Service parts topic 00t1 7 describes new grade 12 9 main bearing capscrews part number 3411337 and the higher installation torque released for the n14 engine to address main bearing cap fretting.
Rod and main bearings for n14 cummins.
When replacing the main bearings and road bearing in a n14 cummins in frame which is the correct procedure for removing the main and rod bearings.
This aftermarket part is guaranteed to meet oem specifications and covered by a 12 month warranty.
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Main bearing set cummins n14 3801260 a set of main bearings and thrust washers for cummins n14 engines 2 year warranty.
The following is a summary of the changes.
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Engines built prior to esn 11875596 have grade 8 main bearing capscrews part number 208346.
A listing of accessory and component suppliers addresses and telephone numbers is located in section c.
Diesel parts direct is your one stop cummins shop.
Cummins n14 main bearing bolt torque step 1 120 nm 90 lb ft step 2 230 nm 170 lb ft step 3 346 nm 255 lb ft step 4 loosen all.
Page 2 foreword this manual contains complete rebuild specifications and information for the n14 model engines and all asso ciated components manufactured by cummins engine company inc.
Step 5 120 nm 90 lb ft step 6 230 nm 170 lb ft step 7 346 nm 255 lb ft.
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Connecting rod bearing for cummins n14 engines.