New Holland CX720 Repair Manual page 1790

Cylinder head - Assemble (B.10.A.72 - F.10.A.20)
CX720, CX740, CX760, CX780, CX820, CX840
1. Insert the valves into the guide bores from which they
were removed and lap with a suitable paste. Ensure
all traces of paste is removed after lapping.
Use a spring compressor to reassemble the valves,
valve springs, retainers, rotators, and collets, and
install new valve stem seals.
NOTE: Lubricate all components with clean engine oil on
re-assembly.
2. Install new gasket and lower cylinder head into place
while ensuring the gasket remains in position.
loosely position all cylinder head bolts except those
which retain the rocker shaft assembly.
NOTE: Cylinder head bolts may only be removed and refit-
ted four times after which they must be replaced with new
parts.
3. Install rocker push rods in cylinder head and locate
rocker shaft assembly onto cylinder head using the
longer cylinder head bolts.
POWER PRODUCTION - ENGINE
2 4/7/2006
B.10.A / 244
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TA601001 1_757
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BSD1849A_758
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