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FOCS Workshop Manual_cod. 1.5302.351_7° ed_ rev. 06
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Setting the stop
Remove the rocker arms cover and completely unloosen screw B.
Push rod A to the right and keep it in this position; see figure.
Tighten screw B until it touches rod A.
Release rod A and tighten again screw B by a 0.5÷1.0 turn.
Tighten the lock nut.
Pump/injector unit timing with speed governor
-Loosen the screws C of each pump/injector unit.
-If it is not connected, connect spring D to rod A (with this
operation the speed governor blocks are closed).
-Move plates B of each pump/injector unit rightwards; see figure
(with this operation the pumps/injector unit are at their maximum
delivery).
-Tighten screws C at 1.1 Nm. Re-balance the deliveries.
Note: Spring D is the start-up fuel supplement spring: with the
engine stopped pull rod A to the right by bringing the pump/
injector unit delivery to the maximum value, until the speed
governor comes into operation with the engine running
Injection pump flow limiter and engine torque gearing device
Flow limiter C has the function of limiting the injection pump’s
maximum delivery.
The same mechanism acts also as a torque gearing device.
Indeed, under torque, spring N operating lever L overcomes the
resistance of spring M located in the plunger barrel.
The stroke H that the torque gearing device allows to be carried out
by lever L, will increase the injection pump delivery and the torque
will hit its maximum value.
Important
The stroke H varies depending on which engine torque gearing
device is fitted on the engine.
Settings
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