Hydraulic Lash Adjuster (HLA)

Hydraulic lash adjuster (HLA)
1. Check HLA face for wear or damage, and replace if necessary.





2. With HLA filled with engine oil, hold (A) and press down on (B) by hand. If (B) moves, replace HLA.

Notice: Never attempt to repair or disassemble an HLA.





3. Measure HLA bore diameters (X and Y directions) at two points (A and B) as shown.
Distortion: 1.1812 - 1.1820 inch (30.000 - 30.025 mm)





4. Measure HLA diameters (X and Y directions) at two points (A and B) as shown.
Diameter: 1.1795 - 1.1801 inch (29.959 - 29.975 mm)
5. Calculate clearance between HLA diameter and related HLA bore. Replace HLA and/or cylinder head if necessary.
Clearance: 0.00099 - 0.00259 inch (0.025 - 0.066 mm)
Maximum: 0.0071 inch (0.180 mm)