System Specifications

SPECIFICATIONS - 4.7L ENGINE

GENERAL DESCRIPTION






CYLINDER BLOCK






PISTONS






PISTON PINS






PISTON RINGS






CONNECTING RODS






CRANKSHAFT






MAIN BEARING TORQUE AND SEQUENCE





NOTE: Lubricate the bedplate retaining bolts with clean engine oil prior to installation.

Install the bedplate retaining bolts, making sure to place the stud bolts in the correct location, Torque the bolts in the sequence shown.
- Tighten bolts A - L to 54 Nm (40 ft. lbs.)
- Tighten bolts 1-10 to 2.8 Nm (25 in. lbs.)
- Turn bolts 1-10 an additional 90°.
- Tighten bolts A1- A6 to 27 Nm (20 ft. lbs.)

CRANKSHAFT MAIN BEARING SELECTION





The main bearings are "select fit" to achieve proper oil clearances. For main bearing selection, the crankshaft position sensor target wheel has grade identification marks stamped into it (3). These marks are read from left to right, corresponding with journal number 1, 2, 3, 4 and 5. The crankshaft position sensor target wheel (2) is mounted to the number 8 counter weight (1) on the crankshaft.

NOTE: Service main bearings are coded. These codes identify what size (grade) the bearing is.






HARMONIC BALANCER TORQUE

CAUTION: Special Tool 8512-A, is assembled in a specific sequence. Failure to assemble this tool in this sequence can result in tool failure and severe damage to either the tool or the crankshaft.

1. Assemble Special Tool 8512-A as follows, The nut (2) is threaded onto the shaft first. Then the roller bearing (1) is placed onto the threaded rod (3) (The hardened bearing surface of the bearing (1) MUST face the nut (2). Then the hardened washer (5) slides onto the threaded rod. Once assembled coat the threaded rod's threads with MOPAR (R) Nickel Anti-Seize or equivalent.




2. Using Special Tool 8512-A, press damper onto crankshaft (1).
3. Install then tighten vibration damper bolt to 175 Nm (130 ft. lbs.).