RAM 3500 Truck 4WD L6-6.7L DSL Turbo (2008)
Crankshaft Main Bearing: Service and Repair
MAIN BEARING CLEARANCE
Inspect the main bearing bores for damage or abnormal wear.
1. Remove bearings and measure main bearing bore diameter after torquing main bearing cap bolts to 176 Nm (130 ft. lbs.).
2. Install the crankshaft main bearings and measure main bearing bore diameter with the main bolts tightened to 176 Nm (130 ft. lbs.) torque.
3. Measure the diameter of the main journal at the locations shown. Calculate the average diameter for each side of the journal.
4. Calculate the main bearing journal to bearing clearance. Maximum clearance is 0.119 mm (0.00475 inch). If the crankshaft journal is within limits,
replace the main bearings. If not within specifications, grind the crankshaft to next size and use oversize bearings.
5. Measure thrust distance at the No.6 position.
