Mechanical Speed Governor; Mechanical Speed Governor Components (Standard); Mechanical Speed Governor Operation (Standard) - Kohler KD 625/3 Workshop Manual

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Mechanical speed governor

The governor (with centrifugal weights) is housed inside the crankca-
se and is controlled by a camshaft gear.
To remove speed governor 1 remove camshaft bell 2 and speed go-
vernor control gear 3.

Mechanical speed governor components (standard)

1 Drive rod
2 Stop ring
3 Bearing
4 Washer
5 Pin
6 Weights
7 Weight support
8 Shaft

Mechanical speed governor operation (standard)

Weights 1 are moved to the periphery by the centrifugal force and
thus axially shift the washer 2 and the drive rod 3 which, by means of
a linkage, move injection pump control lever 4.
The governor springs 5 placed under tension by the accelerator con-
trol lever 6 offset the weights 1 centrifugal force.
Balance between the two forces keeps speed at an almost constant
level in spite of load variations.
Disassembly / Reassembly
9 Key
10 Thrust washer
11 Bearings
12 Shaft support
13 Gear
14 Spring washer
15 Flat washer
16 Nut
4
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