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4. Mount the collar (C), the spring (D), the cup (E) and
the half collets (F).
5. Press down hard on the cup (E), using the special tool
"7107-1460-047" to insert the half collets (F) into the
valve stem groove.
6. Release the tool and check that the half collets are
positioned correctly.
If the half collets are not correctly positioned, repeat
the operation.
7. Repeat the same operation on the other valves.
7.5 INSTALLATION OF CRANK GEAR AND CRANKCASE
7.5.1
Installing piston/connecting rod -engine
block
Important
• Make sure that the engine block and the crankcase
are perfectly clean and dry.
1. Assemble the pipe (A) with the oil suction filter.
2. Mount the new O-rings (A1).
3. Carefully clean and lubricate the cylinders and the
connecting rod-piston assembly (B).
4. Rotate the sealing rings so that the cuts have a
displacement of about 120° between them.
Important
• In order not to damage the sealing rings and the
contact areas while inserting the piston into the
cylinder, use the special containment device.
5. Mount the connecting rod-piston assembly (B) onto
the engine block and position the connecting rod
big ends along the axis of the crankshaft.
Important
• The piston combustion chamber must be assembled
on the precombustion chamber.
Service Manual LDW FOCS 502 automotive _ cod. ED0053027270 - 3° ed_rev. 02
INSTALLATION OF ASSEMBLIES
95
96
97
E
D
A1
A
B
7
F
C
67
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