Author Topic: Rebuilding 4JH2-TE / H46 #28  (Read 2020 times)

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Windswept

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #28 on: April 28, 2019, 04:20:25 PM »
Well, Gloria and I took Windswept for her first trial engine run yesterday....must report, ran perfect and not one issue! Yea, So, while we were out there (Monterey Bay) we joined the on going Salmon fleet and manged to pluck a couple yummies out of the Bay. Note: all my sailboats, including "Windswept" have a "Scotty" downrigger mounted on their stern rail!  :)

What a great day on the Bay, and looking forward to the big blue horizon!

Don & Gloria SV Windswept #028

PS. I have no idea why images are turned 90* as they are correct in my pic file? Advise?

« Last Edit: April 28, 2019, 04:29:22 PM by Windswept »

Windswept

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #27 on: April 27, 2019, 04:00:49 AM »
For some reason this pic kept loading upside down....I'll try here. This is the insulation I installed on top of the existing insulation. It's about 3/16th's or 1/4 " thick. Should help with heat and sound. ;)

Windswept

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #26 on: April 27, 2019, 03:49:06 AM »
Hello Brian....sounds like everything went pretty smooth...hope you didn't have to add another thru hull, smile.

I did manage to get our engine back from the builder....wow, much more difficult going in then coming out. Since I'm an avid classic corvette guy... as you can see, the 4JH2 was splashed with a few cans of chevy orange, smile. My thinking....was with the chevy orange....it would lighten the engine bay...so yours truley could see a tad better. Btw: it worked!! LOL.

Hey, sent you an email regarding your staysail.....did you get that note? Thanks

Don/Windswept

« Last Edit: April 27, 2019, 03:56:23 AM by Windswept »

brian black

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #25 on: April 26, 2019, 06:02:57 PM »
we did change out our KBW20 transmission for a ZF30, sourced from Elias.  The cooling water hookup was probably the most challenging part, seems to have worked out just fine.   

brian black

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #24 on: April 13, 2019, 10:19:44 PM »
Well, further to this.  We're in the yard, in Hawaii, and I've got a ZF coming from Elias that should arrive Monday.  I'm optimistic that the install can go pretty quickly.  The old trans, a KBW20, is out, and listed on e-bay with a recommendation to rebuild it before installing.  It should be useful to someone out there.  Thanks all for good info and guidance

SeaGlub

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #23 on: February 01, 2019, 05:04:14 AM »
Well I was right about at least one thing, Elias knows what he's talking about. Good luck with the tranny and maybe we'll see you in San Diego this summer. We're driving back from Mexico and I'll be taking my captains course in August. Email me at seaglub at gmail.com
C&M
SeaGlub H46 #22

Windswept

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #22 on: February 01, 2019, 02:38:33 AM »
Actually not.... Chris, spoke to Elias today (nice guy) He informed me my KM4A has a 7degree down angel which I was aware of. What I was not aware of....is your KBW 20 or 21 is a straight line transmisson which the ZF30 is a direct replacement. Hurth does not make a transmission replacement for my KM4A ;(. Elias did say, he can rebuild my KM4A in house. Looks like I will be traveling to SD in the near future. Thanks Chris!

SeaGlub

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #21 on: January 30, 2019, 10:01:58 PM »
The KM4A is very similar to my former KBW20.  I believe those two and the ZF30 are interchangeable on the 4JH2TE
C&M
SeaGlub H46 #22

Windswept

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #20 on: January 29, 2019, 03:00:52 AM »
Chris....great info regarding the ZF transmission. My transmisson is KM4A....is this the same transmission as your old transmission? I did find out....my KM4A was rebuilt 2013 in Florida. Best I can make out....it has approx. 1000 hours on it. My thinking is....to reinstall it. I've looked around and can not find anyone to rebuild it....except through List Marine...whom wants an arm and a legg as you might imagine ;(

Brian...how ya doing? Last time I spoke with you....you were queing up for the Puddle jump via Panama. Hope your crossing was a great one. Are you having issues with your tranny? Needless to say, trying to figure out what do here with ours. Maybe some will chime in..... i.e. on how many hours they have on their transmission, issues ect.

