GearBox Manual Oil change procedure 456 M GT

It is pretty much like any other gearbox/transaxle -

HOWEVER it is a well known fact that they can be UNDER-FILLED due to the complex and irregular shape - resulting in catastrophic failure (even an accident since the gears can suddenly lockup).

I have given thought to this, and believe the safest way is to reverse fill - (fill from the lower drain hole).

Look at this video:

[ame=http://www.youtube.com/watch?v=YCUJbR1MEJA]How To Change your Boat's Lower Unit Oil - YouTube[/ame]

 

New Marpac Marine Boat Universal Gear Lube Pump 7 6020 | eBay

 

Exactly, so use the bottom one.

Most probably they use a pump with a hose.

 

Won't change a thing.


Try it Ferrari's way and do it correctly. The wheel has already been invented.


The cases are divided in two internally with a restricted flow path between them. Which hole you pour or pump the oil into will not change that. Fill it up, do something else for a half hour then recheck and top up. Recheck in another half hour. Do that until the level quits dropping.

 

Sounds logical, whatever "Ferrari's way" is meant to be, if there is even such a thing.

 

Exactly so maybe leave the advice to those who do.

Trying to help is OK but disinformation is counterproductive.

 

On the top?

What makes you think that?

Have you read the owners manual? It is pretty clear with pictures and everything.

 

I didn't ask what the Ferrari way is - I was stating that there is no such thing as "Ferrari" way, unless you mean by doing it "wrong over and over again and expecting a different result".

(cam belts, bearings, most rubber seals and hoses, sticky switches, and so on...)

 

The shop manual is designed for the people who know how to work on the car, not those that don't.


Look in the owners manual.

Don't over think or over analyze this. Pull the drain plug and let the oil out. Let it drain for a half hour. Refill as described earlier.

 

Posted several times before, but should be similar to this:
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Prior to the 575 manuals never went to that detail. When the 575 manual came out we all complained about the new format because they sacrificed a great deal of important information for the sake of step by step instructions of simple procedures. One of the examples we used was the tire changing procedure. As we told Ferrari, the mechanics really don't need to be told how to change a tire but some in depth information about the motor would be nice. Their attitude was we should just be buying new motors so we didn't need it. The manual for his 456GT was very different.


They still leave out the fact that the transaxle is internally partitioned and especially when cold it takes quite some time for the oil to drain completely or to fill the fill the two compartments.

 

Is there an internal oil filter,
and is there any reason to
access that and to clean it ?

 

Brian- Affirmative, that is why mine goes to my techs because they know what they are doing.

 

Yes

There have been internal oil strainers going back to the 275 days. Most have been inaccessible without disassembly. What they are really for is once something starts grinding itself up inside to prevent the debris from destroying the pump and rapidly accelerating the process. Once the strainer is being put to use the transmission problem will be symptomatic in some fashion and will be no secret. In recent times removing and inspecting the filter has been a line item on some of the services as a partial replacement for some of the other traditional items that are no longer needed. We went the life of TR and 308 transmissions and cars without ever needing to inspect the screens. If you feel like now suddenly we should, go ahead.