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Old 11-22-2015, 01:25 PM   #1
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DIY Turbo Rebuild: 3LD?

Is there any interest in a DIY article on rebuilding a Holset/Schwitzer 3LD turbo from a 1977 Perkins T6.354?

I just finished rebuilding mine and took a bunch of pictures during the process. I can post the pics and write-up the process. Is there a wiki or place in the forum for these types of articles? Attached is one of the pics

The process is not complex and I think anyone with experience working on engines could do it. It's about as complex as rebuilding a carburetor.

It's not the same as professional rebuild but it solved my problem which was excessive play. A pro rebuild would likely rebalance the wheels, machine some surfaces, and use a more precise bushing. I can't afford to purchase a rebuilt turbo, but I can afford the kit at $95.

For me though, the bushing from the kit fit perfectly and eliminated the play. It will be interesting to see how the turbo holds.

Thanks,
RR
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Old 11-22-2015, 02:27 PM   #2
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Yeah, post it up here! I have 2 of the same turbos and will probably take them apart at some point. Some pictures to let me know what I'm getting into beforehand would be great
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Old 11-22-2015, 04:17 PM   #3
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Originally Posted by Gabe n Em View Post
Yeah, post it up here! I have 2 of the same turbos and will probably take them apart at some point. Some pictures to let me know what I'm getting into beforehand would be great
Is there a wiki space, or should I just post a very long message?
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Old 12-03-2015, 08:11 PM   #4
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Where did you find the kit and what other pictures do you have
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Old 12-03-2015, 08:16 PM   #5
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Originally Posted by R_p_ryan View Post
Is there a wiki space, or should I just post a very long message?
Just post it as a long message or series of messages. After you do so perhaps a moderator can make this thread a sticky in the engine section as I'm sure most members are not aware how attainable this project is to the somewhat skilled DIY'er.
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Old 12-03-2015, 10:38 PM   #6
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It's really not that hard. At first I just took photos as I took it apart. Then I found the directions in the Perkins shop manual. I got the kit from China, on Aliexpress after searching for Schweitzer 3ld. The kit was like $75 and showed up within a week. Definitely within reach of a confidently DIYer. I'll put together a PDF doc with all the pictures and post it.

It was remarkable how much play was in the wheel before and after. Apparently this is also a cause of low oil pressure, as the oil will easily pass around worn bearings.

But I haven't installed it yet so I can't vouch for the rebuild. After some sea trials I'll be more (hopefully) confident recommending the process.
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Old 12-04-2015, 09:27 AM   #7
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R.P.:
Good for you! Ordinarily turbocharger rebuilding is something I don't touch, as the warranty is something we don't want to deal with, but for a DIY'er it's certainly worth the try.

Please let us know how it works out.

BTW: The turbo on "Rise 'n Shine" is obviously recently changed. Furthermore, when I winterized, I discovered the outlet elbow from the turbo (which goes from the turbocharger to the wet elbow) was completely rotted through, and the wet elbow was only held in place by the exhaust hose. No wonder I smelled exhaust...

J.S.
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Old 12-04-2015, 09:54 AM   #8
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Be careful as these rebuild kits only include bearings and seals. If the turbo housing is corroded due to sea water intrusion, installing the kit may not help a bit.


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Old 12-04-2015, 11:32 AM   #9
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Your turbo will be fine. I have rebuilt several and never had an issue.
Just make sure you prime it with oil just prior to startup.
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