LEMON Manuals: Even more car manuals for everyone
Home >> Dodge and Ram >> 2003 >> Durango Base, 5.9 Z, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Engine - 3.9L) >> Intake/Exhaust Valves & Seats >> Installation

Intake/Exhaust Valves & Seats: Installation

WARNING: This page is about a different car, the 2003 Dodge Dakota. However, it is still accessible from the selected car via links, so may be relevant.
  1. Clean valves thoroughly. Discard burned, warped and cracked valves.
  2. Remove carbon and varnish deposits from inside of valve guides with a reliable guide cleaner.
  3. Measure valve stems for wear. If wear exceeds 0.051 mm (0.002 inch), replace the valve.
  4. Coat valve stems with lubrication oil and insert them in cylinder head.
  5. If valves or seats are reground, check valve stem height. If valve is too long, replace cylinder head.
  6. Install new seals on all valve guides. Install valve springs and valve retainers.
  7. Compress valve springs with Valve Spring Compressor Tool MD-998772A and adapter 6716A, install locks and release tool. If valves and/or seats are ground, measure the installed height of springs. Make sure the measurement is taken from bottom of spring seat in cylinder head to the bottom surface of spring retainer. If spacers are installed, measure from the top of spacer. If height is greater than 42.86 mm (1-11/16 inches), install a 1.587 mm (1/16 inch) spacer in head counterbore. This should bring spring height back to normal 41.27 to 42.86 mm (1-5/8 to 1-11/16 inch).
  8. Install cylinder head (Refer to ENGINE/CYLINDER HEAD-INSTALLATION  ).
scientia non olet · About LEMON Manuals