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Old 06-03-2013, 11:11   #1
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Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

Hello all. In the process of re-bleeding our W30/4-91 last week we broke the top piece of the screw off of the idle screw assembly on the governor (part #19282). Apparently these parts are rather hard to come by. We may or may not be able to get one from Westerbeke apparently.

Does anyone have one of these they are willing to sell? Or know the dimensions to "fabricate" your own? The piece we messed up is a hex head screw with half of the threads flat on one side, that screws down with JUST enough pressure to put force on the pin/spring. Obviously since we sheered ours off we don't know how long it should actually be.

Furthermore, I have a whole list of other W30 parts I am looking for (or just want to buy an entire used engine for parts). If you have one you are looking to get rid of, or are willing to pull some parts from, please let us know.

Thanks
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Old 06-03-2013, 14:41   #2
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

Quote:
Originally Posted by Reklobe View Post
Hello all. In the process of re-bleeding our W30/4-91 last week we broke the top piece of the screw off of the idle screw assembly on the governor (part #19282). Apparently these parts are rather hard to come by. We may or may not be able to get one from Westerbeke apparently.

Does anyone have one of these they are willing to sell? Or know the dimensions to "fabricate" your own? The piece we messed up is a hex head screw with half of the threads flat on one side, that screws down with JUST enough pressure to put force on the pin/spring. Obviously since we sheered ours off we don't know how long it should actually be.

Furthermore, I have a whole list of other W30 parts I am looking for (or just want to buy an entire used engine for parts). If you have one you are looking to get rid of, or are willing to pull some parts from, please let us know.

Thanks
Please see post #20 in this thread:

Westerbeke W30 Parts

I am not near the parts right now, but will be in April, if you want them then.

Fair winds,
The Way
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Old 06-03-2013, 17:11   #3
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

I did the same. I got a short (3/8" I think) allen head machine screw and drilled a hole down the center of it and then a side channel to allow easy bleeding. Copper washer for seal. Use a drill press and a new bit. I think I used a 5/64 bit. The allen head allows use of a long handles wrench as access is a PITA, as you know. They come in a "keeper" version which clicks in place, although that bit is plain steel and mine corroded away quickly. Now I just use magnetic. The length is not as critical as you might think, it is adjusted by the nut underneath. I made a spare and will take a picture of it this weekend. If you are not in a rush, I can probably make another pair for you.
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Old 07-03-2013, 10:08   #4
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

Great idea, thanks! Those measurements are just what I needed. Also to hear that it works. Why use copper for the washer?
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Old 07-03-2013, 10:33   #5
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

Copper washers are for sealing.
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Old 10-03-2013, 11:59   #6
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

Here is my spare and the plunger. Have lost the little spring inside it. The original bleeder is to the left and a couple of spares I have made. I installed the third which is hardened steel, better for magnet retrieval than SS. The screw is 10-32 thread and 1/4" long not counting the washer. The length is not micrometer critical as it just compresses the spring.
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Old 10-03-2013, 12:15   #7
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

Very cool. Thanks for the tips and the pictures. Will make one.
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Old 28-04-2013, 21:06   #8
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

i snapped mine off last year while drifting 2 miles off of block island in no wind, after being in a chop which exposed the fuel pickup.

after pulling the whole stack, and nearly losing it down the scupper - man did i give thanks for not losing it !!!!!! - i forced a piece of fuel hose over the next nut down , nytie-ing it tight. i plugged the other end with a pen. the jury rig saved the cruise, until the hot diesel ate thru the bottom of the pen a week later.

i was ready with a small needle valve mad for refridgerator water lines to replace the pen. with the valve sitting up in the vicinity of the injector lines, bleeding is now a such a breeze that i was thinking of getting a machinist friend to make me up a hose barb to replace the bleeder screw.

matt
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Old 01-06-2017, 20:52   #9
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Re: Westerbeke W30/4-91 Idle Screw Assembly/An Engine for Parts

old thread, but I found a (relatively) inexpensive source

ANTI STALL VALVE ASSY - Calcutt Boats Ltd
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