside the rocker cover. The exhaust manifold is mounted on the left hand
side of the engine. Water outlet connections and thermostats being attached to the front of the cylinder block.
Valve guides are integral in the cylinder head, and valves with oversize stems are available in service. Special re-
placeable sintered iron valve seats are pressed into each valve port during manufacture and oversize valve seats
also available in service.
All valves are fitted with positive valve rotators and valve stem oil seals. Valve clearance is maintained by adjustment
of the self locking adjusting screw, mounted in each of the rocker arms.
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CAMSHAFT ASSEMBLY
The camshaft runs in 5 replaceable bearings. The camshaft drive gear is in mesh with and driven by the camshaft
idler gear which is driven by the crankshaft timing gear.
Camshaft end thrust is controlled by a thrust plate bolted to the block, and located between the camshaft gear and
the front camshaft journal.
A helical gear is mounted on the rear of the camshaft, and drives the engine oil lubrication pump mounted forward of
the flywheel.
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CRANKSHAFT ASSEMBLY
The crankshaft is supported in the cylinder block by 7 main bearings.
The crankshaft is manufactured from steel with machined finished crank webs
End thrust is controlled by a thrust bearing incorporated in the centre main bearing of the crankshaft.
An external damper is fitted to the crankshaft pulley to ensure smooth running operation. Front and rear crankshaft
oil sealing is effected by cassette type seals that are designed for long and durable service life.
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