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6
Disassembly / Reassembly
42
44
45
48
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43
46
KD 702_1003_1404 Workshop Manual_cod. ED0053029340_1° ed_ rev. 00
Speed governor
The weight-type mechanical governor, is driven directly by the
camshaft and is housed with the cylinder head.
Components:
1 Thrust washer
2 Spool
3 Flyweight assembly
Note: In engines with the minimum/maximum (see fig. 49) the
weights are lightened by 25%.
Speed governor components
1 Oil seal
2 Screw
3 Support
4 O-Ring
5 Bearing
6 Retainer
7 Screw
8 Flyweight assembly
9 Spool
10 Thrust washer
Governor springs
Unscrew the pin that attaches it to the cylinder head.
To remove it as shown in the figure it is necessary to dismount
the camshaft. It could also be removed from the accelerator box
side by unscrewing the torque gearing device.
Before reassembling it, check value A (45 to 46 mm) and the
parallelism of the two levels B that must not exceed 0.05 mm.
Note: There are 5 different types of regulator springs C. These
change according to the engine adjustment: standard
spring for 3,600 rpm, for 3,000 rpm, for 2,400 to 2,600
rpm, for 1,800 rpm and for 1,500 rpm.
Governor springs for Gensets
In the section view of the leverages the 4 ball bearings A are
highlighted.
They are mounted on engines for generator sets adjusted at
1,500÷1,800 rpm and on other particular applications on request.
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