New Holland CX720 Repair Manual page 1896

10. When the timing pin is located in the slot of the crank-
shaft the pin is fully seated.
Do Not attempt to rotate the crankshaft when timing
pin is fully inserted as damage will occur.
11. Check that the injection pump timing pin Tool No
295005 (NA-FNH00536-2) will screw into the pump
hub.
If the pin engages in the pump timing plate (inset, Fig.
12) when the crankshaft is at TDC the pump timing
is correct.
IMPORTANT: The engine must never be rotated while the
timing pin is installed.
12. If pump timing is incorrect and timing pin can not be
screwed into pump, remove pump timing gear, install
timing pin 295005 (NA-FNH00536-1) into pump and
refit timing gear.
NOTE: This injection pump timing check assumes that the
crankshaft and camshaft timing gears were correctly posi-
tioned during engine assembly. To check the position of
these timing gears it is necessary to remove the engine
front cover.
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