1. Inspect lifters for excessive clearance in bores. Accurately measure the lifter outer diameter and record the measurement.
2. Accurately measure lifter bore inner diameter with a snap gauge. Subtract this measurement from the lifter measurement to determine clearance.
a. Clearance should be within 0.0008-0.0020 in (0.0203-0.0508 mm).
b. Install new lifters and/or replace crankcases if clearance exceeds service wear limit of 0.007 in (0.076 mm).
3. Check lifter roller end clearance.
a. End clearance should be within 0.008-0.022 in (0.203-0.559 mm).
b. Replace lifters if end clearance exceeds service wear limit of 0.022 in (0.559 mm).
4. Soak lifters in clean engine oil. Keep covered until assembly.
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