Hydraulic Pump Components (1 P); Mechanical Speed Governor; Mechanical Speed Governor Components - Kohler KD 625/2 Workshop Manual

4
Disassembly / Reassembly
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Hydraulic pump components (1 P)

1 Seal ring
2 Centering ring
3 Coupling
4 Half coupling
5 Flange
6 Gear
7 Bracket
8 Thrust washer
9 Stop ring
10 Cover
The maximum total torque is thus 30 Nm corresponding to 12.5 HP at
3000 r.p.m. Reduction ratio 1:1.

MECHANICAL SPEED GOVERNOR

Weight-type governor housed inside the camshaft drive gear.

Mechanical speed governor components

1 Gear
2 Weight
3 Mobile bell
4 Stop ring
5 Thrust washer
6 Yoke
7 Lever
8 Drive rod
9 Governor spring
10 Rack control lever
Weights are moved to the periphery by the centrifugal force and thus
axially shift a mobile bell connected to the injection pump rack control
lever by a linkage.
A spring placed under tension by the accelerator control offset the weight
centrifugal force.
Balance between the two forces keeps speed at an almost constant
level in spite of load variations.

See page 62 for timing.
KD 625-2 Workshop Manual_cod. ED0053029380_1° ed_ rev. 00