How to zero set Fuel index and Actuator Motor on marine engine

Our team visited a vessel which had problem with main engine not stopping when a command is given to the governor actuator. After checking all the electronic data, it shows all was normal, however, the mechanical side of it needed to set the fuel index, as well as actuator motor. Here is how to zero set fuel index of an engine.

Checking slip on the Clamp con of Actuator motor shaft.

Before starting any adjustment, first, follow below steps.

• Stop M/E by Handle order.
• Actuator position on ACP and Local position should be “0” position.
• Fuel index on Fuel pump should be near to “0”
• However, if the fuel index is over than 5mm, we called it as a sleeve of Actuator
  motor.

The reasons of slip on the Clamp con of Actuator Motor shaft are as follows.

• Grease or Oil in the clamp cone and Shaft of Actuator.(Don’t grease and Oil in
  there)
• The mechanical stopper set to lower than before. (The mechanical stopper
  located in Fuel linkage or local stand area should be set to 110% engine load.)
• It is possible to adjust, sometimes the bolt of stopper was released by
  engine vibration.
• Sticks of the Fuel linkage (check fuel linkage from local stand (control position)
• Loose the bolt of Clamp cone.(re-tight after cleaning the clamp cone and shaft)

Also see Basic understanding about marine engine governors

Quote(communications in other project)( blue color is rely of KM)–
Please note that there is difference in steps mentioned earlier and in message below. Earlier message you had asked to move the handle and telegraph in ECR like in air running and stop the both unit to set “Zero “position of the
actuator (Step 6 in Case 1).
It is not necessary if the Actuator position were despised “0” on the ACP.
1)However as you noted us as that “Actuator Position in ACP: 0 (It is normal position when the handle is in stop position)
2) Local indicator: 14%(It means that the Clamp cone has been sleeved from Actuator shaft. it should be “0” not be 14% ), 3)Fuel Pump Index: 20 (Fuel linkage connected with clamp cone ,so if you do as our advice below ,it will be reached at “0” position)
When the handle is in stop ,the Actuator position, Local indicator and the Fuel Pump Index should be in “0” position but the fuel index may not reach to “0” position due to mechanical spec’

When trying out Emergency Maneuvering:

In emergency stand after releasing the clamp (Take out the clamp cone from the Actuator shaft then cleaning the Clamp cone and Arm of fuel linkage and Actuator shaft ,
at this time don’t use oil or grease) , we have problem in taking out actuator by hand wheel(Not necessary because Actuator shaft is “OK” but Clamp cone was sleeved on the
Actuator shaft, ), so we move the fuel index to 10 -15 notches in local stand and then take it out, similarly after completion of test for emergency
maneuvering we move fuel lever in local stand to 10-15 notches(Yes I understood what you mean ,you had to move the fuel lever because it was sleeved the Clamp cone from
the Actuator Motor shaft .

Mostly read Starting Problems On Marine Auxiliary Diesel Engine

You have to set “0” index(notches) not 10-15 “index” and engage the claim cone then change a Change over mechanism to remote mode ,
and you can control M/E RPM until minimum RPM that is all of how to “Zero” set the Fuel linkage and Actuator) and then engage the actuator cone as this is not
aligned. (If you do as our advice, it will be normal)
The above problem indicates we have to adjust the lever linkages please advise.
(It is not necessary to adjust fuel linkage because fuel index will be reached “0” position if you do as our advice )

How to re-setting “Zero” position of Actuator motor and Fuel linkage.

• Engine stop (Actuator position should be displayed as “0”)
• Turn off the power of DSU (440 VAC )
• Release clamp cone on the Actuator and cleaning the shaft and clamp cone.
• Control position change to local control and Change over mechanism change to “Emergency”
• Fuel index set near to “Zero” by Fuel lever handle.
• Then change the Change over mechanism to “remote” and tight the “Clamp cone”on the Actuator.
• Turn on the power of DSU 440 V.
• And that is it. Your engine is good to go.

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