Iveco N60 ENT M37, Technical And Repair Manual, Page: 14 / 194

Pistons
The pistons integrate the high swirl combustion chamber;
the annular chambers inside the junk ring enable an effective
heat elimination obtained by circulating the lubrication oil
delivered by the spray nozzles mounted on the
crankcase.On the piston skirt the are three seatings for the
retaining rings; the first one of these is obtained by a special
trapezoidal section cast iron insert.
The piston rings have different functions and different geom-
etry.
- 1 st piston ring with trapezoidal section and ceramic
chrome plating.
- 2 nd piston ring with a torsional conical rectangular seal.
- 3 rd piston ring with double oil scraper with internal
spring.
Timing system driving gear
Timing system driving gear machine members are push rods
and rockers type, with a camshaft that is located in the
crankcase and set into rotation directly by the crankshaft.
1. Positioning reference - 2. Crankshaft - 3. Camshaft.
The figure illustrates the position that the toothed wheel has
to have to set the correct timing strokes.
N60 ENT M37 OVERVIEW
1.14
APRIL 2004
Figure 9 Figure 10
04_014_N
04_015_N
Figure 11
04_021_N
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2
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