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post #1 of 5 Old 05-22-2013 Thread Starter
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removing fuel injector pump

Working on plan to remove the Timing cover to replace leaking gasket on my Yanmar 2 GM20F engine. Question is, is it difficult to remove the injector pump? Any precaution to take? Any chance of some parts going out of alignment?
Advise appreciated.

Ken
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post #2 of 5 Old 05-22-2013
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Re: removing fuel injector pump

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Originally Posted by trantor12020 View Post
Working on plan to remove the Timing cover to replace leaking gasket on my Yanmar 2 GM20F engine. Question is, is it difficult to remove the injector pump? Any precaution to take? Any chance of some parts going out of alignment?
Advise appreciated.
No experience with Yanmar, but with VW, whose pump rotated, like a distributor, in the block. I would scribe a mark connecting the pump and the block for re-installation, assuming nothing had turned or moved.

Paul T
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post #3 of 5 Old 05-22-2013
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Re: removing fuel injector pump

With ours it was just taken off - replaced the gasket and two "O" rings and put it back on.

Nothing to re-align.

Rik

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post #4 of 5 Old 05-22-2013
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Re: removing fuel injector pump

You have to remove the governor linkage first. Also, the injection pump is shimmed at the mating surface to define the size and timing of the pump flow with the piston/valve timing. Do not lose these shims! The pump fits metal-metal and the inlet and outlet piping are connected with beveled threaded fittings. There are no gaskets or o-rings.

If you pull no gears the timing will not be affected.

The hardest part should be re-attaching the governor linkage fork to the rack on the pump.

Do you have the service manual? If not, get it. Worth every penny.

Good luck.
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post #5 of 5 Old 05-25-2013 Thread Starter
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Re: removing fuel injector pump

Ok fryewe, i got to be careful with the link fork. Thanks.

Ken
2002 Hunter 326, SV Millennium 2
1999 Macgregor 26X, SV Millennium
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