RAM 1500 Van V8-5.9L VIN Z (1998)
Positioning Valve With Tool C-3973
1. Install Valve Guide Sleeve Tool C-3973 over valve stem and install valve. The special sleeve places the valve at the correct height for checking
with a dial indicator.
Measuring Valve Guide Wear
2. Attach Dial Indicator Tool C-3339 to cylinder head and set it at right angle of valve stem being measured.
Reamer Sizes
3. Move valve to and from the indicator. The total dial indicator reading should not exceed 0.432 mm (0.017 inch). Ream the guides for valves with
over-size stems if dial indicator reading is excessive or if the stems are scuffed or scored.
Service valves with oversize stems are available.
Slowly turn reamer by hand and clean guide thoroughly before installing new valve. Ream the valve guides from standard to 0.381 mm (0.015
inch). Use a 2 step procedure so the valve guides are reamed true in relation to the valve seat:
^
Step 1-Ream to 0.0763 mm (0.003 inch).
^
Step 2-Ream to 0.381 mm (0.015 inch).
VALVE SEATS
