RAM 2500 Truck 4WD V8-5.9L VIN Z LDC (1998)
Oil Line: Description and Operation
Oil Line Plug
The oil line plug is located in the vertical passage at the rear of the block between the Oil-To-Filter and Oil-From-Filter passages. Improper installation
or plug missing could cause erratic, low or no oil pressure.
1. Remove oil pressure sending unit from back of block.
2. Insert a 3.175 mm (1/8 inch) finish wire or equivalent into passage.
3. Plug should be 190.0 to 195.2 mm (7-1/2 to 7-11/16 inches) from machined surface of block. If plug is too high, use a suitable flat dowel drift to
position properly.
4. If plug is too low, remove oil pan and rear main bearing cap. Use suitable flat dowel to properly position. Coat outside diameter of plug with
Mopers (stud and bearing mount adhesive), or equivalent. Plug should be 54.0 to 57.7 mm (2-1/8 to 2-5/16 inches) from bottom of the block.
5. Assemble engine and check oil pressure.