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Crawlers, Dozers, Loaders & Backhoes Discussion Forum

Early or late 4039? They're different

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Author 
jdemaris

03-09-2006 06:24:37




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We had a lot of problems trying figure rod-bolt torque specs on many Deere engines from the early 80s and on. As I was instructed by Deere engineers - you cannot mix the different methods of torquing the bolts - i.e. each method is specific to the type of bolt used. The 4039D engine (239 c.i. or 3.87 litre) used several different types of rod bolts, and there is an early and late version engine. As told by Deere - the rod bolts must be identified and torqued as follows: A rod bolt with no coating is torqued to 40 foot lbs. and then turned an additional 90 - 100 degrees. If it's black and phosphate coated it gets torqued to 52 foot lbs. If it is silver colored it is torqued to 63 foot lbs. As far as where the engine was used - in AG - 2350, 2355, 2550, 2555, 2750, 2755, 5500, 6200, 6300. In Industrial - 290D, 315C, 400G, 415B, 482C, 490, and maybe a few more.

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