New Holland 40 Series Repair Manual page 38

- - - - - - - - - - - PART 1 - ENGINE SYSTEMS - - - - - - - - - - -
R1 -31.Q
Piston Assembly Disassembled
1. Piston 5. Bearing Liners
2. Pin Retainers 6. Bearing Cap
3. Piston Pin 7. RetaininQ Bolts
4. Connecting Rod 8. Piston Rings
5. Ensure each piston and rod assembly re-
mains matched together for re~assem-
bly,
Figure 33, into the cylinder block.
Inspection and Repair
1 . Clean the piston and connecting rod as-
sembly in a suitable solvent and inspect
for damage to ring lands, skirts, or pin
bosses.
I
' - ----------a..j
34
2. Check connecting rod components for
damage and place in an alignment fixture
to check for distortion. Ensure that any
distortion, is within specification as fol-
lows:-
Maximum Twist 0.012 in (0.30mm).
Maximum Bend 0.004 in (0.10mm),
3. Check piston pin bushing for damage or
wear in the following manner.
Measure the outside diameter of the piston
pin, and inside diameter of ttle connecting rod
bushing to the following;
Piston Pin Outside Diameter
Naturally Aspirated:
1.4998= 1.soo in (38.095-..38.1 oornm).
Turbocharged:
1.6248-1.625 in (41.270-41.275mm).
Connecting Rod Bush internal Diameter
Naturally Aspirated:
1.5005-1.5008 in (38.113-38.120mm).
iurbocharged:
1.6255-1.6258 in ( 41.288-41 .295mm)
CONNECTING ROD BUSH
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R1-34 E)
Connecting Rod Bush Installation
Removal
1. Washer
2. Collar
3. Installation Insert 1
4. Bush
5. Installation Insert 2
6. Pins
7. Fixture
8. Connecting Rod Facing up
9. Remover Insert 1
1
o.
Remover Insert 2
20
Installation
11 . Remover Insert 3
12. Connecting Rod Location
13. Washer
14. Location Plate