New Holland CX720 Repair Manual page 1768

Connecting rod and piston - Overhaul (B.10.A.47 - F.10.A.40)
CX720, CX740, CX760, CX780, CX820, CX840
1. Remove piston pin snap rings from each side of
piston and remove pin. Using an expander, Tool
No.296028, remove the piston rings.
Ensure each piston and rod assembly, remains
matched together for re-assembly into the cylinder
block.
Clean the piston, and connecting rod assembly, in a
suitable solvent and inspect for damage to ring lands,
skirts, or pin bosses.
Check connecting rod components for damage, and
place in an alignment fixture to check for distortion,
and ensure that any distortion, is within specification
as follows.
Maximum Twist 0.30 mm (0.012 in).
Maximum Bend 0.10 mm (0.004 in).
Check piston pin bushing for damage or wear in the
following manner.
Measure the outside diameter of the piston pin, and
inside diameter of the connecting rod bushing, to the
following:-
Piston Pin Outside Diameter
44.442-44.447 mm (1.7497-17499 in).
Connecting Rod Bush internal Diameter
44.460-44.467 mm (1.750-1.751 in)
2. CONNECTING ROD BUSH REPLACEMENT
If connecting rod bushes are not to specification re-
place the old bush using using the following proce-
dure.
Place the connecting rod securely in a bench press.
Manufacture from suitable bar stock, a press tool with
the end face ground at an angle, to suit the connect-
ing rod bush side face. Position the tool on the bush,
and gently drive the bush from its position. It is rec-
ommended a guide is manufactured to assist align-
ment of the bar stock during this operation.
A new bush can then be fitted in a similar manner,
by using a suitable piece of bar stock, with an end
face machined flat to suit the standard parallel bush.
Use a guide as described, and gently drive in the new
bush into the connecting rod.
NOTE: Ensure the split in the small end bush is at right
angles to centre line of connecting rod.
POWER PRODUCTION - ENGINE
2 4/7/2006
B.10.A / 222
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TA6010034
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6010035