Cummins/Onan 6.5NH - 3CR / 6000 A — Connecting Rod Installation

Repair & overhaul · Connecting rods

For the Cummins/Onan 6.5NH - 3CR / 6000 A, from the Cummins/Onan service manual.

Applies to: Cummins/Onan NH engine

Procedure

1. Install the connecting rods and caps with raised lines (witness marks) aligned and caps facing toward the oil base.
2. The rod and cap numbered 2 fits on the crankshaft journal nearest the bearing plate.
3. Coat the crankshaft journal bearing surfaces with oil before installing the rods.
4. Crank the engine by hand to see that the rods are free.
5. If necessary, rap the connecting rod cap screws sharply with a soft-faced hammer to set the rod square on the journal.

Source: Cummins/Onan service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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