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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
ABCD
58,0÷08,04305161°5
αα
αα
α
131 132
4
133
134 135
A mm
313,0÷031,05,0
B mm
01,32÷50,3205,32
Piston coolant nozzles
Caution – Warning
The piston has a recess so that during up-down movements
and vice versa it cannot come into contact with the nozzle.
When remounting the nozzle be careful that it is placed so that
when the piston goes past it is in the
centre of the recess.
They are in the supercharged LDW 1204/T engine and are housed
near the main bearings.
Components:
1 Washer
2 Nozzle
3 Washer
4 Joint (tighten to 12Nm)
5 Valve (opening pressure = 1÷1.2 bar)
6 Spring
Characteristics (mm):
Shoulder half rings
So as to keep them in their seats during assembly, put a bit of
grease.
The half-rings must be assembled with the slots A as in the figure.
Thickness of half-rings is equal to 2.31÷2.36 mm.
They are supplied as spare parts as increased thickness 0.1 and 0.2
mm, see below.
Crankshaft axial clearance
After tightening the main bearings measure the axial clearance A
between the crankshaft flywheel side shoulder and the main bearing
half rings.
If the clearance is not within the given value check value B.
If need be, fit oversized half rings, see below.
Limit value
Ref. Clearance
Disassembly / Reassembly
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