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Go Back   SailNet Community > General Interest Forums > Gear & Maintenance > Engines > Diesel
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Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


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Old 11-13-2009
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Advice for pulling a motor?

I'm going to pull my Yanmar JHTE for a rebuild or replace. I have never pulled a motor before....any advice? "My old man is a television repairman, he's got this ultimate set of tools."
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Old 11-13-2009
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A few thoughts....

Remove everything you can first.. alternator and brackets, starter, oil filter, drain all fluids obviously, RW pump, heat exchager, all hoses.. etc etc, to make the lightest, smallest package you can. If a rebuild is definitely in the works, maybe even pull the head too if clearance is tight.

Depending on clearances out the hatch, maybe separate gear and engine too.

If you have a dripless type seal (non-packing based) be sure to secure it before you shift anything... the sealing pressure on the seal comes from the motor/gear position.

Look into whether or not the boom can be used to hoist the engine out either with a chainfall attached or pressing the mainsheet into service. If you hoist via mid-boom, suggest tensioning a halyard tied around the boom at the same point to minimize boom deflection during the hoist.

Protect all that pretty woodwork you have in the area of the hoist.. nowadays they sell some really heavy cardboard at flooring stores to protect new floors as you add baseboards etc... might work well here too.

The last time we did this I was happy to have a nice, light aluminum block (VW conversion)
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Old 11-13-2009
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Faster has a good list above. The best thing that you can do is to take your time making sure that everything is disconnected and properly labeled. In the removals that I have done I have always removed things like the starter and alternator but have always kept the tranny attached where possible. There is usually another pick point on it which can help you control the angle of the engine and you will get to figure out exactly how it will have to go back in since most people will reinstall everything as a unit. There are obviously cases where that is not possible and the engine and tranny must be separated.
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Old 11-13-2009
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One tip that I found that helped me was to take a very large number of digital photos from all angles, take close-ups, take wide views, take lots, before you take things apart and at each stage.

It makes it really helpful putting it all back together when you come to "Which terminal does this wire go to?" or "was it the top or bottom hose that went to the ..."

Just my 2 cents worth.

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Old 11-13-2009
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All of the suggestions above are very good. The only thing I would add is to have an extra come-a-long or two handy along with some extra strapping or line in case you need to pull or hold the engine horizontally while trying to work it out the hatch. Carpet remnants come in handy to pad brightwork too.
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Old 11-14-2009
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The above suggestions are right on. Pulled the 5411 from my Cal 9.2 two weeks ago. Took two of us about 3 hours. The rebuilt engine has been delivered and scheduled to go in tomorrow.
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Old 11-14-2009
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Thanks for the advice guys. To my surprise, it was a fairly easy job. Luckily my neighbor has a service truck with built in crane. It really made the job a sinch!
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Or.... you can leave everything attached, get a nice big crane and "Bob's your uncle" as they say......
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