Valve Clearance Check
- Rotate camshaft so base circle of camshaft lobe is positioned on valve to be checked. Using Valve Spring Compressor (49 UN01 135), apply pressure on cam follower until lash adjuster is fully collapsed.
- While holding lash adjuster in fully collapsed position, use feeler gauge to measure clearance between base circle of camshaft and camshaft follower. See COLLAPSED LASH ADJUSTER CLEARANCE (B2300) table.
- If clearance is not within specification, inspect camshaft follower for damage. If camshaft follower is not damaged, check for sticking valve, or worn valve spring or camshaft lobe(s). If components are okay, check for defective lash adjuster. Replace components as necessary.
COLLAPSED LASH ADJUSTER CLEARANCE
| Application | In. (mm) |
|---|---|
| Allowable | .035-.055 (.89-1.39) |
| Desired | .040-.050 (1.01-1.27) |