So for 7/16 fastener of sufficient quality (grade 8) = 65ft/lbs with oil. If you go up to 1/2 fasteners of that bolt/stud grade you would be looking at 80ft/lbs with oil. The lube you use or don't use also affects the torque required for the proper stretch. Moly lube takes less torque to stretch the bolt the same length because there is less. Flywheel Bolt Torque L10 Cummins.pdf Free Download Here. N14 Cummins Idler multi-grv. Excessive heat generated between the flywheel, driven discs, intermediate. Install mounting bolts and torque to OEM specs. Engine Model Year. Cylinder Head Bolt Torque.
- Flywheel Bolt Torque On Cummins Isx
- 5.9 Cummins Flywheel Bolt Torque
- Flywheel Bolt Torque Specs
- Cummins 6.7 Flywheel Bolt Torque
- Cummins Isx15 Flywheel Bolt Torque
Cummins N14 – Flywheel – Installation
NOTE: Use a new pilot bearing when installing a new or rebuilt clutch.
Use a mandrel and a hammer to remove the pilot bearing.
Use Scotch-Briteா 7448, Part No. 3823258, to clean the pilot bore.
Use a mandrel and a hammer to install the pilot bearing.
NOTE: The pilot bearing must be installed flush with the pilot bore surface.
Install two t-bolts into the flywheel clutch mounting surface.
Install two 5/8 – 18 x 6-inch guide studs in the crankshaft flange.
Install the flywheel on the guide stud.
Lubricate the threads of the capscrews and the surface of the washers with 15W-40 lubricating oil.
Flywheel Bolt Torque On Cummins Isx
Install the four capscrews.
Remove the t-bolts and the guide studs.
Install the remaining two capscrews in the holes from which the guide studs were removed.
Tighten the capscrews in a star pattern.
Torque Value: 271 N•m [200 ft-lb]
Bore Alignment – Measurement
Use dial indicator gauge (1), Part No. 3376050, or its equivalent and dial gauge attachment (2), Part No. ST1325, to inspect the flywheel bore (3) and the surface (4) runout.
Install the attachment to the flywheel housing.
Install the gauge on the attachment.
Install the contact tip of the indicator against the inside diameter of the flywheel bore, and set the dial indicator to ‘‘0.’’
Rotate the crankshaft one complete revolution.
NOTE: The total indicator runout (T.I.R.) must not exceed 0.127 mm [0.0050-inch].
If the T.I.R. is greater than the specification, remove the flywheel.
Inspect the flywheel mounting surface for dirt or damage.
Inspect the crankshaft for dirt or damage. Replace the crankshaft if necessary.
Install the flywheel, and inspect the bore runout again.
5.9 Cummins Flywheel Bolt Torque
Replace the flywheel if the runout does not meet specifications.
Flywheel Bolt Torque Specs
Face Alignment – Measurement
Install the contact tip of the indicator against the flywheel face, as close to the outside diameter as possible, to inspect the face (4) runout.
Push the flywheel forward to remove the crankshaft end clearance. Adjust the dial on the indicator until the needle points to ‘‘0.’’
Rotate the crankshaft one complete revolution. Measure the flywheel runout at four equal points on the flywheel.
NOTE: The flywheel must be pushed toward the front of the engine to remove the crankshaft end clearance each time a point is measured.
The total indicator runout (T.I.R.) must not exceed the following specifications:
Cummins 6.7 Flywheel Bolt Torque
If the flywheel face runout is not within specification, remove the flywheel. Check for nicks, burrs, or foreign material between the flywheel mounting surface and the crankshaft flange.
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