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Allis Chalmers Discussion Forum
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Rebuilding D14 engine

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Boog

12-05-2006 05:24:12




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Hi all. I am about to embark on an 'in-frame' engine rebuild of a '57 D14. I have 2 questions that I want to ask the good folks here before I start.
1. How hard will it be to get the cylinder liners out and in?
2. What causes "gray" oil?
Thanks for any tips and info.
Joe




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Dick L

12-05-2006 08:42:36




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 Re: Rebuilding D14 engine in reply to Boog, 12-05-2006 05:24:12  
If you have any oil build up under and around the crankshaft pully or the back of the pan, I would think about removing the engine. No way to replace the crankshaft seals without removing the engine. It has the lip seal both front and rear and if you need rings the seals are not far behind. On top of that the engine is so much easier to work on when you can turn it over. With or without an engine stand.

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Texas Denny

12-05-2006 06:42:58




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 Re: Rebuilding D14 engine in reply to Boog, 12-05-2006 05:24:12  
Before you pull the sleeves, remove the oil pan and look for water (antifreeze) dropletts on the bottom of the engine. If you find some, note the positions and examine everything around the drops very carefully (with a magnifying lens if possible). When you pull the sleeves, inspect the sleeve seals for deterioration or damage. Regardless of damage, replace these o-rings. I'd inspect the sleeves after removal - you may not need new ones. I took a WC apart earlier this year. The sleeves measured within manufacturers specifications at every location as did the pistons. Oddly, the rings were way out of spec. The bearings were also good so all it needed was rings. That happened to me with my G as well. I don't understand how rings can wear out but the sleeves and pistons don't - I didn't look the gift horse in the mouth!

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Gatz

12-05-2006 06:15:46




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 Re: Rebuilding D14 engine in reply to Boog, 12-05-2006 05:24:12  
Shouldnt be too hard to get liners out with a puller on top. Heavy bar with a hole for a large screw/nut and plate underneath works good.

Gray oil is an indicator of water leaking into and mixing with the oil.



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