(Note: If the housing has bolt holes on the very top flange or bottom pan rail, tighten the main housing bolts first using the sequence above, then tighten the flange bolts to the same specification.)
| Symptom | Likely Cause | Corrective Action | |---------|--------------|-------------------| | Oil leak at rear of engine | Uneven torque or missing sealant | Retorque in sequence; if persists, replace housing gasket/sealant | | Flywheel housing crack near bolt boss | Over-torque (using wrench instead of angle) | Replace housing; use torque-angle method | | Transmission difficult to install | Dowel pins misaligned or housing distorted | Loosen all bolts, realign, retorque in sequence | | Bolt loosens after 500 miles | Under-torque or oil on under-head friction face | Clean bolt head/face, re-torque with fresh oil per spec | Cummins Isx Flywheel Housing Torque Specs
: Refer to specific Cummins documentation for the correct torque specifications for main housing bolts. Installation & Torque Sequence (Note: If the housing has bolt holes on