Cummins Isx Main And Rod Bearings Torque Specs New

Cummins ISX Main and Rod Bearings Torque Specs (New): The Complete Guide

, the procedure requires an initial pre-stretch step that is skipped with used bolts: Industrial Parts Depot Tighten in numerical sequence to 29 ± 4 ft-lb (40 N•m) Loosen the bolts completely in numerical sequence. Retighten in numerical sequence to 52 ± 4 ft-lb (70 N•m) Rotate the bolts an additional 60 ± 5 degrees Main Bearing Torque Specs

• 2000-2003 Cummins ISX: Main bearing cap bolts: 100-110 ft-lbs (136-149 Nm); Rod bearing cap bolts: 40-50 ft-lbs (54-68 Nm)
• 2004-2010 Cummins ISX: Main bearing cap bolts: 110-120 ft-lbs (149-163 Nm); Rod bearing cap bolts: 45-55 ft-lbs (61-75 Nm)
• 2011 and later Cummins ISX: Main bearing cap bolts: 120-130 ft-lbs (163-177 Nm); Rod bearing cap bolts: 50-60 ft-lbs (68-81 Nm)

Clean the back of the bearing shells and the housing bores with a non-residue cleaner (like brake cleaner). cummins isx main and rod bearings torque specs new

1. Stage 1: 80 ft-lbs (108 N·m)
2. Stage 2: 140 ft-lbs (190 N·m)
3. Stage 3 (The Critical Angle): Loosen the nut 1 full turn (360°). Wait 5 seconds.
4. Stage 4: 80 ft-lbs (108 N·m)
5. Stage 5: Turn nut an additional 105° (degrees, not ft-lbs).

Part 4: Common Mistakes That Destroy New ISX Bearings

Like the main bearings, the rod bearing cap bolts and studs should be tightened in a specific sequence to ensure even pressure distribution. The recommended sequence is: Cummins ISX Main and Rod Bearings Torque Specs