On that note.....engine 4JH2-TE was just pulled apart by builder. Bearings....alll look like they are brand new. Some wear on the bearing on the camshaft.....camshaft will be going back in. He want to bore .10 over to make the cylinders perfect. I have just found out.....Yanmar only has .25 over pistions available...(one size) ummmmmm. I'll have to take this info to my builder and see what he wants to do.

Thanks everyone!
Don

brian black

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #19 on: January 28, 2019, 07:49:39 PM »
Thanks SeaGlub.  I've been trying to run down this info for 6 months. 

SeaGlub

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #18 on: January 28, 2019, 06:42:22 PM »
Transmission was sourced through

PacWest Marine - Elias
2390 Shelter Island Dr # 110
San Diego, CA 92106, USA
619-222-0475

Elias is and has been a terrific source for all things Yanmar.  We were in La Paz when another 4jh2te had a kbw transmission fail and after two months of trying to find a new one or parts to repair it they gave up and found the ZF. Ours never failed but was showing signs of issues (splines on output shaft we're stripping due to misalignment due to cracked engine mount)
The install was not that difficult, but the ZF does come with a raw water color unit for the tranny fluid so we followed directions and sourced raw water after the stainer but before the impeller for the engine.
C&M
SeaGlub H46 #22

brian black

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #17 on: January 28, 2019, 01:13:52 AM »
That's why we changed transmission types, we had the KBW20 with 2.17 ratio and it's now no longer available and parts for a rebuild nearly impossible if exactly impossible to find. We installed the Hurth ZF30 with 2.15 ratio in September and have about 100 hours on it now without a problem. Was a fairly smooth install but had to lift the engine off the mounts because the bulkead that the shaft runs through, the same bulk head that's there to provide support for the genset, was too close to just install the tranny without moving the en
gine 1-2". However, this gave us a good opportunity to replace the 20 year old motor mounts, one of which we found had cracked.

Thanks SeaGlub, very useful.  Where did you source the ZF30?

SeaGlub

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #16 on: January 27, 2019, 02:29:17 PM »
 That's why we changed transmission types, we had the KBW20 with 2.17 ratio and it's now no longer available and parts for a rebuild nearly impossible if exactly impossible to find. We installed the Hurth ZF30 with 2.15 ratio in September and have about 100 hours on it now without a problem. Was a fairly smooth install but had to lift the engine off the mounts because the bulkead that the shaft runs through, the same bulk head that's there to provide support for the genset, was too close to just install the tranny without moving the engine 1-2". However, this gave us a good opportunity to replace the 20 year old motor mounts, one of which we found had cracked.
C&M
SeaGlub H46 #22

brian black

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #15 on: January 20, 2019, 05:41:46 PM »
For what it's worth in this discussion, we replaced our KBW transmission this year with a ZF Hurth, along with the motor mounts as they do age and this was what caused our KBW transmission to begin failing. /quote]

Hi SeGlub.  What ZF Hurth did you use for a replacement?  I think I may need to replace our KBW eventually, and they're no longer available

Windswept

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Re: Rebuilding 4JH2-TE / H46 #28
« Reply #14 on: January 17, 2019, 10:34:56 AM »
Scott sorry for the belated reply, just got back in town. Seems the 44 and 46 have two different engine bed elevations, interesting... Even though the 46 engine bed is lower (it seems) I did not have enough heigth above the engine (sink box) to get the enign out due, no room above the engine. My head had to diffinately come off so as to get the engine out. Sure wish it could go back in....assembled ;(.

Interesting regarding the turbo. I have mine at the shop now, as well as the injection pump and injectors. I will know soon of their condition. I did today.... order the whole heat exchanger. The complete unite is like 1200. The tubes are 900....so went ahead and bought the whole thing. Before I left town.... my engine progress pics are below. ;)

Seaglub...  curious, why the transmission different make? Yep, and also look forward to crossing paths. Before our Puddlejump, we also plan to be in Mexico for a year. We will eventually make Equador, Galapagos, ~~~~> West ;) Hope your having fun...which I'm sure you are. btw: Next week, I'll get another proposal for the arch, which will be modified for the stern seats! Thanks! ;)

Don


 

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