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KD 702_1003_1404 Workshop Manual_cod. ED0053029340_1° ed_
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Disassembly / Reassembly
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.
Components:
1 Washer
2 Nozzle
3 Washer
4 Joint (tighten to 12Nm)
5 Valve (opening pressure = 1÷1.2 bar)
6 Spring
Characteristics (mm):
A
B
0,80÷0,85
34
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.
Ref.
A mm
0,130÷0,313
B mm
23,05÷23,10
If the clearance is not within the given value check value B.
If need be, fit oversized half rings, see below.
C
D
150
16
Clearance
Limit value
0,5
23,50
6
a
5°
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