Note. Hydraulic valve lifters are used. Valve adjustment is not required. If valve clearance is incorrect, oversize and undersize push rods are available for correction.
- Rotate crankshaft in normal operation direction until cylinder No. 1 is at TDC of compression stroke. Using Tappet Bleed Down Wrench (T71P-6513-B), apply pressure to intake tappet for cylinder No. 1 until lifter is completely bottomed.
- Hold tappet in this position, and measure clearance between tappet and valve stem. Record measurement. Repeat procedure for intake valves No. 4 and 8, and exhaust valves No. 1, 3 and 7.
- Rotate crankshaft 360 degrees. Bleed lifter. Check intake valves No. 3 and 7, and exhaust valves No. 2 and 6. Rotate crankshaft 90 degrees. Bleed lifter. Check intake valves No. 2, 5 and 6, and exhaust valves No. 4, 5 and 8. Record measurements and compare them to specification in 5.0L COLLAPSED VALVE LIFTER CLEARANCE table. If clearance is not within specification, use shorter or longer push rod to obtain correct clearance.
| Application | In. (mm) | |
|---|---|---|
| Intake & Exhaust | ||
| Allowable | .098-.198 (2.49-5.03) | |
| Preferred | .123-.146 (3.12-3.71) | |
5.0L COLLAPSED VALVE LIFTER CLEARANCE