Category Archives for Cummins N14

Cummins N14 – Connecting Rod Assemblies – Cleaning

NOTE: The alpha characters or numbers on the connecting rod cap must be the same as the alpha characters or numbers on the rod. Do not assemble a new cap to a used rod or a used cap to a … Continue reading

07. March 2021 by samuel
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Cummins N14 – Pistons – Inspection

Visually inspect the piston bowl, the pin bore, and the skirt for cracks or damage. Use crack detection kit, Part No. 3375432, or equivalent to check for cracks on the top of the piston and in the piston pin bore. … Continue reading

07. March 2021 by samuel
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Cummins N14 – Pistons – Cleaning

Warning: When using a steam cleaner, wear protective clothing and safety glasses or a face shield. Hot steam can cause serious personal injury. Caution: Do not use the glass bead blast method to clean the pistons. The piston will be … Continue reading

07. March 2021 by samuel
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Cummins N14 – Cylinder Liners – Inspection

Visually inspect for pitting or erosion in the crevice seal groove. Replace the liner if pitting or erosion is greater than one-half the width of the crevice seal groove. Visually inspect the outside diameter for excessive corrosion or pitting. Pits … Continue reading

07. March 2021 by samuel
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Cummins N14 – Cylinder Liners – Cleaning

Remove the crevice seal. Remove the two o-rings. Caution: Do not use a hone, deglazing, or prebrushing to clean the cylinder liners. Abrasives can damage the finish and the pattern and can contaminate the liner. Warning: Wear eye protection. Make … Continue reading

07. March 2021 by samuel
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Cummins N14 – Cam Bore Rear Cup Plug – Installation

Caution: Do not install cup plugs in the block until the cleaning, inspection, and necessary repair procedures are completed. This will prevent dirt from being trapped in the engine. Use cup plug sealant, Part No. 3375068, to seal the outside … Continue reading

07. March 2021 by samuel
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Cummins N14 – Straight Thread Plug and Pipe Plug – Installation

Caution: Do not install straight thread plugs or pipe plugs in the block until cleaning, inspection, and nec- essary repair procedures are completed. This will prevent dirt from being trapped in the engine. Use pipe sealant, Part No. 3375066, to … Continue reading

07. March 2021 by samuel
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Cummins N14 – Dowel Pin – Installation

NOTE: Do not install the dowel pins in the block until the inspection and any necessary repair procedures are com- pleted. Caution: Do not use a hammer. Damage to the dowel pin will result. Use a plastic mallet. Install the … Continue reading

07. March 2021 by samuel
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Cummins N14 – Camshaft Bushings – Installation

Caution: Incorrect installation will block oil flow to the rocker levers and the cam followers resulting in severe damage to the engine. Refer to the numbers stamped on the bushings to determine the correct cylinder block cam bore locations in … Continue reading

07. March 2021 by samuel
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Cummins N14 – Cylinder Head Capscrew Holes – Repairing

Components included in the capscrew thread repair kit, Part No. 3376208, for the N14 block are as follows: Remove any burrs from the top deck surface of the cylinder block. A flat mill file is very effective for this process. … Continue reading

07. March 2021 by samuel
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