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Old 08-09-2011, 06:05 PM   #1
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fuel injection pump

I have sabre lehman 4D254 , 90 HP.* i have the owner manual and there is nothing about the injection pump...except part number.

I would like to know if i have to change oil in this pump and how to do it ( if i have to)

Some guys came on my boat to check and were not able to show me how to do it. Another one told me that i don't have to do it because it is done automatically when i do the oil change on my motor.

on the pump it says :* MINIMEC******* CAV- ENGLAND.

if i have to drain the oil in the pump...do i have to bleed the pump after?
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Old 08-09-2011, 06:19 PM   #2
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fuel injection pump

From your photos it appears that your pump is lubed by the engine's lube oil. I'm saying this on the assumption that the hoses attached to the top and bottom of the pump are plumbed to the engine, perhaps to the oil filter fitting. If this is the case, then you don't need to change the pump oil by itself, and there would be no reason to.

The CAV/MINIMEC/SIMMS injection pumps on the FL120 and the older 4-cylnder Ford Lehmans do need to have their lube oil changed every 50 hours because they are lubed independently of the oil in the engine itself and the oil is gradually diluted by fuel leaking down past the jerk injection pistons up above. The photo below is of the pump on one of our FL120s and as you can see there is no oil plumbing attached to the pump. The drain plug for the pump oil is on the bottom of the pump case more or less under the letter "L" in "Level."

But if you have any questions regarding a Ford Lehman engine I suggest you call Brian or Bob Smith at American Diesel. Bob worked for Lehman way back when and was involved in the marinization of a number of their engines. Brian is his son. American Diesel is the best place today for Lehman advice, problem-solving, and parts.


-- Edited by Marin on Tuesday 9th of August 2011 06:23:00 PM
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Old 08-09-2011, 06:48 PM   #3
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fuel injection pump

thank you Marin , i was waiting for your answer.

i search other topic and the way i could see, the pump i have is lubricated by the motor.
Yes the hose is a return hose to the motor oil.

thank you.

CJ


-- Edited by septembre on Wednesday 10th of August 2011 07:09:26 AM
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