Lombardini LDW 1204/T - Cylinder Head Assembly

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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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Cylinder head assembly
Use a torque wrench equipped with a device for angular tightening.
Measure the length of each screw (normal length = 89.5÷90.5 mm).
Replace it if it exceeds 92 mm.
Proceed as follows.
Cylinder head tightening procedure LDW 1204-1204/T-1404
Following the numerical order shown in the diagram, the bolts must
be tightened in three phases:
1
st
phase = 50 Nm
2
nd
phase = Rotate the wrench 90° in a clockwise direction.
3
rd
phase = Rotate the wrench again 90° in a clockwise direction.
Cylinder head tightening procedure LDW 502-602-702-903-1003
Important
Once the head has been correctly tightened, it should not be
retightened except if it is disassembled again.
Before mounting it is advisable to lubricate stem, shank and
underhead of screws with SPARTAN SAE 460 oil.
A = For LDW 502-602-702 models
B = For LDW 903-1003 models
Following the numerical order shown in the diagram, the bolts must
be tightened in three phases:
1
st
phase = 50 Nm
2
nd
phase = Rotate the wrench 90° in a clockwise direction.
3
rd
phase = Rotate the wrench again 90° in a clockwise direction.
For LDW 502 with pressure cast (aluminium) crankcase:
With head H tightening bolts: 1
st
phase = 60 Nm
With head 8.8 tightening bolts: 1
st
phase = 40 Nm
2
nd
phase = Eseguire una rotazione
della chiave in senso
orario di 90°.
3
rd
phase = Proseguire con una
rotazione della chiave in
senso orario di 90°.
Disassembly / Reassembly