Cummins 4BT – Six- Cylinder Engine Adjustment

Check/adjust the valves as indicated in the illustration (I = Intake, E = Exhaust).
Tighten the locknut and measure the valve lash again.
Torque Value: 24 N«m [18 ft-lb]

Mark the pulley and rotate the crankshaft 360 degrees.
Caution: To prevent engine or pin damage, be sure tim­ing pin is disengaged.

Adjust the valves as indicated in the illustration.
Tighten the lock nut and measure the valve lash again.
Torque Value: 24 N»m [18 ft-lb]

15 mm
Install the valve covers and tighten capscrews.
Torque Value: 24 N»m [18 ft-lb]