Cummins Isx Main And Rod Bearings Torque Specs New ((top)) May 2026

Cummins ISX Main and Rod Bearings Torque Specs: A Comprehensive Guide

• Rods: 0.0015" – 0.0035"
• Mains: 0.0020" – 0.0040"
• Tight clearance = seizure risk

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The procedure for connecting rod capscrews includes a mandatory loosening step to seat the threads:

Procedures for the connecting rods distinguish between new and used bolts to account for initial bolt stretch. Industrial Parts Depot For NEW Rod Bolts: Hand-tighten all bolts in numerical sequence. Initial Torque: Tighten in sequence to 30 ft-lb [40 N·m] (some sources specify 29 ± 4 ft-lb). Completely loosen all bolts in the same sequence. Second Torque: Tighten in sequence to 52 ft-lb [70 N·m] Final Angle: Rotate each bolt an additional 60 degrees For USED Rod Bolts: Hand-tighten in numerical sequence. Initial Torque: Tighten in sequence to 52 ft-lb [70 N·m] Final Angle: Rotate each bolt an additional 60 degrees Critical Installation Tips Lubrication: cummins isx main and rod bearings torque specs new

Main Bearing Torque Sequence (10 bolts – typical):

Alternative Verification (Professional Method):

Many ISX builders prefer bolt stretch over torque. If you have a stretch gauge: Cummins ISX Main and Rod Bearings Torque Specs: